diff --git a/src/compiler/commandLineParser.ts b/src/compiler/commandLineParser.ts
index b4a09ea84ba34..f0ccc291ffb90 100644
--- a/src/compiler/commandLineParser.ts
+++ b/src/compiler/commandLineParser.ts
@@ -236,6 +236,7 @@ const libEntries: [string, string][] = [
["esnext.array", "lib.esnext.array.d.ts"],
["esnext.regexp", "lib.esnext.regexp.d.ts"],
["esnext.string", "lib.esnext.string.d.ts"],
+ ["esnext.iterator", "lib.esnext.iterator.d.ts"],
["decorators", "lib.decorators.d.ts"],
["decorators.legacy", "lib.decorators.legacy.d.ts"],
];
diff --git a/src/lib/dom.iterable.d.ts b/src/lib/dom.iterable.d.ts
index 747f279099191..da56ceae7a647 100644
--- a/src/lib/dom.iterable.d.ts
+++ b/src/lib/dom.iterable.d.ts
@@ -1,30 +1,30 @@
/// <reference lib="dom" />
interface DOMTokenList {
- [Symbol.iterator](): IterableIterator<string, BuiltinIteratorReturn>;
+ [Symbol.iterator](): BuiltinIterator<string, BuiltinIteratorReturn>;
}
interface Headers {
- [Symbol.iterator](): IterableIterator<[string, string], BuiltinIteratorReturn>;
+ [Symbol.iterator](): BuiltinIterator<[string, string], BuiltinIteratorReturn>;
/**
* Returns an iterator allowing to go through all key/value pairs contained in this object.
*/
- entries(): IterableIterator<[string, string], BuiltinIteratorReturn>;
+ entries(): BuiltinIterator<[string, string], BuiltinIteratorReturn>;
/**
* Returns an iterator allowing to go through all keys f the key/value pairs contained in this object.
*/
- keys(): IterableIterator<string, BuiltinIteratorReturn>;
+ keys(): BuiltinIterator<string, BuiltinIteratorReturn>;
/**
* Returns an iterator allowing to go through all values of the key/value pairs contained in this object.
*/
- values(): IterableIterator<string, BuiltinIteratorReturn>;
+ values(): BuiltinIterator<string, BuiltinIteratorReturn>;
}
interface NodeList {
/**
* Returns an array of key, value pairs for every entry in the list
*/
- entries(): IterableIterator<[number, Node], BuiltinIteratorReturn>;
+ entries(): BuiltinIterator<[number, Node], BuiltinIteratorReturn>;
/**
* Performs the specified action for each node in an list.
* @param callbackfn A function that accepts up to three arguments. forEach calls the callbackfn function one time for each element in the list.
@@ -34,21 +34,21 @@ interface NodeList {
/**
* Returns an list of keys in the list
*/
- keys(): IterableIterator<number, BuiltinIteratorReturn>;
+ keys(): BuiltinIterator<number, BuiltinIteratorReturn>;
/**
* Returns an list of values in the list
*/
- values(): IterableIterator<Node, BuiltinIteratorReturn>;
+ values(): BuiltinIterator<Node, BuiltinIteratorReturn>;
- [Symbol.iterator](): IterableIterator<Node, BuiltinIteratorReturn>;
+ [Symbol.iterator](): BuiltinIterator<Node, BuiltinIteratorReturn>;
}
interface NodeListOf<TNode extends Node> {
/**
* Returns an array of key, value pairs for every entry in the list
*/
- entries(): IterableIterator<[number, TNode], BuiltinIteratorReturn>;
+ entries(): BuiltinIterator<[number, TNode], BuiltinIteratorReturn>;
/**
* Performs the specified action for each node in an list.
@@ -59,55 +59,55 @@ interface NodeListOf<TNode extends Node> {
/**
* Returns an list of keys in the list
*/
- keys(): IterableIterator<number, BuiltinIteratorReturn>;
+ keys(): BuiltinIterator<number, BuiltinIteratorReturn>;
/**
* Returns an list of values in the list
*/
- values(): IterableIterator<TNode, BuiltinIteratorReturn>;
+ values(): BuiltinIterator<TNode, BuiltinIteratorReturn>;
- [Symbol.iterator](): IterableIterator<TNode, BuiltinIteratorReturn>;
+ [Symbol.iterator](): BuiltinIterator<TNode, BuiltinIteratorReturn>;
}
interface HTMLCollectionBase {
- [Symbol.iterator](): IterableIterator<Element, BuiltinIteratorReturn>;
+ [Symbol.iterator](): BuiltinIterator<Element, BuiltinIteratorReturn>;
}
interface HTMLCollectionOf<T extends Element> {
- [Symbol.iterator](): IterableIterator<T, BuiltinIteratorReturn>;
+ [Symbol.iterator](): BuiltinIterator<T, BuiltinIteratorReturn>;
}
interface FormData {
/**
* Returns an array of key, value pairs for every entry in the list
*/
- entries(): IterableIterator<[string, string | File], BuiltinIteratorReturn>;
+ entries(): BuiltinIterator<[string, string | File], BuiltinIteratorReturn>;
/**
* Returns a list of keys in the list
*/
- keys(): IterableIterator<string, BuiltinIteratorReturn>;
+ keys(): BuiltinIterator<string, BuiltinIteratorReturn>;
/**
* Returns a list of values in the list
*/
- values(): IterableIterator<string | File, BuiltinIteratorReturn>;
+ values(): BuiltinIterator<string | File, BuiltinIteratorReturn>;
- [Symbol.iterator](): IterableIterator<string | File, BuiltinIteratorReturn>;
+ [Symbol.iterator](): BuiltinIterator<string | File, BuiltinIteratorReturn>;
}
interface URLSearchParams {
/**
* Returns an array of key, value pairs for every entry in the search params
*/
- entries(): IterableIterator<[string, string], BuiltinIteratorReturn>;
+ entries(): BuiltinIterator<[string, string], BuiltinIteratorReturn>;
/**
* Returns a list of keys in the search params
*/
- keys(): IterableIterator<string, BuiltinIteratorReturn>;
+ keys(): BuiltinIterator<string, BuiltinIteratorReturn>;
/**
* Returns a list of values in the search params
*/
- values(): IterableIterator<string, BuiltinIteratorReturn>;
+ values(): BuiltinIterator<string, BuiltinIteratorReturn>;
/**
* iterate over key/value pairs
*/
- [Symbol.iterator](): IterableIterator<[string, string], BuiltinIteratorReturn>;
+ [Symbol.iterator](): BuiltinIterator<[string, string], BuiltinIteratorReturn>;
}
diff --git a/src/lib/es2015.generator.d.ts b/src/lib/es2015.generator.d.ts
index ac2d833b8d123..2397d79dddbd3 100644
--- a/src/lib/es2015.generator.d.ts
+++ b/src/lib/es2015.generator.d.ts
@@ -1,6 +1,6 @@
/// <reference lib="es2015.iterable" />
-interface Generator<T = unknown, TReturn = any, TNext = any> extends Iterator<T, TReturn, TNext> {
+interface Generator<T = unknown, TReturn = any, TNext = any> extends BuiltinIterator<T, TReturn, TNext> {
// NOTE: 'next' is defined using a tuple to ensure we report the correct assignability errors in all places.
next(...[value]: [] | [TNext]): IteratorResult<T, TReturn>;
return(value: TReturn): IteratorResult<T, TReturn>;
diff --git a/src/lib/es2015.iterable.d.ts b/src/lib/es2015.iterable.d.ts
index 98cf906c7db7c..00a0ff820ca09 100644
--- a/src/lib/es2015.iterable.d.ts
+++ b/src/lib/es2015.iterable.d.ts
@@ -35,26 +35,30 @@ interface IterableIterator<T, TReturn = any, TNext = any> extends Iterator<T, TR
[Symbol.iterator](): IterableIterator<T, TReturn, TNext>;
}
+interface BuiltinIterator<T, TReturn = any, TNext = any> extends Iterator<T, TReturn, TNext> {
+ [Symbol.iterator](): BuiltinIterator<T, TReturn, TNext>;
+}
+
type BuiltinIteratorReturn = intrinsic;
interface Array<T> {
/** Iterator */
- [Symbol.iterator](): IterableIterator<T, BuiltinIteratorReturn>;
+ [Symbol.iterator](): BuiltinIterator<T, BuiltinIteratorReturn>;
/**
* Returns an iterable of key, value pairs for every entry in the array
*/
- entries(): IterableIterator<[number, T], BuiltinIteratorReturn>;
+ entries(): BuiltinIterator<[number, T], BuiltinIteratorReturn>;
/**
* Returns an iterable of keys in the array
*/
- keys(): IterableIterator<number, BuiltinIteratorReturn>;
+ keys(): BuiltinIterator<number, BuiltinIteratorReturn>;
/**
* Returns an iterable of values in the array
*/
- values(): IterableIterator<T, BuiltinIteratorReturn>;
+ values(): BuiltinIterator<T, BuiltinIteratorReturn>;
}
interface ArrayConstructor {
@@ -75,67 +79,67 @@ interface ArrayConstructor {
interface ReadonlyArray<T> {
/** Iterator of values in the array. */
- [Symbol.iterator](): IterableIterator<T, BuiltinIteratorReturn>;
+ [Symbol.iterator](): BuiltinIterator<T, BuiltinIteratorReturn>;
/**
* Returns an iterable of key, value pairs for every entry in the array
*/
- entries(): IterableIterator<[number, T], BuiltinIteratorReturn>;
+ entries(): BuiltinIterator<[number, T], BuiltinIteratorReturn>;
/**
* Returns an iterable of keys in the array
*/
- keys(): IterableIterator<number, BuiltinIteratorReturn>;
+ keys(): BuiltinIterator<number, BuiltinIteratorReturn>;
/**
* Returns an iterable of values in the array
*/
- values(): IterableIterator<T, BuiltinIteratorReturn>;
+ values(): BuiltinIterator<T, BuiltinIteratorReturn>;
}
interface IArguments {
/** Iterator */
- [Symbol.iterator](): IterableIterator<any, BuiltinIteratorReturn>;
+ [Symbol.iterator](): BuiltinIterator<any, BuiltinIteratorReturn>;
}
interface Map<K, V> {
/** Returns an iterable of entries in the map. */
- [Symbol.iterator](): IterableIterator<[K, V], BuiltinIteratorReturn>;
+ [Symbol.iterator](): BuiltinIterator<[K, V], BuiltinIteratorReturn>;
/**
* Returns an iterable of key, value pairs for every entry in the map.
*/
- entries(): IterableIterator<[K, V], BuiltinIteratorReturn>;
+ entries(): BuiltinIterator<[K, V], BuiltinIteratorReturn>;
/**
* Returns an iterable of keys in the map
*/
- keys(): IterableIterator<K, BuiltinIteratorReturn>;
+ keys(): BuiltinIterator<K, BuiltinIteratorReturn>;
/**
* Returns an iterable of values in the map
*/
- values(): IterableIterator<V, BuiltinIteratorReturn>;
+ values(): BuiltinIterator<V, BuiltinIteratorReturn>;
}
interface ReadonlyMap<K, V> {
/** Returns an iterable of entries in the map. */
- [Symbol.iterator](): IterableIterator<[K, V], BuiltinIteratorReturn>;
+ [Symbol.iterator](): BuiltinIterator<[K, V], BuiltinIteratorReturn>;
/**
* Returns an iterable of key, value pairs for every entry in the map.
*/
- entries(): IterableIterator<[K, V], BuiltinIteratorReturn>;
+ entries(): BuiltinIterator<[K, V], BuiltinIteratorReturn>;
/**
* Returns an iterable of keys in the map
*/
- keys(): IterableIterator<K, BuiltinIteratorReturn>;
+ keys(): BuiltinIterator<K, BuiltinIteratorReturn>;
/**
* Returns an iterable of values in the map
*/
- values(): IterableIterator<V, BuiltinIteratorReturn>;
+ values(): BuiltinIterator<V, BuiltinIteratorReturn>;
}
interface MapConstructor {
@@ -151,40 +155,40 @@ interface WeakMapConstructor {
interface Set<T> {
/** Iterates over values in the set. */
- [Symbol.iterator](): IterableIterator<T, BuiltinIteratorReturn>;
+ [Symbol.iterator](): BuiltinIterator<T, BuiltinIteratorReturn>;
/**
* Returns an iterable of [v,v] pairs for every value `v` in the set.
*/
- entries(): IterableIterator<[T, T], BuiltinIteratorReturn>;
+ entries(): BuiltinIterator<[T, T], BuiltinIteratorReturn>;
/**
* Despite its name, returns an iterable of the values in the set.
*/
- keys(): IterableIterator<T, BuiltinIteratorReturn>;
+ keys(): BuiltinIterator<T, BuiltinIteratorReturn>;
/**
* Returns an iterable of values in the set.
*/
- values(): IterableIterator<T, BuiltinIteratorReturn>;
+ values(): BuiltinIterator<T, BuiltinIteratorReturn>;
}
interface ReadonlySet<T> {
/** Iterates over values in the set. */
- [Symbol.iterator](): IterableIterator<T, BuiltinIteratorReturn>;
+ [Symbol.iterator](): BuiltinIterator<T, BuiltinIteratorReturn>;
/**
* Returns an iterable of [v,v] pairs for every value `v` in the set.
*/
- entries(): IterableIterator<[T, T], BuiltinIteratorReturn>;
+ entries(): BuiltinIterator<[T, T], BuiltinIteratorReturn>;
/**
* Despite its name, returns an iterable of the values in the set.
*/
- keys(): IterableIterator<T, BuiltinIteratorReturn>;
+ keys(): BuiltinIterator<T, BuiltinIteratorReturn>;
/**
* Returns an iterable of values in the set.
*/
- values(): IterableIterator<T, BuiltinIteratorReturn>;
+ values(): BuiltinIterator<T, BuiltinIteratorReturn>;
}
interface SetConstructor {
@@ -219,23 +223,23 @@ interface PromiseConstructor {
interface String {
/** Iterator */
- [Symbol.iterator](): IterableIterator<string, BuiltinIteratorReturn>;
+ [Symbol.iterator](): BuiltinIterator<string, BuiltinIteratorReturn>;
}
interface Int8Array {
- [Symbol.iterator](): IterableIterator<number, BuiltinIteratorReturn>;
+ [Symbol.iterator](): BuiltinIterator<number, BuiltinIteratorReturn>;
/**
* Returns an array of key, value pairs for every entry in the array
*/
- entries(): IterableIterator<[number, number], BuiltinIteratorReturn>;
+ entries(): BuiltinIterator<[number, number], BuiltinIteratorReturn>;
/**
* Returns an list of keys in the array
*/
- keys(): IterableIterator<number, BuiltinIteratorReturn>;
+ keys(): BuiltinIterator<number, BuiltinIteratorReturn>;
/**
* Returns an list of values in the array
*/
- values(): IterableIterator<number, BuiltinIteratorReturn>;
+ values(): BuiltinIterator<number, BuiltinIteratorReturn>;
}
interface Int8ArrayConstructor {
@@ -251,19 +255,19 @@ interface Int8ArrayConstructor {
}
interface Uint8Array {
- [Symbol.iterator](): IterableIterator<number, BuiltinIteratorReturn>;
+ [Symbol.iterator](): BuiltinIterator<number, BuiltinIteratorReturn>;
/**
* Returns an array of key, value pairs for every entry in the array
*/
- entries(): IterableIterator<[number, number], BuiltinIteratorReturn>;
+ entries(): BuiltinIterator<[number, number], BuiltinIteratorReturn>;
/**
* Returns an list of keys in the array
*/
- keys(): IterableIterator<number, BuiltinIteratorReturn>;
+ keys(): BuiltinIterator<number, BuiltinIteratorReturn>;
/**
* Returns an list of values in the array
*/
- values(): IterableIterator<number, BuiltinIteratorReturn>;
+ values(): BuiltinIterator<number, BuiltinIteratorReturn>;
}
interface Uint8ArrayConstructor {
@@ -279,21 +283,21 @@ interface Uint8ArrayConstructor {
}
interface Uint8ClampedArray {
- [Symbol.iterator](): IterableIterator<number, BuiltinIteratorReturn>;
+ [Symbol.iterator](): BuiltinIterator<number, BuiltinIteratorReturn>;
/**
* Returns an array of key, value pairs for every entry in the array
*/
- entries(): IterableIterator<[number, number], BuiltinIteratorReturn>;
+ entries(): BuiltinIterator<[number, number], BuiltinIteratorReturn>;
/**
* Returns an list of keys in the array
*/
- keys(): IterableIterator<number, BuiltinIteratorReturn>;
+ keys(): BuiltinIterator<number, BuiltinIteratorReturn>;
/**
* Returns an list of values in the array
*/
- values(): IterableIterator<number, BuiltinIteratorReturn>;
+ values(): BuiltinIterator<number, BuiltinIteratorReturn>;
}
interface Uint8ClampedArrayConstructor {
@@ -309,21 +313,21 @@ interface Uint8ClampedArrayConstructor {
}
interface Int16Array {
- [Symbol.iterator](): IterableIterator<number, BuiltinIteratorReturn>;
+ [Symbol.iterator](): BuiltinIterator<number, BuiltinIteratorReturn>;
/**
* Returns an array of key, value pairs for every entry in the array
*/
- entries(): IterableIterator<[number, number], BuiltinIteratorReturn>;
+ entries(): BuiltinIterator<[number, number], BuiltinIteratorReturn>;
/**
* Returns an list of keys in the array
*/
- keys(): IterableIterator<number, BuiltinIteratorReturn>;
+ keys(): BuiltinIterator<number, BuiltinIteratorReturn>;
/**
* Returns an list of values in the array
*/
- values(): IterableIterator<number, BuiltinIteratorReturn>;
+ values(): BuiltinIterator<number, BuiltinIteratorReturn>;
}
interface Int16ArrayConstructor {
@@ -339,19 +343,19 @@ interface Int16ArrayConstructor {
}
interface Uint16Array {
- [Symbol.iterator](): IterableIterator<number, BuiltinIteratorReturn>;
+ [Symbol.iterator](): BuiltinIterator<number, BuiltinIteratorReturn>;
/**
* Returns an array of key, value pairs for every entry in the array
*/
- entries(): IterableIterator<[number, number], BuiltinIteratorReturn>;
+ entries(): BuiltinIterator<[number, number], BuiltinIteratorReturn>;
/**
* Returns an list of keys in the array
*/
- keys(): IterableIterator<number, BuiltinIteratorReturn>;
+ keys(): BuiltinIterator<number, BuiltinIteratorReturn>;
/**
* Returns an list of values in the array
*/
- values(): IterableIterator<number, BuiltinIteratorReturn>;
+ values(): BuiltinIterator<number, BuiltinIteratorReturn>;
}
interface Uint16ArrayConstructor {
@@ -367,19 +371,19 @@ interface Uint16ArrayConstructor {
}
interface Int32Array {
- [Symbol.iterator](): IterableIterator<number, BuiltinIteratorReturn>;
+ [Symbol.iterator](): BuiltinIterator<number, BuiltinIteratorReturn>;
/**
* Returns an array of key, value pairs for every entry in the array
*/
- entries(): IterableIterator<[number, number], BuiltinIteratorReturn>;
+ entries(): BuiltinIterator<[number, number], BuiltinIteratorReturn>;
/**
* Returns an list of keys in the array
*/
- keys(): IterableIterator<number, BuiltinIteratorReturn>;
+ keys(): BuiltinIterator<number, BuiltinIteratorReturn>;
/**
* Returns an list of values in the array
*/
- values(): IterableIterator<number, BuiltinIteratorReturn>;
+ values(): BuiltinIterator<number, BuiltinIteratorReturn>;
}
interface Int32ArrayConstructor {
@@ -395,19 +399,19 @@ interface Int32ArrayConstructor {
}
interface Uint32Array {
- [Symbol.iterator](): IterableIterator<number, BuiltinIteratorReturn>;
+ [Symbol.iterator](): BuiltinIterator<number, BuiltinIteratorReturn>;
/**
* Returns an array of key, value pairs for every entry in the array
*/
- entries(): IterableIterator<[number, number], BuiltinIteratorReturn>;
+ entries(): BuiltinIterator<[number, number], BuiltinIteratorReturn>;
/**
* Returns an list of keys in the array
*/
- keys(): IterableIterator<number, BuiltinIteratorReturn>;
+ keys(): BuiltinIterator<number, BuiltinIteratorReturn>;
/**
* Returns an list of values in the array
*/
- values(): IterableIterator<number, BuiltinIteratorReturn>;
+ values(): BuiltinIterator<number, BuiltinIteratorReturn>;
}
interface Uint32ArrayConstructor {
@@ -423,19 +427,19 @@ interface Uint32ArrayConstructor {
}
interface Float32Array {
- [Symbol.iterator](): IterableIterator<number, BuiltinIteratorReturn>;
+ [Symbol.iterator](): BuiltinIterator<number, BuiltinIteratorReturn>;
/**
* Returns an array of key, value pairs for every entry in the array
*/
- entries(): IterableIterator<[number, number], BuiltinIteratorReturn>;
+ entries(): BuiltinIterator<[number, number], BuiltinIteratorReturn>;
/**
* Returns an list of keys in the array
*/
- keys(): IterableIterator<number, BuiltinIteratorReturn>;
+ keys(): BuiltinIterator<number, BuiltinIteratorReturn>;
/**
* Returns an list of values in the array
*/
- values(): IterableIterator<number, BuiltinIteratorReturn>;
+ values(): BuiltinIterator<number, BuiltinIteratorReturn>;
}
interface Float32ArrayConstructor {
@@ -451,19 +455,19 @@ interface Float32ArrayConstructor {
}
interface Float64Array {
- [Symbol.iterator](): IterableIterator<number, BuiltinIteratorReturn>;
+ [Symbol.iterator](): BuiltinIterator<number, BuiltinIteratorReturn>;
/**
* Returns an array of key, value pairs for every entry in the array
*/
- entries(): IterableIterator<[number, number], BuiltinIteratorReturn>;
+ entries(): BuiltinIterator<[number, number], BuiltinIteratorReturn>;
/**
* Returns an list of keys in the array
*/
- keys(): IterableIterator<number, BuiltinIteratorReturn>;
+ keys(): BuiltinIterator<number, BuiltinIteratorReturn>;
/**
* Returns an list of values in the array
*/
- values(): IterableIterator<number, BuiltinIteratorReturn>;
+ values(): BuiltinIterator<number, BuiltinIteratorReturn>;
}
interface Float64ArrayConstructor {
diff --git a/src/lib/es2018.asyncgenerator.d.ts b/src/lib/es2018.asyncgenerator.d.ts
index 15385ddabfcb0..e53975ab4021f 100644
--- a/src/lib/es2018.asyncgenerator.d.ts
+++ b/src/lib/es2018.asyncgenerator.d.ts
@@ -1,6 +1,6 @@
/// <reference lib="es2018.asynciterable" />
-interface AsyncGenerator<T = unknown, TReturn = any, TNext = any> extends AsyncIterator<T, TReturn, TNext> {
+interface AsyncGenerator<T = unknown, TReturn = any, TNext = any> extends AsyncBuiltinIterator<T, TReturn, TNext> {
// NOTE: 'next' is defined using a tuple to ensure we report the correct assignability errors in all places.
next(...[value]: [] | [TNext]): Promise<IteratorResult<T, TReturn>>;
return(value: TReturn | PromiseLike<TReturn>): Promise<IteratorResult<T, TReturn>>;
diff --git a/src/lib/es2018.asynciterable.d.ts b/src/lib/es2018.asynciterable.d.ts
index 4303763db533b..17a9b067fa76f 100644
--- a/src/lib/es2018.asynciterable.d.ts
+++ b/src/lib/es2018.asynciterable.d.ts
@@ -23,3 +23,7 @@ interface AsyncIterable<T, TReturn = any, TNext = any> {
interface AsyncIterableIterator<T, TReturn = any, TNext = any> extends AsyncIterator<T, TReturn, TNext> {
[Symbol.asyncIterator](): AsyncIterableIterator<T, TReturn, TNext>;
}
+
+interface AsyncBuiltinIterator<T, TReturn = any, TNext = any> extends AsyncIterator<T, TReturn, TNext> {
+ [Symbol.asyncIterator](): AsyncBuiltinIterator<T, TReturn, TNext>;
+}
diff --git a/src/lib/es2020.bigint.d.ts b/src/lib/es2020.bigint.d.ts
index e5cafc442d677..c6ee094a332dc 100644
--- a/src/lib/es2020.bigint.d.ts
+++ b/src/lib/es2020.bigint.d.ts
@@ -153,7 +153,7 @@ interface BigInt64Array {
copyWithin(target: number, start: number, end?: number): this;
/** Yields index, value pairs for every entry in the array. */
- entries(): IterableIterator<[number, bigint], BuiltinIteratorReturn>;
+ entries(): BuiltinIterator<[number, bigint], BuiltinIteratorReturn>;
/**
* Determines whether all the members of an array satisfy the specified test.
@@ -238,7 +238,7 @@ interface BigInt64Array {
join(separator?: string): string;
/** Yields each index in the array. */
- keys(): IterableIterator<number, BuiltinIteratorReturn>;
+ keys(): BuiltinIterator<number, BuiltinIteratorReturn>;
/**
* Returns the index of the last occurrence of a value in an array.
@@ -360,9 +360,9 @@ interface BigInt64Array {
valueOf(): BigInt64Array;
/** Yields each value in the array. */
- values(): IterableIterator<bigint, BuiltinIteratorReturn>;
+ values(): BuiltinIterator<bigint, BuiltinIteratorReturn>;
- [Symbol.iterator](): IterableIterator<bigint, BuiltinIteratorReturn>;
+ [Symbol.iterator](): BuiltinIterator<bigint, BuiltinIteratorReturn>;
readonly [Symbol.toStringTag]: "BigInt64Array";
@@ -425,7 +425,7 @@ interface BigUint64Array {
copyWithin(target: number, start: number, end?: number): this;
/** Yields index, value pairs for every entry in the array. */
- entries(): IterableIterator<[number, bigint], BuiltinIteratorReturn>;
+ entries(): BuiltinIterator<[number, bigint], BuiltinIteratorReturn>;
/**
* Determines whether all the members of an array satisfy the specified test.
@@ -510,7 +510,7 @@ interface BigUint64Array {
join(separator?: string): string;
/** Yields each index in the array. */
- keys(): IterableIterator<number, BuiltinIteratorReturn>;
+ keys(): BuiltinIterator<number, BuiltinIteratorReturn>;
/**
* Returns the index of the last occurrence of a value in an array.
@@ -632,9 +632,9 @@ interface BigUint64Array {
valueOf(): BigUint64Array;
/** Yields each value in the array. */
- values(): IterableIterator<bigint, BuiltinIteratorReturn>;
+ values(): BuiltinIterator<bigint, BuiltinIteratorReturn>;
- [Symbol.iterator](): IterableIterator<bigint, BuiltinIteratorReturn>;
+ [Symbol.iterator](): BuiltinIterator<bigint, BuiltinIteratorReturn>;
readonly [Symbol.toStringTag]: "BigUint64Array";
diff --git a/src/lib/es2020.string.d.ts b/src/lib/es2020.string.d.ts
index 7f7911d517d02..4d23b7f31941a 100644
--- a/src/lib/es2020.string.d.ts
+++ b/src/lib/es2020.string.d.ts
@@ -6,7 +6,7 @@ interface String {
* containing the results of that search.
* @param regexp A variable name or string literal containing the regular expression pattern and flags.
*/
- matchAll(regexp: RegExp): IterableIterator<RegExpExecArray, BuiltinIteratorReturn>;
+ matchAll(regexp: RegExp): BuiltinIterator<RegExpExecArray, BuiltinIteratorReturn>;
/** Converts all alphabetic characters to lowercase, taking into account the host environment's current locale. */
toLocaleLowerCase(locales?: Intl.LocalesArgument): string;
diff --git a/src/lib/es2020.symbol.wellknown.d.ts b/src/lib/es2020.symbol.wellknown.d.ts
index 0a65134b7c2d2..07aab68a09265 100644
--- a/src/lib/es2020.symbol.wellknown.d.ts
+++ b/src/lib/es2020.symbol.wellknown.d.ts
@@ -15,5 +15,5 @@ interface RegExp {
* containing the results of that search.
* @param string A string to search within.
*/
- [Symbol.matchAll](str: string): IterableIterator<RegExpMatchArray, BuiltinIteratorReturn>;
+ [Symbol.matchAll](str: string): BuiltinIterator<RegExpMatchArray, BuiltinIteratorReturn>;
}
diff --git a/src/lib/es2022.intl.d.ts b/src/lib/es2022.intl.d.ts
index e92a67f7a88d6..115e15a528249 100644
--- a/src/lib/es2022.intl.d.ts
+++ b/src/lib/es2022.intl.d.ts
@@ -37,7 +37,7 @@ declare namespace Intl {
containing(codeUnitIndex?: number): SegmentData;
/** Returns an iterator to iterate over the segments. */
- [Symbol.iterator](): IterableIterator<SegmentData, BuiltinIteratorReturn>;
+ [Symbol.iterator](): BuiltinIterator<SegmentData, BuiltinIteratorReturn>;
}
interface SegmentData {
diff --git a/src/lib/esnext.d.ts b/src/lib/esnext.d.ts
index 94aedd4480ccd..877f4c133c534 100644
--- a/src/lib/esnext.d.ts
+++ b/src/lib/esnext.d.ts
@@ -8,3 +8,4 @@
/// <reference lib="esnext.array" />
/// <reference lib="esnext.regexp" />
/// <reference lib="esnext.string" />
+/// <reference lib="esnext.iterator" />
diff --git a/src/lib/esnext.iterator.d.ts b/src/lib/esnext.iterator.d.ts
new file mode 100644
index 0000000000000..6a8a85eea873e
--- /dev/null
+++ b/src/lib/esnext.iterator.d.ts
@@ -0,0 +1,130 @@
+/// <reference lib="es2015.iterable" />
+
+// NOTE: This is specified as what is essentially an unreachable module. All actual global declarations can be found
+// in the `declare global` section, below. This is necessary as there is currently no way to declare an `abstract`
+// member without declaring a `class`, but declaring `class Iterator<T>` globally would conflict with TypeScript's
+// general purpose `Iterator<T>` interface.
+export {};
+
+// Abstract type that allows us to mark `next` as `abstract`
+declare abstract class Iterator<T> { // eslint-disable-line @typescript-eslint/no-unsafe-declaration-merging
+ abstract next(value?: unknown): IteratorResult<T, undefined>;
+}
+
+// Merge all members of `BuiltinIterator<T>` into `Iterator<T>`
+interface Iterator<T> extends globalThis.BuiltinIterator<T, undefined, unknown> {}
+
+// Capture the `Iterator` constructor in a type we can use in the `extends` clause of `IteratorConstructor`.
+type BuiltinIteratorConstructor = typeof Iterator;
+
+declare global {
+ // Global `BuiltinIterator<T>` interface that can be augmented by polyfills
+ interface BuiltinIterator<T, TReturn, TNext> {
+ /**
+ * Returns this iterator.
+ */
+ [Symbol.iterator](): BuiltinIterator<T, TReturn, TNext>;
+
+ /**
+ * Creates an iterator whose values are the result of applying the callback to the values from this iterator.
+ * @param callbackfn A function that accepts up to two arguments to be used to transform values from the underlying iterator.
+ */
+ map<U>(callbackfn: (value: T, index: number) => U): BuiltinIterator<U, undefined>;
+
+ /**
+ * Creates an iterator whose values are those from this iterator for which the provided predicate returns true.
+ * @param predicate A function that accepts up to two arguments to be used to test values from the underlying iterator.
+ */
+ filter<S extends T>(predicate: (value: T, index: number) => value is S): BuiltinIterator<S, undefined>;
+
+ /**
+ * Creates an iterator whose values are those from this iterator for which the provided predicate returns true.
+ * @param predicate A function that accepts up to two arguments to be used to test values from the underlying iterator.
+ */
+ filter(predicate: (value: T, index: number) => unknown): BuiltinIterator<T, undefined>;
+
+ /**
+ * Creates an iterator whose values are the values from this iterator, stopping once the provided limit is reached.
+ * @param limit The maximum number of values to yield.
+ */
+ take(limit: number): BuiltinIterator<T, undefined>;
+
+ /**
+ * Creates an iterator whose values are the values from this iterator after skipping the provided count.
+ * @param count The number of values to drop.
+ */
+ drop(count: number): BuiltinIterator<T, undefined>;
+
+ /**
+ * Creates an iterator whose values are the result of applying the callback to the values from this iterator and then flattening the resulting iterators or iterables.
+ * @param callback A function that accepts up to two arguments to be used to transform values from the underlying iterator into new iterators or iterables to be flattened into the result.
+ */
+ flatMap<U>(callback: (value: T, index: number) => Iterator<U, unknown, undefined> | Iterable<U, unknown, undefined>): BuiltinIterator<U, undefined>;
+
+ /**
+ * Calls the specified callback function for all the elements in this iterator. The return value of the callback function is the accumulated result, and is provided as an argument in the next call to the callback function.
+ * @param callbackfn A function that accepts up to three arguments. The reduce method calls the callbackfn function one time for each element in the iterator.
+ * @param initialValue If initialValue is specified, it is used as the initial value to start the accumulation. The first call to the callbackfn function provides this value as an argument instead of a value from the iterator.
+ */
+ reduce(callbackfn: (previousValue: T, currentValue: T, currentIndex: number) => T): T;
+ reduce(callbackfn: (previousValue: T, currentValue: T, currentIndex: number) => T, initialValue: T): T;
+
+ /**
+ * Calls the specified callback function for all the elements in this iterator. The return value of the callback function is the accumulated result, and is provided as an argument in the next call to the callback function.
+ * @param callbackfn A function that accepts up to three arguments. The reduce method calls the callbackfn function one time for each element in the iterator.
+ * @param initialValue If initialValue is specified, it is used as the initial value to start the accumulation. The first call to the callbackfn function provides this value as an argument instead of a value from the iterator.
+ */
+ reduce<U>(callbackfn: (previousValue: U, currentValue: T, currentIndex: number) => U, initialValue: U): U;
+
+ /**
+ * Creates a new array from the values yielded by this iterator.
+ */
+ toArray(): T[];
+
+ /**
+ * Performs the specified action for each element in the iterator.
+ * @param callbackfn A function that accepts up to two arguments. forEach calls the callbackfn function one time for each element in the iterator.
+ */
+ forEach(callbackfn: (value: T, index: number) => void): void;
+
+ /**
+ * Determines whether the specified callback function returns true for any element of this iterator.
+ * @param predicate A function that accepts up to two arguments. The some method calls
+ * the predicate function for each element in this iterator until the predicate returns a value
+ * true, or until the end of the iterator.
+ */
+ some(predicate: (value: T, index: number) => unknown): boolean;
+
+ /**
+ * Determines whether all the members of this iterator satisfy the specified test.
+ * @param predicate A function that accepts up to two arguments. The every method calls
+ * the predicate function for each element in this iterator until the predicate returns
+ * false, or until the end of this iterator.
+ */
+ every(predicate: (value: T, index: number) => unknown): boolean;
+
+ /**
+ * Returns the value of the first element in this iterator where predicate is true, and undefined
+ * otherwise.
+ * @param predicate find calls predicate once for each element of this iterator, in
+ * order, until it finds one where predicate returns true. If such an element is found, find
+ * immediately returns that element value. Otherwise, find returns undefined.
+ */
+ find<S extends T>(predicate: (value: T, index: number) => value is S): S | undefined;
+ find(predicate: (value: T, index: number) => unknown): T | undefined;
+
+ readonly [Symbol.toStringTag]: string;
+ }
+
+ // Global `IteratorConstructor` interface that can be augmented by polyfills
+ interface IteratorConstructor extends BuiltinIteratorConstructor {
+ /**
+ * Creates a native iterator from an iterator or iterable object.
+ * Returns its input if the input already inherits from the built-in Iterator class.
+ * @param value An iterator or iterable object to convert a native iterator.
+ */
+ from<T>(value: Iterator<T, unknown, undefined> | Iterable<T, unknown, undefined>): BuiltinIterator<T, undefined>;
+ }
+
+ var Iterator: IteratorConstructor;
+}
diff --git a/src/lib/libs.json b/src/lib/libs.json
index 9477c3d78edcd..fb40b9d10dcf2 100644
--- a/src/lib/libs.json
+++ b/src/lib/libs.json
@@ -80,6 +80,7 @@
"esnext.array",
"esnext.regexp",
"esnext.string",
+ "esnext.iterator",
"decorators",
"decorators.legacy",
// Default libraries
diff --git a/tests/baselines/reference/argumentsObjectIterator02_ES6.types b/tests/baselines/reference/argumentsObjectIterator02_ES6.types
index 4dd2e090a434c..c192ab9617b08 100644
--- a/tests/baselines/reference/argumentsObjectIterator02_ES6.types
+++ b/tests/baselines/reference/argumentsObjectIterator02_ES6.types
@@ -12,10 +12,10 @@ function doubleAndReturnAsArray(x: number, y: number, z: number): [number, numbe
> : ^^^^^^
let blah = arguments[Symbol.iterator];
->blah : () => IterableIterator<any, BuiltinIteratorReturn>
-> : ^^^^^^
->arguments[Symbol.iterator] : () => IterableIterator<any, BuiltinIteratorReturn>
-> : ^^^^^^
+>blah : () => BuiltinIterator<any, BuiltinIteratorReturn>
+> : ^^^^^^
+>arguments[Symbol.iterator] : () => BuiltinIterator<any, BuiltinIteratorReturn>
+> : ^^^^^^
>arguments : IArguments
> : ^^^^^^^^^^
>Symbol.iterator : unique symbol
@@ -33,10 +33,10 @@ function doubleAndReturnAsArray(x: number, y: number, z: number): [number, numbe
for (let arg of blah()) {
>arg : any
->blah() : IterableIterator<any>
-> : ^^^^^^^^^^^^^^^^^^^^^
->blah : () => IterableIterator<any, BuiltinIteratorReturn>
-> : ^^^^^^
+>blah() : BuiltinIterator<any, any, any>
+> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+>blah : () => BuiltinIterator<any, BuiltinIteratorReturn>
+> : ^^^^^^
result.push(arg + arg);
>result.push(arg + arg) : number
diff --git a/tests/baselines/reference/arrayFrom.types b/tests/baselines/reference/arrayFrom.types
index d8c53ad231cb4..8829708cedd67 100644
--- a/tests/baselines/reference/arrayFrom.types
+++ b/tests/baselines/reference/arrayFrom.types
@@ -83,14 +83,14 @@ const result2: A[] = Array.from(inputA.values());
> : ^^^^^^^^^^^^^^^^
>from : { <T>(arrayLike: ArrayLike<T>): T[]; <T, U>(arrayLike: ArrayLike<T>, mapfn: (v: T, k: number) => U, thisArg?: any): U[]; <T>(iterable: Iterable<T> | ArrayLike<T>): T[]; <T, U>(iterable: Iterable<T> | ArrayLike<T>, mapfn: (v: T, k: number) => U, thisArg?: any): U[]; }
> : ^^^ ^^ ^^ ^^^ ^^^ ^^ ^^ ^^ ^^ ^^ ^^ ^^^ ^^^ ^^^ ^^ ^^ ^^^ ^^^ ^^ ^^ ^^ ^^ ^^ ^^ ^^^ ^^^ ^^^
->inputA.values() : IterableIterator<A>
-> : ^^^^^^^^^^^^^^^^^^^
->inputA.values : () => IterableIterator<A>
-> : ^^^^^^^^^^^^^^^^^^^^^^^^^
+>inputA.values() : BuiltinIterator<A, any, any>
+> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+>inputA.values : () => BuiltinIterator<A, any, any>
+> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
>inputA : A[]
> : ^^^
->values : () => IterableIterator<A>
-> : ^^^^^^^^^^^^^^^^^^^^^^^^^
+>values : () => BuiltinIterator<A, any, any>
+> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
const result3: B[] = Array.from(inputA.values()); // expect error
>result3 : B[]
@@ -103,14 +103,14 @@ const result3: B[] = Array.from(inputA.values()); // expect error
> : ^^^^^^^^^^^^^^^^
>from : { <T>(arrayLike: ArrayLike<T>): T[]; <T, U>(arrayLike: ArrayLike<T>, mapfn: (v: T, k: number) => U, thisArg?: any): U[]; <T>(iterable: Iterable<T> | ArrayLike<T>): T[]; <T, U>(iterable: Iterable<T> | ArrayLike<T>, mapfn: (v: T, k: number) => U, thisArg?: any): U[]; }
> : ^^^ ^^ ^^ ^^^ ^^^ ^^ ^^ ^^ ^^ ^^ ^^ ^^^ ^^^ ^^^ ^^ ^^ ^^^ ^^^ ^^ ^^ ^^ ^^ ^^ ^^ ^^^ ^^^ ^^^
->inputA.values() : IterableIterator<A>
-> : ^^^^^^^^^^^^^^^^^^^
->inputA.values : () => IterableIterator<A>
-> : ^^^^^^^^^^^^^^^^^^^^^^^^^
+>inputA.values() : BuiltinIterator<A, any, any>
+> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+>inputA.values : () => BuiltinIterator<A, any, any>
+> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
>inputA : A[]
> : ^^^
->values : () => IterableIterator<A>
-> : ^^^^^^^^^^^^^^^^^^^^^^^^^
+>values : () => BuiltinIterator<A, any, any>
+> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
const result4: A[] = Array.from(inputB, ({ b }): A => ({ a: b }));
>result4 : A[]
diff --git a/tests/baselines/reference/asyncYieldStarContextualType.types b/tests/baselines/reference/asyncYieldStarContextualType.types
index 1a74d90e887fe..fa37a8b0c9b11 100644
--- a/tests/baselines/reference/asyncYieldStarContextualType.types
+++ b/tests/baselines/reference/asyncYieldStarContextualType.types
@@ -1,5 +1,9 @@
//// [tests/cases/compiler/asyncYieldStarContextualType.ts] ////
+=== Performance Stats ===
+Type Count: 1,000
+Instantiation count: 2,500
+
=== asyncYieldStarContextualType.ts ===
// https://github.com/microsoft/TypeScript/issues/57903
interface Result<T, E> {
diff --git a/tests/baselines/reference/builtinIterator.errors.txt b/tests/baselines/reference/builtinIterator.errors.txt
new file mode 100644
index 0000000000000..26749ea24a683
--- /dev/null
+++ b/tests/baselines/reference/builtinIterator.errors.txt
@@ -0,0 +1,164 @@
+builtinIterator.ts(38,1): error TS2511: Cannot create an instance of an abstract class.
+builtinIterator.ts(40,7): error TS2515: Non-abstract class 'C' does not implement inherited abstract member next from class 'Iterator<number>'.
+builtinIterator.ts(44,3): error TS2416: Property 'next' in type 'BadIterator1' is not assignable to the same property in base type 'Iterator<number>'.
+ Type '() => { readonly done: false; readonly value: 0; } | { readonly done: true; readonly value: "a string"; }' is not assignable to type '(value?: unknown) => IteratorResult<number, undefined>'.
+ Type '{ readonly done: false; readonly value: 0; } | { readonly done: true; readonly value: "a string"; }' is not assignable to type 'IteratorResult<number, undefined>'.
+ Type '{ readonly done: true; readonly value: "a string"; }' is not assignable to type 'IteratorResult<number, undefined>'.
+ Type '{ readonly done: true; readonly value: "a string"; }' is not assignable to type 'IteratorReturnResult<undefined>'.
+ Types of property 'value' are incompatible.
+ Type '"a string"' is not assignable to type 'undefined'.
+builtinIterator.ts(54,3): error TS2416: Property 'next' in type 'BadIterator2' is not assignable to the same property in base type 'Iterator<number>'.
+ Type '() => { done: boolean; value: number; }' is not assignable to type '(value?: unknown) => IteratorResult<number, undefined>'.
+ Type '{ done: boolean; value: number; }' is not assignable to type 'IteratorResult<number, undefined>'.
+ Type '{ done: boolean; value: number; }' is not assignable to type 'IteratorYieldResult<number>'.
+ Types of property 'done' are incompatible.
+ Type 'boolean' is not assignable to type 'false'.
+builtinIterator.ts(60,3): error TS2416: Property 'next' in type 'BadIterator3' is not assignable to the same property in base type 'Iterator<number>'.
+ Type '() => { done: boolean; value: number; } | { done: boolean; value: string; }' is not assignable to type '(value?: unknown) => IteratorResult<number, undefined>'.
+ Type '{ done: boolean; value: number; } | { done: boolean; value: string; }' is not assignable to type 'IteratorResult<number, undefined>'.
+ Type '{ done: boolean; value: number; }' is not assignable to type 'IteratorResult<number, undefined>'.
+ Type '{ done: boolean; value: number; }' is not assignable to type 'IteratorYieldResult<number>'.
+ Types of property 'done' are incompatible.
+ Type 'boolean' is not assignable to type 'false'.
+builtinIterator.ts(70,29): error TS2345: Argument of type 'Generator<string, number, boolean>' is not assignable to parameter of type 'Iterator<string, unknown, undefined> | Iterable<string, unknown, undefined>'.
+ Type 'Generator<string, number, boolean>' is not assignable to type 'Iterator<string, unknown, undefined>'.
+ Types of property 'next' are incompatible.
+ Type '(...[value]: [] | [boolean]) => IteratorResult<string, number>' is not assignable to type '(...[value]: [] | [undefined]) => IteratorResult<string, unknown>'.
+ Types of parameters '__0' and '__0' are incompatible.
+ Type '[] | [undefined]' is not assignable to type '[] | [boolean]'.
+ Type '[undefined]' is not assignable to type '[] | [boolean]'.
+ Type '[undefined]' is not assignable to type '[boolean]'.
+ Type 'undefined' is not assignable to type 'boolean'.
