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Accept test baselines
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‎tests/baselines/reference/bindingPatternCannotBeOnlyInferenceSource.errors.txt

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tests/cases/compiler/bindingPatternCannotBeOnlyInferenceSource.ts(2,7): error TS2571: Object is of type 'unknown'.
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tests/cases/compiler/bindingPatternCannotBeOnlyInferenceSource.ts(3,9): error TS2339: Property 'p1' does not exist on type 'unknown'.
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tests/cases/compiler/bindingPatternCannotBeOnlyInferenceSource.ts(4,7): error TS2461: Type 'unknown' is not an array type.
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tests/cases/compiler/bindingPatternCannotBeOnlyInferenceSource.ts(4,7): error TS2571: Object is of type 'unknown'.
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tests/cases/compiler/bindingPatternCannotBeOnlyInferenceSource.ts(5,7): error TS2461: Type 'unknown' is not an array type.
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==== tests/cases/compiler/bindingPatternCannotBeOnlyInferenceSource.ts (5 errors) ====
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declare function f<T>(): T;
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const {} = f(); // error (only in strictNullChecks)
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~~
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!!! error TS2571: Object is of type 'unknown'.
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const { p1 } = f(); // error
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~~
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!!! error TS2339: Property 'p1' does not exist on type 'unknown'.
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const [] = f(); // error
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~~
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!!! error TS2461: Type 'unknown' is not an array type.
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~~
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!!! error TS2571: Object is of type 'unknown'.
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const [e1, e2] = f(); // error
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~~~~~~~~
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!!! error TS2461: Type 'unknown' is not an array type.
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// Repro from #43605
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type Dispatch<A = { type: any; [extraProps: string]: any }> = { <T extends A>(action: T): T };
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type IFuncs = { readonly [key: string]: (...p: any) => void };
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type IDestructuring<T extends IFuncs> = { readonly [key in keyof T]?: (...p: Parameters<T[key]>) => void };
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type Destructuring<T extends IFuncs, U extends IDestructuring<T>> = (dispatch: Dispatch<any>, funcs: T) => U;
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const funcs1 = {
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funcA: (a: boolean): void => {},
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funcB: (b: string, bb: string): void => {},
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funcC: (c: number, cc: number, ccc: boolean): void => {},
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};
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type TFuncs1 = typeof funcs1;
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declare function useReduxDispatch1<T extends IDestructuring<TFuncs1>>(destructuring: Destructuring<TFuncs1, T>): T;
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const {} = useReduxDispatch1(
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(d, f) => ({
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funcA: (...p) => d(f.funcA(...p)), // p should be inferrable
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funcB: (...p) => d(f.funcB(...p)),
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funcC: (...p) => d(f.funcC(...p)),
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})
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);
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‎tests/baselines/reference/bindingPatternCannotBeOnlyInferenceSource.js

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//// [bindingPatternCannotBeOnlyInferenceSource.ts]
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declare function f<T>(): T;
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const {} = f(); // error (only in strictNullChecks)
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const { p1 } = f(); // error
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const [] = f(); // error
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const [e1, e2] = f(); // error
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// Repro from #43605
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type Dispatch<A = { type: any; [extraProps: string]: any }> = { <T extends A>(action: T): T };
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type IFuncs = { readonly [key: string]: (...p: any) => void };
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type IDestructuring<T extends IFuncs> = { readonly [key in keyof T]?: (...p: Parameters<T[key]>) => void };
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type Destructuring<T extends IFuncs, U extends IDestructuring<T>> = (dispatch: Dispatch<any>, funcs: T) => U;
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const funcs1 = {
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funcA: (a: boolean): void => {},
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funcB: (b: string, bb: string): void => {},
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funcC: (c: number, cc: number, ccc: boolean): void => {},
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};
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type TFuncs1 = typeof funcs1;
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declare function useReduxDispatch1<T extends IDestructuring<TFuncs1>>(destructuring: Destructuring<TFuncs1, T>): T;
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const {} = useReduxDispatch1(
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(d, f) => ({
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funcA: (...p) => d(f.funcA(...p)), // p should be inferrable
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funcB: (...p) => d(f.funcB(...p)),
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funcC: (...p) => d(f.funcC(...p)),
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})
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);
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//// [bindingPatternCannotBeOnlyInferenceSource.js]
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var _a = f(); // error (only in strictNullChecks)
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var p1 = f().p1; // error
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var _b = f(); // error
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var _c = f(), e1 = _c[0], e2 = _c[1]; // error
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var funcs1 = {
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funcA: function (a) { },
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funcB: function (b, bb) { },
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funcC: function (c, cc, ccc) { }
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};
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var _d = useReduxDispatch1(function (d, f) { return ({
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funcA: function () {
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var p = [];
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for (var _i = 0; _i < arguments.length; _i++) {
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p[_i] = arguments[_i];
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}
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return d(f.funcA.apply(f, p));
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},
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funcB: function () {
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var p = [];
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for (var _i = 0; _i < arguments.length; _i++) {
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p[_i] = arguments[_i];
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}
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return d(f.funcB.apply(f, p));
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},
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funcC: function () {
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var p = [];
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for (var _i = 0; _i < arguments.length; _i++) {
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p[_i] = arguments[_i];
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}
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return d(f.funcC.apply(f, p));
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}
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}); });