+builtinIterator.ts(73,35): error TS2322: Type 'Generator<string, number, boolean>' is not assignable to type 'Iterator<string, unknown, undefined> | Iterable<string, unknown, undefined>'.
+ Type 'Generator<string, number, boolean>' is not assignable to type 'Iterator<string, unknown, undefined>'.
+ Types of property 'next' are incompatible.
+ Type '(...[value]: [] | [boolean]) => IteratorResult<string, number>' is not assignable to type '(...[value]: [] | [undefined]) => IteratorResult<string, unknown>'.
+ Types of parameters '__0' and '__0' are incompatible.
+ Type '[] | [undefined]' is not assignable to type '[] | [boolean]'.
+ Type '[undefined]' is not assignable to type '[] | [boolean]'.
+ Type '[undefined]' is not assignable to type '[boolean]'.
+ Type 'undefined' is not assignable to type 'boolean'.
+
+
+==== builtinIterator.ts (7 errors) ====
+ const iterator = Iterator.from([0, 1, 2]);
+
+ const mapped = iterator.map(String);
+
+ const filtered = iterator.filter(x => x > 0);
+
+ function isZero(x: number): x is 0 {
+ return x === 0;
+ }
+ const zero = iterator.filter(isZero);
+
+ const iteratorFromBare = Iterator.from({
+ next() {
+ return {
+ done: Math.random() < .5,
+ value: "a string",
+ };
+ },
+ });
+
+
+ function* gen() {
+ yield 0;
+ }
+
+ const mappedGen = gen().map(x => x === 0 ? "zero" : "other");
+
+ const mappedValues = [0, 1, 2].values().map(x => x === 0 ? "zero" : "other");
+
+
+ class GoodIterator extends Iterator<number> {
+ next() {
+ return { done: false, value: 0 } as const;
+ }
+ }
+
+ // error cases
+ new Iterator<number>();
+ ~~~~~~~~~~~~~~~~~~~~~~
+!!! error TS2511: Cannot create an instance of an abstract class.
+
+ class C extends Iterator<number> {}
+ ~
+!!! error TS2515: Non-abstract class 'C' does not implement inherited abstract member next from class 'Iterator<number>'.
+
+ // it's unfortunate that these are an error
+ class BadIterator1 extends Iterator<number> {
+ next() {
+ ~~~~
+!!! error TS2416: Property 'next' in type 'BadIterator1' is not assignable to the same property in base type 'Iterator<number>'.
+!!! error TS2416: Type '() => { readonly done: false; readonly value: 0; } | { readonly done: true; readonly value: "a string"; }' is not assignable to type '(value?: unknown) => IteratorResult<number, undefined>'.
+!!! error TS2416: Type '{ readonly done: false; readonly value: 0; } | { readonly done: true; readonly value: "a string"; }' is not assignable to type 'IteratorResult<number, undefined>'.
+!!! error TS2416: Type '{ readonly done: true; readonly value: "a string"; }' is not assignable to type 'IteratorResult<number, undefined>'.
+!!! error TS2416: Type '{ readonly done: true; readonly value: "a string"; }' is not assignable to type 'IteratorReturnResult<undefined>'.
+!!! error TS2416: Types of property 'value' are incompatible.
+!!! error TS2416: Type '"a string"' is not assignable to type 'undefined'.
+ if (Math.random() < .5) {
+ return { done: false, value: 0 } as const;
+ } else {
+ return { done: true, value: "a string" } as const;
+ }
+ }
+ }
+
+ class BadIterator2 extends Iterator<number> {
+ next() {
+ ~~~~
+!!! error TS2416: Property 'next' in type 'BadIterator2' is not assignable to the same property in base type 'Iterator<number>'.
+!!! error TS2416: Type '() => { done: boolean; value: number; }' is not assignable to type '(value?: unknown) => IteratorResult<number, undefined>'.
+!!! error TS2416: Type '{ done: boolean; value: number; }' is not assignable to type 'IteratorResult<number, undefined>'.
+!!! error TS2416: Type '{ done: boolean; value: number; }' is not assignable to type 'IteratorYieldResult<number>'.
+!!! error TS2416: Types of property 'done' are incompatible.
+!!! error TS2416: Type 'boolean' is not assignable to type 'false'.
+ return { done: false, value: 0 };
+ }
+ }
+
+ class BadIterator3 extends Iterator<number> {
+ next() {
+ ~~~~
+!!! error TS2416: Property 'next' in type 'BadIterator3' is not assignable to the same property in base type 'Iterator<number>'.
+!!! error TS2416: Type '() => { done: boolean; value: number; } | { done: boolean; value: string; }' is not assignable to type '(value?: unknown) => IteratorResult<number, undefined>'.
+!!! error TS2416: Type '{ done: boolean; value: number; } | { done: boolean; value: string; }' is not assignable to type 'IteratorResult<number, undefined>'.
+!!! error TS2416: Type '{ done: boolean; value: number; }' is not assignable to type 'IteratorResult<number, undefined>'.
+!!! error TS2416: Type '{ done: boolean; value: number; }' is not assignable to type 'IteratorYieldResult<number>'.
+!!! error TS2416: Types of property 'done' are incompatible.
+!!! error TS2416: Type 'boolean' is not assignable to type 'false'.
+ if (Math.random() < .5) {
+ return { done: false, value: 0 };
+ } else {
+ return { done: true, value: "a string" };
+ }
+ }
+ }
+
+ declare const g1: Generator<string, number, boolean>;
+ const iter1 = Iterator.from(g1);
+ ~~
+!!! error TS2345: Argument of type 'Generator<string, number, boolean>' is not assignable to parameter of type 'Iterator<string, unknown, undefined> | Iterable<string, unknown, undefined>'.
+!!! error TS2345: Type 'Generator<string, number, boolean>' is not assignable to type 'Iterator<string, unknown, undefined>'.
+!!! error TS2345: Types of property 'next' are incompatible.
+!!! error TS2345: Type '(...[value]: [] | [boolean]) => IteratorResult<string, number>' is not assignable to type '(...[value]: [] | [undefined]) => IteratorResult<string, unknown>'.
+!!! error TS2345: Types of parameters '__0' and '__0' are incompatible.
+!!! error TS2345: Type '[] | [undefined]' is not assignable to type '[] | [boolean]'.
+!!! error TS2345: Type '[undefined]' is not assignable to type '[] | [boolean]'.
+!!! error TS2345: Type '[undefined]' is not assignable to type '[boolean]'.
+!!! error TS2345: Type 'undefined' is not assignable to type 'boolean'.
+
+ declare const iter2: BuiltinIterator<string, BuiltinIteratorReturn>;
+ const iter3 = iter2.flatMap(() => g1);
+ ~~
+!!! error TS2322: Type 'Generator<string, number, boolean>' is not assignable to type 'Iterator<string, unknown, undefined> | Iterable<string, unknown, undefined>'.
+!!! error TS2322: Type 'Generator<string, number, boolean>' is not assignable to type 'Iterator<string, unknown, undefined>'.
+!!! error TS2322: Types of property 'next' are incompatible.
+!!! error TS2322: Type '(...[value]: [] | [boolean]) => IteratorResult<string, number>' is not assignable to type '(...[value]: [] | [undefined]) => IteratorResult<string, unknown>'.
+!!! error TS2322: Types of parameters '__0' and '__0' are incompatible.
+!!! error TS2322: Type '[] | [undefined]' is not assignable to type '[] | [boolean]'.
+!!! error TS2322: Type '[undefined]' is not assignable to type '[] | [boolean]'.
+!!! error TS2322: Type '[undefined]' is not assignable to type '[boolean]'.
+!!! error TS2322: Type 'undefined' is not assignable to type 'boolean'.
+!!! related TS6502 lib.esnext.iterator.d.ts:--:--: The expected type comes from the return type of this signature.
\ No newline at end of file
diff --git a/tests/baselines/reference/builtinIterator.js b/tests/baselines/reference/builtinIterator.js
new file mode 100644
index 0000000000000..192d53b106b25
--- /dev/null
+++ b/tests/baselines/reference/builtinIterator.js
@@ -0,0 +1,136 @@
+//// [tests/cases/compiler/builtinIterator.ts] ////
+
+//// [builtinIterator.ts]
+const iterator = Iterator.from([0, 1, 2]);
+
+const mapped = iterator.map(String);
+
+const filtered = iterator.filter(x => x > 0);
+
+function isZero(x: number): x is 0 {
+ return x === 0;
+}
+const zero = iterator.filter(isZero);
+
+const iteratorFromBare = Iterator.from({
+ next() {
+ return {
+ done: Math.random() < .5,
+ value: "a string",
+ };
+ },
+});
+
+
+function* gen() {
+ yield 0;
+}
+
+const mappedGen = gen().map(x => x === 0 ? "zero" : "other");
+
+const mappedValues = [0, 1, 2].values().map(x => x === 0 ? "zero" : "other");
+
+
+class GoodIterator extends Iterator<number> {
+ next() {
+ return { done: false, value: 0 } as const;
+ }
+}
+
+// error cases
+new Iterator<number>();
+
+class C extends Iterator<number> {}
+
+// it's unfortunate that these are an error
+class BadIterator1 extends Iterator<number> {
+ next() {
+ if (Math.random() < .5) {
+ return { done: false, value: 0 } as const;
+ } else {
+ return { done: true, value: "a string" } as const;
+ }
+ }
+}
+
+class BadIterator2 extends Iterator<number> {
+ next() {
+ return { done: false, value: 0 };
+ }
+}
+
+class BadIterator3 extends Iterator<number> {
+ next() {
+ if (Math.random() < .5) {
+ return { done: false, value: 0 };
+ } else {
+ return { done: true, value: "a string" };
+ }
+ }
+}
+
+declare const g1: Generator<string, number, boolean>;
+const iter1 = Iterator.from(g1);
+
+declare const iter2: BuiltinIterator<string, BuiltinIteratorReturn>;
+const iter3 = iter2.flatMap(() => g1);
+
+//// [builtinIterator.js]
+"use strict";
+const iterator = Iterator.from([0, 1, 2]);
+const mapped = iterator.map(String);
+const filtered = iterator.filter(x => x > 0);
+function isZero(x) {
+ return x === 0;
+}
+const zero = iterator.filter(isZero);
+const iteratorFromBare = Iterator.from({
+ next() {
+ return {
+ done: Math.random() < .5,
+ value: "a string",
+ };
+ },
+});
+function* gen() {
+ yield 0;
+}
+const mappedGen = gen().map(x => x === 0 ? "zero" : "other");
+const mappedValues = [0, 1, 2].values().map(x => x === 0 ? "zero" : "other");
+class GoodIterator extends Iterator {
+ next() {
+ return { done: false, value: 0 };
+ }
+}
+// error cases
+new Iterator();
+class C extends Iterator {
+}
+// it's unfortunate that these are an error
+class BadIterator1 extends Iterator {
+ next() {
+ if (Math.random() < .5) {
+ return { done: false, value: 0 };
+ }
+ else {
+ return { done: true, value: "a string" };
+ }
+ }
+}
+class BadIterator2 extends Iterator {
+ next() {
+ return { done: false, value: 0 };
+ }
+}
+class BadIterator3 extends Iterator {
+ next() {
+ if (Math.random() < .5) {
+ return { done: false, value: 0 };
+ }
+ else {
+ return { done: true, value: "a string" };
+ }
+ }
+}
+const iter1 = Iterator.from(g1);
+const iter3 = iter2.flatMap(() => g1);
diff --git a/tests/baselines/reference/builtinIterator.symbols b/tests/baselines/reference/builtinIterator.symbols
new file mode 100644
index 0000000000000..4c8795a5a1dfe
--- /dev/null
+++ b/tests/baselines/reference/builtinIterator.symbols
@@ -0,0 +1,196 @@
+//// [tests/cases/compiler/builtinIterator.ts] ////
+
+=== builtinIterator.ts ===
+const iterator = Iterator.from([0, 1, 2]);
+>iterator : Symbol(iterator, Decl(builtinIterator.ts, 0, 5))
+>Iterator.from : Symbol(IteratorConstructor.from, Decl(lib.esnext.iterator.d.ts, --, --))
+>Iterator : Symbol(Iterator, Decl(lib.es2015.iterable.d.ts, --, --), Decl(lib.esnext.iterator.d.ts, --, --))
+>from : Symbol(IteratorConstructor.from, Decl(lib.esnext.iterator.d.ts, --, --))
+
+const mapped = iterator.map(String);
+>mapped : Symbol(mapped, Decl(builtinIterator.ts, 2, 5))
+>iterator.map : Symbol(BuiltinIterator.map, Decl(lib.esnext.iterator.d.ts, --, --))
+>iterator : Symbol(iterator, Decl(builtinIterator.ts, 0, 5))
+>map : Symbol(BuiltinIterator.map, Decl(lib.esnext.iterator.d.ts, --, --))
+>String : Symbol(String, Decl(lib.es5.d.ts, --, --), Decl(lib.es5.d.ts, --, --), Decl(lib.es5.d.ts, --, --), Decl(lib.es2015.core.d.ts, --, --), Decl(lib.es2015.iterable.d.ts, --, --) ... and 7 more)
+
+const filtered = iterator.filter(x => x > 0);
+>filtered : Symbol(filtered, Decl(builtinIterator.ts, 4, 5))
+>iterator.filter : Symbol(BuiltinIterator.filter, Decl(lib.esnext.iterator.d.ts, --, --), Decl(lib.esnext.iterator.d.ts, --, --))
+>iterator : Symbol(iterator, Decl(builtinIterator.ts, 0, 5))
+>filter : Symbol(BuiltinIterator.filter, Decl(lib.esnext.iterator.d.ts, --, --), Decl(lib.esnext.iterator.d.ts, --, --))
+>x : Symbol(x, Decl(builtinIterator.ts, 4, 33))
+>x : Symbol(x, Decl(builtinIterator.ts, 4, 33))
+
+function isZero(x: number): x is 0 {
+>isZero : Symbol(isZero, Decl(builtinIterator.ts, 4, 45))
+>x : Symbol(x, Decl(builtinIterator.ts, 6, 16))
+>x : Symbol(x, Decl(builtinIterator.ts, 6, 16))
+
+ return x === 0;
+>x : Symbol(x, Decl(builtinIterator.ts, 6, 16))
+}
+const zero = iterator.filter(isZero);
+>zero : Symbol(zero, Decl(builtinIterator.ts, 9, 5))
+>iterator.filter : Symbol(BuiltinIterator.filter, Decl(lib.esnext.iterator.d.ts, --, --), Decl(lib.esnext.iterator.d.ts, --, --))
+>iterator : Symbol(iterator, Decl(builtinIterator.ts, 0, 5))
+>filter : Symbol(BuiltinIterator.filter, Decl(lib.esnext.iterator.d.ts, --, --), Decl(lib.esnext.iterator.d.ts, --, --))
+>isZero : Symbol(isZero, Decl(builtinIterator.ts, 4, 45))
+
+const iteratorFromBare = Iterator.from({
+>iteratorFromBare : Symbol(iteratorFromBare, Decl(builtinIterator.ts, 11, 5))
+>Iterator.from : Symbol(IteratorConstructor.from, Decl(lib.esnext.iterator.d.ts, --, --))
+>Iterator : Symbol(Iterator, Decl(lib.es2015.iterable.d.ts, --, --), Decl(lib.esnext.iterator.d.ts, --, --))
+>from : Symbol(IteratorConstructor.from, Decl(lib.esnext.iterator.d.ts, --, --))
+
+ next() {
+>next : Symbol(next, Decl(builtinIterator.ts, 11, 40))
+
+ return {
+ done: Math.random() < .5,
+>done : Symbol(done, Decl(builtinIterator.ts, 13, 12))
+>Math.random : Symbol(Math.random, Decl(lib.es5.d.ts, --, --))
+>Math : Symbol(Math, Decl(lib.es5.d.ts, --, --), Decl(lib.es5.d.ts, --, --), Decl(lib.es2015.core.d.ts, --, --), Decl(lib.es2015.symbol.wellknown.d.ts, --, --))
+>random : Symbol(Math.random, Decl(lib.es5.d.ts, --, --))
+
+ value: "a string",
+>value : Symbol(value, Decl(builtinIterator.ts, 14, 31))
+
+ };
+ },
+});
+
+
+function* gen() {
+>gen : Symbol(gen, Decl(builtinIterator.ts, 18, 3))
+
+ yield 0;
+}
+
+const mappedGen = gen().map(x => x === 0 ? "zero" : "other");
+>mappedGen : Symbol(mappedGen, Decl(builtinIterator.ts, 25, 5))
+>gen().map : Symbol(BuiltinIterator.map, Decl(lib.esnext.iterator.d.ts, --, --))
+>gen : Symbol(gen, Decl(builtinIterator.ts, 18, 3))
+>map : Symbol(BuiltinIterator.map, Decl(lib.esnext.iterator.d.ts, --, --))
+>x : Symbol(x, Decl(builtinIterator.ts, 25, 28))
+>x : Symbol(x, Decl(builtinIterator.ts, 25, 28))
+
+const mappedValues = [0, 1, 2].values().map(x => x === 0 ? "zero" : "other");
+>mappedValues : Symbol(mappedValues, Decl(builtinIterator.ts, 27, 5))
+>[0, 1, 2].values().map : Symbol(BuiltinIterator.map, Decl(lib.esnext.iterator.d.ts, --, --))
+>[0, 1, 2].values : Symbol(Array.values, Decl(lib.es2015.iterable.d.ts, --, --))
+>values : Symbol(Array.values, Decl(lib.es2015.iterable.d.ts, --, --))
+>map : Symbol(BuiltinIterator.map, Decl(lib.esnext.iterator.d.ts, --, --))
+>x : Symbol(x, Decl(builtinIterator.ts, 27, 44))
+>x : Symbol(x, Decl(builtinIterator.ts, 27, 44))
+
+
+class GoodIterator extends Iterator<number> {
+>GoodIterator : Symbol(GoodIterator, Decl(builtinIterator.ts, 27, 77))
+>Iterator : Symbol(Iterator, Decl(lib.es2015.iterable.d.ts, --, --), Decl(lib.esnext.iterator.d.ts, --, --))
+
+ next() {
+>next : Symbol(GoodIterator.next, Decl(builtinIterator.ts, 30, 45))
+
+ return { done: false, value: 0 } as const;
+>done : Symbol(done, Decl(builtinIterator.ts, 32, 12))
+>value : Symbol(value, Decl(builtinIterator.ts, 32, 25))
+>const : Symbol(const)
+ }
+}
+
+// error cases
+new Iterator<number>();
+>Iterator : Symbol(Iterator, Decl(lib.es2015.iterable.d.ts, --, --), Decl(lib.esnext.iterator.d.ts, --, --))
+
+class C extends Iterator<number> {}
+>C : Symbol(C, Decl(builtinIterator.ts, 37, 23))
+>Iterator : Symbol(Iterator, Decl(lib.es2015.iterable.d.ts, --, --), Decl(lib.esnext.iterator.d.ts, --, --))
+
+// it's unfortunate that these are an error
+class BadIterator1 extends Iterator<number> {
+>BadIterator1 : Symbol(BadIterator1, Decl(builtinIterator.ts, 39, 35))
+>Iterator : Symbol(Iterator, Decl(lib.es2015.iterable.d.ts, --, --), Decl(lib.esnext.iterator.d.ts, --, --))
+
+ next() {
+>next : Symbol(BadIterator1.next, Decl(builtinIterator.ts, 42, 45))
+
+ if (Math.random() < .5) {
+>Math.random : Symbol(Math.random, Decl(lib.es5.d.ts, --, --))
+>Math : Symbol(Math, Decl(lib.es5.d.ts, --, --), Decl(lib.es5.d.ts, --, --), Decl(lib.es2015.core.d.ts, --, --), Decl(lib.es2015.symbol.wellknown.d.ts, --, --))
+>random : Symbol(Math.random, Decl(lib.es5.d.ts, --, --))
+
+ return { done: false, value: 0 } as const;
+>done : Symbol(done, Decl(builtinIterator.ts, 45, 14))
+>value : Symbol(value, Decl(builtinIterator.ts, 45, 27))
+>const : Symbol(const)
+
+ } else {
+ return { done: true, value: "a string" } as const;
+>done : Symbol(done, Decl(builtinIterator.ts, 47, 14))
+>value : Symbol(value, Decl(builtinIterator.ts, 47, 26))
+>const : Symbol(const)
+ }
+ }
+}
+
+class BadIterator2 extends Iterator<number> {
+>BadIterator2 : Symbol(BadIterator2, Decl(builtinIterator.ts, 50, 1))
+>Iterator : Symbol(Iterator, Decl(lib.es2015.iterable.d.ts, --, --), Decl(lib.esnext.iterator.d.ts, --, --))
+
+ next() {
+>next : Symbol(BadIterator2.next, Decl(builtinIterator.ts, 52, 45))
+
+ return { done: false, value: 0 };
+>done : Symbol(done, Decl(builtinIterator.ts, 54, 12))
+>value : Symbol(value, Decl(builtinIterator.ts, 54, 25))
+ }
+}
+
+class BadIterator3 extends Iterator<number> {
+>BadIterator3 : Symbol(BadIterator3, Decl(builtinIterator.ts, 56, 1))
+>Iterator : Symbol(Iterator, Decl(lib.es2015.iterable.d.ts, --, --), Decl(lib.esnext.iterator.d.ts, --, --))
+
+ next() {
+>next : Symbol(BadIterator3.next, Decl(builtinIterator.ts, 58, 45))
+
+ if (Math.random() < .5) {
+>Math.random : Symbol(Math.random, Decl(lib.es5.d.ts, --, --))
+>Math : Symbol(Math, Decl(lib.es5.d.ts, --, --), Decl(lib.es5.d.ts, --, --), Decl(lib.es2015.core.d.ts, --, --), Decl(lib.es2015.symbol.wellknown.d.ts, --, --))
+>random : Symbol(Math.random, Decl(lib.es5.d.ts, --, --))
+
+ return { done: false, value: 0 };
+>done : Symbol(done, Decl(builtinIterator.ts, 61, 14))
+>value : Symbol(value, Decl(builtinIterator.ts, 61, 27))
+
+ } else {
+ return { done: true, value: "a string" };
+>done : Symbol(done, Decl(builtinIterator.ts, 63, 14))
+>value : Symbol(value, Decl(builtinIterator.ts, 63, 26))
+ }
+ }
+}
+
+declare const g1: Generator<string, number, boolean>;
+>g1 : Symbol(g1, Decl(builtinIterator.ts, 68, 13))
+>Generator : Symbol(Generator, Decl(lib.es2015.generator.d.ts, --, --))
+
+const iter1 = Iterator.from(g1);
+>iter1 : Symbol(iter1, Decl(builtinIterator.ts, 69, 5))
+>Iterator.from : Symbol(IteratorConstructor.from, Decl(lib.esnext.iterator.d.ts, --, --))
+>Iterator : Symbol(Iterator, Decl(lib.es2015.iterable.d.ts, --, --), Decl(lib.esnext.iterator.d.ts, --, --))
+>from : Symbol(IteratorConstructor.from, Decl(lib.esnext.iterator.d.ts, --, --))
+>g1 : Symbol(g1, Decl(builtinIterator.ts, 68, 13))
+
+declare const iter2: BuiltinIterator<string, BuiltinIteratorReturn>;
+>iter2 : Symbol(iter2, Decl(builtinIterator.ts, 71, 13))
+>BuiltinIterator : Symbol(BuiltinIterator, Decl(lib.es2015.iterable.d.ts, --, --), Decl(lib.esnext.iterator.d.ts, --, --))
+>BuiltinIteratorReturn : Symbol(BuiltinIteratorReturn, Decl(lib.es2015.iterable.d.ts, --, --))
+
+const iter3 = iter2.flatMap(() => g1);
+>iter3 : Symbol(iter3, Decl(builtinIterator.ts, 72, 5))
+>iter2.flatMap : Symbol(BuiltinIterator.flatMap, Decl(lib.esnext.iterator.d.ts, --, --))
+>iter2 : Symbol(iter2, Decl(builtinIterator.ts, 71, 13))
+>flatMap : Symbol(BuiltinIterator.flatMap, Decl(lib.esnext.iterator.d.ts, --, --))
+>g1 : Symbol(g1, Decl(builtinIterator.ts, 68, 13))
+
diff --git a/tests/baselines/reference/builtinIterator.types b/tests/baselines/reference/builtinIterator.types
new file mode 100644
index 0000000000000..7ee1560178e54
--- /dev/null
+++ b/tests/baselines/reference/builtinIterator.types
@@ -0,0 +1,428 @@
+//// [tests/cases/compiler/builtinIterator.ts] ////
+
+=== builtinIterator.ts ===
+const iterator = Iterator.from([0, 1, 2]);
+>iterator : BuiltinIterator<number, undefined, any>
+> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+>Iterator.from([0, 1, 2]) : BuiltinIterator<number, undefined, any>
+> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+>Iterator.from : <T>(value: Iterator<T, unknown, undefined> | Iterable<T, unknown, undefined>) => BuiltinIterator<T, undefined>
+> : ^ ^^ ^^ ^^^^^
+>Iterator : IteratorConstructor
+> : ^^^^^^^^^^^^^^^^^^^
+>from : <T>(value: Iterator<T, unknown, undefined> | Iterable<T, unknown, undefined>) => BuiltinIterator<T, undefined>
+> : ^ ^^ ^^ ^^^^^
+>[0, 1, 2] : number[]
+> : ^^^^^^^^
+>0 : 0
+> : ^
+>1 : 1
+> : ^
+>2 : 2
+> : ^
+
+const mapped = iterator.map(String);
+>mapped : BuiltinIterator<string, undefined, any>
+> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+>iterator.map(String) : BuiltinIterator<string, undefined, any>
+> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+>iterator.map : <U>(callbackfn: (value: number, index: number) => U) => BuiltinIterator<U, undefined, any>
+> : ^ ^^ ^^^ ^^^^^^^^^^ ^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+>iterator : BuiltinIterator<number, undefined, any>
+> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+>map : <U>(callbackfn: (value: number, index: number) => U) => BuiltinIterator<U, undefined, any>
+> : ^ ^^ ^^^ ^^^^^^^^^^ ^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+>String : StringConstructor
+> : ^^^^^^^^^^^^^^^^^
+
+const filtered = iterator.filter(x => x > 0);
+>filtered : BuiltinIterator<number, undefined, any>
+> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+>iterator.filter(x => x > 0) : BuiltinIterator<number, undefined, any>
+> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+>iterator.filter : { <S extends number>(predicate: (value: number, index: number) => value is S): BuiltinIterator<S, undefined, any>; (predicate: (value: number, index: number) => unknown): BuiltinIterator<number, undefined, any>; }
+> : ^^^ ^^^^^^^^^^^^^^^^^ ^^^ ^^^^^^^^^^ ^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^ ^^^^^^^^^^ ^^ ^^^^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+>iterator : BuiltinIterator<number, undefined, any>
+> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+>filter : { <S extends number>(predicate: (value: number, index: number) => value is S): BuiltinIterator<S, undefined, any>; (predicate: (value: number, index: number) => unknown): BuiltinIterator<number, undefined, any>; }
+> : ^^^ ^^^^^^^^^^^^^^^^^ ^^^ ^^^^^^^^^^ ^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^ ^^^^^^^^^^ ^^ ^^^^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+>x => x > 0 : (x: number) => boolean
+> : ^ ^^^^^^^^^^^^^^^^^^^^
+>x : number
+> : ^^^^^^
+>x > 0 : boolean
+> : ^^^^^^^
+>x : number
+> : ^^^^^^
+>0 : 0
+> : ^
+
+function isZero(x: number): x is 0 {
+>isZero : (x: number) => x is 0
+> : ^ ^^ ^^^^^
+>x : number
+> : ^^^^^^
+
+ return x === 0;
+>x === 0 : boolean
+> : ^^^^^^^
+>x : number
+> : ^^^^^^
+>0 : 0
+> : ^
+}
+const zero = iterator.filter(isZero);
+>zero : BuiltinIterator<0, undefined, any>
+> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+>iterator.filter(isZero) : BuiltinIterator<0, undefined, any>
+> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+>iterator.filter : { <S extends number>(predicate: (value: number, index: number) => value is S): BuiltinIterator<S, undefined, any>; (predicate: (value: number, index: number) => unknown): BuiltinIterator<number, undefined, any>; }
+> : ^^^ ^^^^^^^^^^^^^^^^^ ^^^ ^^^^^^^^^^ ^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^ ^^^^^^^^^^ ^^ ^^^^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+>iterator : BuiltinIterator<number, undefined, any>
+> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+>filter : { <S extends number>(predicate: (value: number, index: number) => value is S): BuiltinIterator<S, undefined, any>; (predicate: (value: number, index: number) => unknown): BuiltinIterator<number, undefined, any>; }
+> : ^^^ ^^^^^^^^^^^^^^^^^ ^^^ ^^^^^^^^^^ ^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^ ^^^^^^^^^^ ^^ ^^^^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+>isZero : (x: number) => x is 0
+> : ^ ^^ ^^^^^
+
+const iteratorFromBare = Iterator.from({
+>iteratorFromBare : BuiltinIterator<string, undefined, any>
+> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+>Iterator.from({ next() { return { done: Math.random() < .5, value: "a string", }; },}) : BuiltinIterator<string, undefined, any>
+> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+>Iterator.from : <T>(value: Iterator<T, unknown, undefined> | Iterable<T, unknown, undefined>) => BuiltinIterator<T, undefined>
+> : ^ ^^ ^^ ^^^^^
+>Iterator : IteratorConstructor
+> : ^^^^^^^^^^^^^^^^^^^
+>from : <T>(value: Iterator<T, unknown, undefined> | Iterable<T, unknown, undefined>) => BuiltinIterator<T, undefined>
+> : ^ ^^ ^^ ^^^^^
+>{ next() { return { done: Math.random() < .5, value: "a string", }; },} : { next(): { done: boolean; value: string; }; }
+> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+ next() {
+>next : () => { done: boolean; value: string; }
+> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+ return {
+>{ done: Math.random() < .5, value: "a string", } : { done: boolean; value: string; }
+> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+ done: Math.random() < .5,
+>done : boolean
+> : ^^^^^^^
+>Math.random() < .5 : boolean
+> : ^^^^^^^
+>Math.random() : number
+> : ^^^^^^
+>Math.random : () => number
+> : ^^^^^^
+>Math : Math
+> : ^^^^
+>random : () => number
+> : ^^^^^^
+>.5 : 0.5
+> : ^^^
+
+ value: "a string",
+>value : string
+> : ^^^^^^
+>"a string" : "a string"
+> : ^^^^^^^^^^
+
+ };
+ },
+});
+
+
+function* gen() {
+>gen : () => Generator<number, void, unknown>
+> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+ yield 0;
+>yield 0 : any
+> : ^^^
+>0 : 0
+> : ^
+}
+
+const mappedGen = gen().map(x => x === 0 ? "zero" : "other");
+>mappedGen : BuiltinIterator<"zero" | "other", undefined, any>
+> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+>gen().map(x => x === 0 ? "zero" : "other") : BuiltinIterator<"zero" | "other", undefined, any>
+> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+>gen().map : <U>(callbackfn: (value: number, index: number) => U) => BuiltinIterator<U, undefined, any>
+> : ^ ^^ ^^^ ^^^^^^^^^^ ^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+>gen() : Generator<number, void, unknown>
+> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+>gen : () => Generator<number, void, unknown>
+> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+>map : <U>(callbackfn: (value: number, index: number) => U) => BuiltinIterator<U, undefined, any>
+> : ^ ^^ ^^^ ^^^^^^^^^^ ^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+>x => x === 0 ? "zero" : "other" : (x: number) => "zero" | "other"
+> : ^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+>x : number
+> : ^^^^^^
+>x === 0 ? "zero" : "other" : "zero" | "other"
+> : ^^^^^^^^^^^^^^^^
+>x === 0 : boolean
+> : ^^^^^^^
+>x : number
+> : ^^^^^^
+>0 : 0
+> : ^
+>"zero" : "zero"
+> : ^^^^^^
+>"other" : "other"
+> : ^^^^^^^
+
+const mappedValues = [0, 1, 2].values().map(x => x === 0 ? "zero" : "other");
+>mappedValues : BuiltinIterator<"zero" | "other", undefined, any>
+> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+>[0, 1, 2].values().map(x => x === 0 ? "zero" : "other") : BuiltinIterator<"zero" | "other", undefined, any>
+> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+>[0, 1, 2].values().map : <U>(callbackfn: (value: number, index: number) => U) => BuiltinIterator<U, undefined, any>
+> : ^ ^^ ^^^ ^^^^^^^^^^ ^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+>[0, 1, 2].values() : BuiltinIterator<number, undefined, any>
+> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+>[0, 1, 2].values : () => BuiltinIterator<number, undefined, any>
+> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+>[0, 1, 2] : number[]
+> : ^^^^^^^^
+>0 : 0
+> : ^
+>1 : 1
+> : ^
+>2 : 2
+> : ^
+>values : () => BuiltinIterator<number, undefined, any>
+> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+>map : <U>(callbackfn: (value: number, index: number) => U) => BuiltinIterator<U, undefined, any>
+> : ^ ^^ ^^^ ^^^^^^^^^^ ^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+>x => x === 0 ? "zero" : "other" : (x: number) => "zero" | "other"
+> : ^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+>x : number
+> : ^^^^^^
+>x === 0 ? "zero" : "other" : "zero" | "other"
+> : ^^^^^^^^^^^^^^^^
+>x === 0 : boolean
+> : ^^^^^^^
+>x : number
+> : ^^^^^^
+>0 : 0
+> : ^
+>"zero" : "zero"
+> : ^^^^^^
+>"other" : "other"
+> : ^^^^^^^
+
+
+class GoodIterator extends Iterator<number> {
+>GoodIterator : GoodIterator
+> : ^^^^^^^^^^^^
+>Iterator : Iterator<number>
+> : ^^^^^^^^^^^^^^^^
+
+ next() {
+>next : () => { readonly done: false; readonly value: 0; }
+> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+ return { done: false, value: 0 } as const;
+>{ done: false, value: 0 } as const : { readonly done: false; readonly value: 0; }
+> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+>{ done: false, value: 0 } : { readonly done: false; readonly value: 0; }
+> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+>done : false
+> : ^^^^^
+>false : false
+> : ^^^^^
+>value : 0
+> : ^
+>0 : 0
+> : ^
+ }
+}
+
+// error cases
+new Iterator<number>();
+>new Iterator<number>() : any
+> : ^^^
+>Iterator : IteratorConstructor
+> : ^^^^^^^^^^^^^^^^^^^
+
+class C extends Iterator<number> {}
+>C : C
+> : ^
+>Iterator : Iterator<number>
+> : ^^^^^^^^^^^^^^^^
+
+// it's unfortunate that these are an error
+class BadIterator1 extends Iterator<number> {
+>BadIterator1 : BadIterator1
+> : ^^^^^^^^^^^^
+>Iterator : Iterator<number>
+> : ^^^^^^^^^^^^^^^^
+
+ next() {
+>next : () => { readonly done: false; readonly value: 0; } | { readonly done: true; readonly value: "a string"; }
+> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+ if (Math.random() < .5) {
+>Math.random() < .5 : boolean
+> : ^^^^^^^
+>Math.random() : number
+> : ^^^^^^
+>Math.random : () => number
+> : ^^^^^^
+>Math : Math
+> : ^^^^
+>random : () => number
+> : ^^^^^^
+>.5 : 0.5
+> : ^^^
+
+ return { done: false, value: 0 } as const;
+>{ done: false, value: 0 } as const : { readonly done: false; readonly value: 0; }
+> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+>{ done: false, value: 0 } : { readonly done: false; readonly value: 0; }
+> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+>done : false
+> : ^^^^^
+>false : false
+> : ^^^^^
+>value : 0
+> : ^
+>0 : 0
+> : ^
+
+ } else {
+ return { done: true, value: "a string" } as const;
+>{ done: true, value: "a string" } as const : { readonly done: true; readonly value: "a string"; }
+> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+>{ done: true, value: "a string" } : { readonly done: true; readonly value: "a string"; }
+> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+>done : true
+> : ^^^^
+>true : true
+> : ^^^^
+>value : "a string"
+> : ^^^^^^^^^^
+>"a string" : "a string"
+> : ^^^^^^^^^^
+ }
+ }
+}
+
+class BadIterator2 extends Iterator<number> {
+>BadIterator2 : BadIterator2
+> : ^^^^^^^^^^^^
+>Iterator : Iterator<number>
+> : ^^^^^^^^^^^^^^^^
+
+ next() {
+>next : () => { done: boolean; value: number; }
+> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+ return { done: false, value: 0 };
+>{ done: false, value: 0 } : { done: boolean; value: number; }
+> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+>done : boolean
+> : ^^^^^^^
+>false : false
+> : ^^^^^
+>value : number
+> : ^^^^^^
+>0 : 0
+> : ^
+ }
+}
+
+class BadIterator3 extends Iterator<number> {
+>BadIterator3 : BadIterator3
+> : ^^^^^^^^^^^^
+>Iterator : Iterator<number>
+> : ^^^^^^^^^^^^^^^^
+
+ next() {
+>next : () => { done: boolean; value: number; } | { done: boolean; value: string; }
+> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+ if (Math.random() < .5) {
+>Math.random() < .5 : boolean
+> : ^^^^^^^
+>Math.random() : number
+> : ^^^^^^
+>Math.random : () => number
+> : ^^^^^^
+>Math : Math
+> : ^^^^
+>random : () => number
+> : ^^^^^^
+>.5 : 0.5
+> : ^^^
+
+ return { done: false, value: 0 };
+>{ done: false, value: 0 } : { done: boolean; value: number; }
+> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+>done : boolean
+> : ^^^^^^^
+>false : false
+> : ^^^^^
+>value : number
+> : ^^^^^^
+>0 : 0
+> : ^
+
+ } else {
+ return { done: true, value: "a string" };
+>{ done: true, value: "a string" } : { done: boolean; value: string; }
+> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+>done : boolean
+> : ^^^^^^^
+>true : true
+> : ^^^^
+>value : string
+> : ^^^^^^
+>"a string" : "a string"
+> : ^^^^^^^^^^
+ }
+ }
+}
+
+declare const g1: Generator<string, number, boolean>;
+>g1 : Generator<string, number, boolean>
+> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+const iter1 = Iterator.from(g1);
+>iter1 : BuiltinIterator<string, undefined, any>
+> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+>Iterator.from(g1) : BuiltinIterator<string, undefined, any>
+> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+>Iterator.from : <T>(value: Iterator<T, unknown, undefined> | Iterable<T, unknown, undefined>) => BuiltinIterator<T, undefined>
+> : ^ ^^ ^^ ^^^^^
+>Iterator : IteratorConstructor
+> : ^^^^^^^^^^^^^^^^^^^
+>from : <T>(value: Iterator<T, unknown, undefined> | Iterable<T, unknown, undefined>) => BuiltinIterator<T, undefined>
+> : ^ ^^ ^^ ^^^^^
+>g1 : Generator<string, number, boolean>
+> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+declare const iter2: BuiltinIterator<string, BuiltinIteratorReturn>;
+>iter2 : BuiltinIterator<string, undefined, any>
+> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+const iter3 = iter2.flatMap(() => g1);
+>iter3 : BuiltinIterator<string, undefined, any>
+> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+>iter2.flatMap(() => g1) : BuiltinIterator<string, undefined, any>
+> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+>iter2.flatMap : <U>(callback: (value: string, index: number) => Iterator<U, unknown, undefined> | Iterable<U, unknown, undefined>) => BuiltinIterator<U, undefined, any>
+> : ^ ^^ ^^^ ^^^^^^^^^^ ^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+>iter2 : BuiltinIterator<string, undefined, any>
+> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+>flatMap : <U>(callback: (value: string, index: number) => Iterator<U, unknown, undefined> | Iterable<U, unknown, undefined>) => BuiltinIterator<U, undefined, any>
+> : ^ ^^ ^^^ ^^^^^^^^^^ ^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+>() => g1 : () => Generator<string, number, boolean>
+> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+>g1 : Generator<string, number, boolean>
+> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
diff --git a/tests/baselines/reference/builtinIteratorReturn(strictbuiltiniteratorreturn=false).types b/tests/baselines/reference/builtinIteratorReturn(strictbuiltiniteratorreturn=false).types
index 914c702b1317f..3ed7928926650 100644
--- a/tests/baselines/reference/builtinIteratorReturn(strictbuiltiniteratorreturn=false).types
+++ b/tests/baselines/reference/builtinIteratorReturn(strictbuiltiniteratorreturn=false).types
@@ -14,12 +14,12 @@ declare const set: Set<number>;
> : ^^^^^^^^^^^
const i0 = array[Symbol.iterator]();
->i0 : IterableIterator<number>
-> : ^^^^^^^^^^^^^^^^^^^^^^^^
->array[Symbol.iterator]() : IterableIterator<number>
-> : ^^^^^^^^^^^^^^^^^^^^^^^^
->array[Symbol.iterator] : () => IterableIterator<number>
-> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+>i0 : BuiltinIterator<number, any, any>
+> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+>array[Symbol.iterator]() : BuiltinIterator<number, any, any>
+> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+>array[Symbol.iterator] : () => BuiltinIterator<number, any, any>
+> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
>array : number[]
> : ^^^^^^^^
>Symbol.iterator : unique symbol
@@ -30,40 +30,40 @@ const i0 = array[Symbol.iterator]();
> : ^^^^^^^^^^^^^
const i1 = array.values();
->i1 : IterableIterator<number>
-> : ^^^^^^^^^^^^^^^^^^^^^^^^
->array.values() : IterableIterator<number>
-> : ^^^^^^^^^^^^^^^^^^^^^^^^
->array.values : () => IterableIterator<number>
-> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+>i1 : BuiltinIterator<number, any, any>
+> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+>array.values() : BuiltinIterator<number, any, any>
+> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+>array.values : () => BuiltinIterator<number, any, any>
+> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
>array : number[]
> : ^^^^^^^^
->values : () => IterableIterator<number>
-> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+>values : () => BuiltinIterator<number, any, any>
+> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
const i2 = array.keys();
->i2 : IterableIterator<number>
-> : ^^^^^^^^^^^^^^^^^^^^^^^^
->array.keys() : IterableIterator<number>
-> : ^^^^^^^^^^^^^^^^^^^^^^^^
->array.keys : () => IterableIterator<number, BuiltinIteratorReturn>
-> : ^^^^^^
+>i2 : BuiltinIterator<number, any, any>
+> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+>array.keys() : BuiltinIterator<number, any, any>
+> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+>array.keys : () => BuiltinIterator<number, BuiltinIteratorReturn>
+> : ^^^^^^
>array : number[]
> : ^^^^^^^^
->keys : () => IterableIterator<number, BuiltinIteratorReturn>
-> : ^^^^^^
+>keys : () => BuiltinIterator<number, BuiltinIteratorReturn>
+> : ^^^^^^
const i3 = array.entries();
->i3 : IterableIterator<[number, number]>
-> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
->array.entries() : IterableIterator<[number, number]>
-> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
->array.entries : () => IterableIterator<[number, number]>
-> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+>i3 : BuiltinIterator<[number, number], any, any>
+> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+>array.entries() : BuiltinIterator<[number, number], any, any>
+> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+>array.entries : () => BuiltinIterator<[number, number], any, any>
+> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
>array : number[]
> : ^^^^^^^^
->entries : () => IterableIterator<[number, number]>
-> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+>entries : () => BuiltinIterator<[number, number], any, any>
+> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
for (const x of array);
>x : number
@@ -72,12 +72,12 @@ for (const x of array);
> : ^^^^^^^^
const i4 = map[Symbol.iterator]();
->i4 : IterableIterator<[string, number]>
-> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
->map[Symbol.iterator]() : IterableIterator<[string, number]>
-> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
->map[Symbol.iterator] : () => IterableIterator<[string, number]>
-> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+>i4 : BuiltinIterator<[string, number], any, any>
+> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+>map[Symbol.iterator]() : BuiltinIterator<[string, number], any, any>
+> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+>map[Symbol.iterator] : () => BuiltinIterator<[string, number], any, any>
+> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
>map : Map<string, number>
> : ^^^^^^^^^^^^^^^^^^^
>Symbol.iterator : unique symbol
@@ -88,40 +88,40 @@ const i4 = map[Symbol.iterator]();
> : ^^^^^^^^^^^^^
const i5 = map.values();
->i5 : IterableIterator<number>
-> : ^^^^^^^^^^^^^^^^^^^^^^^^
->map.values() : IterableIterator<number>
-> : ^^^^^^^^^^^^^^^^^^^^^^^^
->map.values : () => IterableIterator<number>
-> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+>i5 : BuiltinIterator<number, any, any>
+> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+>map.values() : BuiltinIterator<number, any, any>
+> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+>map.values : () => BuiltinIterator<number, any, any>
+> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
>map : Map<string, number>
> : ^^^^^^^^^^^^^^^^^^^
->values : () => IterableIterator<number>
-> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+>values : () => BuiltinIterator<number, any, any>
+> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
const i6 = map.keys();
->i6 : IterableIterator<string>
-> : ^^^^^^^^^^^^^^^^^^^^^^^^
->map.keys() : IterableIterator<string>
-> : ^^^^^^^^^^^^^^^^^^^^^^^^
->map.keys : () => IterableIterator<string>
-> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+>i6 : BuiltinIterator<string, any, any>
+> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+>map.keys() : BuiltinIterator<string, any, any>
+> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+>map.keys : () => BuiltinIterator<string, any, any>
+> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
>map : Map<string, number>
> : ^^^^^^^^^^^^^^^^^^^
->keys : () => IterableIterator<string>
-> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+>keys : () => BuiltinIterator<string, any, any>
+> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
const i7 = map.entries();
->i7 : IterableIterator<[string, number]>
-> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
->map.entries() : IterableIterator<[string, number]>
-> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
->map.entries : () => IterableIterator<[string, number]>
-> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+>i7 : BuiltinIterator<[string, number], any, any>
+> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+>map.entries() : BuiltinIterator<[string, number], any, any>
+> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+>map.entries : () => BuiltinIterator<[string, number], any, any>
+> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
>map : Map<string, number>
> : ^^^^^^^^^^^^^^^^^^^
->entries : () => IterableIterator<[string, number]>
-> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+>entries : () => BuiltinIterator<[string, number], any, any>
+> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
for (const x of map);
>x : [string, number]
@@ -130,12 +130,12 @@ for (const x of map);
> : ^^^^^^^^^^^^^^^^^^^
const i8 = set[Symbol.iterator]();
->i8 : IterableIterator<number>
-> : ^^^^^^^^^^^^^^^^^^^^^^^^
->set[Symbol.iterator]() : IterableIterator<number>
-> : ^^^^^^^^^^^^^^^^^^^^^^^^
->set[Symbol.iterator] : () => IterableIterator<number>
-> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+>i8 : BuiltinIterator<number, any, any>
+> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+>set[Symbol.iterator]() : BuiltinIterator<number, any, any>
+> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+>set[Symbol.iterator] : () => BuiltinIterator<number, any, any>
+> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
>set : Set<number>
> : ^^^^^^^^^^^
>Symbol.iterator : unique symbol
@@ -146,40 +146,40 @@ const i8 = set[Symbol.iterator]();
> : ^^^^^^^^^^^^^
const i9 = set.values();
->i9 : IterableIterator<number>
-> : ^^^^^^^^^^^^^^^^^^^^^^^^
->set.values() : IterableIterator<number>
-> : ^^^^^^^^^^^^^^^^^^^^^^^^
->set.values : () => IterableIterator<number>
-> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+>i9 : BuiltinIterator<number, any, any>
+> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+>set.values() : BuiltinIterator<number, any, any>
+> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+>set.values : () => BuiltinIterator<number, any, any>
+> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
>set : Set<number>
> : ^^^^^^^^^^^
->values : () => IterableIterator<number>
-> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+>values : () => BuiltinIterator<number, any, any>
+> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
const i10 = set.keys();
->i10 : IterableIterator<number>
-> : ^^^^^^^^^^^^^^^^^^^^^^^^
->set.keys() : IterableIterator<number>
-> : ^^^^^^^^^^^^^^^^^^^^^^^^
->set.keys : () => IterableIterator<number>
-> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+>i10 : BuiltinIterator<number, any, any>
+> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+>set.keys() : BuiltinIterator<number, any, any>
+> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+>set.keys : () => BuiltinIterator<number, any, any>
+> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
>set : Set<number>
> : ^^^^^^^^^^^
->keys : () => IterableIterator<number>
-> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+>keys : () => BuiltinIterator<number, any, any>
+> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
const i11 = set.entries();
->i11 : IterableIterator<[number, number]>
-> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
->set.entries() : IterableIterator<[number, number]>
-> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
->set.entries : () => IterableIterator<[number, number]>
-> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+>i11 : BuiltinIterator<[number, number], any, any>
+> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+>set.entries() : BuiltinIterator<[number, number], any, any>
+> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+>set.entries : () => BuiltinIterator<[number, number], any, any>
+> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
>set : Set<number>
> : ^^^^^^^^^^^
->entries : () => IterableIterator<[number, number]>
-> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+>entries : () => BuiltinIterator<[number, number], any, any>
+> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
for (const x of set);
>x : number
diff --git a/tests/baselines/reference/builtinIteratorReturn(strictbuiltiniteratorreturn=true).types b/tests/baselines/reference/builtinIteratorReturn(strictbuiltiniteratorreturn=true).types
index f0ffe8c1d63c6..4a4d461d4a71f 100644
--- a/tests/baselines/reference/builtinIteratorReturn(strictbuiltiniteratorreturn=true).types
+++ b/tests/baselines/reference/builtinIteratorReturn(strictbuiltiniteratorreturn=true).types
@@ -14,12 +14,12 @@ declare const set: Set<number>;
> : ^^^^^^^^^^^
const i0 = array[Symbol.iterator]();
->i0 : IterableIterator<number, undefined>
-> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
->array[Symbol.iterator]() : IterableIterator<number, undefined>
-> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
->array[Symbol.iterator] : () => IterableIterator<number, undefined>
-> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+>i0 : BuiltinIterator<number, undefined, any>
+> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+>array[Symbol.iterator]() : BuiltinIterator<number, undefined, any>
+> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+>array[Symbol.iterator] : () => BuiltinIterator<number, undefined, any>
+> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
>array : number[]
> : ^^^^^^^^
>Symbol.iterator : unique symbol
@@ -30,40 +30,40 @@ const i0 = array[Symbol.iterator]();
> : ^^^^^^^^^^^^^
const i1 = array.values();
->i1 : IterableIterator<number, undefined>
-> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
->array.values() : IterableIterator<number, undefined>
-> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
->array.values : () => IterableIterator<number, undefined>
-> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+>i1 : BuiltinIterator<number, undefined, any>
+> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+>array.values() : BuiltinIterator<number, undefined, any>
+> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+>array.values : () => BuiltinIterator<number, undefined, any>
+> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
>array : number[]
> : ^^^^^^^^
->values : () => IterableIterator<number, undefined>
-> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+>values : () => BuiltinIterator<number, undefined, any>
+> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
const i2 = array.keys();
->i2 : IterableIterator<number, undefined>
-> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
->array.keys() : IterableIterator<number, undefined>
-> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
->array.keys : () => IterableIterator<number, BuiltinIteratorReturn>
-> : ^^^^^^
+>i2 : BuiltinIterator<number, undefined, any>
+> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+>array.keys() : BuiltinIterator<number, undefined, any>
+> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+>array.keys : () => BuiltinIterator<number, BuiltinIteratorReturn>
+> : ^^^^^^
>array : number[]
> : ^^^^^^^^
->keys : () => IterableIterator<number, BuiltinIteratorReturn>
-> : ^^^^^^
+>keys : () => BuiltinIterator<number, BuiltinIteratorReturn>
+> : ^^^^^^
const i3 = array.entries();
->i3 : IterableIterator<[number, number], undefined>
-> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
->array.entries() : IterableIterator<[number, number], undefined>
-> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
->array.entries : () => IterableIterator<[number, number], undefined>
-> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+>i3 : BuiltinIterator<[number, number], undefined, any>
+> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+>array.entries() : BuiltinIterator<[number, number], undefined, any>
+> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+>array.entries : () => BuiltinIterator<[number, number], undefined, any>
+> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
>array : number[]
> : ^^^^^^^^
->entries : () => IterableIterator<[number, number], undefined>
-> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+>entries : () => BuiltinIterator<[number, number], undefined, any>
+> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
for (const x of array);
>x : number
@@ -72,12 +72,12 @@ for (const x of array);
> : ^^^^^^^^
const i4 = map[Symbol.iterator]();
->i4 : IterableIterator<[string, number], undefined>
-> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
->map[Symbol.iterator]() : IterableIterator<[string, number], undefined>
-> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
->map[Symbol.iterator] : () => IterableIterator<[string, number], undefined>
-> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+>i4 : BuiltinIterator<[string, number], undefined, any>
+> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+>map[Symbol.iterator]() : BuiltinIterator<[string, number], undefined, any>
+> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+>map[Symbol.iterator] : () => BuiltinIterator<[string, number], undefined, any>
+> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
>map : Map<string, number>
> : ^^^^^^^^^^^^^^^^^^^
>Symbol.iterator : unique symbol
@@ -88,40 +88,40 @@ const i4 = map[Symbol.iterator]();
> : ^^^^^^^^^^^^^
const i5 = map.values();
->i5 : IterableIterator<number, undefined>
-> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
->map.values() : IterableIterator<number, undefined>
-> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
->map.values : () => IterableIterator<number, undefined>
-> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+>i5 : BuiltinIterator<number, undefined, any>
+> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+>map.values() : BuiltinIterator<number, undefined, any>
+> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+>map.values : () => BuiltinIterator<number, undefined, any>
+> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
>map : Map<string, number>
> : ^^^^^^^^^^^^^^^^^^^
->values : () => IterableIterator<number, undefined>
-> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+>values : () => BuiltinIterator<number, undefined, any>
+> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
const i6 = map.keys();
->i6 : IterableIterator<string, undefined>
-> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
->map.keys() : IterableIterator<string, undefined>
-> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
->map.keys : () => IterableIterator<string, undefined>
-> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+>i6 : BuiltinIterator<string, undefined, any>
+> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+>map.keys() : BuiltinIterator<string, undefined, any>
+> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+>map.keys : () => BuiltinIterator<string, undefined, any>
+> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
>map : Map<string, number>
> : ^^^^^^^^^^^^^^^^^^^
->keys : () => IterableIterator<string, undefined>
-> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+>keys : () => BuiltinIterator<string, undefined, any>
+> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
const i7 = map.entries();
->i7 : IterableIterator<[string, number], undefined>
-> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
->map.entries() : IterableIterator<[string, number], undefined>
-> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
->map.entries : () => IterableIterator<[string, number], undefined>
-> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+>i7 : BuiltinIterator<[string, number], undefined, any>
+> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+>map.entries() : BuiltinIterator<[string, number], undefined, any>
+> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+>map.entries : () => BuiltinIterator<[string, number], undefined, any>
+> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
>map : Map<string, number>
> : ^^^^^^^^^^^^^^^^^^^
->entries : () => IterableIterator<[string, number], undefined>
-> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+>entries : () => BuiltinIterator<[string, number], undefined, any>
+> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
for (const x of map);
>x : [string, number]
@@ -130,12 +130,12 @@ for (const x of map);
> : ^^^^^^^^^^^^^^^^^^^
const i8 = set[Symbol.iterator]();
->i8 : IterableIterator<number, undefined>
-> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
->set[Symbol.iterator]() : IterableIterator<number, undefined>
-> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
->set[Symbol.iterator] : () => IterableIterator<number, undefined>
-> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+>i8 : BuiltinIterator<number, undefined, any>
+> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+>set[Symbol.iterator]() : BuiltinIterator<number, undefined, any>
+> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+>set[Symbol.iterator] : () => BuiltinIterator<number, undefined, any>
+> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
>set : Set<number>
> : ^^^^^^^^^^^
>Symbol.iterator : unique symbol
@@ -146,40 +146,40 @@ const i8 = set[Symbol.iterator]();
> : ^^^^^^^^^^^^^
const i9 = set.values();
->i9 : IterableIterator<number, undefined>
-> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
->set.values() : IterableIterator<number, undefined>
-> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
->set.values : () => IterableIterator<number, undefined>
-> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+>i9 : BuiltinIterator<number, undefined, any>
+> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+>set.values() : BuiltinIterator<number, undefined, any>
+> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+>set.values : () => BuiltinIterator<number, undefined, any>
+> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
>set : Set<number>
> : ^^^^^^^^^^^
->values : () => IterableIterator<number, undefined>
-> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+>values : () => BuiltinIterator<number, undefined, any>
+> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
const i10 = set.keys();
->i10 : IterableIterator<number, undefined>
-> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
->set.keys() : IterableIterator<number, undefined>
-> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
->set.keys : () => IterableIterator<number, undefined>
-> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+>i10 : BuiltinIterator<number, undefined, any>
+> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+>set.keys() : BuiltinIterator<number, undefined, any>
+> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+>set.keys : () => BuiltinIterator<number, undefined, any>
+> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
>set : Set<number>
> : ^^^^^^^^^^^
->keys : () => IterableIterator<number, undefined>
-> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+>keys : () => BuiltinIterator<number, undefined, any>
+> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
const i11 = set.entries();
->i11 : IterableIterator<[number, number], undefined>
-> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
->set.entries() : IterableIterator<[number, number], undefined>
-> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
->set.entries : () => IterableIterator<[number, number], undefined>
-> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+>i11 : BuiltinIterator<[number, number], undefined, any>
+> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+>set.entries() : BuiltinIterator<[number, number], undefined, any>
+> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+>set.entries : () => BuiltinIterator<[number, number], undefined, any>
+> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
>set : Set<number>
> : ^^^^^^^^^^^
->entries : () => IterableIterator<[number, number], undefined>
-> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+>entries : () => BuiltinIterator<[number, number], undefined, any>
+> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
for (const x of set);
>x : number
diff --git a/tests/baselines/reference/bundlerDirectoryModule(moduleresolution=bundler).trace.json b/tests/baselines/reference/bundlerDirectoryModule(moduleresolution=bundler).trace.json
index 8934226b9c5a7..411dbddcecb09 100644
--- a/tests/baselines/reference/bundlerDirectoryModule(moduleresolution=bundler).trace.json
+++ b/tests/baselines/reference/bundlerDirectoryModule(moduleresolution=bundler).trace.json
@@ -941,6 +941,19 @@
"Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
"Directory '/node_modules' does not exist, skipping all lookups in it.",
"======== Module name '@typescript/lib-esnext/string' was not resolved. ========",
+ "======== Resolving module '@typescript/lib-esnext/iterator' from '/.src/__lib_node_modules_lookup_lib.esnext.iterator.d.ts__.ts'. ========",
+ "Explicitly specified module resolution kind: 'Node10'.",
+ "Loading module '@typescript/lib-esnext/iterator' from 'node_modules' folder, target file types: TypeScript, Declaration.",
+ "Searching all ancestor node_modules directories for preferred extensions: TypeScript, Declaration.",
+ "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
+ "Scoped package detected, looking in 'typescript__lib-esnext/iterator'",
+ "Directory '/node_modules' does not exist, skipping all lookups in it.",
+ "Scoped package detected, looking in 'typescript__lib-esnext/iterator'",
+ "Loading module '@typescript/lib-esnext/iterator' from 'node_modules' folder, target file types: JavaScript.",
+ "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
+ "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
+ "Directory '/node_modules' does not exist, skipping all lookups in it.",
+ "======== Module name '@typescript/lib-esnext/iterator' was not resolved. ========",
"======== Resolving module '@typescript/lib-dom' from '/.src/__lib_node_modules_lookup_lib.dom.d.ts__.ts'. ========",
"Explicitly specified module resolution kind: 'Node10'.",
"Loading module '@typescript/lib-dom' from 'node_modules' folder, target file types: TypeScript, Declaration.",
diff --git a/tests/baselines/reference/bundlerDirectoryModule(moduleresolution=nodenext).trace.json b/tests/baselines/reference/bundlerDirectoryModule(moduleresolution=nodenext).trace.json
index 1f3f12c611252..512fe8819a39a 100644
--- a/tests/baselines/reference/bundlerDirectoryModule(moduleresolution=nodenext).trace.json
+++ b/tests/baselines/reference/bundlerDirectoryModule(moduleresolution=nodenext).trace.json
@@ -1089,6 +1089,21 @@
"======== Module name '@typescript/lib-esnext/string' was not resolved. ========",
"File '/.ts/package.json' does not exist according to earlier cached lookups.",
"File '/package.json' does not exist according to earlier cached lookups.",
+ "======== Resolving module '@typescript/lib-esnext/iterator' from '/.src/__lib_node_modules_lookup_lib.esnext.iterator.d.ts__.ts'. ========",
+ "Explicitly specified module resolution kind: 'Node10'.",
+ "Loading module '@typescript/lib-esnext/iterator' from 'node_modules' folder, target file types: TypeScript, Declaration.",
+ "Searching all ancestor node_modules directories for preferred extensions: TypeScript, Declaration.",
+ "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
+ "Scoped package detected, looking in 'typescript__lib-esnext/iterator'",
+ "Directory '/node_modules' does not exist, skipping all lookups in it.",
+ "Scoped package detected, looking in 'typescript__lib-esnext/iterator'",
+ "Loading module '@typescript/lib-esnext/iterator' from 'node_modules' folder, target file types: JavaScript.",
+ "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
+ "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
+ "Directory '/node_modules' does not exist, skipping all lookups in it.",
+ "======== Module name '@typescript/lib-esnext/iterator' was not resolved. ========",
+ "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+ "File '/package.json' does not exist according to earlier cached lookups.",
"======== Resolving module '@typescript/lib-dom' from '/.src/__lib_node_modules_lookup_lib.dom.d.ts__.ts'. ========",
"Explicitly specified module resolution kind: 'Node10'.",
"Loading module '@typescript/lib-dom' from 'node_modules' folder, target file types: TypeScript, Declaration.",
diff --git a/tests/baselines/reference/config/commandLineParsing/parseCommandLine/Parse --lib option with extra comma.js b/tests/baselines/reference/config/commandLineParsing/parseCommandLine/Parse --lib option with extra comma.js
index 44a56c66ec5b6..cfcd52b395baf 100644
--- a/tests/baselines/reference/config/commandLineParsing/parseCommandLine/Parse --lib option with extra comma.js
+++ b/tests/baselines/reference/config/commandLineParsing/parseCommandLine/Parse --lib option with extra comma.js
@@ -10,4 +10,4 @@ WatchOptions::
FileNames::
es7,0.ts
Errors::
-error TS6046: Argument for '--lib' option must be: 'es5', 'es6', 'es2015', 'es7', 'es2016', 'es2017', 'es2018', 'es2019', 'es2020', 'es2021', 'es2022', 'es2023', 'esnext', 'dom', 'dom.iterable', 'dom.asynciterable', 'webworker', 'webworker.importscripts', 'webworker.iterable', 'webworker.asynciterable', 'scripthost', 'es2015.core', 'es2015.collection', 'es2015.generator', 'es2015.iterable', 'es2015.promise', 'es2015.proxy', 'es2015.reflect', 'es2015.symbol', 'es2015.symbol.wellknown', 'es2016.array.include', 'es2016.intl', 'es2017.date', 'es2017.object', 'es2017.sharedmemory', 'es2017.string', 'es2017.intl', 'es2017.typedarrays', 'es2018.asyncgenerator', 'es2018.asynciterable', 'es2018.intl', 'es2018.promise', 'es2018.regexp', 'es2019.array', 'es2019.object', 'es2019.string', 'es2019.symbol', 'es2019.intl', 'es2020.bigint', 'es2020.date', 'es2020.promise', 'es2020.sharedmemory', 'es2020.string', 'es2020.symbol.wellknown', 'es2020.intl', 'es2020.number', 'es2021.promise', 'es2021.string', 'es2021.weakref', 'es2021.intl', 'es2022.array', 'es2022.error', 'es2022.intl', 'es2022.object', 'es2022.sharedmemory', 'es2022.string', 'es2022.regexp', 'es2023.array', 'es2023.collection', 'es2023.intl', 'esnext.array', 'esnext.collection', 'esnext.symbol', 'esnext.asynciterable', 'esnext.intl', 'esnext.disposable', 'esnext.bigint', 'esnext.string', 'esnext.promise', 'esnext.weakref', 'esnext.decorators', 'esnext.object', 'esnext.regexp', 'decorators', 'decorators.legacy'.
+error TS6046: Argument for '--lib' option must be: 'es5', 'es6', 'es2015', 'es7', 'es2016', 'es2017', 'es2018', 'es2019', 'es2020', 'es2021', 'es2022', 'es2023', 'esnext', 'dom', 'dom.iterable', 'dom.asynciterable', 'webworker', 'webworker.importscripts', 'webworker.iterable', 'webworker.asynciterable', 'scripthost', 'es2015.core', 'es2015.collection', 'es2015.generator', 'es2015.iterable', 'es2015.promise', 'es2015.proxy', 'es2015.reflect', 'es2015.symbol', 'es2015.symbol.wellknown', 'es2016.array.include', 'es2016.intl', 'es2017.date', 'es2017.object', 'es2017.sharedmemory', 'es2017.string', 'es2017.intl', 'es2017.typedarrays', 'es2018.asyncgenerator', 'es2018.asynciterable', 'es2018.intl', 'es2018.promise', 'es2018.regexp', 'es2019.array', 'es2019.object', 'es2019.string', 'es2019.symbol', 'es2019.intl', 'es2020.bigint', 'es2020.date', 'es2020.promise', 'es2020.sharedmemory', 'es2020.string', 'es2020.symbol.wellknown', 'es2020.intl', 'es2020.number', 'es2021.promise', 'es2021.string', 'es2021.weakref', 'es2021.intl', 'es2022.array', 'es2022.error', 'es2022.intl', 'es2022.object', 'es2022.sharedmemory', 'es2022.string', 'es2022.regexp', 'es2023.array', 'es2023.collection', 'es2023.intl', 'esnext.array', 'esnext.collection', 'esnext.symbol', 'esnext.asynciterable', 'esnext.intl', 'esnext.disposable', 'esnext.bigint', 'esnext.string', 'esnext.promise', 'esnext.weakref', 'esnext.decorators', 'esnext.object', 'esnext.regexp', 'esnext.iterator', 'decorators', 'decorators.legacy'.
diff --git a/tests/baselines/reference/config/commandLineParsing/parseCommandLine/Parse --lib option with trailing white-space.js b/tests/baselines/reference/config/commandLineParsing/parseCommandLine/Parse --lib option with trailing white-space.js
index 87aeb7b21a2f3..596b4249a3c7a 100644
--- a/tests/baselines/reference/config/commandLineParsing/parseCommandLine/Parse --lib option with trailing white-space.js
+++ b/tests/baselines/reference/config/commandLineParsing/parseCommandLine/Parse --lib option with trailing white-space.js
@@ -10,4 +10,4 @@ WatchOptions::
FileNames::
es7,0.ts
Errors::
-error TS6046: Argument for '--lib' option must be: 'es5', 'es6', 'es2015', 'es7', 'es2016', 'es2017', 'es2018', 'es2019', 'es2020', 'es2021', 'es2022', 'es2023', 'esnext', 'dom', 'dom.iterable', 'dom.asynciterable', 'webworker', 'webworker.importscripts', 'webworker.iterable', 'webworker.asynciterable', 'scripthost', 'es2015.core', 'es2015.collection', 'es2015.generator', 'es2015.iterable', 'es2015.promise', 'es2015.proxy', 'es2015.reflect', 'es2015.symbol', 'es2015.symbol.wellknown', 'es2016.array.include', 'es2016.intl', 'es2017.date', 'es2017.object', 'es2017.sharedmemory', 'es2017.string', 'es2017.intl', 'es2017.typedarrays', 'es2018.asyncgenerator', 'es2018.asynciterable', 'es2018.intl', 'es2018.promise', 'es2018.regexp', 'es2019.array', 'es2019.object', 'es2019.string', 'es2019.symbol', 'es2019.intl', 'es2020.bigint', 'es2020.date', 'es2020.promise', 'es2020.sharedmemory', 'es2020.string', 'es2020.symbol.wellknown', 'es2020.intl', 'es2020.number', 'es2021.promise', 'es2021.string', 'es2021.weakref', 'es2021.intl', 'es2022.array', 'es2022.error', 'es2022.intl', 'es2022.object', 'es2022.sharedmemory', 'es2022.string', 'es2022.regexp', 'es2023.array', 'es2023.collection', 'es2023.intl', 'esnext.array', 'esnext.collection', 'esnext.symbol', 'esnext.asynciterable', 'esnext.intl', 'esnext.disposable', 'esnext.bigint', 'esnext.string', 'esnext.promise', 'esnext.weakref', 'esnext.decorators', 'esnext.object', 'esnext.regexp', 'decorators', 'decorators.legacy'.
+error TS6046: Argument for '--lib' option must be: 'es5', 'es6', 'es2015', 'es7', 'es2016', 'es2017', 'es2018', 'es2019', 'es2020', 'es2021', 'es2022', 'es2023', 'esnext', 'dom', 'dom.iterable', 'dom.asynciterable', 'webworker', 'webworker.importscripts', 'webworker.iterable', 'webworker.asynciterable', 'scripthost', 'es2015.core', 'es2015.collection', 'es2015.generator', 'es2015.iterable', 'es2015.promise', 'es2015.proxy', 'es2015.reflect', 'es2015.symbol', 'es2015.symbol.wellknown', 'es2016.array.include', 'es2016.intl', 'es2017.date', 'es2017.object', 'es2017.sharedmemory', 'es2017.string', 'es2017.intl', 'es2017.typedarrays', 'es2018.asyncgenerator', 'es2018.asynciterable', 'es2018.intl', 'es2018.promise', 'es2018.regexp', 'es2019.array', 'es2019.object', 'es2019.string', 'es2019.symbol', 'es2019.intl', 'es2020.bigint', 'es2020.date', 'es2020.promise', 'es2020.sharedmemory', 'es2020.string', 'es2020.symbol.wellknown', 'es2020.intl', 'es2020.number', 'es2021.promise', 'es2021.string', 'es2021.weakref', 'es2021.intl', 'es2022.array', 'es2022.error', 'es2022.intl', 'es2022.object', 'es2022.sharedmemory', 'es2022.string', 'es2022.regexp', 'es2023.array', 'es2023.collection', 'es2023.intl', 'esnext.array', 'esnext.collection', 'esnext.symbol', 'esnext.asynciterable', 'esnext.intl', 'esnext.disposable', 'esnext.bigint', 'esnext.string', 'esnext.promise', 'esnext.weakref', 'esnext.decorators', 'esnext.object', 'esnext.regexp', 'esnext.iterator', 'decorators', 'decorators.legacy'.
diff --git a/tests/baselines/reference/config/commandLineParsing/parseCommandLine/Parse invalid option of library flags.js b/tests/baselines/reference/config/commandLineParsing/parseCommandLine/Parse invalid option of library flags.js
index 0213cdbf5b8cd..807f4f9583f0f 100644
--- a/tests/baselines/reference/config/commandLineParsing/parseCommandLine/Parse invalid option of library flags.js
+++ b/tests/baselines/reference/config/commandLineParsing/parseCommandLine/Parse invalid option of library flags.js
@@ -10,4 +10,4 @@ WatchOptions::
FileNames::
0.ts
Errors::
-error TS6046: Argument for '--lib' option must be: 'es5', 'es6', 'es2015', 'es7', 'es2016', 'es2017', 'es2018', 'es2019', 'es2020', 'es2021', 'es2022', 'es2023', 'esnext', 'dom', 'dom.iterable', 'dom.asynciterable', 'webworker', 'webworker.importscripts', 'webworker.iterable', 'webworker.asynciterable', 'scripthost', 'es2015.core', 'es2015.collection', 'es2015.generator', 'es2015.iterable', 'es2015.promise', 'es2015.proxy', 'es2015.reflect', 'es2015.symbol', 'es2015.symbol.wellknown', 'es2016.array.include', 'es2016.intl', 'es2017.date', 'es2017.object', 'es2017.sharedmemory', 'es2017.string', 'es2017.intl', 'es2017.typedarrays', 'es2018.asyncgenerator', 'es2018.asynciterable', 'es2018.intl', 'es2018.promise', 'es2018.regexp', 'es2019.array', 'es2019.object', 'es2019.string', 'es2019.symbol', 'es2019.intl', 'es2020.bigint', 'es2020.date', 'es2020.promise', 'es2020.sharedmemory', 'es2020.string', 'es2020.symbol.wellknown', 'es2020.intl', 'es2020.number', 'es2021.promise', 'es2021.string', 'es2021.weakref', 'es2021.intl', 'es2022.array', 'es2022.error', 'es2022.intl', 'es2022.object', 'es2022.sharedmemory', 'es2022.string', 'es2022.regexp', 'es2023.array', 'es2023.collection', 'es2023.intl', 'esnext.array', 'esnext.collection', 'esnext.symbol', 'esnext.asynciterable', 'esnext.intl', 'esnext.disposable', 'esnext.bigint', 'esnext.string', 'esnext.promise', 'esnext.weakref', 'esnext.decorators', 'esnext.object', 'esnext.regexp', 'decorators', 'decorators.legacy'.
+error TS6046: Argument for '--lib' option must be: 'es5', 'es6', 'es2015', 'es7', 'es2016', 'es2017', 'es2018', 'es2019', 'es2020', 'es2021', 'es2022', 'es2023', 'esnext', 'dom', 'dom.iterable', 'dom.asynciterable', 'webworker', 'webworker.importscripts', 'webworker.iterable', 'webworker.asynciterable', 'scripthost', 'es2015.core', 'es2015.collection', 'es2015.generator', 'es2015.iterable', 'es2015.promise', 'es2015.proxy', 'es2015.reflect', 'es2015.symbol', 'es2015.symbol.wellknown', 'es2016.array.include', 'es2016.intl', 'es2017.date', 'es2017.object', 'es2017.sharedmemory', 'es2017.string', 'es2017.intl', 'es2017.typedarrays', 'es2018.asyncgenerator', 'es2018.asynciterable', 'es2018.intl', 'es2018.promise', 'es2018.regexp', 'es2019.array', 'es2019.object', 'es2019.string', 'es2019.symbol', 'es2019.intl', 'es2020.bigint', 'es2020.date', 'es2020.promise', 'es2020.sharedmemory', 'es2020.string', 'es2020.symbol.wellknown', 'es2020.intl', 'es2020.number', 'es2021.promise', 'es2021.string', 'es2021.weakref', 'es2021.intl', 'es2022.array', 'es2022.error', 'es2022.intl', 'es2022.object', 'es2022.sharedmemory', 'es2022.string', 'es2022.regexp', 'es2023.array', 'es2023.collection', 'es2023.intl', 'esnext.array', 'esnext.collection', 'esnext.symbol', 'esnext.asynciterable', 'esnext.intl', 'esnext.disposable', 'esnext.bigint', 'esnext.string', 'esnext.promise', 'esnext.weakref', 'esnext.decorators', 'esnext.object', 'esnext.regexp', 'esnext.iterator', 'decorators', 'decorators.legacy'.
diff --git a/tests/baselines/reference/config/convertCompilerOptionsFromJson/Convert empty string option of libs array to compiler-options with json api.js b/tests/baselines/reference/config/convertCompilerOptionsFromJson/Convert empty string option of libs array to compiler-options with json api.js
index 04028e2fda1d2..29cc5e97530d6 100644
--- a/tests/baselines/reference/config/convertCompilerOptionsFromJson/Convert empty string option of libs array to compiler-options with json api.js
+++ b/tests/baselines/reference/config/convertCompilerOptionsFromJson/Convert empty string option of libs array to compiler-options with json api.js
@@ -30,5 +30,5 @@ CompilerOptions::
"configFilePath": "/apath/tsconfig.json"
}
Errors::
-[91merror[0m[90m TS6046: [0mArgument for '--lib' option must be: 'es5', 'es6', 'es2015', 'es7', 'es2016', 'es2017', 'es2018', 'es2019', 'es2020', 'es2021', 'es2022', 'es2023', 'esnext', 'dom', 'dom.iterable', 'dom.asynciterable', 'webworker', 'webworker.importscripts', 'webworker.iterable', 'webworker.asynciterable', 'scripthost', 'es2015.core', 'es2015.collection', 'es2015.generator', 'es2015.iterable', 'es2015.promise', 'es2015.proxy', 'es2015.reflect', 'es2015.symbol', 'es2015.symbol.wellknown', 'es2016.array.include', 'es2016.intl', 'es2017.date', 'es2017.object', 'es2017.sharedmemory', 'es2017.string', 'es2017.intl', 'es2017.typedarrays', 'es2018.asyncgenerator', 'es2018.asynciterable', 'es2018.intl', 'es2018.promise', 'es2018.regexp', 'es2019.array', 'es2019.object', 'es2019.string', 'es2019.symbol', 'es2019.intl', 'es2020.bigint', 'es2020.date', 'es2020.promise', 'es2020.sharedmemory', 'es2020.string', 'es2020.symbol.wellknown', 'es2020.intl', 'es2020.number', 'es2021.promise', 'es2021.string', 'es2021.weakref', 'es2021.intl', 'es2022.array', 'es2022.error', 'es2022.intl', 'es2022.object', 'es2022.sharedmemory', 'es2022.string', 'es2022.regexp', 'es2023.array', 'es2023.collection', 'es2023.intl', 'esnext.array', 'esnext.collection', 'esnext.symbol', 'esnext.asynciterable', 'esnext.intl', 'esnext.disposable', 'esnext.bigint', 'esnext.string', 'esnext.promise', 'esnext.weakref', 'esnext.decorators', 'esnext.object', 'esnext.regexp', 'decorators', 'decorators.legacy'.
+[91merror[0m[90m TS6046: [0mArgument for '--lib' option must be: 'es5', 'es6', 'es2015', 'es7', 'es2016', 'es2017', 'es2018', 'es2019', 'es2020', 'es2021', 'es2022', 'es2023', 'esnext', 'dom', 'dom.iterable', 'dom.asynciterable', 'webworker', 'webworker.importscripts', 'webworker.iterable', 'webworker.asynciterable', 'scripthost', 'es2015.core', 'es2015.collection', 'es2015.generator', 'es2015.iterable', 'es2015.promise', 'es2015.proxy', 'es2015.reflect', 'es2015.symbol', 'es2015.symbol.wellknown', 'es2016.array.include', 'es2016.intl', 'es2017.date', 'es2017.object', 'es2017.sharedmemory', 'es2017.string', 'es2017.intl', 'es2017.typedarrays', 'es2018.asyncgenerator', 'es2018.asynciterable', 'es2018.intl', 'es2018.promise', 'es2018.regexp', 'es2019.array', 'es2019.object', 'es2019.string', 'es2019.symbol', 'es2019.intl', 'es2020.bigint', 'es2020.date', 'es2020.promise', 'es2020.sharedmemory', 'es2020.string', 'es2020.symbol.wellknown', 'es2020.intl', 'es2020.number', 'es2021.promise', 'es2021.string', 'es2021.weakref', 'es2021.intl', 'es2022.array', 'es2022.error', 'es2022.intl', 'es2022.object', 'es2022.sharedmemory', 'es2022.string', 'es2022.regexp', 'es2023.array', 'es2023.collection', 'es2023.intl', 'esnext.array', 'esnext.collection', 'esnext.symbol', 'esnext.asynciterable', 'esnext.intl', 'esnext.disposable', 'esnext.bigint', 'esnext.string', 'esnext.promise', 'esnext.weakref', 'esnext.decorators', 'esnext.object', 'esnext.regexp', 'esnext.iterator', 'decorators', 'decorators.legacy'.
diff --git a/tests/baselines/reference/config/convertCompilerOptionsFromJson/Convert empty string option of libs array to compiler-options with jsonSourceFile api.js b/tests/baselines/reference/config/convertCompilerOptionsFromJson/Convert empty string option of libs array to compiler-options with jsonSourceFile api.js
index 768504a015812..5166204b479ea 100644
--- a/tests/baselines/reference/config/convertCompilerOptionsFromJson/Convert empty string option of libs array to compiler-options with jsonSourceFile api.js
+++ b/tests/baselines/reference/config/convertCompilerOptionsFromJson/Convert empty string option of libs array to compiler-options with jsonSourceFile api.js
@@ -30,7 +30,7 @@ CompilerOptions::
"configFilePath": "/apath/tsconfig.json"
}
Errors::
-[96mtsconfig.json[0m:[93m8[0m:[93m7[0m - [91merror[0m[90m TS6046: [0mArgument for '--lib' option must be: 'es5', 'es6', 'es2015', 'es7', 'es2016', 'es2017', 'es2018', 'es2019', 'es2020', 'es2021', 'es2022', 'es2023', 'esnext', 'dom', 'dom.iterable', 'dom.asynciterable', 'webworker', 'webworker.importscripts', 'webworker.iterable', 'webworker.asynciterable', 'scripthost', 'es2015.core', 'es2015.collection', 'es2015.generator', 'es2015.iterable', 'es2015.promise', 'es2015.proxy', 'es2015.reflect', 'es2015.symbol', 'es2015.symbol.wellknown', 'es2016.array.include', 'es2016.intl', 'es2017.date', 'es2017.object', 'es2017.sharedmemory', 'es2017.string', 'es2017.intl', 'es2017.typedarrays', 'es2018.asyncgenerator', 'es2018.asynciterable', 'es2018.intl', 'es2018.promise', 'es2018.regexp', 'es2019.array', 'es2019.object', 'es2019.string', 'es2019.symbol', 'es2019.intl', 'es2020.bigint', 'es2020.date', 'es2020.promise', 'es2020.sharedmemory', 'es2020.string', 'es2020.symbol.wellknown', 'es2020.intl', 'es2020.number', 'es2021.promise', 'es2021.string', 'es2021.weakref', 'es2021.intl', 'es2022.array', 'es2022.error', 'es2022.intl', 'es2022.object', 'es2022.sharedmemory', 'es2022.string', 'es2022.regexp', 'es2023.array', 'es2023.collection', 'es2023.intl', 'esnext.array', 'esnext.collection', 'esnext.symbol', 'esnext.asynciterable', 'esnext.intl', 'esnext.disposable', 'esnext.bigint', 'esnext.string', 'esnext.promise', 'esnext.weakref', 'esnext.decorators', 'esnext.object', 'esnext.regexp', 'decorators', 'decorators.legacy'.
+[96mtsconfig.json[0m:[93m8[0m:[93m7[0m - [91merror[0m[90m TS6046: [0mArgument for '--lib' option must be: 'es5', 'es6', 'es2015', 'es7', 'es2016', 'es2017', 'es2018', 'es2019', 'es2020', 'es2021', 'es2022', 'es2023', 'esnext', 'dom', 'dom.iterable', 'dom.asynciterable', 'webworker', 'webworker.importscripts', 'webworker.iterable', 'webworker.asynciterable', 'scripthost', 'es2015.core', 'es2015.collection', 'es2015.generator', 'es2015.iterable', 'es2015.promise', 'es2015.proxy', 'es2015.reflect', 'es2015.symbol', 'es2015.symbol.wellknown', 'es2016.array.include', 'es2016.intl', 'es2017.date', 'es2017.object', 'es2017.sharedmemory', 'es2017.string', 'es2017.intl', 'es2017.typedarrays', 'es2018.asyncgenerator', 'es2018.asynciterable', 'es2018.intl', 'es2018.promise', 'es2018.regexp', 'es2019.array', 'es2019.object', 'es2019.string', 'es2019.symbol', 'es2019.intl', 'es2020.bigint', 'es2020.date', 'es2020.promise', 'es2020.sharedmemory', 'es2020.string', 'es2020.symbol.wellknown', 'es2020.intl', 'es2020.number', 'es2021.promise', 'es2021.string', 'es2021.weakref', 'es2021.intl', 'es2022.array', 'es2022.error', 'es2022.intl', 'es2022.object', 'es2022.sharedmemory', 'es2022.string', 'es2022.regexp', 'es2023.array', 'es2023.collection', 'es2023.intl', 'esnext.array', 'esnext.collection', 'esnext.symbol', 'esnext.asynciterable', 'esnext.intl', 'esnext.disposable', 'esnext.bigint', 'esnext.string', 'esnext.promise', 'esnext.weakref', 'esnext.decorators', 'esnext.object', 'esnext.regexp', 'esnext.iterator', 'decorators', 'decorators.legacy'.
[7m8[0m ""
[7m [0m [91m ~~[0m
diff --git a/tests/baselines/reference/config/convertCompilerOptionsFromJson/Convert empty string option of libs to compiler-options with json api.js b/tests/baselines/reference/config/convertCompilerOptionsFromJson/Convert empty string option of libs to compiler-options with json api.js
index 12cd9f9a69f6e..1256fcb0be357 100644
--- a/tests/baselines/reference/config/convertCompilerOptionsFromJson/Convert empty string option of libs to compiler-options with json api.js
+++ b/tests/baselines/reference/config/convertCompilerOptionsFromJson/Convert empty string option of libs to compiler-options with json api.js
@@ -33,5 +33,5 @@ CompilerOptions::
"configFilePath": "/apath/tsconfig.json"
}
Errors::
-[91merror[0m[90m TS6046: [0mArgument for '--lib' option must be: 'es5', 'es6', 'es2015', 'es7', 'es2016', 'es2017', 'es2018', 'es2019', 'es2020', 'es2021', 'es2022', 'es2023', 'esnext', 'dom', 'dom.iterable', 'dom.asynciterable', 'webworker', 'webworker.importscripts', 'webworker.iterable', 'webworker.asynciterable', 'scripthost', 'es2015.core', 'es2015.collection', 'es2015.generator', 'es2015.iterable', 'es2015.promise', 'es2015.proxy', 'es2015.reflect', 'es2015.symbol', 'es2015.symbol.wellknown', 'es2016.array.include', 'es2016.intl', 'es2017.date', 'es2017.object', 'es2017.sharedmemory', 'es2017.string', 'es2017.intl', 'es2017.typedarrays', 'es2018.asyncgenerator', 'es2018.asynciterable', 'es2018.intl', 'es2018.promise', 'es2018.regexp', 'es2019.array', 'es2019.object', 'es2019.string', 'es2019.symbol', 'es2019.intl', 'es2020.bigint', 'es2020.date', 'es2020.promise', 'es2020.sharedmemory', 'es2020.string', 'es2020.symbol.wellknown', 'es2020.intl', 'es2020.number', 'es2021.promise', 'es2021.string', 'es2021.weakref', 'es2021.intl', 'es2022.array', 'es2022.error', 'es2022.intl', 'es2022.object', 'es2022.sharedmemory', 'es2022.string', 'es2022.regexp', 'es2023.array', 'es2023.collection', 'es2023.intl', 'esnext.array', 'esnext.collection', 'esnext.symbol', 'esnext.asynciterable', 'esnext.intl', 'esnext.disposable', 'esnext.bigint', 'esnext.string', 'esnext.promise', 'esnext.weakref', 'esnext.decorators', 'esnext.object', 'esnext.regexp', 'decorators', 'decorators.legacy'.
+[91merror[0m[90m TS6046: [0mArgument for '--lib' option must be: 'es5', 'es6', 'es2015', 'es7', 'es2016', 'es2017', 'es2018', 'es2019', 'es2020', 'es2021', 'es2022', 'es2023', 'esnext', 'dom', 'dom.iterable', 'dom.asynciterable', 'webworker', 'webworker.importscripts', 'webworker.iterable', 'webworker.asynciterable', 'scripthost', 'es2015.core', 'es2015.collection', 'es2015.generator', 'es2015.iterable', 'es2015.promise', 'es2015.proxy', 'es2015.reflect', 'es2015.symbol', 'es2015.symbol.wellknown', 'es2016.array.include', 'es2016.intl', 'es2017.date', 'es2017.object', 'es2017.sharedmemory', 'es2017.string', 'es2017.intl', 'es2017.typedarrays', 'es2018.asyncgenerator', 'es2018.asynciterable', 'es2018.intl', 'es2018.promise', 'es2018.regexp', 'es2019.array', 'es2019.object', 'es2019.string', 'es2019.symbol', 'es2019.intl', 'es2020.bigint', 'es2020.date', 'es2020.promise', 'es2020.sharedmemory', 'es2020.string', 'es2020.symbol.wellknown', 'es2020.intl', 'es2020.number', 'es2021.promise', 'es2021.string', 'es2021.weakref', 'es2021.intl', 'es2022.array', 'es2022.error', 'es2022.intl', 'es2022.object', 'es2022.sharedmemory', 'es2022.string', 'es2022.regexp', 'es2023.array', 'es2023.collection', 'es2023.intl', 'esnext.array', 'esnext.collection', 'esnext.symbol', 'esnext.asynciterable', 'esnext.intl', 'esnext.disposable', 'esnext.bigint', 'esnext.string', 'esnext.promise', 'esnext.weakref', 'esnext.decorators', 'esnext.object', 'esnext.regexp', 'esnext.iterator', 'decorators', 'decorators.legacy'.
diff --git a/tests/baselines/reference/config/convertCompilerOptionsFromJson/Convert empty string option of libs to compiler-options with jsonSourceFile api.js b/tests/baselines/reference/config/convertCompilerOptionsFromJson/Convert empty string option of libs to compiler-options with jsonSourceFile api.js
index b220f686852a8..db849a0aecc78 100644
--- a/tests/baselines/reference/config/convertCompilerOptionsFromJson/Convert empty string option of libs to compiler-options with jsonSourceFile api.js
+++ b/tests/baselines/reference/config/convertCompilerOptionsFromJson/Convert empty string option of libs to compiler-options with jsonSourceFile api.js
@@ -33,7 +33,7 @@ CompilerOptions::
"configFilePath": "/apath/tsconfig.json"
}
Errors::
-[96mtsconfig.json[0m:[93m9[0m:[93m7[0m - [91merror[0m[90m TS6046: [0mArgument for '--lib' option must be: 'es5', 'es6', 'es2015', 'es7', 'es2016', 'es2017', 'es2018', 'es2019', 'es2020', 'es2021', 'es2022', 'es2023', 'esnext', 'dom', 'dom.iterable', 'dom.asynciterable', 'webworker', 'webworker.importscripts', 'webworker.iterable', 'webworker.asynciterable', 'scripthost', 'es2015.core', 'es2015.collection', 'es2015.generator', 'es2015.iterable', 'es2015.promise', 'es2015.proxy', 'es2015.reflect', 'es2015.symbol', 'es2015.symbol.wellknown', 'es2016.array.include', 'es2016.intl', 'es2017.date', 'es2017.object', 'es2017.sharedmemory', 'es2017.string', 'es2017.intl', 'es2017.typedarrays', 'es2018.asyncgenerator', 'es2018.asynciterable', 'es2018.intl', 'es2018.promise', 'es2018.regexp', 'es2019.array', 'es2019.object', 'es2019.string', 'es2019.symbol', 'es2019.intl', 'es2020.bigint', 'es2020.date', 'es2020.promise', 'es2020.sharedmemory', 'es2020.string', 'es2020.symbol.wellknown', 'es2020.intl', 'es2020.number', 'es2021.promise', 'es2021.string', 'es2021.weakref', 'es2021.intl', 'es2022.array', 'es2022.error', 'es2022.intl', 'es2022.object', 'es2022.sharedmemory', 'es2022.string', 'es2022.regexp', 'es2023.array', 'es2023.collection', 'es2023.intl', 'esnext.array', 'esnext.collection', 'esnext.symbol', 'esnext.asynciterable', 'esnext.intl', 'esnext.disposable', 'esnext.bigint', 'esnext.string', 'esnext.promise', 'esnext.weakref', 'esnext.decorators', 'esnext.object', 'esnext.regexp', 'decorators', 'decorators.legacy'.
+[96mtsconfig.json[0m:[93m9[0m:[93m7[0m - [91merror[0m[90m TS6046: [0mArgument for '--lib' option must be: 'es5', 'es6', 'es2015', 'es7', 'es2016', 'es2017', 'es2018', 'es2019', 'es2020', 'es2021', 'es2022', 'es2023', 'esnext', 'dom', 'dom.iterable', 'dom.asynciterable', 'webworker', 'webworker.importscripts', 'webworker.iterable', 'webworker.asynciterable', 'scripthost', 'es2015.core', 'es2015.collection', 'es2015.generator', 'es2015.iterable', 'es2015.promise', 'es2015.proxy', 'es2015.reflect', 'es2015.symbol', 'es2015.symbol.wellknown', 'es2016.array.include', 'es2016.intl', 'es2017.date', 'es2017.object', 'es2017.sharedmemory', 'es2017.string', 'es2017.intl', 'es2017.typedarrays', 'es2018.asyncgenerator', 'es2018.asynciterable', 'es2018.intl', 'es2018.promise', 'es2018.regexp', 'es2019.array', 'es2019.object', 'es2019.string', 'es2019.symbol', 'es2019.intl', 'es2020.bigint', 'es2020.date', 'es2020.promise', 'es2020.sharedmemory', 'es2020.string', 'es2020.symbol.wellknown', 'es2020.intl', 'es2020.number', 'es2021.promise', 'es2021.string', 'es2021.weakref', 'es2021.intl', 'es2022.array', 'es2022.error', 'es2022.intl', 'es2022.object', 'es2022.sharedmemory', 'es2022.string', 'es2022.regexp', 'es2023.array', 'es2023.collection', 'es2023.intl', 'esnext.array', 'esnext.collection', 'esnext.symbol', 'esnext.asynciterable', 'esnext.intl', 'esnext.disposable', 'esnext.bigint', 'esnext.string', 'esnext.promise', 'esnext.weakref', 'esnext.decorators', 'esnext.object', 'esnext.regexp', 'esnext.iterator', 'decorators', 'decorators.legacy'.
[7m9[0m ""
[7m [0m [91m ~~[0m
diff --git a/tests/baselines/reference/config/convertCompilerOptionsFromJson/Convert incorrect option of libs to compiler-options with json api.js b/tests/baselines/reference/config/convertCompilerOptionsFromJson/Convert incorrect option of libs to compiler-options with json api.js
index 53df38f31b261..e1d795e42bd20 100644
--- a/tests/baselines/reference/config/convertCompilerOptionsFromJson/Convert incorrect option of libs to compiler-options with json api.js
+++ b/tests/baselines/reference/config/convertCompilerOptionsFromJson/Convert incorrect option of libs to compiler-options with json api.js
@@ -35,5 +35,5 @@ CompilerOptions::
"configFilePath": "/apath/tsconfig.json"
}
Errors::
-[91merror[0m[90m TS6046: [0mArgument for '--lib' option must be: 'es5', 'es6', 'es2015', 'es7', 'es2016', 'es2017', 'es2018', 'es2019', 'es2020', 'es2021', 'es2022', 'es2023', 'esnext', 'dom', 'dom.iterable', 'dom.asynciterable', 'webworker', 'webworker.importscripts', 'webworker.iterable', 'webworker.asynciterable', 'scripthost', 'es2015.core', 'es2015.collection', 'es2015.generator', 'es2015.iterable', 'es2015.promise', 'es2015.proxy', 'es2015.reflect', 'es2015.symbol', 'es2015.symbol.wellknown', 'es2016.array.include', 'es2016.intl', 'es2017.date', 'es2017.object', 'es2017.sharedmemory', 'es2017.string', 'es2017.intl', 'es2017.typedarrays', 'es2018.asyncgenerator', 'es2018.asynciterable', 'es2018.intl', 'es2018.promise', 'es2018.regexp', 'es2019.array', 'es2019.object', 'es2019.string', 'es2019.symbol', 'es2019.intl', 'es2020.bigint', 'es2020.date', 'es2020.promise', 'es2020.sharedmemory', 'es2020.string', 'es2020.symbol.wellknown', 'es2020.intl', 'es2020.number', 'es2021.promise', 'es2021.string', 'es2021.weakref', 'es2021.intl', 'es2022.array', 'es2022.error', 'es2022.intl', 'es2022.object', 'es2022.sharedmemory', 'es2022.string', 'es2022.regexp', 'es2023.array', 'es2023.collection', 'es2023.intl', 'esnext.array', 'esnext.collection', 'esnext.symbol', 'esnext.asynciterable', 'esnext.intl', 'esnext.disposable', 'esnext.bigint', 'esnext.string', 'esnext.promise', 'esnext.weakref', 'esnext.decorators', 'esnext.object', 'esnext.regexp', 'decorators', 'decorators.legacy'.
+[91merror[0m[90m TS6046: [0mArgument for '--lib' option must be: 'es5', 'es6', 'es2015', 'es7', 'es2016', 'es2017', 'es2018', 'es2019', 'es2020', 'es2021', 'es2022', 'es2023', 'esnext', 'dom', 'dom.iterable', 'dom.asynciterable', 'webworker', 'webworker.importscripts', 'webworker.iterable', 'webworker.asynciterable', 'scripthost', 'es2015.core', 'es2015.collection', 'es2015.generator', 'es2015.iterable', 'es2015.promise', 'es2015.proxy', 'es2015.reflect', 'es2015.symbol', 'es2015.symbol.wellknown', 'es2016.array.include', 'es2016.intl', 'es2017.date', 'es2017.object', 'es2017.sharedmemory', 'es2017.string', 'es2017.intl', 'es2017.typedarrays', 'es2018.asyncgenerator', 'es2018.asynciterable', 'es2018.intl', 'es2018.promise', 'es2018.regexp', 'es2019.array', 'es2019.object', 'es2019.string', 'es2019.symbol', 'es2019.intl', 'es2020.bigint', 'es2020.date', 'es2020.promise', 'es2020.sharedmemory', 'es2020.string', 'es2020.symbol.wellknown', 'es2020.intl', 'es2020.number', 'es2021.promise', 'es2021.string', 'es2021.weakref', 'es2021.intl', 'es2022.array', 'es2022.error', 'es2022.intl', 'es2022.object', 'es2022.sharedmemory', 'es2022.string', 'es2022.regexp', 'es2023.array', 'es2023.collection', 'es2023.intl', 'esnext.array', 'esnext.collection', 'esnext.symbol', 'esnext.asynciterable', 'esnext.intl', 'esnext.disposable', 'esnext.bigint', 'esnext.string', 'esnext.promise', 'esnext.weakref', 'esnext.decorators', 'esnext.object', 'esnext.regexp', 'esnext.iterator', 'decorators', 'decorators.legacy'.
diff --git a/tests/baselines/reference/config/convertCompilerOptionsFromJson/Convert incorrect option of libs to compiler-options with jsonSourceFile api.js b/tests/baselines/reference/config/convertCompilerOptionsFromJson/Convert incorrect option of libs to compiler-options with jsonSourceFile api.js
index d528f18a59522..21f96c3a576ad 100644
--- a/tests/baselines/reference/config/convertCompilerOptionsFromJson/Convert incorrect option of libs to compiler-options with jsonSourceFile api.js
+++ b/tests/baselines/reference/config/convertCompilerOptionsFromJson/Convert incorrect option of libs to compiler-options with jsonSourceFile api.js
@@ -35,7 +35,7 @@ CompilerOptions::
"configFilePath": "/apath/tsconfig.json"
}
Errors::
-[96mtsconfig.json[0m:[93m10[0m:[93m7[0m - [91merror[0m[90m TS6046: [0mArgument for '--lib' option must be: 'es5', 'es6', 'es2015', 'es7', 'es2016', 'es2017', 'es2018', 'es2019', 'es2020', 'es2021', 'es2022', 'es2023', 'esnext', 'dom', 'dom.iterable', 'dom.asynciterable', 'webworker', 'webworker.importscripts', 'webworker.iterable', 'webworker.asynciterable', 'scripthost', 'es2015.core', 'es2015.collection', 'es2015.generator', 'es2015.iterable', 'es2015.promise', 'es2015.proxy', 'es2015.reflect', 'es2015.symbol', 'es2015.symbol.wellknown', 'es2016.array.include', 'es2016.intl', 'es2017.date', 'es2017.object', 'es2017.sharedmemory', 'es2017.string', 'es2017.intl', 'es2017.typedarrays', 'es2018.asyncgenerator', 'es2018.asynciterable', 'es2018.intl', 'es2018.promise', 'es2018.regexp', 'es2019.array', 'es2019.object', 'es2019.string', 'es2019.symbol', 'es2019.intl', 'es2020.bigint', 'es2020.date', 'es2020.promise', 'es2020.sharedmemory', 'es2020.string', 'es2020.symbol.wellknown', 'es2020.intl', 'es2020.number', 'es2021.promise', 'es2021.string', 'es2021.weakref', 'es2021.intl', 'es2022.array', 'es2022.error', 'es2022.intl', 'es2022.object', 'es2022.sharedmemory', 'es2022.string', 'es2022.regexp', 'es2023.array', 'es2023.collection', 'es2023.intl', 'esnext.array', 'esnext.collection', 'esnext.symbol', 'esnext.asynciterable', 'esnext.intl', 'esnext.disposable', 'esnext.bigint', 'esnext.string', 'esnext.promise', 'esnext.weakref', 'esnext.decorators', 'esnext.object', 'esnext.regexp', 'decorators', 'decorators.legacy'.
+[96mtsconfig.json[0m:[93m10[0m:[93m7[0m - [91merror[0m[90m TS6046: [0mArgument for '--lib' option must be: 'es5', 'es6', 'es2015', 'es7', 'es2016', 'es2017', 'es2018', 'es2019', 'es2020', 'es2021', 'es2022', 'es2023', 'esnext', 'dom', 'dom.iterable', 'dom.asynciterable', 'webworker', 'webworker.importscripts', 'webworker.iterable', 'webworker.asynciterable', 'scripthost', 'es2015.core', 'es2015.collection', 'es2015.generator', 'es2015.iterable', 'es2015.promise', 'es2015.proxy', 'es2015.reflect', 'es2015.symbol', 'es2015.symbol.wellknown', 'es2016.array.include', 'es2016.intl', 'es2017.date', 'es2017.object', 'es2017.sharedmemory', 'es2017.string', 'es2017.intl', 'es2017.typedarrays', 'es2018.asyncgenerator', 'es2018.asynciterable', 'es2018.intl', 'es2018.promise', 'es2018.regexp', 'es2019.array', 'es2019.object', 'es2019.string', 'es2019.symbol', 'es2019.intl', 'es2020.bigint', 'es2020.date', 'es2020.promise', 'es2020.sharedmemory', 'es2020.string', 'es2020.symbol.wellknown', 'es2020.intl', 'es2020.number', 'es2021.promise', 'es2021.string', 'es2021.weakref', 'es2021.intl', 'es2022.array', 'es2022.error', 'es2022.intl', 'es2022.object', 'es2022.sharedmemory', 'es2022.string', 'es2022.regexp', 'es2023.array', 'es2023.collection', 'es2023.intl', 'esnext.array', 'esnext.collection', 'esnext.symbol', 'esnext.asynciterable', 'esnext.intl', 'esnext.disposable', 'esnext.bigint', 'esnext.string', 'esnext.promise', 'esnext.weakref', 'esnext.decorators', 'esnext.object', 'esnext.regexp', 'esnext.iterator', 'decorators', 'decorators.legacy'.
[7m10[0m "incorrectLib"
[7m [0m [91m ~~~~~~~~~~~~~~[0m
diff --git a/tests/baselines/reference/config/convertCompilerOptionsFromJson/Convert trailing-whitespace string option of libs to compiler-options with json api.js b/tests/baselines/reference/config/convertCompilerOptionsFromJson/Convert trailing-whitespace string option of libs to compiler-options with json api.js
index 910344faabca5..b4f79a2e2c1f5 100644
--- a/tests/baselines/reference/config/convertCompilerOptionsFromJson/Convert trailing-whitespace string option of libs to compiler-options with json api.js
+++ b/tests/baselines/reference/config/convertCompilerOptionsFromJson/Convert trailing-whitespace string option of libs to compiler-options with json api.js
@@ -30,5 +30,5 @@ CompilerOptions::
"configFilePath": "/apath/tsconfig.json"
}
Errors::
-[91merror[0m[90m TS6046: [0mArgument for '--lib' option must be: 'es5', 'es6', 'es2015', 'es7', 'es2016', 'es2017', 'es2018', 'es2019', 'es2020', 'es2021', 'es2022', 'es2023', 'esnext', 'dom', 'dom.iterable', 'dom.asynciterable', 'webworker', 'webworker.importscripts', 'webworker.iterable', 'webworker.asynciterable', 'scripthost', 'es2015.core', 'es2015.collection', 'es2015.generator', 'es2015.iterable', 'es2015.promise', 'es2015.proxy', 'es2015.reflect', 'es2015.symbol', 'es2015.symbol.wellknown', 'es2016.array.include', 'es2016.intl', 'es2017.date', 'es2017.object', 'es2017.sharedmemory', 'es2017.string', 'es2017.intl', 'es2017.typedarrays', 'es2018.asyncgenerator', 'es2018.asynciterable', 'es2018.intl', 'es2018.promise', 'es2018.regexp', 'es2019.array', 'es2019.object', 'es2019.string', 'es2019.symbol', 'es2019.intl', 'es2020.bigint', 'es2020.date', 'es2020.promise', 'es2020.sharedmemory', 'es2020.string', 'es2020.symbol.wellknown', 'es2020.intl', 'es2020.number', 'es2021.promise', 'es2021.string', 'es2021.weakref', 'es2021.intl', 'es2022.array', 'es2022.error', 'es2022.intl', 'es2022.object', 'es2022.sharedmemory', 'es2022.string', 'es2022.regexp', 'es2023.array', 'es2023.collection', 'es2023.intl', 'esnext.array', 'esnext.collection', 'esnext.symbol', 'esnext.asynciterable', 'esnext.intl', 'esnext.disposable', 'esnext.bigint', 'esnext.string', 'esnext.promise', 'esnext.weakref', 'esnext.decorators', 'esnext.object', 'esnext.regexp', 'decorators', 'decorators.legacy'.
+[91merror[0m[90m TS6046: [0mArgument for '--lib' option must be: 'es5', 'es6', 'es2015', 'es7', 'es2016', 'es2017', 'es2018', 'es2019', 'es2020', 'es2021', 'es2022', 'es2023', 'esnext', 'dom', 'dom.iterable', 'dom.asynciterable', 'webworker', 'webworker.importscripts', 'webworker.iterable', 'webworker.asynciterable', 'scripthost', 'es2015.core', 'es2015.collection', 'es2015.generator', 'es2015.iterable', 'es2015.promise', 'es2015.proxy', 'es2015.reflect', 'es2015.symbol', 'es2015.symbol.wellknown', 'es2016.array.include', 'es2016.intl', 'es2017.date', 'es2017.object', 'es2017.sharedmemory', 'es2017.string', 'es2017.intl', 'es2017.typedarrays', 'es2018.asyncgenerator', 'es2018.asynciterable', 'es2018.intl', 'es2018.promise', 'es2018.regexp', 'es2019.array', 'es2019.object', 'es2019.string', 'es2019.symbol', 'es2019.intl', 'es2020.bigint', 'es2020.date', 'es2020.promise', 'es2020.sharedmemory', 'es2020.string', 'es2020.symbol.wellknown', 'es2020.intl', 'es2020.number', 'es2021.promise', 'es2021.string', 'es2021.weakref', 'es2021.intl', 'es2022.array', 'es2022.error', 'es2022.intl', 'es2022.object', 'es2022.sharedmemory', 'es2022.string', 'es2022.regexp', 'es2023.array', 'es2023.collection', 'es2023.intl', 'esnext.array', 'esnext.collection', 'esnext.symbol', 'esnext.asynciterable', 'esnext.intl', 'esnext.disposable', 'esnext.bigint', 'esnext.string', 'esnext.promise', 'esnext.weakref', 'esnext.decorators', 'esnext.object', 'esnext.regexp', 'esnext.iterator', 'decorators', 'decorators.legacy'.
diff --git a/tests/baselines/reference/config/convertCompilerOptionsFromJson/Convert trailing-whitespace string option of libs to compiler-options with jsonSourceFile api.js b/tests/baselines/reference/config/convertCompilerOptionsFromJson/Convert trailing-whitespace string option of libs to compiler-options with jsonSourceFile api.js
index 0878868862dc7..8c18f04855e76 100644
--- a/tests/baselines/reference/config/convertCompilerOptionsFromJson/Convert trailing-whitespace string option of libs to compiler-options with jsonSourceFile api.js
+++ b/tests/baselines/reference/config/convertCompilerOptionsFromJson/Convert trailing-whitespace string option of libs to compiler-options with jsonSourceFile api.js
@@ -30,7 +30,7 @@ CompilerOptions::
"configFilePath": "/apath/tsconfig.json"
}
Errors::
-[96mtsconfig.json[0m:[93m8[0m:[93m7[0m - [91merror[0m[90m TS6046: [0mArgument for '--lib' option must be: 'es5', 'es6', 'es2015', 'es7', 'es2016', 'es2017', 'es2018', 'es2019', 'es2020', 'es2021', 'es2022', 'es2023', 'esnext', 'dom', 'dom.iterable', 'dom.asynciterable', 'webworker', 'webworker.importscripts', 'webworker.iterable', 'webworker.asynciterable', 'scripthost', 'es2015.core', 'es2015.collection', 'es2015.generator', 'es2015.iterable', 'es2015.promise', 'es2015.proxy', 'es2015.reflect', 'es2015.symbol', 'es2015.symbol.wellknown', 'es2016.array.include', 'es2016.intl', 'es2017.date', 'es2017.object', 'es2017.sharedmemory', 'es2017.string', 'es2017.intl', 'es2017.typedarrays', 'es2018.asyncgenerator', 'es2018.asynciterable', 'es2018.intl', 'es2018.promise', 'es2018.regexp', 'es2019.array', 'es2019.object', 'es2019.string', 'es2019.symbol', 'es2019.intl', 'es2020.bigint', 'es2020.date', 'es2020.promise', 'es2020.sharedmemory', 'es2020.string', 'es2020.symbol.wellknown', 'es2020.intl', 'es2020.number', 'es2021.promise', 'es2021.string', 'es2021.weakref', 'es2021.intl', 'es2022.array', 'es2022.error', 'es2022.intl', 'es2022.object', 'es2022.sharedmemory', 'es2022.string', 'es2022.regexp', 'es2023.array', 'es2023.collection', 'es2023.intl', 'esnext.array', 'esnext.collection', 'esnext.symbol', 'esnext.asynciterable', 'esnext.intl', 'esnext.disposable', 'esnext.bigint', 'esnext.string', 'esnext.promise', 'esnext.weakref', 'esnext.decorators', 'esnext.object', 'esnext.regexp', 'decorators', 'decorators.legacy'.
+[96mtsconfig.json[0m:[93m8[0m:[93m7[0m - [91merror[0m[90m TS6046: [0mArgument for '--lib' option must be: 'es5', 'es6', 'es2015', 'es7', 'es2016', 'es2017', 'es2018', 'es2019', 'es2020', 'es2021', 'es2022', 'es2023', 'esnext', 'dom', 'dom.iterable', 'dom.asynciterable', 'webworker', 'webworker.importscripts', 'webworker.iterable', 'webworker.asynciterable', 'scripthost', 'es2015.core', 'es2015.collection', 'es2015.generator', 'es2015.iterable', 'es2015.promise', 'es2015.proxy', 'es2015.reflect', 'es2015.symbol', 'es2015.symbol.wellknown', 'es2016.array.include', 'es2016.intl', 'es2017.date', 'es2017.object', 'es2017.sharedmemory', 'es2017.string', 'es2017.intl', 'es2017.typedarrays', 'es2018.asyncgenerator', 'es2018.asynciterable', 'es2018.intl', 'es2018.promise', 'es2018.regexp', 'es2019.array', 'es2019.object', 'es2019.string', 'es2019.symbol', 'es2019.intl', 'es2020.bigint', 'es2020.date', 'es2020.promise', 'es2020.sharedmemory', 'es2020.string', 'es2020.symbol.wellknown', 'es2020.intl', 'es2020.number', 'es2021.promise', 'es2021.string', 'es2021.weakref', 'es2021.intl', 'es2022.array', 'es2022.error', 'es2022.intl', 'es2022.object', 'es2022.sharedmemory', 'es2022.string', 'es2022.regexp', 'es2023.array', 'es2023.collection', 'es2023.intl', 'esnext.array', 'esnext.collection', 'esnext.symbol', 'esnext.asynciterable', 'esnext.intl', 'esnext.disposable', 'esnext.bigint', 'esnext.string', 'esnext.promise', 'esnext.weakref', 'esnext.decorators', 'esnext.object', 'esnext.regexp', 'esnext.iterator', 'decorators', 'decorators.legacy'.
[7m8[0m " "
[7m [0m [91m ~~~~~[0m
diff --git a/tests/baselines/reference/dependentDestructuredVariables.symbols b/tests/baselines/reference/dependentDestructuredVariables.symbols
index ae71b255d1a88..f3d5beb7b983b 100644
--- a/tests/baselines/reference/dependentDestructuredVariables.symbols
+++ b/tests/baselines/reference/dependentDestructuredVariables.symbols
@@ -477,7 +477,7 @@ const reducerBroken = (state: number, { type, payload }: Action3) => {
declare var it: Iterator<number>;
>it : Symbol(it, Decl(dependentDestructuredVariables.ts, 183, 11))
->Iterator : Symbol(Iterator, Decl(lib.es2015.iterable.d.ts, --, --))
+>Iterator : Symbol(Iterator, Decl(lib.es2015.iterable.d.ts, --, --), Decl(lib.esnext.iterator.d.ts, --, --))
const { value, done } = it.next();
>value : Symbol(value, Decl(dependentDestructuredVariables.ts, 184, 7))
diff --git a/tests/baselines/reference/dependentDestructuredVariables.types b/tests/baselines/reference/dependentDestructuredVariables.types
index 290bb2d397328..1b829f101d426 100644
--- a/tests/baselines/reference/dependentDestructuredVariables.types
+++ b/tests/baselines/reference/dependentDestructuredVariables.types
@@ -2,7 +2,7 @@
=== Performance Stats ===
Type Count: 2,500
-Instantiation count: 1,000
+Instantiation count: 5,000
=== dependentDestructuredVariables.ts ===
type Action =
diff --git a/tests/baselines/reference/destructuredLateBoundNameHasCorrectTypes.types b/tests/baselines/reference/destructuredLateBoundNameHasCorrectTypes.types
index 5259f7d4b496b..3a69a723a7b2f 100644
--- a/tests/baselines/reference/destructuredLateBoundNameHasCorrectTypes.types
+++ b/tests/baselines/reference/destructuredLateBoundNameHasCorrectTypes.types
@@ -8,16 +8,16 @@ let { [Symbol.iterator]: destructured } = [];
> : ^^^^^^^^^^^^^^^^^
>iterator : unique symbol
> : ^^^^^^^^^^^^^
->destructured : () => IterableIterator<undefined>
-> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+>destructured : () => BuiltinIterator<undefined, any, any>
+> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
>[] : undefined[]
> : ^^^^^^^^^^^
void destructured;
>void destructured : undefined
> : ^^^^^^^^^
->destructured : () => IterableIterator<undefined>
-> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+>destructured : () => BuiltinIterator<undefined, any, any>
+> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
const named = "prop";
>named : "prop"
diff --git a/tests/baselines/reference/esNextWeakRefs_IterableWeakMap.types b/tests/baselines/reference/esNextWeakRefs_IterableWeakMap.types
index d53b79137fc27..a5fdfa43c94c8 100644
--- a/tests/baselines/reference/esNextWeakRefs_IterableWeakMap.types
+++ b/tests/baselines/reference/esNextWeakRefs_IterableWeakMap.types
@@ -1,5 +1,9 @@
//// [tests/cases/compiler/esNextWeakRefs_IterableWeakMap.ts] ////
+=== Performance Stats ===
+Type Count: 1,000
+Instantiation count: 1,000 -> 2,500
+
=== esNextWeakRefs_IterableWeakMap.ts ===
/** `static #cleanup` */
const IterableWeakMap_cleanup = ({ ref, set }: {
diff --git a/tests/baselines/reference/for-of12.types b/tests/baselines/reference/for-of12.types
index 24c0ba69b975a..3bab8ba58592f 100644
--- a/tests/baselines/reference/for-of12.types
+++ b/tests/baselines/reference/for-of12.types
@@ -8,16 +8,16 @@ var v: string;
for (v of [0, ""].values()) { }
>v : string
> : ^^^^^^
->[0, ""].values() : IterableIterator<string | number>
-> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
->[0, ""].values : () => IterableIterator<string | number>
-> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+>[0, ""].values() : BuiltinIterator<string | number, any, any>
+> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+>[0, ""].values : () => BuiltinIterator<string | number, any, any>
+> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
>[0, ""] : (string | number)[]
> : ^^^^^^^^^^^^^^^^^^^
>0 : 0
> : ^
>"" : ""
> : ^^
->values : () => IterableIterator<string | number>
-> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+>values : () => BuiltinIterator<string | number, any, any>
+> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
diff --git a/tests/baselines/reference/for-of13.types b/tests/baselines/reference/for-of13.types
index 6bfdc1fe849eb..42aef034f7446 100644
--- a/tests/baselines/reference/for-of13.types
+++ b/tests/baselines/reference/for-of13.types
@@ -8,14 +8,14 @@ var v: string;
for (v of [""].values()) { }
>v : string
> : ^^^^^^
->[""].values() : IterableIterator<string>
-> : ^^^^^^^^^^^^^^^^^^^^^^^^
->[""].values : () => IterableIterator<string>
-> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+>[""].values() : BuiltinIterator<string, any, any>
+> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+>[""].values : () => BuiltinIterator<string, any, any>
+> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
>[""] : string[]
> : ^^^^^^^^
>"" : ""
> : ^^
->values : () => IterableIterator<string>
-> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+>values : () => BuiltinIterator<string, any, any>
+> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
diff --git a/tests/baselines/reference/generatorReturnContextualType.symbols b/tests/baselines/reference/generatorReturnContextualType.symbols
index 276b6fd013a71..ebaa5c3f235ef 100644
--- a/tests/baselines/reference/generatorReturnContextualType.symbols
+++ b/tests/baselines/reference/generatorReturnContextualType.symbols
@@ -14,7 +14,7 @@ function* f1(): Generator<any, { x: 'x' }, any> {
function* g1(): Iterator<any, { x: 'x' }, any> {
>g1 : Symbol(g1, Decl(generatorReturnContextualType.ts, 4, 1))
->Iterator : Symbol(Iterator, Decl(lib.es2015.iterable.d.ts, --, --))
+>Iterator : Symbol(Iterator, Decl(lib.es2015.iterable.d.ts, --, --), Decl(lib.esnext.iterator.d.ts, --, --))
>x : Symbol(x, Decl(generatorReturnContextualType.ts, 6, 31))
return { x: 'x' };
diff --git a/tests/baselines/reference/generatorReturnExpressionIsChecked.symbols b/tests/baselines/reference/generatorReturnExpressionIsChecked.symbols
index 6366a75725618..976b4c3114ded 100644
--- a/tests/baselines/reference/generatorReturnExpressionIsChecked.symbols
+++ b/tests/baselines/reference/generatorReturnExpressionIsChecked.symbols
@@ -3,7 +3,7 @@
=== generatorReturnExpressionIsChecked.ts ===
function* f(): Iterator<number> {
>f : Symbol(f, Decl(generatorReturnExpressionIsChecked.ts, 0, 0))
->Iterator : Symbol(Iterator, Decl(lib.es2015.iterable.d.ts, --, --))
+>Iterator : Symbol(Iterator, Decl(lib.es2015.iterable.d.ts, --, --), Decl(lib.esnext.iterator.d.ts, --, --))
return invalid;
}
diff --git a/tests/baselines/reference/generatorReturnTypeIndirectReferenceToGlobalType.symbols b/tests/baselines/reference/generatorReturnTypeIndirectReferenceToGlobalType.symbols
index 555b7048d4104..a4fae06f89977 100644
--- a/tests/baselines/reference/generatorReturnTypeIndirectReferenceToGlobalType.symbols
+++ b/tests/baselines/reference/generatorReturnTypeIndirectReferenceToGlobalType.symbols
@@ -3,7 +3,7 @@
=== generatorReturnTypeIndirectReferenceToGlobalType.ts ===
interface I1 extends Iterator<0, 1, 2> {}
>I1 : Symbol(I1, Decl(generatorReturnTypeIndirectReferenceToGlobalType.ts, 0, 0))
->Iterator : Symbol(Iterator, Decl(lib.es2015.iterable.d.ts, --, --))
+>Iterator : Symbol(Iterator, Decl(lib.es2015.iterable.d.ts, --, --), Decl(lib.esnext.iterator.d.ts, --, --))
function* f1(): I1 {
>f1 : Symbol(f1, Decl(generatorReturnTypeIndirectReferenceToGlobalType.ts, 0, 41))
diff --git a/tests/baselines/reference/generatorYieldContextualType.types b/tests/baselines/reference/generatorYieldContextualType.types
index 70ee0b52e5cf8..f4bade2d738cc 100644
--- a/tests/baselines/reference/generatorYieldContextualType.types
+++ b/tests/baselines/reference/generatorYieldContextualType.types
@@ -1,5 +1,9 @@
//// [tests/cases/conformance/generators/generatorYieldContextualType.ts] ////
+=== Performance Stats ===
+Type Count: 1,000
+Instantiation count: 2,500
+
=== generatorYieldContextualType.ts ===
declare function f1<T, R, S>(gen: () => Generator<R, T, S>): void;
>f1 : <T, R, S>(gen: () => Generator<R, T, S>) => void
diff --git a/tests/baselines/reference/indirectGlobalSymbolPartOfObjectType.types b/tests/baselines/reference/indirectGlobalSymbolPartOfObjectType.types
index 6003f038d368e..65c655b1ea332 100644
--- a/tests/baselines/reference/indirectGlobalSymbolPartOfObjectType.types
+++ b/tests/baselines/reference/indirectGlobalSymbolPartOfObjectType.types
@@ -13,8 +13,8 @@ const Symbol = globalThis.Symbol;
> : ^^^^^^^^^^^^^^^^^
[][Symbol.iterator];
->[][Symbol.iterator] : () => IterableIterator<undefined>
-> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+>[][Symbol.iterator] : () => BuiltinIterator<undefined, any, any>
+> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
>[] : undefined[]
> : ^^^^^^^^^^^
>Symbol.iterator : unique symbol
diff --git a/tests/baselines/reference/iterableTReturnTNext(strictbuiltiniteratorreturn=false).js b/tests/baselines/reference/iterableTReturnTNext(strictbuiltiniteratorreturn=false).js
index 0c0f14988e428..b79d0bfee7fa5 100644
--- a/tests/baselines/reference/iterableTReturnTNext(strictbuiltiniteratorreturn=false).js
+++ b/tests/baselines/reference/iterableTReturnTNext(strictbuiltiniteratorreturn=false).js
@@ -37,10 +37,9 @@ class MyMap implements Map<string, number> {
get(key: string): number | undefined { return undefined; }
has(key: string): boolean { return false; }
set(key: string, value: number): this { return this; }
- entries(): IterableIterator<[string, number], BuiltinIteratorReturn> { throw new Error("Method not implemented."); }
- keys(): IterableIterator<string, BuiltinIteratorReturn> { throw new Error("Method not implemented."); }
-
- [Symbol.iterator](): IterableIterator<[string, number], BuiltinIteratorReturn> { throw new Error("Method not implemented."); }
+ entries(): BuiltinIterator<[string, number], BuiltinIteratorReturn> { throw new Error("Method not implemented."); }
+ keys(): BuiltinIterator<string, BuiltinIteratorReturn> { throw new Error("Method not implemented."); }
+ [Symbol.iterator](): BuiltinIterator<[string, number], BuiltinIteratorReturn> { throw new Error("Method not implemented."); }
// error when strictBuiltinIteratorReturn is true because values() has implicit `void` return, which isn't assignable to `undefined`
* values() {
diff --git a/tests/baselines/reference/iterableTReturnTNext(strictbuiltiniteratorreturn=false).symbols b/tests/baselines/reference/iterableTReturnTNext(strictbuiltiniteratorreturn=false).symbols
index b72ed04227de4..c1e1de41c3035 100644
--- a/tests/baselines/reference/iterableTReturnTNext(strictbuiltiniteratorreturn=false).symbols
+++ b/tests/baselines/reference/iterableTReturnTNext(strictbuiltiniteratorreturn=false).symbols
@@ -118,30 +118,30 @@ class MyMap implements Map<string, number> {
>value : Symbol(value, Decl(iterableTReturnTNext.ts, 35, 20))
>this : Symbol(MyMap, Decl(iterableTReturnTNext.ts, 21, 57))
- entries(): IterableIterator<[string, number], BuiltinIteratorReturn> { throw new Error("Method not implemented."); }
+ entries(): BuiltinIterator<[string, number], BuiltinIteratorReturn> { throw new Error("Method not implemented."); }
>entries : Symbol(MyMap.entries, Decl(iterableTReturnTNext.ts, 35, 58))
->IterableIterator : Symbol(IterableIterator, Decl(lib.es2015.iterable.d.ts, --, --))
+>BuiltinIterator : Symbol(BuiltinIterator, Decl(lib.es2015.iterable.d.ts, --, --), Decl(lib.esnext.iterator.d.ts, --, --))
>BuiltinIteratorReturn : Symbol(BuiltinIteratorReturn, Decl(lib.es2015.iterable.d.ts, --, --))
>Error : Symbol(Error, Decl(lib.es5.d.ts, --, --), Decl(lib.es5.d.ts, --, --), Decl(lib.es2022.error.d.ts, --, --))
- keys(): IterableIterator<string, BuiltinIteratorReturn> { throw new Error("Method not implemented."); }
->keys : Symbol(MyMap.keys, Decl(iterableTReturnTNext.ts, 36, 120))
->IterableIterator : Symbol(IterableIterator, Decl(lib.es2015.iterable.d.ts, --, --))
+ keys(): BuiltinIterator<string, BuiltinIteratorReturn> { throw new Error("Method not implemented."); }
+>keys : Symbol(MyMap.keys, Decl(iterableTReturnTNext.ts, 36, 119))
+>BuiltinIterator : Symbol(BuiltinIterator, Decl(lib.es2015.iterable.d.ts, --, --), Decl(lib.esnext.iterator.d.ts, --, --))
>BuiltinIteratorReturn : Symbol(BuiltinIteratorReturn, Decl(lib.es2015.iterable.d.ts, --, --))
>Error : Symbol(Error, Decl(lib.es5.d.ts, --, --), Decl(lib.es5.d.ts, --, --), Decl(lib.es2022.error.d.ts, --, --))
- [Symbol.iterator](): IterableIterator<[string, number], BuiltinIteratorReturn> { throw new Error("Method not implemented."); }
->[Symbol.iterator] : Symbol(MyMap[Symbol.iterator], Decl(iterableTReturnTNext.ts, 37, 107))
+ [Symbol.iterator](): BuiltinIterator<[string, number], BuiltinIteratorReturn> { throw new Error("Method not implemented."); }
+>[Symbol.iterator] : Symbol(MyMap[Symbol.iterator], Decl(iterableTReturnTNext.ts, 37, 106))
>Symbol.iterator : Symbol(SymbolConstructor.iterator, Decl(lib.es2015.iterable.d.ts, --, --))
>Symbol : Symbol(Symbol, Decl(lib.es5.d.ts, --, --), Decl(lib.es2015.symbol.d.ts, --, --), Decl(lib.es2015.symbol.wellknown.d.ts, --, --), Decl(lib.es2019.symbol.d.ts, --, --))
>iterator : Symbol(SymbolConstructor.iterator, Decl(lib.es2015.iterable.d.ts, --, --))
->IterableIterator : Symbol(IterableIterator, Decl(lib.es2015.iterable.d.ts, --, --))
+>BuiltinIterator : Symbol(BuiltinIterator, Decl(lib.es2015.iterable.d.ts, --, --), Decl(lib.esnext.iterator.d.ts, --, --))
>BuiltinIteratorReturn : Symbol(BuiltinIteratorReturn, Decl(lib.es2015.iterable.d.ts, --, --))
>Error : Symbol(Error, Decl(lib.es5.d.ts, --, --), Decl(lib.es5.d.ts, --, --), Decl(lib.es2022.error.d.ts, --, --))
// error when strictBuiltinIteratorReturn is true because values() has implicit `void` return, which isn't assignable to `undefined`
* values() {
->values : Symbol(MyMap.values, Decl(iterableTReturnTNext.ts, 39, 130))
+>values : Symbol(MyMap.values, Decl(iterableTReturnTNext.ts, 38, 129))
yield* this._values;
>this._values : Symbol(MyMap._values, Decl(iterableTReturnTNext.ts, 25, 36))
diff --git a/tests/baselines/reference/iterableTReturnTNext(strictbuiltiniteratorreturn=false).types b/tests/baselines/reference/iterableTReturnTNext(strictbuiltiniteratorreturn=false).types
index be54143d328ee..64293b894dba4 100644
--- a/tests/baselines/reference/iterableTReturnTNext(strictbuiltiniteratorreturn=false).types
+++ b/tests/baselines/reference/iterableTReturnTNext(strictbuiltiniteratorreturn=false).types
@@ -20,14 +20,14 @@ const r1: number = map.values().next().value; // error when strictBuiltinIterato
> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^
>map.values().next : (...[value]: [] | [any]) => IteratorResult<number, any>
> : ^^^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
->map.values() : IterableIterator<number>
-> : ^^^^^^^^^^^^^^^^^^^^^^^^
->map.values : () => IterableIterator<number>
-> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+>map.values() : BuiltinIterator<number, any, any>
+> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+>map.values : () => BuiltinIterator<number, any, any>
+> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
>map : Map<string, number>
> : ^^^^^^^^^^^^^^^^^^^
->values : () => IterableIterator<number>
-> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+>values : () => BuiltinIterator<number, any, any>
+> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
>next : (...[value]: [] | [any]) => IteratorResult<number, any>
> : ^^^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
>value : any
@@ -50,14 +50,14 @@ const r2: Next<number> = map.values().next(); // error when strictBuiltinIterato
> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^
>map.values().next : (...[value]: [] | [any]) => IteratorResult<number, any>
> : ^^^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
->map.values() : IterableIterator<number>
-> : ^^^^^^^^^^^^^^^^^^^^^^^^
->map.values : () => IterableIterator<number>
-> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+>map.values() : BuiltinIterator<number, any, any>
+> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+>map.values : () => BuiltinIterator<number, any, any>
+> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
>map : Map<string, number>
> : ^^^^^^^^^^^^^^^^^^^
->values : () => IterableIterator<number>
-> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+>values : () => BuiltinIterator<number, any, any>
+> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
>next : (...[value]: [] | [any]) => IteratorResult<number, any>
> : ^^^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
@@ -102,14 +102,14 @@ const r3: number | undefined = set.values().next().value;
> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^
>set.values().next : (...[value]: [] | [any]) => IteratorResult<number, any>
> : ^^^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
->set.values() : IterableIterator<number>
-> : ^^^^^^^^^^^^^^^^^^^^^^^^
->set.values : () => IterableIterator<number>
-> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+>set.values() : BuiltinIterator<number, any, any>
+> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+>set.values : () => BuiltinIterator<number, any, any>
+> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
>set : Set<number>
> : ^^^^^^^^^^^
->values : () => IterableIterator<number>
-> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+>values : () => BuiltinIterator<number, any, any>
+> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
>next : (...[value]: [] | [any]) => IteratorResult<number, any>
> : ^^^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
>value : any
@@ -193,9 +193,9 @@ class MyMap implements Map<string, number> {
>this : this
> : ^^^^
- entries(): IterableIterator<[string, number], BuiltinIteratorReturn> { throw new Error("Method not implemented."); }
->entries : () => IterableIterator<[string, number], BuiltinIteratorReturn>
-> : ^^^^^^
+ entries(): BuiltinIterator<[string, number], BuiltinIteratorReturn> { throw new Error("Method not implemented."); }
+>entries : () => BuiltinIterator<[string, number], BuiltinIteratorReturn>
+> : ^^^^^^
>new Error("Method not implemented.") : Error
> : ^^^^^
>Error : ErrorConstructor
@@ -203,9 +203,9 @@ class MyMap implements Map<string, number> {
>"Method not implemented." : "Method not implemented."
> : ^^^^^^^^^^^^^^^^^^^^^^^^^
- keys(): IterableIterator<string, BuiltinIteratorReturn> { throw new Error("Method not implemented."); }
->keys : () => IterableIterator<string, BuiltinIteratorReturn>
-> : ^^^^^^
+ keys(): BuiltinIterator<string, BuiltinIteratorReturn> { throw new Error("Method not implemented."); }
+>keys : () => BuiltinIterator<string, BuiltinIteratorReturn>
+> : ^^^^^^
>new Error("Method not implemented.") : Error
> : ^^^^^
>Error : ErrorConstructor
@@ -213,9 +213,9 @@ class MyMap implements Map<string, number> {
>"Method not implemented." : "Method not implemented."
> : ^^^^^^^^^^^^^^^^^^^^^^^^^
- [Symbol.iterator](): IterableIterator<[string, number], BuiltinIteratorReturn> { throw new Error("Method not implemented."); }
->[Symbol.iterator] : () => IterableIterator<[string, number], BuiltinIteratorReturn>
-> : ^^^^^^
+ [Symbol.iterator](): BuiltinIterator<[string, number], BuiltinIteratorReturn> { throw new Error("Method not implemented."); }
+>[Symbol.iterator] : () => BuiltinIterator<[string, number], BuiltinIteratorReturn>
+> : ^^^^^^
>Symbol.iterator : unique symbol
> : ^^^^^^^^^^^^^
>Symbol : SymbolConstructor
diff --git a/tests/baselines/reference/iterableTReturnTNext(strictbuiltiniteratorreturn=true).errors.txt b/tests/baselines/reference/iterableTReturnTNext(strictbuiltiniteratorreturn=true).errors.txt
index f5134dd19f0f3..4912e19f699a7 100644
--- a/tests/baselines/reference/iterableTReturnTNext(strictbuiltiniteratorreturn=true).errors.txt
+++ b/tests/baselines/reference/iterableTReturnTNext(strictbuiltiniteratorreturn=true).errors.txt
@@ -4,9 +4,9 @@ iterableTReturnTNext.ts(14,7): error TS2322: Type 'IteratorResult<number, undefi
Type 'IteratorReturnResult<undefined>' is not assignable to type 'Next<number>'.
Types of property 'value' are incompatible.
Type 'undefined' is not assignable to type 'number'.
-iterableTReturnTNext.ts(43,7): error TS2416: Property 'values' in type 'MyMap' is not assignable to the same property in base type 'Map<string, number>'.
- Type '() => Generator<number, void, any>' is not assignable to type '() => IterableIterator<number, undefined>'.
- Call signature return types 'Generator<number, void, any>' and 'IterableIterator<number, undefined>' are incompatible.
+iterableTReturnTNext.ts(42,7): error TS2416: Property 'values' in type 'MyMap' is not assignable to the same property in base type 'Map<string, number>'.
+ Type '() => Generator<number, void, any>' is not assignable to type '() => BuiltinIterator<number, undefined, any>'.
+ Call signature return types 'Generator<number, void, any>' and 'BuiltinIterator<number, undefined, any>' are incompatible.
The types returned by 'next(...)' are incompatible between these types.
Type 'IteratorResult<number, void>' is not assignable to type 'IteratorResult<number, undefined>'.
Type 'IteratorReturnResult<void>' is not assignable to type 'IteratorResult<number, undefined>'.
@@ -59,17 +59,16 @@ iterableTReturnTNext.ts(43,7): error TS2416: Property 'values' in type 'MyMap' i
get(key: string): number | undefined { return undefined; }
has(key: string): boolean { return false; }
set(key: string, value: number): this { return this; }
- entries(): IterableIterator<[string, number], BuiltinIteratorReturn> { throw new Error("Method not implemented."); }
- keys(): IterableIterator<string, BuiltinIteratorReturn> { throw new Error("Method not implemented."); }
-
- [Symbol.iterator](): IterableIterator<[string, number], BuiltinIteratorReturn> { throw new Error("Method not implemented."); }
+ entries(): BuiltinIterator<[string, number], BuiltinIteratorReturn> { throw new Error("Method not implemented."); }
+ keys(): BuiltinIterator<string, BuiltinIteratorReturn> { throw new Error("Method not implemented."); }
+ [Symbol.iterator](): BuiltinIterator<[string, number], BuiltinIteratorReturn> { throw new Error("Method not implemented."); }
// error when strictBuiltinIteratorReturn is true because values() has implicit `void` return, which isn't assignable to `undefined`
* values() {
~~~~~~
!!! error TS2416: Property 'values' in type 'MyMap' is not assignable to the same property in base type 'Map<string, number>'.
-!!! error TS2416: Type '() => Generator<number, void, any>' is not assignable to type '() => IterableIterator<number, undefined>'.
-!!! error TS2416: Call signature return types 'Generator<number, void, any>' and 'IterableIterator<number, undefined>' are incompatible.
+!!! error TS2416: Type '() => Generator<number, void, any>' is not assignable to type '() => BuiltinIterator<number, undefined, any>'.
+!!! error TS2416: Call signature return types 'Generator<number, void, any>' and 'BuiltinIterator<number, undefined, any>' are incompatible.
!!! error TS2416: The types returned by 'next(...)' are incompatible between these types.
!!! error TS2416: Type 'IteratorResult<number, void>' is not assignable to type 'IteratorResult<number, undefined>'.
!!! error TS2416: Type 'IteratorReturnResult<void>' is not assignable to type 'IteratorResult<number, undefined>'.
diff --git a/tests/baselines/reference/iterableTReturnTNext(strictbuiltiniteratorreturn=true).js b/tests/baselines/reference/iterableTReturnTNext(strictbuiltiniteratorreturn=true).js
index 0c0f14988e428..b79d0bfee7fa5 100644
--- a/tests/baselines/reference/iterableTReturnTNext(strictbuiltiniteratorreturn=true).js
+++ b/tests/baselines/reference/iterableTReturnTNext(strictbuiltiniteratorreturn=true).js
@@ -37,10 +37,9 @@ class MyMap implements Map<string, number> {
get(key: string): number | undefined { return undefined; }
has(key: string): boolean { return false; }
set(key: string, value: number): this { return this; }
- entries(): IterableIterator<[string, number], BuiltinIteratorReturn> { throw new Error("Method not implemented."); }
- keys(): IterableIterator<string, BuiltinIteratorReturn> { throw new Error("Method not implemented."); }
-
- [Symbol.iterator](): IterableIterator<[string, number], BuiltinIteratorReturn> { throw new Error("Method not implemented."); }
+ entries(): BuiltinIterator<[string, number], BuiltinIteratorReturn> { throw new Error("Method not implemented."); }
+ keys(): BuiltinIterator<string, BuiltinIteratorReturn> { throw new Error("Method not implemented."); }
+ [Symbol.iterator](): BuiltinIterator<[string, number], BuiltinIteratorReturn> { throw new Error("Method not implemented."); }
// error when strictBuiltinIteratorReturn is true because values() has implicit `void` return, which isn't assignable to `undefined`
* values() {
diff --git a/tests/baselines/reference/iterableTReturnTNext(strictbuiltiniteratorreturn=true).symbols b/tests/baselines/reference/iterableTReturnTNext(strictbuiltiniteratorreturn=true).symbols
index b72ed04227de4..c1e1de41c3035 100644
--- a/tests/baselines/reference/iterableTReturnTNext(strictbuiltiniteratorreturn=true).symbols
+++ b/tests/baselines/reference/iterableTReturnTNext(strictbuiltiniteratorreturn=true).symbols
@@ -118,30 +118,30 @@ class MyMap implements Map<string, number> {
>value : Symbol(value, Decl(iterableTReturnTNext.ts, 35, 20))
>this : Symbol(MyMap, Decl(iterableTReturnTNext.ts, 21, 57))
- entries(): IterableIterator<[string, number], BuiltinIteratorReturn> { throw new Error("Method not implemented."); }
+ entries(): BuiltinIterator<[string, number], BuiltinIteratorReturn> { throw new Error("Method not implemented."); }
>entries : Symbol(MyMap.entries, Decl(iterableTReturnTNext.ts, 35, 58))
->IterableIterator : Symbol(IterableIterator, Decl(lib.es2015.iterable.d.ts, --, --))
+>BuiltinIterator : Symbol(BuiltinIterator, Decl(lib.es2015.iterable.d.ts, --, --), Decl(lib.esnext.iterator.d.ts, --, --))
>BuiltinIteratorReturn : Symbol(BuiltinIteratorReturn, Decl(lib.es2015.iterable.d.ts, --, --))
>Error : Symbol(Error, Decl(lib.es5.d.ts, --, --), Decl(lib.es5.d.ts, --, --), Decl(lib.es2022.error.d.ts, --, --))
- keys(): IterableIterator<string, BuiltinIteratorReturn> { throw new Error("Method not implemented."); }
->keys : Symbol(MyMap.keys, Decl(iterableTReturnTNext.ts, 36, 120))
->IterableIterator : Symbol(IterableIterator, Decl(lib.es2015.iterable.d.ts, --, --))
+ keys(): BuiltinIterator<string, BuiltinIteratorReturn> { throw new Error("Method not implemented."); }
+>keys : Symbol(MyMap.keys, Decl(iterableTReturnTNext.ts, 36, 119))
+>BuiltinIterator : Symbol(BuiltinIterator, Decl(lib.es2015.iterable.d.ts, --, --), Decl(lib.esnext.iterator.d.ts, --, --))
>BuiltinIteratorReturn : Symbol(BuiltinIteratorReturn, Decl(lib.es2015.iterable.d.ts, --, --))
>Error : Symbol(Error, Decl(lib.es5.d.ts, --, --), Decl(lib.es5.d.ts, --, --), Decl(lib.es2022.error.d.ts, --, --))
- [Symbol.iterator](): IterableIterator<[string, number], BuiltinIteratorReturn> { throw new Error("Method not implemented."); }
->[Symbol.iterator] : Symbol(MyMap[Symbol.iterator], Decl(iterableTReturnTNext.ts, 37, 107))
+ [Symbol.iterator](): BuiltinIterator<[string, number], BuiltinIteratorReturn> { throw new Error("Method not implemented."); }
+>[Symbol.iterator] : Symbol(MyMap[Symbol.iterator], Decl(iterableTReturnTNext.ts, 37, 106))
>Symbol.iterator : Symbol(SymbolConstructor.iterator, Decl(lib.es2015.iterable.d.ts, --, --))
>Symbol : Symbol(Symbol, Decl(lib.es5.d.ts, --, --), Decl(lib.es2015.symbol.d.ts, --, --), Decl(lib.es2015.symbol.wellknown.d.ts, --, --), Decl(lib.es2019.symbol.d.ts, --, --))
>iterator : Symbol(SymbolConstructor.iterator, Decl(lib.es2015.iterable.d.ts, --, --))
->IterableIterator : Symbol(IterableIterator, Decl(lib.es2015.iterable.d.ts, --, --))
+>BuiltinIterator : Symbol(BuiltinIterator, Decl(lib.es2015.iterable.d.ts, --, --), Decl(lib.esnext.iterator.d.ts, --, --))
>BuiltinIteratorReturn : Symbol(BuiltinIteratorReturn, Decl(lib.es2015.iterable.d.ts, --, --))
>Error : Symbol(Error, Decl(lib.es5.d.ts, --, --), Decl(lib.es5.d.ts, --, --), Decl(lib.es2022.error.d.ts, --, --))
// error when strictBuiltinIteratorReturn is true because values() has implicit `void` return, which isn't assignable to `undefined`
* values() {
->values : Symbol(MyMap.values, Decl(iterableTReturnTNext.ts, 39, 130))
+>values : Symbol(MyMap.values, Decl(iterableTReturnTNext.ts, 38, 129))
yield* this._values;
>this._values : Symbol(MyMap._values, Decl(iterableTReturnTNext.ts, 25, 36))
diff --git a/tests/baselines/reference/iterableTReturnTNext(strictbuiltiniteratorreturn=true).types b/tests/baselines/reference/iterableTReturnTNext(strictbuiltiniteratorreturn=true).types
index a3a82d1ba855c..71a1e6da57570 100644
--- a/tests/baselines/reference/iterableTReturnTNext(strictbuiltiniteratorreturn=true).types
+++ b/tests/baselines/reference/iterableTReturnTNext(strictbuiltiniteratorreturn=true).types
@@ -21,14 +21,14 @@ const r1: number = map.values().next().value; // error when strictBuiltinIterato
> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
>map.values().next : (...[value]: [] | [any]) => IteratorResult<number, undefined>
> : ^^^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
->map.values() : IterableIterator<number, undefined>
-> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
->map.values : () => IterableIterator<number, undefined>
-> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+>map.values() : BuiltinIterator<number, undefined, any>
+> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+>map.values : () => BuiltinIterator<number, undefined, any>
+> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
>map : Map<string, number>
> : ^^^^^^^^^^^^^^^^^^^
->values : () => IterableIterator<number, undefined>
-> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+>values : () => BuiltinIterator<number, undefined, any>
+> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
>next : (...[value]: [] | [any]) => IteratorResult<number, undefined>
> : ^^^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
>value : number | undefined
@@ -51,14 +51,14 @@ const r2: Next<number> = map.values().next(); // error when strictBuiltinIterato
> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
>map.values().next : (...[value]: [] | [any]) => IteratorResult<number, undefined>
> : ^^^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
->map.values() : IterableIterator<number, undefined>
-> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
->map.values : () => IterableIterator<number, undefined>
-> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+>map.values() : BuiltinIterator<number, undefined, any>
+> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+>map.values : () => BuiltinIterator<number, undefined, any>
+> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
>map : Map<string, number>
> : ^^^^^^^^^^^^^^^^^^^
->values : () => IterableIterator<number, undefined>
-> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+>values : () => BuiltinIterator<number, undefined, any>
+> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
>next : (...[value]: [] | [any]) => IteratorResult<number, undefined>
> : ^^^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
@@ -107,14 +107,14 @@ const r3: number | undefined = set.values().next().value;
> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
>set.values().next : (...[value]: [] | [any]) => IteratorResult<number, undefined>
> : ^^^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
->set.values() : IterableIterator<number, undefined>
-> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
->set.values : () => IterableIterator<number, undefined>
-> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+>set.values() : BuiltinIterator<number, undefined, any>
+> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+>set.values : () => BuiltinIterator<number, undefined, any>
+> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
>set : Set<number>
> : ^^^^^^^^^^^
->values : () => IterableIterator<number, undefined>
-> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+>values : () => BuiltinIterator<number, undefined, any>
+> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
>next : (...[value]: [] | [any]) => IteratorResult<number, undefined>
> : ^^^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
>value : number | undefined
@@ -199,9 +199,9 @@ class MyMap implements Map<string, number> {
>this : this
> : ^^^^
- entries(): IterableIterator<[string, number], BuiltinIteratorReturn> { throw new Error("Method not implemented."); }
->entries : () => IterableIterator<[string, number], BuiltinIteratorReturn>
-> : ^^^^^^
+ entries(): BuiltinIterator<[string, number], BuiltinIteratorReturn> { throw new Error("Method not implemented."); }
+>entries : () => BuiltinIterator<[string, number], BuiltinIteratorReturn>
+> : ^^^^^^
>new Error("Method not implemented.") : Error
> : ^^^^^
>Error : ErrorConstructor
@@ -209,9 +209,9 @@ class MyMap implements Map<string, number> {
>"Method not implemented." : "Method not implemented."
> : ^^^^^^^^^^^^^^^^^^^^^^^^^
- keys(): IterableIterator<string, BuiltinIteratorReturn> { throw new Error("Method not implemented."); }
->keys : () => IterableIterator<string, BuiltinIteratorReturn>
-> : ^^^^^^
+ keys(): BuiltinIterator<string, BuiltinIteratorReturn> { throw new Error("Method not implemented."); }
+>keys : () => BuiltinIterator<string, BuiltinIteratorReturn>
+> : ^^^^^^
>new Error("Method not implemented.") : Error
> : ^^^^^
>Error : ErrorConstructor
@@ -219,9 +219,9 @@ class MyMap implements Map<string, number> {
>"Method not implemented." : "Method not implemented."
> : ^^^^^^^^^^^^^^^^^^^^^^^^^
- [Symbol.iterator](): IterableIterator<[string, number], BuiltinIteratorReturn> { throw new Error("Method not implemented."); }
->[Symbol.iterator] : () => IterableIterator<[string, number], BuiltinIteratorReturn>
-> : ^^^^^^
+ [Symbol.iterator](): BuiltinIterator<[string, number], BuiltinIteratorReturn> { throw new Error("Method not implemented."); }
+>[Symbol.iterator] : () => BuiltinIterator<[string, number], BuiltinIteratorReturn>
+> : ^^^^^^
>Symbol.iterator : unique symbol
> : ^^^^^^^^^^^^^
>Symbol : SymbolConstructor
diff --git a/tests/baselines/reference/libCompileChecks.types b/tests/baselines/reference/libCompileChecks.types
index d2715dfaf6840..6015f4c511769 100644
--- a/tests/baselines/reference/libCompileChecks.types
+++ b/tests/baselines/reference/libCompileChecks.types
@@ -1,9 +1,9 @@
//// [tests/cases/compiler/libCompileChecks.ts] ////
=== Performance Stats ===
-Assignability cache: 2,500
+Assignability cache: 5,000
Type Count: 10,000
-Instantiation count: 2,500
+Instantiation count: 5,000
=== libCompileChecks.ts ===
diff --git a/tests/baselines/reference/mapGroupBy.types b/tests/baselines/reference/mapGroupBy.types
index 090af0f19de64..dde7f5accd85e 100644
--- a/tests/baselines/reference/mapGroupBy.types
+++ b/tests/baselines/reference/mapGroupBy.types
@@ -1,5 +1,9 @@
//// [tests/cases/compiler/mapGroupBy.ts] ////
+=== Performance Stats ===
+Type Count: 1,000
+Instantiation count: 2,500
+
=== mapGroupBy.ts ===
const basic = Map.groupBy([0, 2, 8], x => x < 5 ? 'small' : 'large');
>basic : Map<"small" | "large", number[]>
diff --git a/tests/baselines/reference/mappedTypeWithAsClauseAndLateBoundProperty.errors.txt b/tests/baselines/reference/mappedTypeWithAsClauseAndLateBoundProperty.errors.txt
index 380aa151c2c22..bca4e124b9ed3 100644
--- a/tests/baselines/reference/mappedTypeWithAsClauseAndLateBoundProperty.errors.txt
+++ b/tests/baselines/reference/mappedTypeWithAsClauseAndLateBoundProperty.errors.txt
@@ -1,4 +1,4 @@
-mappedTypeWithAsClauseAndLateBoundProperty.ts(3,1): error TS2741: Property 'length' is missing in type '{ [x: number]: number; toString: () => string; toLocaleString: { (): string; (locales: string | string[], options?: NumberFormatOptions & DateTimeFormatOptions): string; }; pop: () => number; push: (...items: number[]) => number; concat: { (...items: ConcatArray<number>[]): number[]; (...items: (number | ConcatArray<number>)[]): number[]; }; join: (separator?: string) => string; reverse: () => number[]; shift: () => number; slice: (start?: number, end?: number) => number[]; sort: (compareFn?: (a: number, b: number) => number) => number[]; splice: { (start: number, deleteCount?: number): number[]; (start: number, deleteCount: number, ...items: number[]): number[]; }; unshift: (...items: number[]) => number; indexOf: (searchElement: number, fromIndex?: number) => number; lastIndexOf: (searchElement: number, fromIndex?: number) => number; every: { <S extends number>(predicate: (value: number, index: number, array: number[]) => value is S, thisArg?: any): this is S[]; (predicate: (value: number, index: number, array: number[]) => unknown, thisArg?: any): boolean; }; some: (predicate: (value: number, index: number, array: number[]) => unknown, thisArg?: any) => boolean; forEach: (callbackfn: (value: number, index: number, array: number[]) => void, thisArg?: any) => void; map: <U>(callbackfn: (value: number, index: number, array: number[]) => U, thisArg?: any) => U[]; filter: { <S extends number>(predicate: (value: number, index: number, array: number[]) => value is S, thisArg?: any): S[]; (predicate: (value: number, index: number, array: number[]) => unknown, thisArg?: any): number[]; }; reduce: { (callbackfn: (previousValue: number, currentValue: number, currentIndex: number, array: number[]) => number): number; (callbackfn: (previousValue: number, currentValue: number, currentIndex: number, array: number[]) => number, initialValue: number): number; <U>(callbackfn: (previousValue: U, currentValue: number, currentIndex: number, array: number[]) => U, initialValue: U): U; }; reduceRight: { (callbackfn: (previousValue: number, currentValue: number, currentIndex: number, array: number[]) => number): number; (callbackfn: (previousValue: number, currentValue: number, currentIndex: number, array: number[]) => number, initialValue: number): number; <U>(callbackfn: (previousValue: U, currentValue: number, currentIndex: number, array: number[]) => U, initialValue: U): U; }; find: { <S extends number>(predicate: (value: number, index: number, obj: number[]) => value is S, thisArg?: any): S; (predicate: (value: number, index: number, obj: number[]) => unknown, thisArg?: any): number; }; findIndex: (predicate: (value: number, index: number, obj: number[]) => unknown, thisArg?: any) => number; fill: (value: number, start?: number, end?: number) => number[]; copyWithin: (target: number, start: number, end?: number) => number[]; entries: () => IterableIterator<[number, number]>; keys: () => IterableIterator<number>; values: () => IterableIterator<number>; includes: (searchElement: number, fromIndex?: number) => boolean; flatMap: <U, This = undefined>(callback: (this: This, value: number, index: number, array: number[]) => U | readonly U[], thisArg?: This) => U[]; flat: <A, D extends number = 1>(this: A, depth?: D) => FlatArray<A, D>[]; [Symbol.iterator]: () => IterableIterator<number>; readonly [Symbol.unscopables]: { [x: number]: boolean; length?: boolean; toString?: boolean; toLocaleString?: boolean; pop?: boolean; push?: boolean; concat?: boolean; join?: boolean; reverse?: boolean; shift?: boolean; slice?: boolean; sort?: boolean; splice?: boolean; unshift?: boolean; indexOf?: boolean; lastIndexOf?: boolean; every?: boolean; some?: boolean; forEach?: boolean; map?: boolean; filter?: boolean; reduce?: boolean; reduceRight?: boolean; find?: boolean; findIndex?: boolean; fill?: boolean; copyWithin?: boolean; entries?: boolean; keys?: boolean; values?: boolean; includes?: boolean; flatMap?: boolean; flat?: boolean; [Symbol.iterator]?: boolean; readonly [Symbol.unscopables]?: boolean; }; }' but required in type 'number[]'.
+mappedTypeWithAsClauseAndLateBoundProperty.ts(3,1): error TS2741: Property 'length' is missing in type '{ [x: number]: number; toString: () => string; toLocaleString: { (): string; (locales: string | string[], options?: NumberFormatOptions & DateTimeFormatOptions): string; }; pop: () => number; push: (...items: number[]) => number; concat: { (...items: ConcatArray<number>[]): number[]; (...items: (number | ConcatArray<number>)[]): number[]; }; join: (separator?: string) => string; reverse: () => number[]; shift: () => number; slice: (start?: number, end?: number) => number[]; sort: (compareFn?: (a: number, b: number) => number) => number[]; splice: { (start: number, deleteCount?: number): number[]; (start: number, deleteCount: number, ...items: number[]): number[]; }; unshift: (...items: number[]) => number; indexOf: (searchElement: number, fromIndex?: number) => number; lastIndexOf: (searchElement: number, fromIndex?: number) => number; every: { <S extends number>(predicate: (value: number, index: number, array: number[]) => value is S, thisArg?: any): this is S[]; (predicate: (value: number, index: number, array: number[]) => unknown, thisArg?: any): boolean; }; some: (predicate: (value: number, index: number, array: number[]) => unknown, thisArg?: any) => boolean; forEach: (callbackfn: (value: number, index: number, array: number[]) => void, thisArg?: any) => void; map: <U>(callbackfn: (value: number, index: number, array: number[]) => U, thisArg?: any) => U[]; filter: { <S extends number>(predicate: (value: number, index: number, array: number[]) => value is S, thisArg?: any): S[]; (predicate: (value: number, index: number, array: number[]) => unknown, thisArg?: any): number[]; }; reduce: { (callbackfn: (previousValue: number, currentValue: number, currentIndex: number, array: number[]) => number): number; (callbackfn: (previousValue: number, currentValue: number, currentIndex: number, array: number[]) => number, initialValue: number): number; <U>(callbackfn: (previousValue: U, currentValue: number, currentIndex: number, array: number[]) => U, initialValue: U): U; }; reduceRight: { (callbackfn: (previousValue: number, currentValue: number, currentIndex: number, array: number[]) => number): number; (callbackfn: (previousValue: number, currentValue: number, currentIndex: number, array: number[]) => number, initialValue: number): number; <U>(callbackfn: (previousValue: U, currentValue: number, currentIndex: number, array: number[]) => U, initialValue: U): U; }; find: { <S extends number>(predicate: (value: number, index: number, obj: number[]) => value is S, thisArg?: any): S; (predicate: (value: number, index: number, obj: number[]) => unknown, thisArg?: any): number; }; findIndex: (predicate: (value: number, index: number, obj: number[]) => unknown, thisArg?: any) => number; fill: (value: number, start?: number, end?: number) => number[]; copyWithin: (target: number, start: number, end?: number) => number[]; entries: () => BuiltinIterator<[number, number], any, any>; keys: () => BuiltinIterator<number, any, any>; values: () => BuiltinIterator<number, any, any>; includes: (searchElement: number, fromIndex?: number) => boolean; flatMap: <U, This = undefined>(callback: (this: This, value: number, index: number, array: number[]) => U | readonly U[], thisArg?: This) => U[]; flat: <A, D extends number = 1>(this: A, depth?: D) => FlatArray<A, D>[]; [Symbol.iterator]: () => BuiltinIterator<number, any, any>; readonly [Symbol.unscopables]: { [x: number]: boolean; length?: boolean; toString?: boolean; toLocaleString?: boolean; pop?: boolean; push?: boolean; concat?: boolean; join?: boolean; reverse?: boolean; shift?: boolean; slice?: boolean; sort?: boolean; splice?: boolean; unshift?: boolean; indexOf?: boolean; lastIndexOf?: boolean; every?: boolean; some?: boolean; forEach?: boolean; map?: boolean; filter?: boolean; reduce?: boolean; reduceRight?: boolean; find?: boolean; findIndex?: boolean; fill?: boolean; copyWithin?: boolean; entries?: boolean; keys?: boolean; values?: boolean; includes?: boolean; flatMap?: boolean; flat?: boolean; [Symbol.iterator]?: boolean; readonly [Symbol.unscopables]?: boolean; }; }' but required in type 'number[]'.
==== mappedTypeWithAsClauseAndLateBoundProperty.ts (1 errors) ====
@@ -6,6 +6,6 @@ mappedTypeWithAsClauseAndLateBoundProperty.ts(3,1): error TS2741: Property 'leng
declare let src2: { [K in keyof number[] as Exclude<K, "length">]: (number[])[K] };
tgt2 = src2; // Should error
~~~~
-!!! error TS2741: Property 'length' is missing in type '{ [x: number]: number; toString: () => string; toLocaleString: { (): string; (locales: string | string[], options?: NumberFormatOptions & DateTimeFormatOptions): string; }; pop: () => number; push: (...items: number[]) => number; concat: { (...items: ConcatArray<number>[]): number[]; (...items: (number | ConcatArray<number>)[]): number[]; }; join: (separator?: string) => string; reverse: () => number[]; shift: () => number; slice: (start?: number, end?: number) => number[]; sort: (compareFn?: (a: number, b: number) => number) => number[]; splice: { (start: number, deleteCount?: number): number[]; (start: number, deleteCount: number, ...items: number[]): number[]; }; unshift: (...items: number[]) => number; indexOf: (searchElement: number, fromIndex?: number) => number; lastIndexOf: (searchElement: number, fromIndex?: number) => number; every: { <S extends number>(predicate: (value: number, index: number, array: number[]) => value is S, thisArg?: any): this is S[]; (predicate: (value: number, index: number, array: number[]) => unknown, thisArg?: any): boolean; }; some: (predicate: (value: number, index: number, array: number[]) => unknown, thisArg?: any) => boolean; forEach: (callbackfn: (value: number, index: number, array: number[]) => void, thisArg?: any) => void; map: <U>(callbackfn: (value: number, index: number, array: number[]) => U, thisArg?: any) => U[]; filter: { <S extends number>(predicate: (value: number, index: number, array: number[]) => value is S, thisArg?: any): S[]; (predicate: (value: number, index: number, array: number[]) => unknown, thisArg?: any): number[]; }; reduce: { (callbackfn: (previousValue: number, currentValue: number, currentIndex: number, array: number[]) => number): number; (callbackfn: (previousValue: number, currentValue: number, currentIndex: number, array: number[]) => number, initialValue: number): number; <U>(callbackfn: (previousValue: U, currentValue: number, currentIndex: number, array: number[]) => U, initialValue: U): U; }; reduceRight: { (callbackfn: (previousValue: number, currentValue: number, currentIndex: number, array: number[]) => number): number; (callbackfn: (previousValue: number, currentValue: number, currentIndex: number, array: number[]) => number, initialValue: number): number; <U>(callbackfn: (previousValue: U, currentValue: number, currentIndex: number, array: number[]) => U, initialValue: U): U; }; find: { <S extends number>(predicate: (value: number, index: number, obj: number[]) => value is S, thisArg?: any): S; (predicate: (value: number, index: number, obj: number[]) => unknown, thisArg?: any): number; }; findIndex: (predicate: (value: number, index: number, obj: number[]) => unknown, thisArg?: any) => number; fill: (value: number, start?: number, end?: number) => number[]; copyWithin: (target: number, start: number, end?: number) => number[]; entries: () => IterableIterator<[number, number]>; keys: () => IterableIterator<number>; values: () => IterableIterator<number>; includes: (searchElement: number, fromIndex?: number) => boolean; flatMap: <U, This = undefined>(callback: (this: This, value: number, index: number, array: number[]) => U | readonly U[], thisArg?: This) => U[]; flat: <A, D extends number = 1>(this: A, depth?: D) => FlatArray<A, D>[]; [Symbol.iterator]: () => IterableIterator<number>; readonly [Symbol.unscopables]: { [x: number]: boolean; length?: boolean; toString?: boolean; toLocaleString?: boolean; pop?: boolean; push?: boolean; concat?: boolean; join?: boolean; reverse?: boolean; shift?: boolean; slice?: boolean; sort?: boolean; splice?: boolean; unshift?: boolean; indexOf?: boolean; lastIndexOf?: boolean; every?: boolean; some?: boolean; forEach?: boolean; map?: boolean; filter?: boolean; reduce?: boolean; reduceRight?: boolean; find?: boolean; findIndex?: boolean; fill?: boolean; copyWithin?: boolean; entries?: boolean; keys?: boolean; values?: boolean; includes?: boolean; flatMap?: boolean; flat?: boolean; [Symbol.iterator]?: boolean; readonly [Symbol.unscopables]?: boolean; }; }' but required in type 'number[]'.
+!!! error TS2741: Property 'length' is missing in type '{ [x: number]: number; toString: () => string; toLocaleString: { (): string; (locales: string | string[], options?: NumberFormatOptions & DateTimeFormatOptions): string; }; pop: () => number; push: (...items: number[]) => number; concat: { (...items: ConcatArray<number>[]): number[]; (...items: (number | ConcatArray<number>)[]): number[]; }; join: (separator?: string) => string; reverse: () => number[]; shift: () => number; slice: (start?: number, end?: number) => number[]; sort: (compareFn?: (a: number, b: number) => number) => number[]; splice: { (start: number, deleteCount?: number): number[]; (start: number, deleteCount: number, ...items: number[]): number[]; }; unshift: (...items: number[]) => number; indexOf: (searchElement: number, fromIndex?: number) => number; lastIndexOf: (searchElement: number, fromIndex?: number) => number; every: { <S extends number>(predicate: (value: number, index: number, array: number[]) => value is S, thisArg?: any): this is S[]; (predicate: (value: number, index: number, array: number[]) => unknown, thisArg?: any): boolean; }; some: (predicate: (value: number, index: number, array: number[]) => unknown, thisArg?: any) => boolean; forEach: (callbackfn: (value: number, index: number, array: number[]) => void, thisArg?: any) => void; map: <U>(callbackfn: (value: number, index: number, array: number[]) => U, thisArg?: any) => U[]; filter: { <S extends number>(predicate: (value: number, index: number, array: number[]) => value is S, thisArg?: any): S[]; (predicate: (value: number, index: number, array: number[]) => unknown, thisArg?: any): number[]; }; reduce: { (callbackfn: (previousValue: number, currentValue: number, currentIndex: number, array: number[]) => number): number; (callbackfn: (previousValue: number, currentValue: number, currentIndex: number, array: number[]) => number, initialValue: number): number; <U>(callbackfn: (previousValue: U, currentValue: number, currentIndex: number, array: number[]) => U, initialValue: U): U; }; reduceRight: { (callbackfn: (previousValue: number, currentValue: number, currentIndex: number, array: number[]) => number): number; (callbackfn: (previousValue: number, currentValue: number, currentIndex: number, array: number[]) => number, initialValue: number): number; <U>(callbackfn: (previousValue: U, currentValue: number, currentIndex: number, array: number[]) => U, initialValue: U): U; }; find: { <S extends number>(predicate: (value: number, index: number, obj: number[]) => value is S, thisArg?: any): S; (predicate: (value: number, index: number, obj: number[]) => unknown, thisArg?: any): number; }; findIndex: (predicate: (value: number, index: number, obj: number[]) => unknown, thisArg?: any) => number; fill: (value: number, start?: number, end?: number) => number[]; copyWithin: (target: number, start: number, end?: number) => number[]; entries: () => BuiltinIterator<[number, number], any, any>; keys: () => BuiltinIterator<number, any, any>; values: () => BuiltinIterator<number, any, any>; includes: (searchElement: number, fromIndex?: number) => boolean; flatMap: <U, This = undefined>(callback: (this: This, value: number, index: number, array: number[]) => U | readonly U[], thisArg?: This) => U[]; flat: <A, D extends number = 1>(this: A, depth?: D) => FlatArray<A, D>[]; [Symbol.iterator]: () => BuiltinIterator<number, any, any>; readonly [Symbol.unscopables]: { [x: number]: boolean; length?: boolean; toString?: boolean; toLocaleString?: boolean; pop?: boolean; push?: boolean; concat?: boolean; join?: boolean; reverse?: boolean; shift?: boolean; slice?: boolean; sort?: boolean; splice?: boolean; unshift?: boolean; indexOf?: boolean; lastIndexOf?: boolean; every?: boolean; some?: boolean; forEach?: boolean; map?: boolean; filter?: boolean; reduce?: boolean; reduceRight?: boolean; find?: boolean; findIndex?: boolean; fill?: boolean; copyWithin?: boolean; entries?: boolean; keys?: boolean; values?: boolean; includes?: boolean; flatMap?: boolean; flat?: boolean; [Symbol.iterator]?: boolean; readonly [Symbol.unscopables]?: boolean; }; }' but required in type 'number[]'.
!!! related TS2728 lib.es5.d.ts:--:--: 'length' is declared here.
\ No newline at end of file
diff --git a/tests/baselines/reference/mappedTypeWithAsClauseAndLateBoundProperty.types b/tests/baselines/reference/mappedTypeWithAsClauseAndLateBoundProperty.types
index b64ece233e183..7caab51892d4f 100644
--- a/tests/baselines/reference/mappedTypeWithAsClauseAndLateBoundProperty.types
+++ b/tests/baselines/reference/mappedTypeWithAsClauseAndLateBoundProperty.types
@@ -6,14 +6,14 @@ declare let tgt2: number[];
> : ^^^^^^^^
declare let src2: { [K in keyof number[] as Exclude<K, "length">]: (number[])[K] };
->src2 : { [x: number]: number; toString: () => string; toLocaleString: { (): string; (locales: string | string[], options?: Intl.NumberFormatOptions & Intl.DateTimeFormatOptions): string; }; pop: () => number; push: (...items: number[]) => number; concat: { (...items: ConcatArray<number>[]): number[]; (...items: (number | ConcatArray<number>)[]): number[]; }; join: (separator?: string) => string; reverse: () => number[]; shift: () => number; slice: (start?: number, end?: number) => number[]; sort: (compareFn?: (a: number, b: number) => number) => number[]; splice: { (start: number, deleteCount?: number): number[]; (start: number, deleteCount: number, ...items: number[]): number[]; }; unshift: (...items: number[]) => number; indexOf: (searchElement: number, fromIndex?: number) => number; lastIndexOf: (searchElement: number, fromIndex?: number) => number; every: { <S extends number>(predicate: (value: number, index: number, array: number[]) => value is S, thisArg?: any): this is S[]; (predicate: (value: number, index: number, array: number[]) => unknown, thisArg?: any): boolean; }; some: (predicate: (value: number, index: number, array: number[]) => unknown, thisArg?: any) => boolean; forEach: (callbackfn: (value: number, index: number, array: number[]) => void, thisArg?: any) => void; map: <U>(callbackfn: (value: number, index: number, array: number[]) => U, thisArg?: any) => U[]; filter: { <S extends number>(predicate: (value: number, index: number, array: number[]) => value is S, thisArg?: any): S[]; (predicate: (value: number, index: number, array: number[]) => unknown, thisArg?: any): number[]; }; reduce: { (callbackfn: (previousValue: number, currentValue: number, currentIndex: number, array: number[]) => number): number; (callbackfn: (previousValue: number, currentValue: number, currentIndex: number, array: number[]) => number, initialValue: number): number; <U>(callbackfn: (previousValue: U, currentValue: number, currentIndex: number, array: number[]) => U, initialValue: U): U; }; reduceRight: { (callbackfn: (previousValue: number, currentValue: number, currentIndex: number, array: number[]) => number): number; (callbackfn: (previousValue: number, currentValue: number, currentIndex: number, array: number[]) => number, initialValue: number): number; <U>(callbackfn: (previousValue: U, currentValue: number, currentIndex: number, array: number[]) => U, initialValue: U): U; }; find: { <S extends number>(predicate: (value: number, index: number, obj: number[]) => value is S, thisArg?: any): S; (predicate: (value: number, index: number, obj: number[]) => unknown, thisArg?: any): number; }; findIndex: (predicate: (value: number, index: number, obj: number[]) => unknown, thisArg?: any) => number; fill: (value: number, start?: number, end?: number) => number[]; copyWithin: (target: number, start: number, end?: number) => number[]; entries: () => IterableIterator<[number, number]>; keys: () => IterableIterator<number, BuiltinIteratorReturn>; values: () => IterableIterator<number>; includes: (searchElement: number, fromIndex?: number) => boolean; flatMap: <U, This = undefined>(callback: (this: This, value: number, index: number, array: number[]) => U | readonly U[], thisArg?: This) => U[]; flat: <A, D extends number = 1>(this: A, depth?: D) => FlatArray<A, D>[]; [Symbol.iterator]: () => IterableIterator<number>; readonly [Symbol.unscopables]: { [x: number]: boolean; length?: boolean; toString?: boolean; toLocaleString?: boolean; pop?: boolean; push?: boolean; concat?: boolean; join?: boolean; reverse?: boolean; shift?: boolean; slice?: boolean; sort?: boolean; splice?: boolean; unshift?: boolean; indexOf?: boolean; lastIndexOf?: boolean; every?: boolean; some?: boolean; forEach?: boolean; map?: boolean; filter?: boolean; reduce?: boolean; reduceRight?: boolean; find?: boolean; findIndex?: boolean; fill?: boolean; copyWithin?: boolean; entries?: boolean; keys?: boolean; values?: boolean; includes?: boolean; flatMap?: boolean; flat?: boolean; [Symbol.iterator]?: boolean; readonly [Symbol.unscopables]?: boolean; }; }
-> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^^^^^^^^^^ ^^^ ^^ ^^ ^^^ ^^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^ ^^^^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^ ^^ ^^^ ^^^^^^^^^^^^^^^^^^^^^^ ^^^^ ^^^^^^^^^^ ^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^ ^^ ^^^ ^^^^^^^^^^^^^^ ^^ ^^ ^^ ^^^^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^ ^^^^^^^^^^^^ ^^^^^^^^^^ ^^^ ^^^^^ ^^^^^^^^^^^^^^^^ ^^^^^^^^^^ ^^^ ^^^^^ ^^^^^^^^^^^^ ^^^^^^^^^^^^^^^^^ ^^^ ^^^^^^^^^^ ^^ ^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^ ^^^ ^ ^^^ ^^^ ^^^^^^^^^^ ^^ ^^ ^^^^^^^^^^^^^^^ ^^ ^^^ ^^^ ^^^^^^^^^^^^ ^^^ ^^^^^^^^^^ ^^ ^^ ^^^^^^^^^^^^^^^ ^^ ^^^ ^^^^^ ^^^^^^^^^^^^ ^^^ ^^^^^^^^^^ ^^ ^^ ^^^^^^^^^^^^^^^ ^^ ^^^ ^^^^^ ^^^^^^^^ ^^ ^^^ ^^^^^^^^^^ ^^ ^^ ^^^^^^^^^^^^^^^^^^ ^^^ ^^^^^^^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^^^ ^^^ ^^^^^^^^^^ ^^ ^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^ ^^^^^^^^^ ^^^ ^^^^^^^^^^ ^^ ^^ ^^^^^^^^^^^^^^^ ^^ ^^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^ ^^^^^^^^^^ ^^^^^^^^^^ ^^ ^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^ ^^^^^^^^^^ ^^^^^^^^^^ ^^ ^^ ^^^^^^^^^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^^^^^^ ^^ ^^^ ^^^^^ ^^^^^^^^^^ ^^ ^^ ^^^^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^ ^^^^^^^^^^ ^^^^^^^^^^ ^^ ^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^ ^^^^^^^^^^ ^^^^^^^^^^ ^^ ^^ ^^^^^^^^^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^^^^^^ ^^ ^^^ ^^^^^ ^^^^^^^^^^ ^^ ^^ ^^^^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^^^ ^^^ ^^^^^^^^^^ ^^ ^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^ ^^^^^^^ ^^^ ^^^^^^^^^^ ^^ ^^ ^^^^^^^^^^^^^^^ ^^ ^^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^ ^^^^^^^^^^ ^^ ^^ ^^^^^^^^^^^^^^^ ^^ ^^^ ^^^^^ ^^^^^^^^^ ^^^^^^^^^^ ^^^ ^^ ^^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^ ^^ ^^ ^^ ^^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^^^^^^^^ ^^^ ^^^^^ ^^^^^^^^^^^^ ^^ ^^^^^^^^^^^^^^ ^^^ ^^^^^^^^ ^^^^^^^^^^ ^^ ^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^^^^^^^^^^ ^^ ^^^^^^^^^ ^^^^^^ ^^^^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+>src2 : { [x: number]: number; toString: () => string; toLocaleString: { (): string; (locales: string | string[], options?: Intl.NumberFormatOptions & Intl.DateTimeFormatOptions): string; }; pop: () => number; push: (...items: number[]) => number; concat: { (...items: ConcatArray<number>[]): number[]; (...items: (number | ConcatArray<number>)[]): number[]; }; join: (separator?: string) => string; reverse: () => number[]; shift: () => number; slice: (start?: number, end?: number) => number[]; sort: (compareFn?: (a: number, b: number) => number) => number[]; splice: { (start: number, deleteCount?: number): number[]; (start: number, deleteCount: number, ...items: number[]): number[]; }; unshift: (...items: number[]) => number; indexOf: (searchElement: number, fromIndex?: number) => number; lastIndexOf: (searchElement: number, fromIndex?: number) => number; every: { <S extends number>(predicate: (value: number, index: number, array: number[]) => value is S, thisArg?: any): this is S[]; (predicate: (value: number, index: number, array: number[]) => unknown, thisArg?: any): boolean; }; some: (predicate: (value: number, index: number, array: number[]) => unknown, thisArg?: any) => boolean; forEach: (callbackfn: (value: number, index: number, array: number[]) => void, thisArg?: any) => void; map: <U>(callbackfn: (value: number, index: number, array: number[]) => U, thisArg?: any) => U[]; filter: { <S extends number>(predicate: (value: number, index: number, array: number[]) => value is S, thisArg?: any): S[]; (predicate: (value: number, index: number, array: number[]) => unknown, thisArg?: any): number[]; }; reduce: { (callbackfn: (previousValue: number, currentValue: number, currentIndex: number, array: number[]) => number): number; (callbackfn: (previousValue: number, currentValue: number, currentIndex: number, array: number[]) => number, initialValue: number): number; <U>(callbackfn: (previousValue: U, currentValue: number, currentIndex: number, array: number[]) => U, initialValue: U): U; }; reduceRight: { (callbackfn: (previousValue: number, currentValue: number, currentIndex: number, array: number[]) => number): number; (callbackfn: (previousValue: number, currentValue: number, currentIndex: number, array: number[]) => number, initialValue: number): number; <U>(callbackfn: (previousValue: U, currentValue: number, currentIndex: number, array: number[]) => U, initialValue: U): U; }; find: { <S extends number>(predicate: (value: number, index: number, obj: number[]) => value is S, thisArg?: any): S; (predicate: (value: number, index: number, obj: number[]) => unknown, thisArg?: any): number; }; findIndex: (predicate: (value: number, index: number, obj: number[]) => unknown, thisArg?: any) => number; fill: (value: number, start?: number, end?: number) => number[]; copyWithin: (target: number, start: number, end?: number) => number[]; entries: () => BuiltinIterator<[number, number], any, any>; keys: () => BuiltinIterator<number, BuiltinIteratorReturn>; values: () => BuiltinIterator<number, any, any>; includes: (searchElement: number, fromIndex?: number) => boolean; flatMap: <U, This = undefined>(callback: (this: This, value: number, index: number, array: number[]) => U | readonly U[], thisArg?: This) => U[]; flat: <A, D extends number = 1>(this: A, depth?: D) => FlatArray<A, D>[]; [Symbol.iterator]: () => BuiltinIterator<number, any, any>; readonly [Symbol.unscopables]: { [x: number]: boolean; length?: boolean; toString?: boolean; toLocaleString?: boolean; pop?: boolean; push?: boolean; concat?: boolean; join?: boolean; reverse?: boolean; shift?: boolean; slice?: boolean; sort?: boolean; splice?: boolean; unshift?: boolean; indexOf?: boolean; lastIndexOf?: boolean; every?: boolean; some?: boolean; forEach?: boolean; map?: boolean; filter?: boolean; reduce?: boolean; reduceRight?: boolean; find?: boolean; findIndex?: boolean; fill?: boolean; copyWithin?: boolean; entries?: boolean; keys?: boolean; values?: boolean; includes?: boolean; flatMap?: boolean; flat?: boolean; [Symbol.iterator]?: boolean; readonly [Symbol.unscopables]?: boolean; }; }
+> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^^^^^^^^^^ ^^^ ^^ ^^ ^^^ ^^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^ ^^^^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^ ^^ ^^^ ^^^^^^^^^^^^^^^^^^^^^^ ^^^^ ^^^^^^^^^^ ^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^ ^^ ^^^ ^^^^^^^^^^^^^^ ^^ ^^ ^^ ^^^^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^ ^^^^^^^^^^^^ ^^^^^^^^^^ ^^^ ^^^^^ ^^^^^^^^^^^^^^^^ ^^^^^^^^^^ ^^^ ^^^^^ ^^^^^^^^^^^^ ^^^^^^^^^^^^^^^^^ ^^^ ^^^^^^^^^^ ^^ ^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^ ^^^ ^ ^^^ ^^^ ^^^^^^^^^^ ^^ ^^ ^^^^^^^^^^^^^^^ ^^ ^^^ ^^^ ^^^^^^^^^^^^ ^^^ ^^^^^^^^^^ ^^ ^^ ^^^^^^^^^^^^^^^ ^^ ^^^ ^^^^^ ^^^^^^^^^^^^ ^^^ ^^^^^^^^^^ ^^ ^^ ^^^^^^^^^^^^^^^ ^^ ^^^ ^^^^^ ^^^^^^^^ ^^ ^^^ ^^^^^^^^^^ ^^ ^^ ^^^^^^^^^^^^^^^^^^ ^^^ ^^^^^^^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^^^ ^^^ ^^^^^^^^^^ ^^ ^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^ ^^^^^^^^^ ^^^ ^^^^^^^^^^ ^^ ^^ ^^^^^^^^^^^^^^^ ^^ ^^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^ ^^^^^^^^^^ ^^^^^^^^^^ ^^ ^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^ ^^^^^^^^^^ ^^^^^^^^^^ ^^ ^^ ^^^^^^^^^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^^^^^^ ^^ ^^^ ^^^^^ ^^^^^^^^^^ ^^ ^^ ^^^^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^ ^^^^^^^^^^ ^^^^^^^^^^ ^^ ^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^ ^^^^^^^^^^ ^^^^^^^^^^ ^^ ^^ ^^^^^^^^^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^^^^^^ ^^ ^^^ ^^^^^ ^^^^^^^^^^ ^^ ^^ ^^^^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^^^ ^^^ ^^^^^^^^^^ ^^ ^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^ ^^^^^^^ ^^^ ^^^^^^^^^^ ^^ ^^ ^^^^^^^^^^^^^^^ ^^ ^^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^ ^^^^^^^^^^ ^^ ^^ ^^^^^^^^^^^^^^^ ^^ ^^^ ^^^^^ ^^^^^^^^^ ^^^^^^^^^^ ^^^ ^^ ^^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^ ^^ ^^ ^^ ^^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^^^^^^^^ ^^^ ^^^^^ ^^^^^^^^^^^^ ^^ ^^^^^^^^^^^^^^ ^^^ ^^^^^^^^ ^^^^^^^^^^ ^^ ^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^^^^^^^^^^ ^^ ^^^^^^^^^ ^^^^^^ ^^^^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
tgt2 = src2; // Should error
->tgt2 = src2 : { [x: number]: number; toString: () => string; toLocaleString: { (): string; (locales: string | string[], options?: Intl.NumberFormatOptions & Intl.DateTimeFormatOptions): string; }; pop: () => number; push: (...items: number[]) => number; concat: { (...items: ConcatArray<number>[]): number[]; (...items: (number | ConcatArray<number>)[]): number[]; }; join: (separator?: string) => string; reverse: () => number[]; shift: () => number; slice: (start?: number, end?: number) => number[]; sort: (compareFn?: (a: number, b: number) => number) => number[]; splice: { (start: number, deleteCount?: number): number[]; (start: number, deleteCount: number, ...items: number[]): number[]; }; unshift: (...items: number[]) => number; indexOf: (searchElement: number, fromIndex?: number) => number; lastIndexOf: (searchElement: number, fromIndex?: number) => number; every: { <S extends number>(predicate: (value: number, index: number, array: number[]) => value is S, thisArg?: any): this is S[]; (predicate: (value: number, index: number, array: number[]) => unknown, thisArg?: any): boolean; }; some: (predicate: (value: number, index: number, array: number[]) => unknown, thisArg?: any) => boolean; forEach: (callbackfn: (value: number, index: number, array: number[]) => void, thisArg?: any) => void; map: <U>(callbackfn: (value: number, index: number, array: number[]) => U, thisArg?: any) => U[]; filter: { <S extends number>(predicate: (value: number, index: number, array: number[]) => value is S, thisArg?: any): S[]; (predicate: (value: number, index: number, array: number[]) => unknown, thisArg?: any): number[]; }; reduce: { (callbackfn: (previousValue: number, currentValue: number, currentIndex: number, array: number[]) => number): number; (callbackfn: (previousValue: number, currentValue: number, currentIndex: number, array: number[]) => number, initialValue: number): number; <U>(callbackfn: (previousValue: U, currentValue: number, currentIndex: number, array: number[]) => U, initialValue: U): U; }; reduceRight: { (callbackfn: (previousValue: number, currentValue: number, currentIndex: number, array: number[]) => number): number; (callbackfn: (previousValue: number, currentValue: number, currentIndex: number, array: number[]) => number, initialValue: number): number; <U>(callbackfn: (previousValue: U, currentValue: number, currentIndex: number, array: number[]) => U, initialValue: U): U; }; find: { <S extends number>(predicate: (value: number, index: number, obj: number[]) => value is S, thisArg?: any): S; (predicate: (value: number, index: number, obj: number[]) => unknown, thisArg?: any): number; }; findIndex: (predicate: (value: number, index: number, obj: number[]) => unknown, thisArg?: any) => number; fill: (value: number, start?: number, end?: number) => number[]; copyWithin: (target: number, start: number, end?: number) => number[]; entries: () => IterableIterator<[number, number]>; keys: () => IterableIterator<number, BuiltinIteratorReturn>; values: () => IterableIterator<number>; includes: (searchElement: number, fromIndex?: number) => boolean; flatMap: <U, This = undefined>(callback: (this: This, value: number, index: number, array: number[]) => U | readonly U[], thisArg?: This) => U[]; flat: <A, D extends number = 1>(this: A, depth?: D) => FlatArray<A, D>[]; [Symbol.iterator]: () => IterableIterator<number>; readonly [Symbol.unscopables]: { [x: number]: boolean; length?: boolean; toString?: boolean; toLocaleString?: boolean; pop?: boolean; push?: boolean; concat?: boolean; join?: boolean; reverse?: boolean; shift?: boolean; slice?: boolean; sort?: boolean; splice?: boolean; unshift?: boolean; indexOf?: boolean; lastIndexOf?: boolean; every?: boolean; some?: boolean; forEach?: boolean; map?: boolean; filter?: boolean; reduce?: boolean; reduceRight?: boolean; find?: boolean; findIndex?: boolean; fill?: boolean; copyWithin?: boolean; entries?: boolean; keys?: boolean; values?: boolean; includes?: boolean; flatMap?: boolean; flat?: boolean; [Symbol.iterator]?: boolean; readonly [Symbol.unscopables]?: boolean; }; }
-> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^^^^^^^^^^ ^^^ ^^ ^^ ^^^ ^^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^ ^^^^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^ ^^ ^^^ ^^^^^^^^^^^^^^^^^^^^^^ ^^^^ ^^^^^^^^^^ ^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^ ^^ ^^^ ^^^^^^^^^^^^^^ ^^ ^^ ^^ ^^^^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^ ^^^^^^^^^^^^ ^^^^^^^^^^ ^^^ ^^^^^ ^^^^^^^^^^^^^^^^ ^^^^^^^^^^ ^^^ ^^^^^ ^^^^^^^^^^^^ ^^^^^^^^^^^^^^^^^ ^^^ ^^^^^^^^^^ ^^ ^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^ ^^^ ^ ^^^ ^^^ ^^^^^^^^^^ ^^ ^^ ^^^^^^^^^^^^^^^ ^^ ^^^ ^^^ ^^^^^^^^^^^^ ^^^ ^^^^^^^^^^ ^^ ^^ ^^^^^^^^^^^^^^^ ^^ ^^^ ^^^^^ ^^^^^^^^^^^^ ^^^ ^^^^^^^^^^ ^^ ^^ ^^^^^^^^^^^^^^^ ^^ ^^^ ^^^^^ ^^^^^^^^ ^^ ^^^ ^^^^^^^^^^ ^^ ^^ ^^^^^^^^^^^^^^^^^^ ^^^ ^^^^^^^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^^^ ^^^ ^^^^^^^^^^ ^^ ^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^ ^^^^^^^^^ ^^^ ^^^^^^^^^^ ^^ ^^ ^^^^^^^^^^^^^^^ ^^ ^^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^ ^^^^^^^^^^ ^^^^^^^^^^ ^^ ^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^ ^^^^^^^^^^ ^^^^^^^^^^ ^^ ^^ ^^^^^^^^^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^^^^^^ ^^ ^^^ ^^^^^ ^^^^^^^^^^ ^^ ^^ ^^^^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^ ^^^^^^^^^^ ^^^^^^^^^^ ^^ ^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^ ^^^^^^^^^^ ^^^^^^^^^^ ^^ ^^ ^^^^^^^^^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^^^^^^ ^^ ^^^ ^^^^^ ^^^^^^^^^^ ^^ ^^ ^^^^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^^^ ^^^ ^^^^^^^^^^ ^^ ^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^ ^^^^^^^ ^^^ ^^^^^^^^^^ ^^ ^^ ^^^^^^^^^^^^^^^ ^^ ^^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^ ^^^^^^^^^^ ^^ ^^ ^^^^^^^^^^^^^^^ ^^ ^^^ ^^^^^ ^^^^^^^^^ ^^^^^^^^^^ ^^^ ^^ ^^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^ ^^ ^^ ^^ ^^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^^^^^^^^ ^^^ ^^^^^ ^^^^^^^^^^^^ ^^ ^^^^^^^^^^^^^^ ^^^ ^^^^^^^^ ^^^^^^^^^^ ^^ ^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^^^^^^^^^^ ^^ ^^^^^^^^^ ^^^^^^ ^^^^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+>tgt2 = src2 : { [x: number]: number; toString: () => string; toLocaleString: { (): string; (locales: string | string[], options?: Intl.NumberFormatOptions & Intl.DateTimeFormatOptions): string; }; pop: () => number; push: (...items: number[]) => number; concat: { (...items: ConcatArray<number>[]): number[]; (...items: (number | ConcatArray<number>)[]): number[]; }; join: (separator?: string) => string; reverse: () => number[]; shift: () => number; slice: (start?: number, end?: number) => number[]; sort: (compareFn?: (a: number, b: number) => number) => number[]; splice: { (start: number, deleteCount?: number): number[]; (start: number, deleteCount: number, ...items: number[]): number[]; }; unshift: (...items: number[]) => number; indexOf: (searchElement: number, fromIndex?: number) => number; lastIndexOf: (searchElement: number, fromIndex?: number) => number; every: { <S extends number>(predicate: (value: number, index: number, array: number[]) => value is S, thisArg?: any): this is S[]; (predicate: (value: number, index: number, array: number[]) => unknown, thisArg?: any): boolean; }; some: (predicate: (value: number, index: number, array: number[]) => unknown, thisArg?: any) => boolean; forEach: (callbackfn: (value: number, index: number, array: number[]) => void, thisArg?: any) => void; map: <U>(callbackfn: (value: number, index: number, array: number[]) => U, thisArg?: any) => U[]; filter: { <S extends number>(predicate: (value: number, index: number, array: number[]) => value is S, thisArg?: any): S[]; (predicate: (value: number, index: number, array: number[]) => unknown, thisArg?: any): number[]; }; reduce: { (callbackfn: (previousValue: number, currentValue: number, currentIndex: number, array: number[]) => number): number; (callbackfn: (previousValue: number, currentValue: number, currentIndex: number, array: number[]) => number, initialValue: number): number; <U>(callbackfn: (previousValue: U, currentValue: number, currentIndex: number, array: number[]) => U, initialValue: U): U; }; reduceRight: { (callbackfn: (previousValue: number, currentValue: number, currentIndex: number, array: number[]) => number): number; (callbackfn: (previousValue: number, currentValue: number, currentIndex: number, array: number[]) => number, initialValue: number): number; <U>(callbackfn: (previousValue: U, currentValue: number, currentIndex: number, array: number[]) => U, initialValue: U): U; }; find: { <S extends number>(predicate: (value: number, index: number, obj: number[]) => value is S, thisArg?: any): S; (predicate: (value: number, index: number, obj: number[]) => unknown, thisArg?: any): number; }; findIndex: (predicate: (value: number, index: number, obj: number[]) => unknown, thisArg?: any) => number; fill: (value: number, start?: number, end?: number) => number[]; copyWithin: (target: number, start: number, end?: number) => number[]; entries: () => BuiltinIterator<[number, number], any, any>; keys: () => BuiltinIterator<number, BuiltinIteratorReturn>; values: () => BuiltinIterator<number, any, any>; includes: (searchElement: number, fromIndex?: number) => boolean; flatMap: <U, This = undefined>(callback: (this: This, value: number, index: number, array: number[]) => U | readonly U[], thisArg?: This) => U[]; flat: <A, D extends number = 1>(this: A, depth?: D) => FlatArray<A, D>[]; [Symbol.iterator]: () => BuiltinIterator<number, any, any>; readonly [Symbol.unscopables]: { [x: number]: boolean; length?: boolean; toString?: boolean; toLocaleString?: boolean; pop?: boolean; push?: boolean; concat?: boolean; join?: boolean; reverse?: boolean; shift?: boolean; slice?: boolean; sort?: boolean; splice?: boolean; unshift?: boolean; indexOf?: boolean; lastIndexOf?: boolean; every?: boolean; some?: boolean; forEach?: boolean; map?: boolean; filter?: boolean; reduce?: boolean; reduceRight?: boolean; find?: boolean; findIndex?: boolean; fill?: boolean; copyWithin?: boolean; entries?: boolean; keys?: boolean; values?: boolean; includes?: boolean; flatMap?: boolean; flat?: boolean; [Symbol.iterator]?: boolean; readonly [Symbol.unscopables]?: boolean; }; }
+> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^^^^^^^^^^ ^^^ ^^ ^^ ^^^ ^^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^ ^^^^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^ ^^ ^^^ ^^^^^^^^^^^^^^^^^^^^^^ ^^^^ ^^^^^^^^^^ ^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^ ^^ ^^^ ^^^^^^^^^^^^^^ ^^ ^^ ^^ ^^^^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^ ^^^^^^^^^^^^ ^^^^^^^^^^ ^^^ ^^^^^ ^^^^^^^^^^^^^^^^ ^^^^^^^^^^ ^^^ ^^^^^ ^^^^^^^^^^^^ ^^^^^^^^^^^^^^^^^ ^^^ ^^^^^^^^^^ ^^ ^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^ ^^^ ^ ^^^ ^^^ ^^^^^^^^^^ ^^ ^^ ^^^^^^^^^^^^^^^ ^^ ^^^ ^^^ ^^^^^^^^^^^^ ^^^ ^^^^^^^^^^ ^^ ^^ ^^^^^^^^^^^^^^^ ^^ ^^^ ^^^^^ ^^^^^^^^^^^^ ^^^ ^^^^^^^^^^ ^^ ^^ ^^^^^^^^^^^^^^^ ^^ ^^^ ^^^^^ ^^^^^^^^ ^^ ^^^ ^^^^^^^^^^ ^^ ^^ ^^^^^^^^^^^^^^^^^^ ^^^ ^^^^^^^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^^^ ^^^ ^^^^^^^^^^ ^^ ^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^ ^^^^^^^^^ ^^^ ^^^^^^^^^^ ^^ ^^ ^^^^^^^^^^^^^^^ ^^ ^^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^ ^^^^^^^^^^ ^^^^^^^^^^ ^^ ^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^ ^^^^^^^^^^ ^^^^^^^^^^ ^^ ^^ ^^^^^^^^^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^^^^^^ ^^ ^^^ ^^^^^ ^^^^^^^^^^ ^^ ^^ ^^^^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^ ^^^^^^^^^^ ^^^^^^^^^^ ^^ ^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^ ^^^^^^^^^^ ^^^^^^^^^^ ^^ ^^ ^^^^^^^^^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^^^^^^ ^^ ^^^ ^^^^^ ^^^^^^^^^^ ^^ ^^ ^^^^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^^^ ^^^ ^^^^^^^^^^ ^^ ^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^ ^^^^^^^ ^^^ ^^^^^^^^^^ ^^ ^^ ^^^^^^^^^^^^^^^ ^^ ^^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^ ^^^^^^^^^^ ^^ ^^ ^^^^^^^^^^^^^^^ ^^ ^^^ ^^^^^ ^^^^^^^^^ ^^^^^^^^^^ ^^^ ^^ ^^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^ ^^ ^^ ^^ ^^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^^^^^^^^ ^^^ ^^^^^ ^^^^^^^^^^^^ ^^ ^^^^^^^^^^^^^^ ^^^ ^^^^^^^^ ^^^^^^^^^^ ^^ ^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^^^^^^^^^^ ^^ ^^^^^^^^^ ^^^^^^ ^^^^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
>tgt2 : number[]
> : ^^^^^^^^
->src2 : { [x: number]: number; toString: () => string; toLocaleString: { (): string; (locales: string | string[], options?: Intl.NumberFormatOptions & Intl.DateTimeFormatOptions): string; }; pop: () => number; push: (...items: number[]) => number; concat: { (...items: ConcatArray<number>[]): number[]; (...items: (number | ConcatArray<number>)[]): number[]; }; join: (separator?: string) => string; reverse: () => number[]; shift: () => number; slice: (start?: number, end?: number) => number[]; sort: (compareFn?: (a: number, b: number) => number) => number[]; splice: { (start: number, deleteCount?: number): number[]; (start: number, deleteCount: number, ...items: number[]): number[]; }; unshift: (...items: number[]) => number; indexOf: (searchElement: number, fromIndex?: number) => number; lastIndexOf: (searchElement: number, fromIndex?: number) => number; every: { <S extends number>(predicate: (value: number, index: number, array: number[]) => value is S, thisArg?: any): this is S[]; (predicate: (value: number, index: number, array: number[]) => unknown, thisArg?: any): boolean; }; some: (predicate: (value: number, index: number, array: number[]) => unknown, thisArg?: any) => boolean; forEach: (callbackfn: (value: number, index: number, array: number[]) => void, thisArg?: any) => void; map: <U>(callbackfn: (value: number, index: number, array: number[]) => U, thisArg?: any) => U[]; filter: { <S extends number>(predicate: (value: number, index: number, array: number[]) => value is S, thisArg?: any): S[]; (predicate: (value: number, index: number, array: number[]) => unknown, thisArg?: any): number[]; }; reduce: { (callbackfn: (previousValue: number, currentValue: number, currentIndex: number, array: number[]) => number): number; (callbackfn: (previousValue: number, currentValue: number, currentIndex: number, array: number[]) => number, initialValue: number): number; <U>(callbackfn: (previousValue: U, currentValue: number, currentIndex: number, array: number[]) => U, initialValue: U): U; }; reduceRight: { (callbackfn: (previousValue: number, currentValue: number, currentIndex: number, array: number[]) => number): number; (callbackfn: (previousValue: number, currentValue: number, currentIndex: number, array: number[]) => number, initialValue: number): number; <U>(callbackfn: (previousValue: U, currentValue: number, currentIndex: number, array: number[]) => U, initialValue: U): U; }; find: { <S extends number>(predicate: (value: number, index: number, obj: number[]) => value is S, thisArg?: any): S; (predicate: (value: number, index: number, obj: number[]) => unknown, thisArg?: any): number; }; findIndex: (predicate: (value: number, index: number, obj: number[]) => unknown, thisArg?: any) => number; fill: (value: number, start?: number, end?: number) => number[]; copyWithin: (target: number, start: number, end?: number) => number[]; entries: () => IterableIterator<[number, number]>; keys: () => IterableIterator<number, BuiltinIteratorReturn>; values: () => IterableIterator<number>; includes: (searchElement: number, fromIndex?: number) => boolean; flatMap: <U, This = undefined>(callback: (this: This, value: number, index: number, array: number[]) => U | readonly U[], thisArg?: This) => U[]; flat: <A, D extends number = 1>(this: A, depth?: D) => FlatArray<A, D>[]; [Symbol.iterator]: () => IterableIterator<number>; readonly [Symbol.unscopables]: { [x: number]: boolean; length?: boolean; toString?: boolean; toLocaleString?: boolean; pop?: boolean; push?: boolean; concat?: boolean; join?: boolean; reverse?: boolean; shift?: boolean; slice?: boolean; sort?: boolean; splice?: boolean; unshift?: boolean; indexOf?: boolean; lastIndexOf?: boolean; every?: boolean; some?: boolean; forEach?: boolean; map?: boolean; filter?: boolean; reduce?: boolean; reduceRight?: boolean; find?: boolean; findIndex?: boolean; fill?: boolean; copyWithin?: boolean; entries?: boolean; keys?: boolean; values?: boolean; includes?: boolean; flatMap?: boolean; flat?: boolean; [Symbol.iterator]?: boolean; readonly [Symbol.unscopables]?: boolean; }; }
-> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^^^^^^^^^^ ^^^ ^^ ^^ ^^^ ^^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^ ^^^^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^ ^^ ^^^ ^^^^^^^^^^^^^^^^^^^^^^ ^^^^ ^^^^^^^^^^ ^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^ ^^ ^^^ ^^^^^^^^^^^^^^ ^^ ^^ ^^ ^^^^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^ ^^^^^^^^^^^^ ^^^^^^^^^^ ^^^ ^^^^^ ^^^^^^^^^^^^^^^^ ^^^^^^^^^^ ^^^ ^^^^^ ^^^^^^^^^^^^ ^^^^^^^^^^^^^^^^^ ^^^ ^^^^^^^^^^ ^^ ^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^ ^^^ ^ ^^^ ^^^ ^^^^^^^^^^ ^^ ^^ ^^^^^^^^^^^^^^^ ^^ ^^^ ^^^ ^^^^^^^^^^^^ ^^^ ^^^^^^^^^^ ^^ ^^ ^^^^^^^^^^^^^^^ ^^ ^^^ ^^^^^ ^^^^^^^^^^^^ ^^^ ^^^^^^^^^^ ^^ ^^ ^^^^^^^^^^^^^^^ ^^ ^^^ ^^^^^ ^^^^^^^^ ^^ ^^^ ^^^^^^^^^^ ^^ ^^ ^^^^^^^^^^^^^^^^^^ ^^^ ^^^^^^^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^^^ ^^^ ^^^^^^^^^^ ^^ ^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^ ^^^^^^^^^ ^^^ ^^^^^^^^^^ ^^ ^^ ^^^^^^^^^^^^^^^ ^^ ^^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^ ^^^^^^^^^^ ^^^^^^^^^^ ^^ ^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^ ^^^^^^^^^^ ^^^^^^^^^^ ^^ ^^ ^^^^^^^^^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^^^^^^ ^^ ^^^ ^^^^^ ^^^^^^^^^^ ^^ ^^ ^^^^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^ ^^^^^^^^^^ ^^^^^^^^^^ ^^ ^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^ ^^^^^^^^^^ ^^^^^^^^^^ ^^ ^^ ^^^^^^^^^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^^^^^^ ^^ ^^^ ^^^^^ ^^^^^^^^^^ ^^ ^^ ^^^^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^^^ ^^^ ^^^^^^^^^^ ^^ ^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^ ^^^^^^^ ^^^ ^^^^^^^^^^ ^^ ^^ ^^^^^^^^^^^^^^^ ^^ ^^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^ ^^^^^^^^^^ ^^ ^^ ^^^^^^^^^^^^^^^ ^^ ^^^ ^^^^^ ^^^^^^^^^ ^^^^^^^^^^ ^^^ ^^ ^^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^ ^^ ^^ ^^ ^^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^^^^^^^^ ^^^ ^^^^^ ^^^^^^^^^^^^ ^^ ^^^^^^^^^^^^^^ ^^^ ^^^^^^^^ ^^^^^^^^^^ ^^ ^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^^^^^^^^^^ ^^ ^^^^^^^^^ ^^^^^^ ^^^^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+>src2 : { [x: number]: number; toString: () => string; toLocaleString: { (): string; (locales: string | string[], options?: Intl.NumberFormatOptions & Intl.DateTimeFormatOptions): string; }; pop: () => number; push: (...items: number[]) => number; concat: { (...items: ConcatArray<number>[]): number[]; (...items: (number | ConcatArray<number>)[]): number[]; }; join: (separator?: string) => string; reverse: () => number[]; shift: () => number; slice: (start?: number, end?: number) => number[]; sort: (compareFn?: (a: number, b: number) => number) => number[]; splice: { (start: number, deleteCount?: number): number[]; (start: number, deleteCount: number, ...items: number[]): number[]; }; unshift: (...items: number[]) => number; indexOf: (searchElement: number, fromIndex?: number) => number; lastIndexOf: (searchElement: number, fromIndex?: number) => number; every: { <S extends number>(predicate: (value: number, index: number, array: number[]) => value is S, thisArg?: any): this is S[]; (predicate: (value: number, index: number, array: number[]) => unknown, thisArg?: any): boolean; }; some: (predicate: (value: number, index: number, array: number[]) => unknown, thisArg?: any) => boolean; forEach: (callbackfn: (value: number, index: number, array: number[]) => void, thisArg?: any) => void; map: <U>(callbackfn: (value: number, index: number, array: number[]) => U, thisArg?: any) => U[]; filter: { <S extends number>(predicate: (value: number, index: number, array: number[]) => value is S, thisArg?: any): S[]; (predicate: (value: number, index: number, array: number[]) => unknown, thisArg?: any): number[]; }; reduce: { (callbackfn: (previousValue: number, currentValue: number, currentIndex: number, array: number[]) => number): number; (callbackfn: (previousValue: number, currentValue: number, currentIndex: number, array: number[]) => number, initialValue: number): number; <U>(callbackfn: (previousValue: U, currentValue: number, currentIndex: number, array: number[]) => U, initialValue: U): U; }; reduceRight: { (callbackfn: (previousValue: number, currentValue: number, currentIndex: number, array: number[]) => number): number; (callbackfn: (previousValue: number, currentValue: number, currentIndex: number, array: number[]) => number, initialValue: number): number; <U>(callbackfn: (previousValue: U, currentValue: number, currentIndex: number, array: number[]) => U, initialValue: U): U; }; find: { <S extends number>(predicate: (value: number, index: number, obj: number[]) => value is S, thisArg?: any): S; (predicate: (value: number, index: number, obj: number[]) => unknown, thisArg?: any): number; }; findIndex: (predicate: (value: number, index: number, obj: number[]) => unknown, thisArg?: any) => number; fill: (value: number, start?: number, end?: number) => number[]; copyWithin: (target: number, start: number, end?: number) => number[]; entries: () => BuiltinIterator<[number, number], any, any>; keys: () => BuiltinIterator<number, BuiltinIteratorReturn>; values: () => BuiltinIterator<number, any, any>; includes: (searchElement: number, fromIndex?: number) => boolean; flatMap: <U, This = undefined>(callback: (this: This, value: number, index: number, array: number[]) => U | readonly U[], thisArg?: This) => U[]; flat: <A, D extends number = 1>(this: A, depth?: D) => FlatArray<A, D>[]; [Symbol.iterator]: () => BuiltinIterator<number, any, any>; readonly [Symbol.unscopables]: { [x: number]: boolean; length?: boolean; toString?: boolean; toLocaleString?: boolean; pop?: boolean; push?: boolean; concat?: boolean; join?: boolean; reverse?: boolean; shift?: boolean; slice?: boolean; sort?: boolean; splice?: boolean; unshift?: boolean; indexOf?: boolean; lastIndexOf?: boolean; every?: boolean; some?: boolean; forEach?: boolean; map?: boolean; filter?: boolean; reduce?: boolean; reduceRight?: boolean; find?: boolean; findIndex?: boolean; fill?: boolean; copyWithin?: boolean; entries?: boolean; keys?: boolean; values?: boolean; includes?: boolean; flatMap?: boolean; flat?: boolean; [Symbol.iterator]?: boolean; readonly [Symbol.unscopables]?: boolean; }; }
+> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^^^^^^^^^^ ^^^ ^^ ^^ ^^^ ^^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^ ^^^^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^ ^^ ^^^ ^^^^^^^^^^^^^^^^^^^^^^ ^^^^ ^^^^^^^^^^ ^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^ ^^ ^^^ ^^^^^^^^^^^^^^ ^^ ^^ ^^ ^^^^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^ ^^^^^^^^^^^^ ^^^^^^^^^^ ^^^ ^^^^^ ^^^^^^^^^^^^^^^^ ^^^^^^^^^^ ^^^ ^^^^^ ^^^^^^^^^^^^ ^^^^^^^^^^^^^^^^^ ^^^ ^^^^^^^^^^ ^^ ^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^ ^^^ ^ ^^^ ^^^ ^^^^^^^^^^ ^^ ^^ ^^^^^^^^^^^^^^^ ^^ ^^^ ^^^ ^^^^^^^^^^^^ ^^^ ^^^^^^^^^^ ^^ ^^ ^^^^^^^^^^^^^^^ ^^ ^^^ ^^^^^ ^^^^^^^^^^^^ ^^^ ^^^^^^^^^^ ^^ ^^ ^^^^^^^^^^^^^^^ ^^ ^^^ ^^^^^ ^^^^^^^^ ^^ ^^^ ^^^^^^^^^^ ^^ ^^ ^^^^^^^^^^^^^^^^^^ ^^^ ^^^^^^^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^^^ ^^^ ^^^^^^^^^^ ^^ ^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^ ^^^^^^^^^ ^^^ ^^^^^^^^^^ ^^ ^^ ^^^^^^^^^^^^^^^ ^^ ^^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^ ^^^^^^^^^^ ^^^^^^^^^^ ^^ ^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^ ^^^^^^^^^^ ^^^^^^^^^^ ^^ ^^ ^^^^^^^^^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^^^^^^ ^^ ^^^ ^^^^^ ^^^^^^^^^^ ^^ ^^ ^^^^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^ ^^^^^^^^^^ ^^^^^^^^^^ ^^ ^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^ ^^^^^^^^^^ ^^^^^^^^^^ ^^ ^^ ^^^^^^^^^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^^^^^^ ^^ ^^^ ^^^^^ ^^^^^^^^^^ ^^ ^^ ^^^^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^^^ ^^^ ^^^^^^^^^^ ^^ ^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^ ^^^^^^^ ^^^ ^^^^^^^^^^ ^^ ^^ ^^^^^^^^^^^^^^^ ^^ ^^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^ ^^^^^^^^^^ ^^ ^^ ^^^^^^^^^^^^^^^ ^^ ^^^ ^^^^^ ^^^^^^^^^ ^^^^^^^^^^ ^^^ ^^ ^^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^ ^^ ^^ ^^ ^^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^^^^^^^^ ^^^ ^^^^^ ^^^^^^^^^^^^ ^^ ^^^^^^^^^^^^^^ ^^^ ^^^^^^^^ ^^^^^^^^^^ ^^ ^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^^^^^^^^^^ ^^ ^^^^^^^^^ ^^^^^^ ^^^^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
diff --git a/tests/baselines/reference/mappedTypeWithAsClauseAndLateBoundProperty2.js b/tests/baselines/reference/mappedTypeWithAsClauseAndLateBoundProperty2.js
index 82e67a1e2c47f..7d5de17211a1a 100644
--- a/tests/baselines/reference/mappedTypeWithAsClauseAndLateBoundProperty2.js
+++ b/tests/baselines/reference/mappedTypeWithAsClauseAndLateBoundProperty2.js
@@ -62,13 +62,13 @@ export declare const thing: {
findIndex: (predicate: (value: number, index: number, obj: number[]) => unknown, thisArg?: any) => number;
fill: (value: number, start?: number, end?: number) => number[];
copyWithin: (target: number, start: number, end?: number) => number[];
- entries: () => IterableIterator<[number, number]>;
- keys: () => IterableIterator<number, BuiltinIteratorReturn>;
- values: () => IterableIterator<number>;
+ entries: () => BuiltinIterator<[number, number], any, any>;
+ keys: () => BuiltinIterator<number, BuiltinIteratorReturn>;
+ values: () => BuiltinIterator<number, any, any>;
includes: (searchElement: number, fromIndex?: number) => boolean;
flatMap: <U, This = undefined>(callback: (this: This, value: number, index: number, array: number[]) => U | readonly U[], thisArg?: This) => U[];
flat: <A, D extends number = 1>(this: A, depth?: D) => FlatArray<A, D>[];
- [Symbol.iterator]: () => IterableIterator<number>;
+ [Symbol.iterator]: () => BuiltinIterator<number, any, any>;
readonly [Symbol.unscopables]: {
[x: number]: boolean;
length?: boolean;
@@ -171,13 +171,13 @@ mappedTypeWithAsClauseAndLateBoundProperty2.d.ts(27,118): error TS2526: A 'this'
findIndex: (predicate: (value: number, index: number, obj: number[]) => unknown, thisArg?: any) => number;
fill: (value: number, start?: number, end?: number) => number[];
copyWithin: (target: number, start: number, end?: number) => number[];
- entries: () => IterableIterator<[number, number]>;
- keys: () => IterableIterator<number, BuiltinIteratorReturn>;
- values: () => IterableIterator<number>;
+ entries: () => BuiltinIterator<[number, number], any, any>;
+ keys: () => BuiltinIterator<number, BuiltinIteratorReturn>;
+ values: () => BuiltinIterator<number, any, any>;
includes: (searchElement: number, fromIndex?: number) => boolean;
flatMap: <U, This = undefined>(callback: (this: This, value: number, index: number, array: number[]) => U | readonly U[], thisArg?: This) => U[];
flat: <A, D extends number = 1>(this: A, depth?: D) => FlatArray<A, D>[];
- [Symbol.iterator]: () => IterableIterator<number>;
+ [Symbol.iterator]: () => BuiltinIterator<number, any, any>;
readonly [Symbol.unscopables]: {
[x: number]: boolean;
length?: boolean;
diff --git a/tests/baselines/reference/mappedTypeWithAsClauseAndLateBoundProperty2.types b/tests/baselines/reference/mappedTypeWithAsClauseAndLateBoundProperty2.types
index 17e5229e64b8d..4f712549244c2 100644
--- a/tests/baselines/reference/mappedTypeWithAsClauseAndLateBoundProperty2.types
+++ b/tests/baselines/reference/mappedTypeWithAsClauseAndLateBoundProperty2.types
@@ -2,11 +2,11 @@
=== mappedTypeWithAsClauseAndLateBoundProperty2.ts ===
export const thing = (null as any as { [K in keyof number[] as Exclude<K, "length">]: (number[])[K] });
->thing : { [x: number]: number; toString: () => string; toLocaleString: { (): string; (locales: string | string[], options?: Intl.NumberFormatOptions & Intl.DateTimeFormatOptions): string; }; pop: () => number; push: (...items: number[]) => number; concat: { (...items: ConcatArray<number>[]): number[]; (...items: (number | ConcatArray<number>)[]): number[]; }; join: (separator?: string) => string; reverse: () => number[]; shift: () => number; slice: (start?: number, end?: number) => number[]; sort: (compareFn?: (a: number, b: number) => number) => number[]; splice: { (start: number, deleteCount?: number): number[]; (start: number, deleteCount: number, ...items: number[]): number[]; }; unshift: (...items: number[]) => number; indexOf: (searchElement: number, fromIndex?: number) => number; lastIndexOf: (searchElement: number, fromIndex?: number) => number; every: { <S extends number>(predicate: (value: number, index: number, array: number[]) => value is S, thisArg?: any): this is S[]; (predicate: (value: number, index: number, array: number[]) => unknown, thisArg?: any): boolean; }; some: (predicate: (value: number, index: number, array: number[]) => unknown, thisArg?: any) => boolean; forEach: (callbackfn: (value: number, index: number, array: number[]) => void, thisArg?: any) => void; map: <U>(callbackfn: (value: number, index: number, array: number[]) => U, thisArg?: any) => U[]; filter: { <S extends number>(predicate: (value: number, index: number, array: number[]) => value is S, thisArg?: any): S[]; (predicate: (value: number, index: number, array: number[]) => unknown, thisArg?: any): number[]; }; reduce: { (callbackfn: (previousValue: number, currentValue: number, currentIndex: number, array: number[]) => number): number; (callbackfn: (previousValue: number, currentValue: number, currentIndex: number, array: number[]) => number, initialValue: number): number; <U>(callbackfn: (previousValue: U, currentValue: number, currentIndex: number, array: number[]) => U, initialValue: U): U; }; reduceRight: { (callbackfn: (previousValue: number, currentValue: number, currentIndex: number, array: number[]) => number): number; (callbackfn: (previousValue: number, currentValue: number, currentIndex: number, array: number[]) => number, initialValue: number): number; <U>(callbackfn: (previousValue: U, currentValue: number, currentIndex: number, array: number[]) => U, initialValue: U): U; }; find: { <S extends number>(predicate: (value: number, index: number, obj: number[]) => value is S, thisArg?: any): S; (predicate: (value: number, index: number, obj: number[]) => unknown, thisArg?: any): number; }; findIndex: (predicate: (value: number, index: number, obj: number[]) => unknown, thisArg?: any) => number; fill: (value: number, start?: number, end?: number) => number[]; copyWithin: (target: number, start: number, end?: number) => number[]; entries: () => IterableIterator<[number, number]>; keys: () => IterableIterator<number, BuiltinIteratorReturn>; values: () => IterableIterator<number>; includes: (searchElement: number, fromIndex?: number) => boolean; flatMap: <U, This = undefined>(callback: (this: This, value: number, index: number, array: number[]) => U | readonly U[], thisArg?: This) => U[]; flat: <A, D extends number = 1>(this: A, depth?: D) => FlatArray<A, D>[]; [Symbol.iterator]: () => IterableIterator<number>; readonly [Symbol.unscopables]: { [x: number]: boolean; length?: boolean; toString?: boolean; toLocaleString?: boolean; pop?: boolean; push?: boolean; concat?: boolean; join?: boolean; reverse?: boolean; shift?: boolean; slice?: boolean; sort?: boolean; splice?: boolean; unshift?: boolean; indexOf?: boolean; lastIndexOf?: boolean; every?: boolean; some?: boolean; forEach?: boolean; map?: boolean; filter?: boolean; reduce?: boolean; reduceRight?: boolean; find?: boolean; findIndex?: boolean; fill?: boolean; copyWithin?: boolean; entries?: boolean; keys?: boolean; values?: boolean; includes?: boolean; flatMap?: boolean; flat?: boolean; [Symbol.iterator]?: boolean; readonly [Symbol.unscopables]?: boolean; }; }
-> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^^^^^^^^^^ ^^^ ^^ ^^ ^^^ ^^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^ ^^^^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^ ^^ ^^^ ^^^^^^^^^^^^^^^^^^^^^^ ^^^^ ^^^^^^^^^^ ^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^ ^^ ^^^ ^^^^^^^^^^^^^^ ^^ ^^ ^^ ^^^^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^ ^^^^^^^^^^^^ ^^^^^^^^^^ ^^^ ^^^^^ ^^^^^^^^^^^^^^^^ ^^^^^^^^^^ ^^^ ^^^^^ ^^^^^^^^^^^^ ^^^^^^^^^^^^^^^^^ ^^^ ^^^^^^^^^^ ^^ ^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^ ^^^ ^ ^^^ ^^^ ^^^^^^^^^^ ^^ ^^ ^^^^^^^^^^^^^^^ ^^ ^^^ ^^^ ^^^^^^^^^^^^ ^^^ ^^^^^^^^^^ ^^ ^^ ^^^^^^^^^^^^^^^ ^^ ^^^ ^^^^^ ^^^^^^^^^^^^ ^^^ ^^^^^^^^^^ ^^ ^^ ^^^^^^^^^^^^^^^ ^^ ^^^ ^^^^^ ^^^^^^^^ ^^ ^^^ ^^^^^^^^^^ ^^ ^^ ^^^^^^^^^^^^^^^^^^ ^^^ ^^^^^^^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^^^ ^^^ ^^^^^^^^^^ ^^ ^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^ ^^^^^^^^^ ^^^ ^^^^^^^^^^ ^^ ^^ ^^^^^^^^^^^^^^^ ^^ ^^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^ ^^^^^^^^^^ ^^^^^^^^^^ ^^ ^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^ ^^^^^^^^^^ ^^^^^^^^^^ ^^ ^^ ^^^^^^^^^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^^^^^^ ^^ ^^^ ^^^^^ ^^^^^^^^^^ ^^ ^^ ^^^^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^ ^^^^^^^^^^ ^^^^^^^^^^ ^^ ^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^ ^^^^^^^^^^ ^^^^^^^^^^ ^^ ^^ ^^^^^^^^^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^^^^^^ ^^ ^^^ ^^^^^ ^^^^^^^^^^ ^^ ^^ ^^^^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^^^ ^^^ ^^^^^^^^^^ ^^ ^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^ ^^^^^^^ ^^^ ^^^^^^^^^^ ^^ ^^ ^^^^^^^^^^^^^^^ ^^ ^^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^ ^^^^^^^^^^ ^^ ^^ ^^^^^^^^^^^^^^^ ^^ ^^^ ^^^^^ ^^^^^^^^^ ^^^^^^^^^^ ^^^ ^^ ^^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^ ^^ ^^ ^^ ^^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^^^^^^^^ ^^^ ^^^^^ ^^^^^^^^^^^^ ^^ ^^^^^^^^^^^^^^ ^^^ ^^^^^^^^ ^^^^^^^^^^ ^^ ^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^^^^^^^^^^ ^^ ^^^^^^^^^ ^^^^^^ ^^^^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
->(null as any as { [K in keyof number[] as Exclude<K, "length">]: (number[])[K] }) : { [x: number]: number; toString: () => string; toLocaleString: { (): string; (locales: string | string[], options?: Intl.NumberFormatOptions & Intl.DateTimeFormatOptions): string; }; pop: () => number; push: (...items: number[]) => number; concat: { (...items: ConcatArray<number>[]): number[]; (...items: (number | ConcatArray<number>)[]): number[]; }; join: (separator?: string) => string; reverse: () => number[]; shift: () => number; slice: (start?: number, end?: number) => number[]; sort: (compareFn?: (a: number, b: number) => number) => number[]; splice: { (start: number, deleteCount?: number): number[]; (start: number, deleteCount: number, ...items: number[]): number[]; }; unshift: (...items: number[]) => number; indexOf: (searchElement: number, fromIndex?: number) => number; lastIndexOf: (searchElement: number, fromIndex?: number) => number; every: { <S extends number>(predicate: (value: number, index: number, array: number[]) => value is S, thisArg?: any): this is S[]; (predicate: (value: number, index: number, array: number[]) => unknown, thisArg?: any): boolean; }; some: (predicate: (value: number, index: number, array: number[]) => unknown, thisArg?: any) => boolean; forEach: (callbackfn: (value: number, index: number, array: number[]) => void, thisArg?: any) => void; map: <U>(callbackfn: (value: number, index: number, array: number[]) => U, thisArg?: any) => U[]; filter: { <S extends number>(predicate: (value: number, index: number, array: number[]) => value is S, thisArg?: any): S[]; (predicate: (value: number, index: number, array: number[]) => unknown, thisArg?: any): number[]; }; reduce: { (callbackfn: (previousValue: number, currentValue: number, currentIndex: number, array: number[]) => number): number; (callbackfn: (previousValue: number, currentValue: number, currentIndex: number, array: number[]) => number, initialValue: number): number; <U>(callbackfn: (previousValue: U, currentValue: number, currentIndex: number, array: number[]) => U, initialValue: U): U; }; reduceRight: { (callbackfn: (previousValue: number, currentValue: number, currentIndex: number, array: number[]) => number): number; (callbackfn: (previousValue: number, currentValue: number, currentIndex: number, array: number[]) => number, initialValue: number): number; <U>(callbackfn: (previousValue: U, currentValue: number, currentIndex: number, array: number[]) => U, initialValue: U): U; }; find: { <S extends number>(predicate: (value: number, index: number, obj: number[]) => value is S, thisArg?: any): S; (predicate: (value: number, index: number, obj: number[]) => unknown, thisArg?: any): number; }; findIndex: (predicate: (value: number, index: number, obj: number[]) => unknown, thisArg?: any) => number; fill: (value: number, start?: number, end?: number) => number[]; copyWithin: (target: number, start: number, end?: number) => number[]; entries: () => IterableIterator<[number, number]>; keys: () => IterableIterator<number, BuiltinIteratorReturn>; values: () => IterableIterator<number>; includes: (searchElement: number, fromIndex?: number) => boolean; flatMap: <U, This = undefined>(callback: (this: This, value: number, index: number, array: number[]) => U | readonly U[], thisArg?: This) => U[]; flat: <A, D extends number = 1>(this: A, depth?: D) => FlatArray<A, D>[]; [Symbol.iterator]: () => IterableIterator<number>; readonly [Symbol.unscopables]: { [x: number]: boolean; length?: boolean; toString?: boolean; toLocaleString?: boolean; pop?: boolean; push?: boolean; concat?: boolean; join?: boolean; reverse?: boolean; shift?: boolean; slice?: boolean; sort?: boolean; splice?: boolean; unshift?: boolean; indexOf?: boolean; lastIndexOf?: boolean; every?: boolean; some?: boolean; forEach?: boolean; map?: boolean; filter?: boolean; reduce?: boolean; reduceRight?: boolean; find?: boolean; findIndex?: boolean; fill?: boolean; copyWithin?: boolean; entries?: boolean; keys?: boolean; values?: boolean; includes?: boolean; flatMap?: boolean; flat?: boolean; [Symbol.iterator]?: boolean; readonly [Symbol.unscopables]?: boolean; }; }
-> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^^^^^^^^^^ ^^^ ^^ ^^ ^^^ ^^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^ ^^^^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^ ^^ ^^^ ^^^^^^^^^^^^^^^^^^^^^^ ^^^^ ^^^^^^^^^^ ^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^ ^^ ^^^ ^^^^^^^^^^^^^^ ^^ ^^ ^^ ^^^^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^ ^^^^^^^^^^^^ ^^^^^^^^^^ ^^^ ^^^^^ ^^^^^^^^^^^^^^^^ ^^^^^^^^^^ ^^^ ^^^^^ ^^^^^^^^^^^^ ^^^^^^^^^^^^^^^^^ ^^^ ^^^^^^^^^^ ^^ ^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^ ^^^ ^ ^^^ ^^^ ^^^^^^^^^^ ^^ ^^ ^^^^^^^^^^^^^^^ ^^ ^^^ ^^^ ^^^^^^^^^^^^ ^^^ ^^^^^^^^^^ ^^ ^^ ^^^^^^^^^^^^^^^ ^^ ^^^ ^^^^^ ^^^^^^^^^^^^ ^^^ ^^^^^^^^^^ ^^ ^^ ^^^^^^^^^^^^^^^ ^^ ^^^ ^^^^^ ^^^^^^^^ ^^ ^^^ ^^^^^^^^^^ ^^ ^^ ^^^^^^^^^^^^^^^^^^ ^^^ ^^^^^^^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^^^ ^^^ ^^^^^^^^^^ ^^ ^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^ ^^^^^^^^^ ^^^ ^^^^^^^^^^ ^^ ^^ ^^^^^^^^^^^^^^^ ^^ ^^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^ ^^^^^^^^^^ ^^^^^^^^^^ ^^ ^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^ ^^^^^^^^^^ ^^^^^^^^^^ ^^ ^^ ^^^^^^^^^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^^^^^^ ^^ ^^^ ^^^^^ ^^^^^^^^^^ ^^ ^^ ^^^^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^ ^^^^^^^^^^ ^^^^^^^^^^ ^^ ^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^ ^^^^^^^^^^ ^^^^^^^^^^ ^^ ^^ ^^^^^^^^^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^^^^^^ ^^ ^^^ ^^^^^ ^^^^^^^^^^ ^^ ^^ ^^^^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^^^ ^^^ ^^^^^^^^^^ ^^ ^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^ ^^^^^^^ ^^^ ^^^^^^^^^^ ^^ ^^ ^^^^^^^^^^^^^^^ ^^ ^^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^ ^^^^^^^^^^ ^^ ^^ ^^^^^^^^^^^^^^^ ^^ ^^^ ^^^^^ ^^^^^^^^^ ^^^^^^^^^^ ^^^ ^^ ^^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^ ^^ ^^ ^^ ^^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^^^^^^^^ ^^^ ^^^^^ ^^^^^^^^^^^^ ^^ ^^^^^^^^^^^^^^ ^^^ ^^^^^^^^ ^^^^^^^^^^ ^^ ^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^^^^^^^^^^ ^^ ^^^^^^^^^ ^^^^^^ ^^^^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
->null as any as { [K in keyof number[] as Exclude<K, "length">]: (number[])[K] } : { [x: number]: number; toString: () => string; toLocaleString: { (): string; (locales: string | string[], options?: Intl.NumberFormatOptions & Intl.DateTimeFormatOptions): string; }; pop: () => number; push: (...items: number[]) => number; concat: { (...items: ConcatArray<number>[]): number[]; (...items: (number | ConcatArray<number>)[]): number[]; }; join: (separator?: string) => string; reverse: () => number[]; shift: () => number; slice: (start?: number, end?: number) => number[]; sort: (compareFn?: (a: number, b: number) => number) => number[]; splice: { (start: number, deleteCount?: number): number[]; (start: number, deleteCount: number, ...items: number[]): number[]; }; unshift: (...items: number[]) => number; indexOf: (searchElement: number, fromIndex?: number) => number; lastIndexOf: (searchElement: number, fromIndex?: number) => number; every: { <S extends number>(predicate: (value: number, index: number, array: number[]) => value is S, thisArg?: any): this is S[]; (predicate: (value: number, index: number, array: number[]) => unknown, thisArg?: any): boolean; }; some: (predicate: (value: number, index: number, array: number[]) => unknown, thisArg?: any) => boolean; forEach: (callbackfn: (value: number, index: number, array: number[]) => void, thisArg?: any) => void; map: <U>(callbackfn: (value: number, index: number, array: number[]) => U, thisArg?: any) => U[]; filter: { <S extends number>(predicate: (value: number, index: number, array: number[]) => value is S, thisArg?: any): S[]; (predicate: (value: number, index: number, array: number[]) => unknown, thisArg?: any): number[]; }; reduce: { (callbackfn: (previousValue: number, currentValue: number, currentIndex: number, array: number[]) => number): number; (callbackfn: (previousValue: number, currentValue: number, currentIndex: number, array: number[]) => number, initialValue: number): number; <U>(callbackfn: (previousValue: U, currentValue: number, currentIndex: number, array: number[]) => U, initialValue: U): U; }; reduceRight: { (callbackfn: (previousValue: number, currentValue: number, currentIndex: number, array: number[]) => number): number; (callbackfn: (previousValue: number, currentValue: number, currentIndex: number, array: number[]) => number, initialValue: number): number; <U>(callbackfn: (previousValue: U, currentValue: number, currentIndex: number, array: number[]) => U, initialValue: U): U; }; find: { <S extends number>(predicate: (value: number, index: number, obj: number[]) => value is S, thisArg?: any): S; (predicate: (value: number, index: number, obj: number[]) => unknown, thisArg?: any): number; }; findIndex: (predicate: (value: number, index: number, obj: number[]) => unknown, thisArg?: any) => number; fill: (value: number, start?: number, end?: number) => number[]; copyWithin: (target: number, start: number, end?: number) => number[]; entries: () => IterableIterator<[number, number]>; keys: () => IterableIterator<number, BuiltinIteratorReturn>; values: () => IterableIterator<number>; includes: (searchElement: number, fromIndex?: number) => boolean; flatMap: <U, This = undefined>(callback: (this: This, value: number, index: number, array: number[]) => U | readonly U[], thisArg?: This) => U[]; flat: <A, D extends number = 1>(this: A, depth?: D) => FlatArray<A, D>[]; [Symbol.iterator]: () => IterableIterator<number>; readonly [Symbol.unscopables]: { [x: number]: boolean; length?: boolean; toString?: boolean; toLocaleString?: boolean; pop?: boolean; push?: boolean; concat?: boolean; join?: boolean; reverse?: boolean; shift?: boolean; slice?: boolean; sort?: boolean; splice?: boolean; unshift?: boolean; indexOf?: boolean; lastIndexOf?: boolean; every?: boolean; some?: boolean; forEach?: boolean; map?: boolean; filter?: boolean; reduce?: boolean; reduceRight?: boolean; find?: boolean; findIndex?: boolean; fill?: boolean; copyWithin?: boolean; entries?: boolean; keys?: boolean; values?: boolean; includes?: boolean; flatMap?: boolean; flat?: boolean; [Symbol.iterator]?: boolean; readonly [Symbol.unscopables]?: boolean; }; }
-> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^^^^^^^^^^ ^^^ ^^ ^^ ^^^ ^^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^ ^^^^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^ ^^ ^^^ ^^^^^^^^^^^^^^^^^^^^^^ ^^^^ ^^^^^^^^^^ ^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^ ^^ ^^^ ^^^^^^^^^^^^^^ ^^ ^^ ^^ ^^^^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^ ^^^^^^^^^^^^ ^^^^^^^^^^ ^^^ ^^^^^ ^^^^^^^^^^^^^^^^ ^^^^^^^^^^ ^^^ ^^^^^ ^^^^^^^^^^^^ ^^^^^^^^^^^^^^^^^ ^^^ ^^^^^^^^^^ ^^ ^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^ ^^^ ^ ^^^ ^^^ ^^^^^^^^^^ ^^ ^^ ^^^^^^^^^^^^^^^ ^^ ^^^ ^^^ ^^^^^^^^^^^^ ^^^ ^^^^^^^^^^ ^^ ^^ ^^^^^^^^^^^^^^^ ^^ ^^^ ^^^^^ ^^^^^^^^^^^^ ^^^ ^^^^^^^^^^ ^^ ^^ ^^^^^^^^^^^^^^^ ^^ ^^^ ^^^^^ ^^^^^^^^ ^^ ^^^ ^^^^^^^^^^ ^^ ^^ ^^^^^^^^^^^^^^^^^^ ^^^ ^^^^^^^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^^^ ^^^ ^^^^^^^^^^ ^^ ^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^ ^^^^^^^^^ ^^^ ^^^^^^^^^^ ^^ ^^ ^^^^^^^^^^^^^^^ ^^ ^^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^ ^^^^^^^^^^ ^^^^^^^^^^ ^^ ^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^ ^^^^^^^^^^ ^^^^^^^^^^ ^^ ^^ ^^^^^^^^^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^^^^^^ ^^ ^^^ ^^^^^ ^^^^^^^^^^ ^^ ^^ ^^^^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^ ^^^^^^^^^^ ^^^^^^^^^^ ^^ ^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^ ^^^^^^^^^^ ^^^^^^^^^^ ^^ ^^ ^^^^^^^^^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^^^^^^ ^^ ^^^ ^^^^^ ^^^^^^^^^^ ^^ ^^ ^^^^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^^^ ^^^ ^^^^^^^^^^ ^^ ^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^ ^^^^^^^ ^^^ ^^^^^^^^^^ ^^ ^^ ^^^^^^^^^^^^^^^ ^^ ^^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^ ^^^^^^^^^^ ^^ ^^ ^^^^^^^^^^^^^^^ ^^ ^^^ ^^^^^ ^^^^^^^^^ ^^^^^^^^^^ ^^^ ^^ ^^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^ ^^ ^^ ^^ ^^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^^^^^^^^ ^^^ ^^^^^ ^^^^^^^^^^^^ ^^ ^^^^^^^^^^^^^^ ^^^ ^^^^^^^^ ^^^^^^^^^^ ^^ ^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^^^^^^^^^^ ^^ ^^^^^^^^^ ^^^^^^ ^^^^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+>thing : { [x: number]: number; toString: () => string; toLocaleString: { (): string; (locales: string | string[], options?: Intl.NumberFormatOptions & Intl.DateTimeFormatOptions): string; }; pop: () => number; push: (...items: number[]) => number; concat: { (...items: ConcatArray<number>[]): number[]; (...items: (number | ConcatArray<number>)[]): number[]; }; join: (separator?: string) => string; reverse: () => number[]; shift: () => number; slice: (start?: number, end?: number) => number[]; sort: (compareFn?: (a: number, b: number) => number) => number[]; splice: { (start: number, deleteCount?: number): number[]; (start: number, deleteCount: number, ...items: number[]): number[]; }; unshift: (...items: number[]) => number; indexOf: (searchElement: number, fromIndex?: number) => number; lastIndexOf: (searchElement: number, fromIndex?: number) => number; every: { <S extends number>(predicate: (value: number, index: number, array: number[]) => value is S, thisArg?: any): this is S[]; (predicate: (value: number, index: number, array: number[]) => unknown, thisArg?: any): boolean; }; some: (predicate: (value: number, index: number, array: number[]) => unknown, thisArg?: any) => boolean; forEach: (callbackfn: (value: number, index: number, array: number[]) => void, thisArg?: any) => void; map: <U>(callbackfn: (value: number, index: number, array: number[]) => U, thisArg?: any) => U[]; filter: { <S extends number>(predicate: (value: number, index: number, array: number[]) => value is S, thisArg?: any): S[]; (predicate: (value: number, index: number, array: number[]) => unknown, thisArg?: any): number[]; }; reduce: { (callbackfn: (previousValue: number, currentValue: number, currentIndex: number, array: number[]) => number): number; (callbackfn: (previousValue: number, currentValue: number, currentIndex: number, array: number[]) => number, initialValue: number): number; <U>(callbackfn: (previousValue: U, currentValue: number, currentIndex: number, array: number[]) => U, initialValue: U): U; }; reduceRight: { (callbackfn: (previousValue: number, currentValue: number, currentIndex: number, array: number[]) => number): number; (callbackfn: (previousValue: number, currentValue: number, currentIndex: number, array: number[]) => number, initialValue: number): number; <U>(callbackfn: (previousValue: U, currentValue: number, currentIndex: number, array: number[]) => U, initialValue: U): U; }; find: { <S extends number>(predicate: (value: number, index: number, obj: number[]) => value is S, thisArg?: any): S; (predicate: (value: number, index: number, obj: number[]) => unknown, thisArg?: any): number; }; findIndex: (predicate: (value: number, index: number, obj: number[]) => unknown, thisArg?: any) => number; fill: (value: number, start?: number, end?: number) => number[]; copyWithin: (target: number, start: number, end?: number) => number[]; entries: () => BuiltinIterator<[number, number], any, any>; keys: () => BuiltinIterator<number, BuiltinIteratorReturn>; values: () => BuiltinIterator<number, any, any>; includes: (searchElement: number, fromIndex?: number) => boolean; flatMap: <U, This = undefined>(callback: (this: This, value: number, index: number, array: number[]) => U | readonly U[], thisArg?: This) => U[]; flat: <A, D extends number = 1>(this: A, depth?: D) => FlatArray<A, D>[]; [Symbol.iterator]: () => BuiltinIterator<number, any, any>; readonly [Symbol.unscopables]: { [x: number]: boolean; length?: boolean; toString?: boolean; toLocaleString?: boolean; pop?: boolean; push?: boolean; concat?: boolean; join?: boolean; reverse?: boolean; shift?: boolean; slice?: boolean; sort?: boolean; splice?: boolean; unshift?: boolean; indexOf?: boolean; lastIndexOf?: boolean; every?: boolean; some?: boolean; forEach?: boolean; map?: boolean; filter?: boolean; reduce?: boolean; reduceRight?: boolean; find?: boolean; findIndex?: boolean; fill?: boolean; copyWithin?: boolean; entries?: boolean; keys?: boolean; values?: boolean; includes?: boolean; flatMap?: boolean; flat?: boolean; [Symbol.iterator]?: boolean; readonly [Symbol.unscopables]?: boolean; }; }
+> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^^^^^^^^^^ ^^^ ^^ ^^ ^^^ ^^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^ ^^^^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^ ^^ ^^^ ^^^^^^^^^^^^^^^^^^^^^^ ^^^^ ^^^^^^^^^^ ^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^ ^^ ^^^ ^^^^^^^^^^^^^^ ^^ ^^ ^^ ^^^^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^ ^^^^^^^^^^^^ ^^^^^^^^^^ ^^^ ^^^^^ ^^^^^^^^^^^^^^^^ ^^^^^^^^^^ ^^^ ^^^^^ ^^^^^^^^^^^^ ^^^^^^^^^^^^^^^^^ ^^^ ^^^^^^^^^^ ^^ ^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^ ^^^ ^ ^^^ ^^^ ^^^^^^^^^^ ^^ ^^ ^^^^^^^^^^^^^^^ ^^ ^^^ ^^^ ^^^^^^^^^^^^ ^^^ ^^^^^^^^^^ ^^ ^^ ^^^^^^^^^^^^^^^ ^^ ^^^ ^^^^^ ^^^^^^^^^^^^ ^^^ ^^^^^^^^^^ ^^ ^^ ^^^^^^^^^^^^^^^ ^^ ^^^ ^^^^^ ^^^^^^^^ ^^ ^^^ ^^^^^^^^^^ ^^ ^^ ^^^^^^^^^^^^^^^^^^ ^^^ ^^^^^^^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^^^ ^^^ ^^^^^^^^^^ ^^ ^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^ ^^^^^^^^^ ^^^ ^^^^^^^^^^ ^^ ^^ ^^^^^^^^^^^^^^^ ^^ ^^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^ ^^^^^^^^^^ ^^^^^^^^^^ ^^ ^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^ ^^^^^^^^^^ ^^^^^^^^^^ ^^ ^^ ^^^^^^^^^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^^^^^^ ^^ ^^^ ^^^^^ ^^^^^^^^^^ ^^ ^^ ^^^^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^ ^^^^^^^^^^ ^^^^^^^^^^ ^^ ^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^ ^^^^^^^^^^ ^^^^^^^^^^ ^^ ^^ ^^^^^^^^^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^^^^^^ ^^ ^^^ ^^^^^ ^^^^^^^^^^ ^^ ^^ ^^^^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^^^ ^^^ ^^^^^^^^^^ ^^ ^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^ ^^^^^^^ ^^^ ^^^^^^^^^^ ^^ ^^ ^^^^^^^^^^^^^^^ ^^ ^^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^ ^^^^^^^^^^ ^^ ^^ ^^^^^^^^^^^^^^^ ^^ ^^^ ^^^^^ ^^^^^^^^^ ^^^^^^^^^^ ^^^ ^^ ^^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^ ^^ ^^ ^^ ^^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^^^^^^^^ ^^^ ^^^^^ ^^^^^^^^^^^^ ^^ ^^^^^^^^^^^^^^ ^^^ ^^^^^^^^ ^^^^^^^^^^ ^^ ^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^^^^^^^^^^ ^^ ^^^^^^^^^ ^^^^^^ ^^^^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+>(null as any as { [K in keyof number[] as Exclude<K, "length">]: (number[])[K] }) : { [x: number]: number; toString: () => string; toLocaleString: { (): string; (locales: string | string[], options?: Intl.NumberFormatOptions & Intl.DateTimeFormatOptions): string; }; pop: () => number; push: (...items: number[]) => number; concat: { (...items: ConcatArray<number>[]): number[]; (...items: (number | ConcatArray<number>)[]): number[]; }; join: (separator?: string) => string; reverse: () => number[]; shift: () => number; slice: (start?: number, end?: number) => number[]; sort: (compareFn?: (a: number, b: number) => number) => number[]; splice: { (start: number, deleteCount?: number): number[]; (start: number, deleteCount: number, ...items: number[]): number[]; }; unshift: (...items: number[]) => number; indexOf: (searchElement: number, fromIndex?: number) => number; lastIndexOf: (searchElement: number, fromIndex?: number) => number; every: { <S extends number>(predicate: (value: number, index: number, array: number[]) => value is S, thisArg?: any): this is S[]; (predicate: (value: number, index: number, array: number[]) => unknown, thisArg?: any): boolean; }; some: (predicate: (value: number, index: number, array: number[]) => unknown, thisArg?: any) => boolean; forEach: (callbackfn: (value: number, index: number, array: number[]) => void, thisArg?: any) => void; map: <U>(callbackfn: (value: number, index: number, array: number[]) => U, thisArg?: any) => U[]; filter: { <S extends number>(predicate: (value: number, index: number, array: number[]) => value is S, thisArg?: any): S[]; (predicate: (value: number, index: number, array: number[]) => unknown, thisArg?: any): number[]; }; reduce: { (callbackfn: (previousValue: number, currentValue: number, currentIndex: number, array: number[]) => number): number; (callbackfn: (previousValue: number, currentValue: number, currentIndex: number, array: number[]) => number, initialValue: number): number; <U>(callbackfn: (previousValue: U, currentValue: number, currentIndex: number, array: number[]) => U, initialValue: U): U; }; reduceRight: { (callbackfn: (previousValue: number, currentValue: number, currentIndex: number, array: number[]) => number): number; (callbackfn: (previousValue: number, currentValue: number, currentIndex: number, array: number[]) => number, initialValue: number): number; <U>(callbackfn: (previousValue: U, currentValue: number, currentIndex: number, array: number[]) => U, initialValue: U): U; }; find: { <S extends number>(predicate: (value: number, index: number, obj: number[]) => value is S, thisArg?: any): S; (predicate: (value: number, index: number, obj: number[]) => unknown, thisArg?: any): number; }; findIndex: (predicate: (value: number, index: number, obj: number[]) => unknown, thisArg?: any) => number; fill: (value: number, start?: number, end?: number) => number[]; copyWithin: (target: number, start: number, end?: number) => number[]; entries: () => BuiltinIterator<[number, number], any, any>; keys: () => BuiltinIterator<number, BuiltinIteratorReturn>; values: () => BuiltinIterator<number, any, any>; includes: (searchElement: number, fromIndex?: number) => boolean; flatMap: <U, This = undefined>(callback: (this: This, value: number, index: number, array: number[]) => U | readonly U[], thisArg?: This) => U[]; flat: <A, D extends number = 1>(this: A, depth?: D) => FlatArray<A, D>[]; [Symbol.iterator]: () => BuiltinIterator<number, any, any>; readonly [Symbol.unscopables]: { [x: number]: boolean; length?: boolean; toString?: boolean; toLocaleString?: boolean; pop?: boolean; push?: boolean; concat?: boolean; join?: boolean; reverse?: boolean; shift?: boolean; slice?: boolean; sort?: boolean; splice?: boolean; unshift?: boolean; indexOf?: boolean; lastIndexOf?: boolean; every?: boolean; some?: boolean; forEach?: boolean; map?: boolean; filter?: boolean; reduce?: boolean; reduceRight?: boolean; find?: boolean; findIndex?: boolean; fill?: boolean; copyWithin?: boolean; entries?: boolean; keys?: boolean; values?: boolean; includes?: boolean; flatMap?: boolean; flat?: boolean; [Symbol.iterator]?: boolean; readonly [Symbol.unscopables]?: boolean; }; }
+> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^^^^^^^^^^ ^^^ ^^ ^^ ^^^ ^^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^ ^^^^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^ ^^ ^^^ ^^^^^^^^^^^^^^^^^^^^^^ ^^^^ ^^^^^^^^^^ ^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^ ^^ ^^^ ^^^^^^^^^^^^^^ ^^ ^^ ^^ ^^^^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^ ^^^^^^^^^^^^ ^^^^^^^^^^ ^^^ ^^^^^ ^^^^^^^^^^^^^^^^ ^^^^^^^^^^ ^^^ ^^^^^ ^^^^^^^^^^^^ ^^^^^^^^^^^^^^^^^ ^^^ ^^^^^^^^^^ ^^ ^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^ ^^^ ^ ^^^ ^^^ ^^^^^^^^^^ ^^ ^^ ^^^^^^^^^^^^^^^ ^^ ^^^ ^^^ ^^^^^^^^^^^^ ^^^ ^^^^^^^^^^ ^^ ^^ ^^^^^^^^^^^^^^^ ^^ ^^^ ^^^^^ ^^^^^^^^^^^^ ^^^ ^^^^^^^^^^ ^^ ^^ ^^^^^^^^^^^^^^^ ^^ ^^^ ^^^^^ ^^^^^^^^ ^^ ^^^ ^^^^^^^^^^ ^^ ^^ ^^^^^^^^^^^^^^^^^^ ^^^ ^^^^^^^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^^^ ^^^ ^^^^^^^^^^ ^^ ^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^ ^^^^^^^^^ ^^^ ^^^^^^^^^^ ^^ ^^ ^^^^^^^^^^^^^^^ ^^ ^^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^ ^^^^^^^^^^ ^^^^^^^^^^ ^^ ^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^ ^^^^^^^^^^ ^^^^^^^^^^ ^^ ^^ ^^^^^^^^^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^^^^^^ ^^ ^^^ ^^^^^ ^^^^^^^^^^ ^^ ^^ ^^^^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^ ^^^^^^^^^^ ^^^^^^^^^^ ^^ ^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^ ^^^^^^^^^^ ^^^^^^^^^^ ^^ ^^ ^^^^^^^^^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^^^^^^ ^^ ^^^ ^^^^^ ^^^^^^^^^^ ^^ ^^ ^^^^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^^^ ^^^ ^^^^^^^^^^ ^^ ^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^ ^^^^^^^ ^^^ ^^^^^^^^^^ ^^ ^^ ^^^^^^^^^^^^^^^ ^^ ^^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^ ^^^^^^^^^^ ^^ ^^ ^^^^^^^^^^^^^^^ ^^ ^^^ ^^^^^ ^^^^^^^^^ ^^^^^^^^^^ ^^^ ^^ ^^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^ ^^ ^^ ^^ ^^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^^^^^^^^ ^^^ ^^^^^ ^^^^^^^^^^^^ ^^ ^^^^^^^^^^^^^^ ^^^ ^^^^^^^^ ^^^^^^^^^^ ^^ ^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^^^^^^^^^^ ^^ ^^^^^^^^^ ^^^^^^ ^^^^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+>null as any as { [K in keyof number[] as Exclude<K, "length">]: (number[])[K] } : { [x: number]: number; toString: () => string; toLocaleString: { (): string; (locales: string | string[], options?: Intl.NumberFormatOptions & Intl.DateTimeFormatOptions): string; }; pop: () => number; push: (...items: number[]) => number; concat: { (...items: ConcatArray<number>[]): number[]; (...items: (number | ConcatArray<number>)[]): number[]; }; join: (separator?: string) => string; reverse: () => number[]; shift: () => number; slice: (start?: number, end?: number) => number[]; sort: (compareFn?: (a: number, b: number) => number) => number[]; splice: { (start: number, deleteCount?: number): number[]; (start: number, deleteCount: number, ...items: number[]): number[]; }; unshift: (...items: number[]) => number; indexOf: (searchElement: number, fromIndex?: number) => number; lastIndexOf: (searchElement: number, fromIndex?: number) => number; every: { <S extends number>(predicate: (value: number, index: number, array: number[]) => value is S, thisArg?: any): this is S[]; (predicate: (value: number, index: number, array: number[]) => unknown, thisArg?: any): boolean; }; some: (predicate: (value: number, index: number, array: number[]) => unknown, thisArg?: any) => boolean; forEach: (callbackfn: (value: number, index: number, array: number[]) => void, thisArg?: any) => void; map: <U>(callbackfn: (value: number, index: number, array: number[]) => U, thisArg?: any) => U[]; filter: { <S extends number>(predicate: (value: number, index: number, array: number[]) => value is S, thisArg?: any): S[]; (predicate: (value: number, index: number, array: number[]) => unknown, thisArg?: any): number[]; }; reduce: { (callbackfn: (previousValue: number, currentValue: number, currentIndex: number, array: number[]) => number): number; (callbackfn: (previousValue: number, currentValue: number, currentIndex: number, array: number[]) => number, initialValue: number): number; <U>(callbackfn: (previousValue: U, currentValue: number, currentIndex: number, array: number[]) => U, initialValue: U): U; }; reduceRight: { (callbackfn: (previousValue: number, currentValue: number, currentIndex: number, array: number[]) => number): number; (callbackfn: (previousValue: number, currentValue: number, currentIndex: number, array: number[]) => number, initialValue: number): number; <U>(callbackfn: (previousValue: U, currentValue: number, currentIndex: number, array: number[]) => U, initialValue: U): U; }; find: { <S extends number>(predicate: (value: number, index: number, obj: number[]) => value is S, thisArg?: any): S; (predicate: (value: number, index: number, obj: number[]) => unknown, thisArg?: any): number; }; findIndex: (predicate: (value: number, index: number, obj: number[]) => unknown, thisArg?: any) => number; fill: (value: number, start?: number, end?: number) => number[]; copyWithin: (target: number, start: number, end?: number) => number[]; entries: () => BuiltinIterator<[number, number], any, any>; keys: () => BuiltinIterator<number, BuiltinIteratorReturn>; values: () => BuiltinIterator<number, any, any>; includes: (searchElement: number, fromIndex?: number) => boolean; flatMap: <U, This = undefined>(callback: (this: This, value: number, index: number, array: number[]) => U | readonly U[], thisArg?: This) => U[]; flat: <A, D extends number = 1>(this: A, depth?: D) => FlatArray<A, D>[]; [Symbol.iterator]: () => BuiltinIterator<number, any, any>; readonly [Symbol.unscopables]: { [x: number]: boolean; length?: boolean; toString?: boolean; toLocaleString?: boolean; pop?: boolean; push?: boolean; concat?: boolean; join?: boolean; reverse?: boolean; shift?: boolean; slice?: boolean; sort?: boolean; splice?: boolean; unshift?: boolean; indexOf?: boolean; lastIndexOf?: boolean; every?: boolean; some?: boolean; forEach?: boolean; map?: boolean; filter?: boolean; reduce?: boolean; reduceRight?: boolean; find?: boolean; findIndex?: boolean; fill?: boolean; copyWithin?: boolean; entries?: boolean; keys?: boolean; values?: boolean; includes?: boolean; flatMap?: boolean; flat?: boolean; [Symbol.iterator]?: boolean; readonly [Symbol.unscopables]?: boolean; }; }
+> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^^^^^^^^^^ ^^^ ^^ ^^ ^^^ ^^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^ ^^^^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^ ^^ ^^^ ^^^^^^^^^^^^^^^^^^^^^^ ^^^^ ^^^^^^^^^^ ^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^ ^^ ^^^ ^^^^^^^^^^^^^^ ^^ ^^ ^^ ^^^^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^ ^^^^^^^^^^^^ ^^^^^^^^^^ ^^^ ^^^^^ ^^^^^^^^^^^^^^^^ ^^^^^^^^^^ ^^^ ^^^^^ ^^^^^^^^^^^^ ^^^^^^^^^^^^^^^^^ ^^^ ^^^^^^^^^^ ^^ ^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^ ^^^ ^ ^^^ ^^^ ^^^^^^^^^^ ^^ ^^ ^^^^^^^^^^^^^^^ ^^ ^^^ ^^^ ^^^^^^^^^^^^ ^^^ ^^^^^^^^^^ ^^ ^^ ^^^^^^^^^^^^^^^ ^^ ^^^ ^^^^^ ^^^^^^^^^^^^ ^^^ ^^^^^^^^^^ ^^ ^^ ^^^^^^^^^^^^^^^ ^^ ^^^ ^^^^^ ^^^^^^^^ ^^ ^^^ ^^^^^^^^^^ ^^ ^^ ^^^^^^^^^^^^^^^^^^ ^^^ ^^^^^^^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^^^ ^^^ ^^^^^^^^^^ ^^ ^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^ ^^^^^^^^^ ^^^ ^^^^^^^^^^ ^^ ^^ ^^^^^^^^^^^^^^^ ^^ ^^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^ ^^^^^^^^^^ ^^^^^^^^^^ ^^ ^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^ ^^^^^^^^^^ ^^^^^^^^^^ ^^ ^^ ^^^^^^^^^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^^^^^^ ^^ ^^^ ^^^^^ ^^^^^^^^^^ ^^ ^^ ^^^^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^ ^^^^^^^^^^ ^^^^^^^^^^ ^^ ^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^ ^^^^^^^^^^ ^^^^^^^^^^ ^^ ^^ ^^^^^^^^^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^^^^^^ ^^ ^^^ ^^^^^ ^^^^^^^^^^ ^^ ^^ ^^^^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^^^ ^^^ ^^^^^^^^^^ ^^ ^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^ ^^^^^^^ ^^^ ^^^^^^^^^^ ^^ ^^ ^^^^^^^^^^^^^^^ ^^ ^^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^ ^^^^^^^^^^ ^^ ^^ ^^^^^^^^^^^^^^^ ^^ ^^^ ^^^^^ ^^^^^^^^^ ^^^^^^^^^^ ^^^ ^^ ^^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^ ^^ ^^ ^^ ^^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^^^^^^^^ ^^^ ^^^^^ ^^^^^^^^^^^^ ^^ ^^^^^^^^^^^^^^ ^^^ ^^^^^^^^ ^^^^^^^^^^ ^^ ^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^^^^^^^^^^ ^^ ^^^^^^^^^ ^^^^^^ ^^^^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
>null as any : any
diff --git a/tests/baselines/reference/modularizeLibrary_NoErrorDuplicateLibOptions1.types b/tests/baselines/reference/modularizeLibrary_NoErrorDuplicateLibOptions1.types
index 79250a582cd45..075659bb6c643 100644
--- a/tests/baselines/reference/modularizeLibrary_NoErrorDuplicateLibOptions1.types
+++ b/tests/baselines/reference/modularizeLibrary_NoErrorDuplicateLibOptions1.types
@@ -58,14 +58,14 @@ m.clear();
// Using ES6 iterable
m.keys();
->m.keys() : IterableIterator<string>
-> : ^^^^^^^^^^^^^^^^^^^^^^^^
->m.keys : () => IterableIterator<string>
-> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+>m.keys() : BuiltinIterator<string, any, any>
+> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+>m.keys : () => BuiltinIterator<string, any, any>
+> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
>m : Map<string, number>
> : ^^^^^^^^^^^^^^^^^^^
->keys : () => IterableIterator<string>
-> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+>keys : () => BuiltinIterator<string, any, any>
+> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
// Using ES6 function
function Baz() { }
diff --git a/tests/baselines/reference/modularizeLibrary_NoErrorDuplicateLibOptions2.types b/tests/baselines/reference/modularizeLibrary_NoErrorDuplicateLibOptions2.types
index 55d4b9bcb32fc..21ebd84450062 100644
--- a/tests/baselines/reference/modularizeLibrary_NoErrorDuplicateLibOptions2.types
+++ b/tests/baselines/reference/modularizeLibrary_NoErrorDuplicateLibOptions2.types
@@ -58,14 +58,14 @@ m.clear();
// Using ES6 iterable
m.keys();
->m.keys() : IterableIterator<string>
-> : ^^^^^^^^^^^^^^^^^^^^^^^^
->m.keys : () => IterableIterator<string>
-> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+>m.keys() : BuiltinIterator<string, any, any>
+> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+>m.keys : () => BuiltinIterator<string, any, any>
+> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
>m : Map<string, number>
> : ^^^^^^^^^^^^^^^^^^^
->keys : () => IterableIterator<string>
-> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+>keys : () => BuiltinIterator<string, any, any>
+> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
// Using ES6 function
function Baz() { }
diff --git a/tests/baselines/reference/modularizeLibrary_TargetES5UsingES6Lib.types b/tests/baselines/reference/modularizeLibrary_TargetES5UsingES6Lib.types
index a8e7094e15925..14688b34b1362 100644
--- a/tests/baselines/reference/modularizeLibrary_TargetES5UsingES6Lib.types
+++ b/tests/baselines/reference/modularizeLibrary_TargetES5UsingES6Lib.types
@@ -58,14 +58,14 @@ m.clear();
// Using ES6 iterable
m.keys();
->m.keys() : IterableIterator<string>
-> : ^^^^^^^^^^^^^^^^^^^^^^^^
->m.keys : () => IterableIterator<string>
-> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+>m.keys() : BuiltinIterator<string, any, any>
+> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+>m.keys : () => BuiltinIterator<string, any, any>
+> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
>m : Map<string, number>
> : ^^^^^^^^^^^^^^^^^^^
->keys : () => IterableIterator<string>
-> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+>keys : () => BuiltinIterator<string, any, any>
+> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
// Using ES6 function
function Baz() { }
diff --git a/tests/baselines/reference/modularizeLibrary_TargetES6UsingES6Lib.types b/tests/baselines/reference/modularizeLibrary_TargetES6UsingES6Lib.types
index cb5bfa219fe72..67cc3c013d5a8 100644
--- a/tests/baselines/reference/modularizeLibrary_TargetES6UsingES6Lib.types
+++ b/tests/baselines/reference/modularizeLibrary_TargetES6UsingES6Lib.types
@@ -58,14 +58,14 @@ m.clear();
// Using ES6 iterable
m.keys();
->m.keys() : IterableIterator<string>
-> : ^^^^^^^^^^^^^^^^^^^^^^^^
->m.keys : () => IterableIterator<string>
-> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+>m.keys() : BuiltinIterator<string, any, any>
+> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+>m.keys : () => BuiltinIterator<string, any, any>
+> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
>m : Map<string, number>
> : ^^^^^^^^^^^^^^^^^^^
->keys : () => IterableIterator<string>
-> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+>keys : () => BuiltinIterator<string, any, any>
+> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
// Using ES6 function
function Baz() { }
diff --git a/tests/baselines/reference/modulePreserve2.trace.json b/tests/baselines/reference/modulePreserve2.trace.json
index cdf0c117a0259..3954959946585 100644
--- a/tests/baselines/reference/modulePreserve2.trace.json
+++ b/tests/baselines/reference/modulePreserve2.trace.json
@@ -887,6 +887,18 @@
"Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
"Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
"======== Module name '@typescript/lib-esnext/string' was not resolved. ========",
+ "======== Resolving module '@typescript/lib-esnext/iterator' from '/.src/__lib_node_modules_lookup_lib.esnext.iterator.d.ts__.ts'. ========",
+ "Explicitly specified module resolution kind: 'Node10'.",
+ "Loading module '@typescript/lib-esnext/iterator' from 'node_modules' folder, target file types: TypeScript, Declaration.",
+ "Searching all ancestor node_modules directories for preferred extensions: TypeScript, Declaration.",
+ "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
+ "Scoped package detected, looking in 'typescript__lib-esnext/iterator'",
+ "Directory '/node_modules/@types' does not exist, skipping all lookups in it.",
+ "Scoped package detected, looking in 'typescript__lib-esnext/iterator'",
+ "Loading module '@typescript/lib-esnext/iterator' from 'node_modules' folder, target file types: JavaScript.",
+ "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
+ "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
+ "======== Module name '@typescript/lib-esnext/iterator' was not resolved. ========",
"======== Resolving module '@typescript/lib-dom' from '/.src/__lib_node_modules_lookup_lib.dom.d.ts__.ts'. ========",
"Explicitly specified module resolution kind: 'Node10'.",
"Loading module '@typescript/lib-dom' from 'node_modules' folder, target file types: TypeScript, Declaration.",
diff --git a/tests/baselines/reference/modulePreserve3.trace.json b/tests/baselines/reference/modulePreserve3.trace.json
index 6131b1b5063eb..59645b4447943 100644
--- a/tests/baselines/reference/modulePreserve3.trace.json
+++ b/tests/baselines/reference/modulePreserve3.trace.json
@@ -815,6 +815,17 @@
"Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
"Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
"======== Module name '@typescript/lib-esnext/string' was not resolved. ========",
+ "======== Resolving module '@typescript/lib-esnext/iterator' from '/.src/__lib_node_modules_lookup_lib.esnext.iterator.d.ts__.ts'. ========",
+ "Explicitly specified module resolution kind: 'Node10'.",
+ "Loading module '@typescript/lib-esnext/iterator' from 'node_modules' folder, target file types: TypeScript, Declaration.",
+ "Searching all ancestor node_modules directories for preferred extensions: TypeScript, Declaration.",
+ "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
+ "Scoped package detected, looking in 'typescript__lib-esnext/iterator'",
+ "Scoped package detected, looking in 'typescript__lib-esnext/iterator'",
+ "Loading module '@typescript/lib-esnext/iterator' from 'node_modules' folder, target file types: JavaScript.",
+ "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
+ "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
+ "======== Module name '@typescript/lib-esnext/iterator' was not resolved. ========",
"======== Resolving module '@typescript/lib-dom' from '/.src/__lib_node_modules_lookup_lib.dom.d.ts__.ts'. ========",
"Explicitly specified module resolution kind: 'Node10'.",
"Loading module '@typescript/lib-dom' from 'node_modules' folder, target file types: TypeScript, Declaration.",
diff --git a/tests/baselines/reference/narrowingPastLastAssignment.types b/tests/baselines/reference/narrowingPastLastAssignment.types
index 16513a09fdfe8..ba185b982df4f 100644
--- a/tests/baselines/reference/narrowingPastLastAssignment.types
+++ b/tests/baselines/reference/narrowingPastLastAssignment.types
@@ -1,5 +1,9 @@
//// [tests/cases/compiler/narrowingPastLastAssignment.ts] ////
+=== Performance Stats ===
+Type Count: 1,000
+Instantiation count: 1,000
+
=== narrowingPastLastAssignment.ts ===
function action(f: Function) {}
>action : (f: Function) => void
diff --git a/tests/baselines/reference/nodeModulesExportsBlocksTypesVersions(module=nodenext).trace.json b/tests/baselines/reference/nodeModulesExportsBlocksTypesVersions(module=nodenext).trace.json
index f4021f2e67747..99162f295782b 100644
--- a/tests/baselines/reference/nodeModulesExportsBlocksTypesVersions(module=nodenext).trace.json
+++ b/tests/baselines/reference/nodeModulesExportsBlocksTypesVersions(module=nodenext).trace.json
@@ -1203,6 +1203,20 @@
"======== Module name '@typescript/lib-esnext/string' was not resolved. ========",
"File '/.ts/package.json' does not exist according to earlier cached lookups.",
"File '/package.json' does not exist according to earlier cached lookups.",
+ "======== Resolving module '@typescript/lib-esnext/iterator' from '/.src/__lib_node_modules_lookup_lib.esnext.iterator.d.ts__.ts'. ========",
+ "Explicitly specified module resolution kind: 'Node10'.",
+ "Loading module '@typescript/lib-esnext/iterator' from 'node_modules' folder, target file types: TypeScript, Declaration.",
+ "Searching all ancestor node_modules directories for preferred extensions: TypeScript, Declaration.",
+ "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
+ "Scoped package detected, looking in 'typescript__lib-esnext/iterator'",
+ "Directory '/node_modules/@types' does not exist, skipping all lookups in it.",
+ "Scoped package detected, looking in 'typescript__lib-esnext/iterator'",
+ "Loading module '@typescript/lib-esnext/iterator' from 'node_modules' folder, target file types: JavaScript.",
+ "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
+ "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
+ "======== Module name '@typescript/lib-esnext/iterator' was not resolved. ========",
+ "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+ "File '/package.json' does not exist according to earlier cached lookups.",
"======== Resolving module '@typescript/lib-dom' from '/.src/__lib_node_modules_lookup_lib.dom.d.ts__.ts'. ========",
"Explicitly specified module resolution kind: 'Node10'.",
"Loading module '@typescript/lib-dom' from 'node_modules' folder, target file types: TypeScript, Declaration.",
diff --git a/tests/baselines/reference/nodeModulesPackageImports(module=nodenext).trace.json b/tests/baselines/reference/nodeModulesPackageImports(module=nodenext).trace.json
index 928b94be2e2c7..a464a66235296 100644
--- a/tests/baselines/reference/nodeModulesPackageImports(module=nodenext).trace.json
+++ b/tests/baselines/reference/nodeModulesPackageImports(module=nodenext).trace.json
@@ -1148,6 +1148,21 @@
"======== Module name '@typescript/lib-esnext/string' was not resolved. ========",
"File '/.ts/package.json' does not exist according to earlier cached lookups.",
"File '/package.json' does not exist according to earlier cached lookups.",
+ "======== Resolving module '@typescript/lib-esnext/iterator' from '/.src/__lib_node_modules_lookup_lib.esnext.iterator.d.ts__.ts'. ========",
+ "Explicitly specified module resolution kind: 'Node10'.",
+ "Loading module '@typescript/lib-esnext/iterator' from 'node_modules' folder, target file types: TypeScript, Declaration.",
+ "Searching all ancestor node_modules directories for preferred extensions: TypeScript, Declaration.",
+ "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
+ "Scoped package detected, looking in 'typescript__lib-esnext/iterator'",
+ "Directory '/node_modules' does not exist, skipping all lookups in it.",
+ "Scoped package detected, looking in 'typescript__lib-esnext/iterator'",
+ "Loading module '@typescript/lib-esnext/iterator' from 'node_modules' folder, target file types: JavaScript.",
+ "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
+ "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
+ "Directory '/node_modules' does not exist, skipping all lookups in it.",
+ "======== Module name '@typescript/lib-esnext/iterator' was not resolved. ========",
+ "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+ "File '/package.json' does not exist according to earlier cached lookups.",
"======== Resolving module '@typescript/lib-dom' from '/.src/__lib_node_modules_lookup_lib.dom.d.ts__.ts'. ========",
"Explicitly specified module resolution kind: 'Node10'.",
"Loading module '@typescript/lib-dom' from 'node_modules' folder, target file types: TypeScript, Declaration.",
diff --git a/tests/baselines/reference/nodeModulesPackagePatternExportsTrailers(module=nodenext).trace.json b/tests/baselines/reference/nodeModulesPackagePatternExportsTrailers(module=nodenext).trace.json
index 24d3f4ba59a60..43e8b3f92de49 100644
--- a/tests/baselines/reference/nodeModulesPackagePatternExportsTrailers(module=nodenext).trace.json
+++ b/tests/baselines/reference/nodeModulesPackagePatternExportsTrailers(module=nodenext).trace.json
@@ -1184,6 +1184,20 @@
"======== Module name '@typescript/lib-esnext/string' was not resolved. ========",
"File '/.ts/package.json' does not exist according to earlier cached lookups.",
"File '/package.json' does not exist according to earlier cached lookups.",
+ "======== Resolving module '@typescript/lib-esnext/iterator' from '/.src/__lib_node_modules_lookup_lib.esnext.iterator.d.ts__.ts'. ========",
+ "Explicitly specified module resolution kind: 'Node10'.",
+ "Loading module '@typescript/lib-esnext/iterator' from 'node_modules' folder, target file types: TypeScript, Declaration.",
+ "Searching all ancestor node_modules directories for preferred extensions: TypeScript, Declaration.",
+ "Directory '/.src/node_modules/@types' does not exist, skipping all lookups in it.",
+ "Scoped package detected, looking in 'typescript__lib-esnext/iterator'",
+ "Directory '/node_modules' does not exist, skipping all lookups in it.",
+ "Scoped package detected, looking in 'typescript__lib-esnext/iterator'",
+ "Loading module '@typescript/lib-esnext/iterator' from 'node_modules' folder, target file types: JavaScript.",
+ "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
+ "Directory '/node_modules' does not exist, skipping all lookups in it.",
+ "======== Module name '@typescript/lib-esnext/iterator' was not resolved. ========",
+ "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+ "File '/package.json' does not exist according to earlier cached lookups.",
"======== Resolving module '@typescript/lib-dom' from '/.src/__lib_node_modules_lookup_lib.dom.d.ts__.ts'. ========",
"Explicitly specified module resolution kind: 'Node10'.",
"Loading module '@typescript/lib-dom' from 'node_modules' folder, target file types: TypeScript, Declaration.",
diff --git a/tests/baselines/reference/objectGroupBy.types b/tests/baselines/reference/objectGroupBy.types
index ec9a37f131b20..f836f949d68a4 100644
--- a/tests/baselines/reference/objectGroupBy.types
+++ b/tests/baselines/reference/objectGroupBy.types
@@ -1,5 +1,9 @@
//// [tests/cases/compiler/objectGroupBy.ts] ////
+=== Performance Stats ===
+Type Count: 1,000
+Instantiation count: 2,500
+
=== objectGroupBy.ts ===
const basic = Object.groupBy([0, 2, 8], x => x < 5 ? 'small' : 'large');
>basic : Partial<Record<"small" | "large", number[]>>
diff --git a/tests/baselines/reference/parenthesizedJSDocCastAtReturnStatement.types b/tests/baselines/reference/parenthesizedJSDocCastAtReturnStatement.types
index 25270ffaee519..e138921e963b2 100644
--- a/tests/baselines/reference/parenthesizedJSDocCastAtReturnStatement.types
+++ b/tests/baselines/reference/parenthesizedJSDocCastAtReturnStatement.types
@@ -1,5 +1,9 @@
//// [tests/cases/compiler/parenthesizedJSDocCastAtReturnStatement.ts] ////
+=== Performance Stats ===
+Type Count: 1,000
+Instantiation count: 1,000
+
=== index.js ===
/** @type {Map<string, string | Set<string>>} */
const cache = new Map()
diff --git a/tests/baselines/reference/reactJsxReactResolvedNodeNext.trace.json b/tests/baselines/reference/reactJsxReactResolvedNodeNext.trace.json
index e09f66f8ac9aa..33b3667543363 100644
--- a/tests/baselines/reference/reactJsxReactResolvedNodeNext.trace.json
+++ b/tests/baselines/reference/reactJsxReactResolvedNodeNext.trace.json
@@ -977,6 +977,19 @@
"======== Module name '@typescript/lib-esnext/string' was not resolved. ========",
"File '/.ts/package.json' does not exist according to earlier cached lookups.",
"File '/package.json' does not exist according to earlier cached lookups.",
+ "======== Resolving module '@typescript/lib-esnext/iterator' from '/.src/__lib_node_modules_lookup_lib.esnext.iterator.d.ts__.ts'. ========",
+ "Explicitly specified module resolution kind: 'Node10'.",
+ "Loading module '@typescript/lib-esnext/iterator' from 'node_modules' folder, target file types: TypeScript, Declaration.",
+ "Searching all ancestor node_modules directories for preferred extensions: TypeScript, Declaration.",
+ "Scoped package detected, looking in 'typescript__lib-esnext/iterator'",
+ "Directory '/node_modules' does not exist, skipping all lookups in it.",
+ "Scoped package detected, looking in 'typescript__lib-esnext/iterator'",
+ "Loading module '@typescript/lib-esnext/iterator' from 'node_modules' folder, target file types: JavaScript.",
+ "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
+ "Directory '/node_modules' does not exist, skipping all lookups in it.",
+ "======== Module name '@typescript/lib-esnext/iterator' was not resolved. ========",
+ "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+ "File '/package.json' does not exist according to earlier cached lookups.",
"======== Resolving module '@typescript/lib-dom' from '/.src/__lib_node_modules_lookup_lib.dom.d.ts__.ts'. ========",
"Explicitly specified module resolution kind: 'Node10'.",
"Loading module '@typescript/lib-dom' from 'node_modules' folder, target file types: TypeScript, Declaration.",
diff --git a/tests/baselines/reference/reactJsxReactResolvedNodeNextEsm.trace.json b/tests/baselines/reference/reactJsxReactResolvedNodeNextEsm.trace.json
index 371f19d242f39..f8b98bdb4e443 100644
--- a/tests/baselines/reference/reactJsxReactResolvedNodeNextEsm.trace.json
+++ b/tests/baselines/reference/reactJsxReactResolvedNodeNextEsm.trace.json
@@ -977,6 +977,19 @@
"======== Module name '@typescript/lib-esnext/string' was not resolved. ========",
"File '/.ts/package.json' does not exist according to earlier cached lookups.",
"File '/package.json' does not exist according to earlier cached lookups.",
+ "======== Resolving module '@typescript/lib-esnext/iterator' from '/.src/__lib_node_modules_lookup_lib.esnext.iterator.d.ts__.ts'. ========",
+ "Explicitly specified module resolution kind: 'Node10'.",
+ "Loading module '@typescript/lib-esnext/iterator' from 'node_modules' folder, target file types: TypeScript, Declaration.",
+ "Searching all ancestor node_modules directories for preferred extensions: TypeScript, Declaration.",
+ "Scoped package detected, looking in 'typescript__lib-esnext/iterator'",
+ "Directory '/node_modules' does not exist, skipping all lookups in it.",
+ "Scoped package detected, looking in 'typescript__lib-esnext/iterator'",
+ "Loading module '@typescript/lib-esnext/iterator' from 'node_modules' folder, target file types: JavaScript.",
+ "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
+ "Directory '/node_modules' does not exist, skipping all lookups in it.",
+ "======== Module name '@typescript/lib-esnext/iterator' was not resolved. ========",
+ "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+ "File '/package.json' does not exist according to earlier cached lookups.",
"======== Resolving module '@typescript/lib-dom' from '/.src/__lib_node_modules_lookup_lib.dom.d.ts__.ts'. ========",
"Explicitly specified module resolution kind: 'Node10'.",
"Loading module '@typescript/lib-dom' from 'node_modules' folder, target file types: TypeScript, Declaration.",
diff --git a/tests/baselines/reference/regexMatchAll-esnext.types b/tests/baselines/reference/regexMatchAll-esnext.types
index 222721c3f5927..80790de11283e 100644
--- a/tests/baselines/reference/regexMatchAll-esnext.types
+++ b/tests/baselines/reference/regexMatchAll-esnext.types
@@ -2,12 +2,12 @@
=== regexMatchAll-esnext.ts ===
const matches = /\w/g[Symbol.matchAll]("matchAll");
->matches : IterableIterator<RegExpMatchArray>
-> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
->/\w/g[Symbol.matchAll]("matchAll") : IterableIterator<RegExpMatchArray>
-> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
->/\w/g[Symbol.matchAll] : (str: string) => IterableIterator<RegExpMatchArray, BuiltinIteratorReturn>
-> : ^ ^^ ^^^^^
+>matches : BuiltinIterator<RegExpMatchArray, any, any>
+> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+>/\w/g[Symbol.matchAll]("matchAll") : BuiltinIterator<RegExpMatchArray, any, any>
+> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+>/\w/g[Symbol.matchAll] : (str: string) => BuiltinIterator<RegExpMatchArray, BuiltinIteratorReturn>
+> : ^ ^^ ^^^^^
>/\w/g : RegExp
> : ^^^^^^
>Symbol.matchAll : unique symbol
@@ -26,8 +26,8 @@ const array = [...matches];
> : ^^^^^^^^^^^^^^^^^^
>...matches : RegExpMatchArray
> : ^^^^^^^^^^^^^^^^
->matches : IterableIterator<RegExpMatchArray>
-> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+>matches : BuiltinIterator<RegExpMatchArray, any, any>
+> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
const { index, input } = array[0];
>index : number
diff --git a/tests/baselines/reference/regexMatchAll.types b/tests/baselines/reference/regexMatchAll.types
index 53a391b22ee3d..3237c73dba1d3 100644
--- a/tests/baselines/reference/regexMatchAll.types
+++ b/tests/baselines/reference/regexMatchAll.types
@@ -2,12 +2,12 @@
=== regexMatchAll.ts ===
const matches = /\w/g[Symbol.matchAll]("matchAll");
->matches : IterableIterator<RegExpMatchArray>
-> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
->/\w/g[Symbol.matchAll]("matchAll") : IterableIterator<RegExpMatchArray>
-> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
->/\w/g[Symbol.matchAll] : (str: string) => IterableIterator<RegExpMatchArray, BuiltinIteratorReturn>
-> : ^ ^^ ^^^^^
+>matches : BuiltinIterator<RegExpMatchArray, any, any>
+> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+>/\w/g[Symbol.matchAll]("matchAll") : BuiltinIterator<RegExpMatchArray, any, any>
+> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+>/\w/g[Symbol.matchAll] : (str: string) => BuiltinIterator<RegExpMatchArray, BuiltinIteratorReturn>
+> : ^ ^^ ^^^^^
>/\w/g : RegExp
> : ^^^^^^
>Symbol.matchAll : unique symbol
@@ -26,8 +26,8 @@ const array = [...matches];
> : ^^^^^^^^^^^^^^^^^^
>...matches : RegExpMatchArray
> : ^^^^^^^^^^^^^^^^
->matches : IterableIterator<RegExpMatchArray>
-> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+>matches : BuiltinIterator<RegExpMatchArray, any, any>
+> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
const { index, input } = array[0];
>index : number
diff --git a/tests/baselines/reference/stringMatchAll.types b/tests/baselines/reference/stringMatchAll.types
index 12f4460a2e8d6..13e45697d8bcd 100644
--- a/tests/baselines/reference/stringMatchAll.types
+++ b/tests/baselines/reference/stringMatchAll.types
@@ -2,16 +2,16 @@
=== stringMatchAll.ts ===
const matches = "matchAll".matchAll(/\w/g);
->matches : IterableIterator<RegExpExecArray>
-> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
->"matchAll".matchAll(/\w/g) : IterableIterator<RegExpExecArray>
-> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
->"matchAll".matchAll : (regexp: RegExp) => IterableIterator<RegExpExecArray, BuiltinIteratorReturn>
-> : ^ ^^ ^^^^^
+>matches : BuiltinIterator<RegExpExecArray, any, any>
+> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+>"matchAll".matchAll(/\w/g) : BuiltinIterator<RegExpExecArray, any, any>
+> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+>"matchAll".matchAll : (regexp: RegExp) => BuiltinIterator<RegExpExecArray, BuiltinIteratorReturn>
+> : ^ ^^ ^^^^^
>"matchAll" : "matchAll"
> : ^^^^^^^^^^
->matchAll : (regexp: RegExp) => IterableIterator<RegExpExecArray, BuiltinIteratorReturn>
-> : ^ ^^ ^^^^^
+>matchAll : (regexp: RegExp) => BuiltinIterator<RegExpExecArray, BuiltinIteratorReturn>
+> : ^ ^^ ^^^^^
>/\w/g : RegExp
> : ^^^^^^
@@ -22,8 +22,8 @@ const array = [...matches];
> : ^^^^^^^^^^^^^^^^^
>...matches : RegExpExecArray
> : ^^^^^^^^^^^^^^^
->matches : IterableIterator<RegExpExecArray>
-> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+>matches : BuiltinIterator<RegExpExecArray, any, any>
+> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
const { index, input } = array[0];
>index : number
diff --git a/tests/baselines/reference/substitutionTypePassedToExtends.types b/tests/baselines/reference/substitutionTypePassedToExtends.types
index c8aee67f83cec..a5d81c4699c7a 100644
--- a/tests/baselines/reference/substitutionTypePassedToExtends.types
+++ b/tests/baselines/reference/substitutionTypePassedToExtends.types
@@ -1,5 +1,9 @@
//// [tests/cases/compiler/substitutionTypePassedToExtends.ts] ////
+=== Performance Stats ===
+Type Count: 500 -> 1,000
+Instantiation count: 100 -> 1,000
+
=== substitutionTypePassedToExtends.ts ===
type Foo1<A,B> = [A, B] extends unknown[][] ? Bar1<[A, B]> : 'else'
>Foo1 : Foo1<A, B>
diff --git a/tests/baselines/reference/tsc/runWithoutArgs/does-not-add-color-when-NO_COLOR-is-set.js b/tests/baselines/reference/tsc/runWithoutArgs/does-not-add-color-when-NO_COLOR-is-set.js
index bafc6105409ac..aa5a75e955390 100644
--- a/tests/baselines/reference/tsc/runWithoutArgs/does-not-add-color-when-NO_COLOR-is-set.js
+++ b/tests/baselines/reference/tsc/runWithoutArgs/does-not-add-color-when-NO_COLOR-is-set.js
@@ -116,7 +116,7 @@ default: undefined
--lib
Specify a set of bundled library declaration files that describe the target runtime environment.
-one or more: es5, es6/es2015, es7/es2016, es2017, es2018, es2019, es2020, es2021, es2022, es2023, esnext, dom, dom.iterable, dom.asynciterable, webworker, webworker.importscripts, webworker.iterable, webworker.asynciterable, scripthost, es2015.core, es2015.collection, es2015.generator, es2015.iterable, es2015.promise, es2015.proxy, es2015.reflect, es2015.symbol, es2015.symbol.wellknown, es2016.array.include, es2016.intl, es2017.date, es2017.object, es2017.sharedmemory, es2017.string, es2017.intl, es2017.typedarrays, es2018.asyncgenerator, es2018.asynciterable/esnext.asynciterable, es2018.intl, es2018.promise, es2018.regexp, es2019.array, es2019.object, es2019.string, es2019.symbol/esnext.symbol, es2019.intl, es2020.bigint/esnext.bigint, es2020.date, es2020.promise, es2020.sharedmemory, es2020.string, es2020.symbol.wellknown, es2020.intl, es2020.number, es2021.promise, es2021.string, es2021.weakref/esnext.weakref, es2021.intl, es2022.array, es2022.error, es2022.intl, es2022.object, es2022.sharedmemory, es2022.string, es2022.regexp, es2023.array, es2023.collection, es2023.intl, esnext.array, esnext.collection, esnext.intl, esnext.disposable, esnext.string, esnext.promise, esnext.decorators, esnext.object, esnext.regexp, decorators, decorators.legacy
+one or more: es5, es6/es2015, es7/es2016, es2017, es2018, es2019, es2020, es2021, es2022, es2023, esnext, dom, dom.iterable, dom.asynciterable, webworker, webworker.importscripts, webworker.iterable, webworker.asynciterable, scripthost, es2015.core, es2015.collection, es2015.generator, es2015.iterable, es2015.promise, es2015.proxy, es2015.reflect, es2015.symbol, es2015.symbol.wellknown, es2016.array.include, es2016.intl, es2017.date, es2017.object, es2017.sharedmemory, es2017.string, es2017.intl, es2017.typedarrays, es2018.asyncgenerator, es2018.asynciterable/esnext.asynciterable, es2018.intl, es2018.promise, es2018.regexp, es2019.array, es2019.object, es2019.string, es2019.symbol/esnext.symbol, es2019.intl, es2020.bigint/esnext.bigint, es2020.date, es2020.promise, es2020.sharedmemory, es2020.string, es2020.symbol.wellknown, es2020.intl, es2020.number, es2021.promise, es2021.string, es2021.weakref/esnext.weakref, es2021.intl, es2022.array, es2022.error, es2022.intl, es2022.object, es2022.sharedmemory, es2022.string, es2022.regexp, es2023.array, es2023.collection, es2023.intl, esnext.array, esnext.collection, esnext.intl, esnext.disposable, esnext.string, esnext.promise, esnext.decorators, esnext.object, esnext.regexp, esnext.iterator, decorators, decorators.legacy
default: undefined
--allowJs
diff --git a/tests/baselines/reference/tsc/runWithoutArgs/show-help-with-ExitStatus.DiagnosticsPresent_OutputsSkipped-when-host-can't-provide-terminal-width.js b/tests/baselines/reference/tsc/runWithoutArgs/show-help-with-ExitStatus.DiagnosticsPresent_OutputsSkipped-when-host-can't-provide-terminal-width.js
index 5d298153e39e7..f9d8afa189b0d 100644
--- a/tests/baselines/reference/tsc/runWithoutArgs/show-help-with-ExitStatus.DiagnosticsPresent_OutputsSkipped-when-host-can't-provide-terminal-width.js
+++ b/tests/baselines/reference/tsc/runWithoutArgs/show-help-with-ExitStatus.DiagnosticsPresent_OutputsSkipped-when-host-can't-provide-terminal-width.js
@@ -116,7 +116,7 @@ default: undefined
[94m--lib[39m
Specify a set of bundled library declaration files that describe the target runtime environment.
-one or more: es5, es6/es2015, es7/es2016, es2017, es2018, es2019, es2020, es2021, es2022, es2023, esnext, dom, dom.iterable, dom.asynciterable, webworker, webworker.importscripts, webworker.iterable, webworker.asynciterable, scripthost, es2015.core, es2015.collection, es2015.generator, es2015.iterable, es2015.promise, es2015.proxy, es2015.reflect, es2015.symbol, es2015.symbol.wellknown, es2016.array.include, es2016.intl, es2017.date, es2017.object, es2017.sharedmemory, es2017.string, es2017.intl, es2017.typedarrays, es2018.asyncgenerator, es2018.asynciterable/esnext.asynciterable, es2018.intl, es2018.promise, es2018.regexp, es2019.array, es2019.object, es2019.string, es2019.symbol/esnext.symbol, es2019.intl, es2020.bigint/esnext.bigint, es2020.date, es2020.promise, es2020.sharedmemory, es2020.string, es2020.symbol.wellknown, es2020.intl, es2020.number, es2021.promise, es2021.string, es2021.weakref/esnext.weakref, es2021.intl, es2022.array, es2022.error, es2022.intl, es2022.object, es2022.sharedmemory, es2022.string, es2022.regexp, es2023.array, es2023.collection, es2023.intl, esnext.array, esnext.collection, esnext.intl, esnext.disposable, esnext.string, esnext.promise, esnext.decorators, esnext.object, esnext.regexp, decorators, decorators.legacy
+one or more: es5, es6/es2015, es7/es2016, es2017, es2018, es2019, es2020, es2021, es2022, es2023, esnext, dom, dom.iterable, dom.asynciterable, webworker, webworker.importscripts, webworker.iterable, webworker.asynciterable, scripthost, es2015.core, es2015.collection, es2015.generator, es2015.iterable, es2015.promise, es2015.proxy, es2015.reflect, es2015.symbol, es2015.symbol.wellknown, es2016.array.include, es2016.intl, es2017.date, es2017.object, es2017.sharedmemory, es2017.string, es2017.intl, es2017.typedarrays, es2018.asyncgenerator, es2018.asynciterable/esnext.asynciterable, es2018.intl, es2018.promise, es2018.regexp, es2019.array, es2019.object, es2019.string, es2019.symbol/esnext.symbol, es2019.intl, es2020.bigint/esnext.bigint, es2020.date, es2020.promise, es2020.sharedmemory, es2020.string, es2020.symbol.wellknown, es2020.intl, es2020.number, es2021.promise, es2021.string, es2021.weakref/esnext.weakref, es2021.intl, es2022.array, es2022.error, es2022.intl, es2022.object, es2022.sharedmemory, es2022.string, es2022.regexp, es2023.array, es2023.collection, es2023.intl, esnext.array, esnext.collection, esnext.intl, esnext.disposable, esnext.string, esnext.promise, esnext.decorators, esnext.object, esnext.regexp, esnext.iterator, decorators, decorators.legacy
default: undefined
[94m--allowJs[39m
diff --git a/tests/baselines/reference/tsc/runWithoutArgs/show-help-with-ExitStatus.DiagnosticsPresent_OutputsSkipped.js b/tests/baselines/reference/tsc/runWithoutArgs/show-help-with-ExitStatus.DiagnosticsPresent_OutputsSkipped.js
index 5d298153e39e7..f9d8afa189b0d 100644
--- a/tests/baselines/reference/tsc/runWithoutArgs/show-help-with-ExitStatus.DiagnosticsPresent_OutputsSkipped.js
+++ b/tests/baselines/reference/tsc/runWithoutArgs/show-help-with-ExitStatus.DiagnosticsPresent_OutputsSkipped.js
@@ -116,7 +116,7 @@ default: undefined
[94m--lib[39m
Specify a set of bundled library declaration files that describe the target runtime environment.
-one or more: es5, es6/es2015, es7/es2016, es2017, es2018, es2019, es2020, es2021, es2022, es2023, esnext, dom, dom.iterable, dom.asynciterable, webworker, webworker.importscripts, webworker.iterable, webworker.asynciterable, scripthost, es2015.core, es2015.collection, es2015.generator, es2015.iterable, es2015.promise, es2015.proxy, es2015.reflect, es2015.symbol, es2015.symbol.wellknown, es2016.array.include, es2016.intl, es2017.date, es2017.object, es2017.sharedmemory, es2017.string, es2017.intl, es2017.typedarrays, es2018.asyncgenerator, es2018.asynciterable/esnext.asynciterable, es2018.intl, es2018.promise, es2018.regexp, es2019.array, es2019.object, es2019.string, es2019.symbol/esnext.symbol, es2019.intl, es2020.bigint/esnext.bigint, es2020.date, es2020.promise, es2020.sharedmemory, es2020.string, es2020.symbol.wellknown, es2020.intl, es2020.number, es2021.promise, es2021.string, es2021.weakref/esnext.weakref, es2021.intl, es2022.array, es2022.error, es2022.intl, es2022.object, es2022.sharedmemory, es2022.string, es2022.regexp, es2023.array, es2023.collection, es2023.intl, esnext.array, esnext.collection, esnext.intl, esnext.disposable, esnext.string, esnext.promise, esnext.decorators, esnext.object, esnext.regexp, decorators, decorators.legacy
+one or more: es5, es6/es2015, es7/es2016, es2017, es2018, es2019, es2020, es2021, es2022, es2023, esnext, dom, dom.iterable, dom.asynciterable, webworker, webworker.importscripts, webworker.iterable, webworker.asynciterable, scripthost, es2015.core, es2015.collection, es2015.generator, es2015.iterable, es2015.promise, es2015.proxy, es2015.reflect, es2015.symbol, es2015.symbol.wellknown, es2016.array.include, es2016.intl, es2017.date, es2017.object, es2017.sharedmemory, es2017.string, es2017.intl, es2017.typedarrays, es2018.asyncgenerator, es2018.asynciterable/esnext.asynciterable, es2018.intl, es2018.promise, es2018.regexp, es2019.array, es2019.object, es2019.string, es2019.symbol/esnext.symbol, es2019.intl, es2020.bigint/esnext.bigint, es2020.date, es2020.promise, es2020.sharedmemory, es2020.string, es2020.symbol.wellknown, es2020.intl, es2020.number, es2021.promise, es2021.string, es2021.weakref/esnext.weakref, es2021.intl, es2022.array, es2022.error, es2022.intl, es2022.object, es2022.sharedmemory, es2022.string, es2022.regexp, es2023.array, es2023.collection, es2023.intl, esnext.array, esnext.collection, esnext.intl, esnext.disposable, esnext.string, esnext.promise, esnext.decorators, esnext.object, esnext.regexp, esnext.iterator, decorators, decorators.legacy
default: undefined
[94m--allowJs[39m
diff --git a/tests/baselines/reference/tsserver/telemetry/does-not-expose-paths.js b/tests/baselines/reference/tsserver/telemetry/does-not-expose-paths.js
index 51776f53d24a9..200888bca4037 100644
--- a/tests/baselines/reference/tsserver/telemetry/does-not-expose-paths.js
+++ b/tests/baselines/reference/tsserver/telemetry/does-not-expose-paths.js
@@ -442,7 +442,7 @@ Info seq [hh:mm:ss:mss] event:
"line": 34,
"offset": 16
},
- "text": "Argument for '--lib' option must be: 'es5', 'es6', 'es2015', 'es7', 'es2016', 'es2017', 'es2018', 'es2019', 'es2020', 'es2021', 'es2022', 'es2023', 'esnext', 'dom', 'dom.iterable', 'dom.asynciterable', 'webworker', 'webworker.importscripts', 'webworker.iterable', 'webworker.asynciterable', 'scripthost', 'es2015.core', 'es2015.collection', 'es2015.generator', 'es2015.iterable', 'es2015.promise', 'es2015.proxy', 'es2015.reflect', 'es2015.symbol', 'es2015.symbol.wellknown', 'es2016.array.include', 'es2016.intl', 'es2017.date', 'es2017.object', 'es2017.sharedmemory', 'es2017.string', 'es2017.intl', 'es2017.typedarrays', 'es2018.asyncgenerator', 'es2018.asynciterable', 'es2018.intl', 'es2018.promise', 'es2018.regexp', 'es2019.array', 'es2019.object', 'es2019.string', 'es2019.symbol', 'es2019.intl', 'es2020.bigint', 'es2020.date', 'es2020.promise', 'es2020.sharedmemory', 'es2020.string', 'es2020.symbol.wellknown', 'es2020.intl', 'es2020.number', 'es2021.promise', 'es2021.string', 'es2021.weakref', 'es2021.intl', 'es2022.array', 'es2022.error', 'es2022.intl', 'es2022.object', 'es2022.sharedmemory', 'es2022.string', 'es2022.regexp', 'es2023.array', 'es2023.collection', 'es2023.intl', 'esnext.array', 'esnext.collection', 'esnext.symbol', 'esnext.asynciterable', 'esnext.intl', 'esnext.disposable', 'esnext.bigint', 'esnext.string', 'esnext.promise', 'esnext.weakref', 'esnext.decorators', 'esnext.object', 'esnext.regexp', 'decorators', 'decorators.legacy'.",
+ "text": "Argument for '--lib' option must be: 'es5', 'es6', 'es2015', 'es7', 'es2016', 'es2017', 'es2018', 'es2019', 'es2020', 'es2021', 'es2022', 'es2023', 'esnext', 'dom', 'dom.iterable', 'dom.asynciterable', 'webworker', 'webworker.importscripts', 'webworker.iterable', 'webworker.asynciterable', 'scripthost', 'es2015.core', 'es2015.collection', 'es2015.generator', 'es2015.iterable', 'es2015.promise', 'es2015.proxy', 'es2015.reflect', 'es2015.symbol', 'es2015.symbol.wellknown', 'es2016.array.include', 'es2016.intl', 'es2017.date', 'es2017.object', 'es2017.sharedmemory', 'es2017.string', 'es2017.intl', 'es2017.typedarrays', 'es2018.asyncgenerator', 'es2018.asynciterable', 'es2018.intl', 'es2018.promise', 'es2018.regexp', 'es2019.array', 'es2019.object', 'es2019.string', 'es2019.symbol', 'es2019.intl', 'es2020.bigint', 'es2020.date', 'es2020.promise', 'es2020.sharedmemory', 'es2020.string', 'es2020.symbol.wellknown', 'es2020.intl', 'es2020.number', 'es2021.promise', 'es2021.string', 'es2021.weakref', 'es2021.intl', 'es2022.array', 'es2022.error', 'es2022.intl', 'es2022.object', 'es2022.sharedmemory', 'es2022.string', 'es2022.regexp', 'es2023.array', 'es2023.collection', 'es2023.intl', 'esnext.array', 'esnext.collection', 'esnext.symbol', 'esnext.asynciterable', 'esnext.intl', 'esnext.disposable', 'esnext.bigint', 'esnext.string', 'esnext.promise', 'esnext.weakref', 'esnext.decorators', 'esnext.object', 'esnext.regexp', 'esnext.iterator', 'decorators', 'decorators.legacy'.",
"code": 6046,
"category": "error",
"fileName": "/tsconfig.json"
diff --git a/tests/baselines/reference/types.asyncGenerators.es2018.2.symbols b/tests/baselines/reference/types.asyncGenerators.es2018.2.symbols
index 5fc37ff0791b9..ec2eea8b3b443 100644
--- a/tests/baselines/reference/types.asyncGenerators.es2018.2.symbols
+++ b/tests/baselines/reference/types.asyncGenerators.es2018.2.symbols
@@ -142,7 +142,7 @@ async function * explicitReturnType11(): Iterable<number> {
}
async function * explicitReturnType12(): Iterator<number> {
>explicitReturnType12 : Symbol(explicitReturnType12, Decl(types.asyncGenerators.es2018.2.ts, 68, 1))
->Iterator : Symbol(Iterator, Decl(lib.es2015.iterable.d.ts, --, --))
+>Iterator : Symbol(Iterator, Decl(lib.es2015.iterable.d.ts, --, --), Decl(lib.esnext.iterator.d.ts, --, --))
yield 1;
}
diff --git a/tests/baselines/reference/typesVersions.ambientModules.trace.json b/tests/baselines/reference/typesVersions.ambientModules.trace.json
index 91387ca4d646a..440bf144cd748 100644
--- a/tests/baselines/reference/typesVersions.ambientModules.trace.json
+++ b/tests/baselines/reference/typesVersions.ambientModules.trace.json
@@ -924,6 +924,18 @@
"Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
"Directory '/node_modules' does not exist, skipping all lookups in it.",
"======== Module name '@typescript/lib-esnext/string' was not resolved. ========",
+ "======== Resolving module '@typescript/lib-esnext/iterator' from '/.src/__lib_node_modules_lookup_lib.esnext.iterator.d.ts__.ts'. ========",
+ "Explicitly specified module resolution kind: 'Node10'.",
+ "Loading module '@typescript/lib-esnext/iterator' from 'node_modules' folder, target file types: TypeScript, Declaration.",
+ "Searching all ancestor node_modules directories for preferred extensions: TypeScript, Declaration.",
+ "Directory '/.src/node_modules/@types' does not exist, skipping all lookups in it.",
+ "Scoped package detected, looking in 'typescript__lib-esnext/iterator'",
+ "Directory '/node_modules' does not exist, skipping all lookups in it.",
+ "Scoped package detected, looking in 'typescript__lib-esnext/iterator'",
+ "Loading module '@typescript/lib-esnext/iterator' from 'node_modules' folder, target file types: JavaScript.",
+ "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
+ "Directory '/node_modules' does not exist, skipping all lookups in it.",
+ "======== Module name '@typescript/lib-esnext/iterator' was not resolved. ========",
"======== Resolving module '@typescript/lib-dom' from '/.src/__lib_node_modules_lookup_lib.dom.d.ts__.ts'. ========",
"Explicitly specified module resolution kind: 'Node10'.",
"Loading module '@typescript/lib-dom' from 'node_modules' folder, target file types: TypeScript, Declaration.",
diff --git a/tests/baselines/reference/typesVersions.emptyTypes.trace.json b/tests/baselines/reference/typesVersions.emptyTypes.trace.json
index ad8ce1a041e77..a7e3c8ee4d40f 100644
--- a/tests/baselines/reference/typesVersions.emptyTypes.trace.json
+++ b/tests/baselines/reference/typesVersions.emptyTypes.trace.json
@@ -943,6 +943,19 @@
"Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
"Directory '/node_modules' does not exist, skipping all lookups in it.",
"======== Module name '@typescript/lib-esnext/string' was not resolved. ========",
+ "======== Resolving module '@typescript/lib-esnext/iterator' from '/.src/__lib_node_modules_lookup_lib.esnext.iterator.d.ts__.ts'. ========",
+ "Explicitly specified module resolution kind: 'Node10'.",
+ "Loading module '@typescript/lib-esnext/iterator' from 'node_modules' folder, target file types: TypeScript, Declaration.",
+ "Searching all ancestor node_modules directories for preferred extensions: TypeScript, Declaration.",
+ "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
+ "Scoped package detected, looking in 'typescript__lib-esnext/iterator'",
+ "Directory '/node_modules' does not exist, skipping all lookups in it.",
+ "Scoped package detected, looking in 'typescript__lib-esnext/iterator'",
+ "Loading module '@typescript/lib-esnext/iterator' from 'node_modules' folder, target file types: JavaScript.",
+ "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
+ "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
+ "Directory '/node_modules' does not exist, skipping all lookups in it.",
+ "======== Module name '@typescript/lib-esnext/iterator' was not resolved. ========",
"======== Resolving module '@typescript/lib-dom' from '/.src/__lib_node_modules_lookup_lib.dom.d.ts__.ts'. ========",
"Explicitly specified module resolution kind: 'Node10'.",
"Loading module '@typescript/lib-dom' from 'node_modules' folder, target file types: TypeScript, Declaration.",
diff --git a/tests/baselines/reference/typesVersions.justIndex.trace.json b/tests/baselines/reference/typesVersions.justIndex.trace.json
index b256dc3de4b1b..9a51bb2ec2809 100644
--- a/tests/baselines/reference/typesVersions.justIndex.trace.json
+++ b/tests/baselines/reference/typesVersions.justIndex.trace.json
@@ -943,6 +943,19 @@
"Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
"Directory '/node_modules' does not exist, skipping all lookups in it.",
"======== Module name '@typescript/lib-esnext/string' was not resolved. ========",
+ "======== Resolving module '@typescript/lib-esnext/iterator' from '/.src/__lib_node_modules_lookup_lib.esnext.iterator.d.ts__.ts'. ========",
+ "Explicitly specified module resolution kind: 'Node10'.",
+ "Loading module '@typescript/lib-esnext/iterator' from 'node_modules' folder, target file types: TypeScript, Declaration.",
+ "Searching all ancestor node_modules directories for preferred extensions: TypeScript, Declaration.",
+ "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
+ "Scoped package detected, looking in 'typescript__lib-esnext/iterator'",
+ "Directory '/node_modules' does not exist, skipping all lookups in it.",
+ "Scoped package detected, looking in 'typescript__lib-esnext/iterator'",
+ "Loading module '@typescript/lib-esnext/iterator' from 'node_modules' folder, target file types: JavaScript.",
+ "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
+ "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
+ "Directory '/node_modules' does not exist, skipping all lookups in it.",
+ "======== Module name '@typescript/lib-esnext/iterator' was not resolved. ========",
"======== Resolving module '@typescript/lib-dom' from '/.src/__lib_node_modules_lookup_lib.dom.d.ts__.ts'. ========",
"Explicitly specified module resolution kind: 'Node10'.",
"Loading module '@typescript/lib-dom' from 'node_modules' folder, target file types: TypeScript, Declaration.",
diff --git a/tests/baselines/reference/typesVersions.multiFile.trace.json b/tests/baselines/reference/typesVersions.multiFile.trace.json
index eddcfe7784250..5e4f850fef1ce 100644
--- a/tests/baselines/reference/typesVersions.multiFile.trace.json
+++ b/tests/baselines/reference/typesVersions.multiFile.trace.json
@@ -885,6 +885,18 @@
"Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
"Directory '/node_modules' does not exist, skipping all lookups in it.",
"======== Module name '@typescript/lib-esnext/string' was not resolved. ========",
+ "======== Resolving module '@typescript/lib-esnext/iterator' from '/.src/__lib_node_modules_lookup_lib.esnext.iterator.d.ts__.ts'. ========",
+ "Explicitly specified module resolution kind: 'Node10'.",
+ "Loading module '@typescript/lib-esnext/iterator' from 'node_modules' folder, target file types: TypeScript, Declaration.",
+ "Searching all ancestor node_modules directories for preferred extensions: TypeScript, Declaration.",
+ "Directory '/.src/node_modules/@types' does not exist, skipping all lookups in it.",
+ "Scoped package detected, looking in 'typescript__lib-esnext/iterator'",
+ "Directory '/node_modules' does not exist, skipping all lookups in it.",
+ "Scoped package detected, looking in 'typescript__lib-esnext/iterator'",
+ "Loading module '@typescript/lib-esnext/iterator' from 'node_modules' folder, target file types: JavaScript.",
+ "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
+ "Directory '/node_modules' does not exist, skipping all lookups in it.",
+ "======== Module name '@typescript/lib-esnext/iterator' was not resolved. ========",
"======== Resolving module '@typescript/lib-dom' from '/.src/__lib_node_modules_lookup_lib.dom.d.ts__.ts'. ========",
"Explicitly specified module resolution kind: 'Node10'.",
"Loading module '@typescript/lib-dom' from 'node_modules' folder, target file types: TypeScript, Declaration.",
diff --git a/tests/baselines/reference/typesVersionsDeclarationEmit.ambient.trace.json b/tests/baselines/reference/typesVersionsDeclarationEmit.ambient.trace.json
index 91387ca4d646a..440bf144cd748 100644
--- a/tests/baselines/reference/typesVersionsDeclarationEmit.ambient.trace.json
+++ b/tests/baselines/reference/typesVersionsDeclarationEmit.ambient.trace.json
@@ -924,6 +924,18 @@
"Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
"Directory '/node_modules' does not exist, skipping all lookups in it.",
"======== Module name '@typescript/lib-esnext/string' was not resolved. ========",
+ "======== Resolving module '@typescript/lib-esnext/iterator' from '/.src/__lib_node_modules_lookup_lib.esnext.iterator.d.ts__.ts'. ========",
+ "Explicitly specified module resolution kind: 'Node10'.",
+ "Loading module '@typescript/lib-esnext/iterator' from 'node_modules' folder, target file types: TypeScript, Declaration.",
+ "Searching all ancestor node_modules directories for preferred extensions: TypeScript, Declaration.",
+ "Directory '/.src/node_modules/@types' does not exist, skipping all lookups in it.",
+ "Scoped package detected, looking in 'typescript__lib-esnext/iterator'",
+ "Directory '/node_modules' does not exist, skipping all lookups in it.",
+ "Scoped package detected, looking in 'typescript__lib-esnext/iterator'",
+ "Loading module '@typescript/lib-esnext/iterator' from 'node_modules' folder, target file types: JavaScript.",
+ "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
+ "Directory '/node_modules' does not exist, skipping all lookups in it.",
+ "======== Module name '@typescript/lib-esnext/iterator' was not resolved. ========",
"======== Resolving module '@typescript/lib-dom' from '/.src/__lib_node_modules_lookup_lib.dom.d.ts__.ts'. ========",
"Explicitly specified module resolution kind: 'Node10'.",
"Loading module '@typescript/lib-dom' from 'node_modules' folder, target file types: TypeScript, Declaration.",
diff --git a/tests/baselines/reference/typesVersionsDeclarationEmit.multiFile.trace.json b/tests/baselines/reference/typesVersionsDeclarationEmit.multiFile.trace.json
index eddcfe7784250..5e4f850fef1ce 100644
--- a/tests/baselines/reference/typesVersionsDeclarationEmit.multiFile.trace.json
+++ b/tests/baselines/reference/typesVersionsDeclarationEmit.multiFile.trace.json
@@ -885,6 +885,18 @@
"Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
"Directory '/node_modules' does not exist, skipping all lookups in it.",
"======== Module name '@typescript/lib-esnext/string' was not resolved. ========",
+ "======== Resolving module '@typescript/lib-esnext/iterator' from '/.src/__lib_node_modules_lookup_lib.esnext.iterator.d.ts__.ts'. ========",
+ "Explicitly specified module resolution kind: 'Node10'.",
+ "Loading module '@typescript/lib-esnext/iterator' from 'node_modules' folder, target file types: TypeScript, Declaration.",
+ "Searching all ancestor node_modules directories for preferred extensions: TypeScript, Declaration.",
+ "Directory '/.src/node_modules/@types' does not exist, skipping all lookups in it.",
+ "Scoped package detected, looking in 'typescript__lib-esnext/iterator'",
+ "Directory '/node_modules' does not exist, skipping all lookups in it.",
+ "Scoped package detected, looking in 'typescript__lib-esnext/iterator'",
+ "Loading module '@typescript/lib-esnext/iterator' from 'node_modules' folder, target file types: JavaScript.",
+ "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
+ "Directory '/node_modules' does not exist, skipping all lookups in it.",
+ "======== Module name '@typescript/lib-esnext/iterator' was not resolved. ========",
"======== Resolving module '@typescript/lib-dom' from '/.src/__lib_node_modules_lookup_lib.dom.d.ts__.ts'. ========",
"Explicitly specified module resolution kind: 'Node10'.",
"Loading module '@typescript/lib-dom' from 'node_modules' folder, target file types: TypeScript, Declaration.",
diff --git a/tests/baselines/reference/typesVersionsDeclarationEmit.multiFileBackReferenceToSelf.trace.json b/tests/baselines/reference/typesVersionsDeclarationEmit.multiFileBackReferenceToSelf.trace.json
index f172221e6854e..a788ea8099e56 100644
--- a/tests/baselines/reference/typesVersionsDeclarationEmit.multiFileBackReferenceToSelf.trace.json
+++ b/tests/baselines/reference/typesVersionsDeclarationEmit.multiFileBackReferenceToSelf.trace.json
@@ -907,6 +907,18 @@
"Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
"Directory '/node_modules' does not exist, skipping all lookups in it.",
"======== Module name '@typescript/lib-esnext/string' was not resolved. ========",
+ "======== Resolving module '@typescript/lib-esnext/iterator' from '/.src/__lib_node_modules_lookup_lib.esnext.iterator.d.ts__.ts'. ========",
+ "Explicitly specified module resolution kind: 'Node10'.",
+ "Loading module '@typescript/lib-esnext/iterator' from 'node_modules' folder, target file types: TypeScript, Declaration.",
+ "Searching all ancestor node_modules directories for preferred extensions: TypeScript, Declaration.",
+ "Directory '/.src/node_modules/@types' does not exist, skipping all lookups in it.",
+ "Scoped package detected, looking in 'typescript__lib-esnext/iterator'",
+ "Directory '/node_modules' does not exist, skipping all lookups in it.",
+ "Scoped package detected, looking in 'typescript__lib-esnext/iterator'",
+ "Loading module '@typescript/lib-esnext/iterator' from 'node_modules' folder, target file types: JavaScript.",
+ "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
+ "Directory '/node_modules' does not exist, skipping all lookups in it.",
+ "======== Module name '@typescript/lib-esnext/iterator' was not resolved. ========",
"======== Resolving module '@typescript/lib-dom' from '/.src/__lib_node_modules_lookup_lib.dom.d.ts__.ts'. ========",
"Explicitly specified module resolution kind: 'Node10'.",
"Loading module '@typescript/lib-dom' from 'node_modules' folder, target file types: TypeScript, Declaration.",
diff --git a/tests/baselines/reference/typesVersionsDeclarationEmit.multiFileBackReferenceToUnmapped.trace.json b/tests/baselines/reference/typesVersionsDeclarationEmit.multiFileBackReferenceToUnmapped.trace.json
index cdd64b13a3fab..328752d50a8b2 100644
--- a/tests/baselines/reference/typesVersionsDeclarationEmit.multiFileBackReferenceToUnmapped.trace.json
+++ b/tests/baselines/reference/typesVersionsDeclarationEmit.multiFileBackReferenceToUnmapped.trace.json
@@ -891,6 +891,18 @@
"Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
"Directory '/node_modules' does not exist, skipping all lookups in it.",
"======== Module name '@typescript/lib-esnext/string' was not resolved. ========",
+ "======== Resolving module '@typescript/lib-esnext/iterator' from '/.src/__lib_node_modules_lookup_lib.esnext.iterator.d.ts__.ts'. ========",
+ "Explicitly specified module resolution kind: 'Node10'.",
+ "Loading module '@typescript/lib-esnext/iterator' from 'node_modules' folder, target file types: TypeScript, Declaration.",
+ "Searching all ancestor node_modules directories for preferred extensions: TypeScript, Declaration.",
+ "Directory '/.src/node_modules/@types' does not exist, skipping all lookups in it.",
+ "Scoped package detected, looking in 'typescript__lib-esnext/iterator'",
+ "Directory '/node_modules' does not exist, skipping all lookups in it.",
+ "Scoped package detected, looking in 'typescript__lib-esnext/iterator'",
+ "Loading module '@typescript/lib-esnext/iterator' from 'node_modules' folder, target file types: JavaScript.",
+ "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
+ "Directory '/node_modules' does not exist, skipping all lookups in it.",
+ "======== Module name '@typescript/lib-esnext/iterator' was not resolved. ========",
"======== Resolving module '@typescript/lib-dom' from '/.src/__lib_node_modules_lookup_lib.dom.d.ts__.ts'. ========",
"Explicitly specified module resolution kind: 'Node10'.",
"Loading module '@typescript/lib-dom' from 'node_modules' folder, target file types: TypeScript, Declaration.",
diff --git a/tests/baselines/reference/unionAndIntersectionInference3.symbols b/tests/baselines/reference/unionAndIntersectionInference3.symbols
index e84536ec7cc72..41531386e789d 100644
--- a/tests/baselines/reference/unionAndIntersectionInference3.symbols
+++ b/tests/baselines/reference/unionAndIntersectionInference3.symbols
@@ -29,7 +29,7 @@ const g: <U, R, S>(com: () => Iterator<S, U, R> | AsyncIterator<S, U, R>) => Pro
>R : Symbol(R, Decl(unionAndIntersectionInference3.ts, 8, 12))
>S : Symbol(S, Decl(unionAndIntersectionInference3.ts, 8, 15))
>com : Symbol(com, Decl(unionAndIntersectionInference3.ts, 8, 19))
->Iterator : Symbol(Iterator, Decl(lib.es2015.iterable.d.ts, --, --))
+>Iterator : Symbol(Iterator, Decl(lib.es2015.iterable.d.ts, --, --), Decl(lib.esnext.iterator.d.ts, --, --))
>S : Symbol(S, Decl(unionAndIntersectionInference3.ts, 8, 15))
>U : Symbol(U, Decl(unionAndIntersectionInference3.ts, 8, 10))
>R : Symbol(R, Decl(unionAndIntersectionInference3.ts, 8, 12))
@@ -43,7 +43,7 @@ const g: <U, R, S>(com: () => Iterator<S, U, R> | AsyncIterator<S, U, R>) => Pro
>R : Symbol(R, Decl(unionAndIntersectionInference3.ts, 8, 99))
>S : Symbol(S, Decl(unionAndIntersectionInference3.ts, 8, 102))
>com : Symbol(com, Decl(unionAndIntersectionInference3.ts, 8, 106))
->Iterator : Symbol(Iterator, Decl(lib.es2015.iterable.d.ts, --, --))
+>Iterator : Symbol(Iterator, Decl(lib.es2015.iterable.d.ts, --, --), Decl(lib.esnext.iterator.d.ts, --, --))
>S : Symbol(S, Decl(unionAndIntersectionInference3.ts, 8, 102))
>U : Symbol(U, Decl(unionAndIntersectionInference3.ts, 8, 97))
>R : Symbol(R, Decl(unionAndIntersectionInference3.ts, 8, 99))
diff --git a/tests/baselines/reference/yieldStarContextualType.types b/tests/baselines/reference/yieldStarContextualType.types
index a3996cf7981ef..25f8d0324eec7 100644
--- a/tests/baselines/reference/yieldStarContextualType.types
+++ b/tests/baselines/reference/yieldStarContextualType.types
@@ -1,5 +1,9 @@
//// [tests/cases/compiler/yieldStarContextualType.ts] ////
+=== Performance Stats ===
+Type Count: 1,000
+Instantiation count: 2,500
+
=== yieldStarContextualType.ts ===
declare const g: <T, U, V>() => Generator<T, U, V>;
>g : <T, U, V>() => Generator<T, U, V>
diff --git a/tests/cases/compiler/builtinIterator.ts b/tests/cases/compiler/builtinIterator.ts
new file mode 100644
index 0000000000000..3b20d9fe53dda
--- /dev/null
+++ b/tests/cases/compiler/builtinIterator.ts
@@ -0,0 +1,76 @@
+// @target: esnext
+// @strict: true
+
+const iterator = Iterator.from([0, 1, 2]);
+
+const mapped = iterator.map(String);
+
+const filtered = iterator.filter(x => x > 0);
+
+function isZero(x: number): x is 0 {
+ return x === 0;
+}
+const zero = iterator.filter(isZero);
+
+const iteratorFromBare = Iterator.from({
+ next() {
+ return {
+ done: Math.random() < .5,
+ value: "a string",
+ };
+ },
+});
+
+
+function* gen() {
+ yield 0;
+}
+
+const mappedGen = gen().map(x => x === 0 ? "zero" : "other");
+
+const mappedValues = [0, 1, 2].values().map(x => x === 0 ? "zero" : "other");
+
+
+class GoodIterator extends Iterator<number> {
+ next() {
+ return { done: false, value: 0 } as const;
+ }
+}
+
+// error cases
+new Iterator<number>();
+
+class C extends Iterator<number> {}
+
+// it's unfortunate that these are an error
+class BadIterator1 extends Iterator<number> {
+ next() {
+ if (Math.random() < .5) {
+ return { done: false, value: 0 } as const;
+ } else {
+ return { done: true, value: "a string" } as const;
+ }
+ }
+}
+
+class BadIterator2 extends Iterator<number> {
+ next() {
+ return { done: false, value: 0 };
+ }
+}
+
+class BadIterator3 extends Iterator<number> {
+ next() {
+ if (Math.random() < .5) {
+ return { done: false, value: 0 };
+ } else {
+ return { done: true, value: "a string" };
+ }
+ }
+}
+
+declare const g1: Generator<string, number, boolean>;
+const iter1 = Iterator.from(g1);
+
+declare const iter2: BuiltinIterator<string, BuiltinIteratorReturn>;
+const iter3 = iter2.flatMap(() => g1);
\ No newline at end of file
diff --git a/tests/cases/compiler/iterableTReturnTNext.ts b/tests/cases/compiler/iterableTReturnTNext.ts
index 9e24354b88d66..f51ecdbf019e4 100644
--- a/tests/cases/compiler/iterableTReturnTNext.ts
+++ b/tests/cases/compiler/iterableTReturnTNext.ts
@@ -38,10 +38,9 @@ class MyMap implements Map<string, number> {
get(key: string): number | undefined { return undefined; }
has(key: string): boolean { return false; }
set(key: string, value: number): this { return this; }
- entries(): IterableIterator<[string, number], BuiltinIteratorReturn> { throw new Error("Method not implemented."); }
- keys(): IterableIterator<string, BuiltinIteratorReturn> { throw new Error("Method not implemented."); }
-
- [Symbol.iterator](): IterableIterator<[string, number], BuiltinIteratorReturn> { throw new Error("Method not implemented."); }
+ entries(): BuiltinIterator<[string, number], BuiltinIteratorReturn> { throw new Error("Method not implemented."); }
+ keys(): BuiltinIterator<string, BuiltinIteratorReturn> { throw new Error("Method not implemented."); }
+ [Symbol.iterator](): BuiltinIterator<[string, number], BuiltinIteratorReturn> { throw new Error("Method not implemented."); }
// error when strictBuiltinIteratorReturn is true because values() has implicit `void` return, which isn't assignable to `undefined`
* values() {