‎tests/baselines/reference/bindingPatternCannotBeOnlyInferenceSource.symbols

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=== tests/cases/compiler/bindingPatternCannotBeOnlyInferenceSource.ts ===
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declare function f<T>(): T;
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>f : Symbol(f, Decl(bindingPatternCannotBeOnlyInferenceSource.ts, 0, 0))
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>T : Symbol(T, Decl(bindingPatternCannotBeOnlyInferenceSource.ts, 0, 19))
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>T : Symbol(T, Decl(bindingPatternCannotBeOnlyInferenceSource.ts, 0, 19))
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const {} = f(); // error (only in strictNullChecks)
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>f : Symbol(f, Decl(bindingPatternCannotBeOnlyInferenceSource.ts, 0, 0))
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const { p1 } = f(); // error
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>p1 : Symbol(p1, Decl(bindingPatternCannotBeOnlyInferenceSource.ts, 2, 7))
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>f : Symbol(f, Decl(bindingPatternCannotBeOnlyInferenceSource.ts, 0, 0))
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const [] = f(); // error
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>f : Symbol(f, Decl(bindingPatternCannotBeOnlyInferenceSource.ts, 0, 0))
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const [e1, e2] = f(); // error
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>e1 : Symbol(e1, Decl(bindingPatternCannotBeOnlyInferenceSource.ts, 4, 7))
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>e2 : Symbol(e2, Decl(bindingPatternCannotBeOnlyInferenceSource.ts, 4, 10))
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>f : Symbol(f, Decl(bindingPatternCannotBeOnlyInferenceSource.ts, 0, 0))
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// Repro from #43605
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type Dispatch<A = { type: any; [extraProps: string]: any }> = { <T extends A>(action: T): T };
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>Dispatch : Symbol(Dispatch, Decl(bindingPatternCannotBeOnlyInferenceSource.ts, 4, 21))
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>A : Symbol(A, Decl(bindingPatternCannotBeOnlyInferenceSource.ts, 7, 14))
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>type : Symbol(type, Decl(bindingPatternCannotBeOnlyInferenceSource.ts, 7, 19))
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>extraProps : Symbol(extraProps, Decl(bindingPatternCannotBeOnlyInferenceSource.ts, 7, 32))
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>T : Symbol(T, Decl(bindingPatternCannotBeOnlyInferenceSource.ts, 7, 65))
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>A : Symbol(A, Decl(bindingPatternCannotBeOnlyInferenceSource.ts, 7, 14))
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>action : Symbol(action, Decl(bindingPatternCannotBeOnlyInferenceSource.ts, 7, 78))
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>T : Symbol(T, Decl(bindingPatternCannotBeOnlyInferenceSource.ts, 7, 65))
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>T : Symbol(T, Decl(bindingPatternCannotBeOnlyInferenceSource.ts, 7, 65))
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type IFuncs = { readonly [key: string]: (...p: any) => void };
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>IFuncs : Symbol(IFuncs, Decl(bindingPatternCannotBeOnlyInferenceSource.ts, 7, 94))
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>key : Symbol(key, Decl(bindingPatternCannotBeOnlyInferenceSource.ts, 8, 26))
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>p : Symbol(p, Decl(bindingPatternCannotBeOnlyInferenceSource.ts, 8, 41))
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type IDestructuring<T extends IFuncs> = { readonly [key in keyof T]?: (...p: Parameters<T[key]>) => void };
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>IDestructuring : Symbol(IDestructuring, Decl(bindingPatternCannotBeOnlyInferenceSource.ts, 8, 62))
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>T : Symbol(T, Decl(bindingPatternCannotBeOnlyInferenceSource.ts, 9, 20))
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>IFuncs : Symbol(IFuncs, Decl(bindingPatternCannotBeOnlyInferenceSource.ts, 7, 94))
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>key : Symbol(key, Decl(bindingPatternCannotBeOnlyInferenceSource.ts, 9, 52))
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>T : Symbol(T, Decl(bindingPatternCannotBeOnlyInferenceSource.ts, 9, 20))
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>p : Symbol(p, Decl(bindingPatternCannotBeOnlyInferenceSource.ts, 9, 71))
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>Parameters : Symbol(Parameters, Decl(lib.es5.d.ts, --, --))
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>T : Symbol(T, Decl(bindingPatternCannotBeOnlyInferenceSource.ts, 9, 20))
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>key : Symbol(key, Decl(bindingPatternCannotBeOnlyInferenceSource.ts, 9, 52))
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type Destructuring<T extends IFuncs, U extends IDestructuring<T>> = (dispatch: Dispatch<any>, funcs: T) => U;
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>Destructuring : Symbol(Destructuring, Decl(bindingPatternCannotBeOnlyInferenceSource.ts, 9, 107))
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>T : Symbol(T, Decl(bindingPatternCannotBeOnlyInferenceSource.ts, 10, 19))
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>IFuncs : Symbol(IFuncs, Decl(bindingPatternCannotBeOnlyInferenceSource.ts, 7, 94))
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>U : Symbol(U, Decl(bindingPatternCannotBeOnlyInferenceSource.ts, 10, 36))
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>IDestructuring : Symbol(IDestructuring, Decl(bindingPatternCannotBeOnlyInferenceSource.ts, 8, 62))
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>T : Symbol(T, Decl(bindingPatternCannotBeOnlyInferenceSource.ts, 10, 19))
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>dispatch : Symbol(dispatch, Decl(bindingPatternCannotBeOnlyInferenceSource.ts, 10, 69))
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>Dispatch : Symbol(Dispatch, Decl(bindingPatternCannotBeOnlyInferenceSource.ts, 4, 21))
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>funcs : Symbol(funcs, Decl(bindingPatternCannotBeOnlyInferenceSource.ts, 10, 93))
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>T : Symbol(T, Decl(bindingPatternCannotBeOnlyInferenceSource.ts, 10, 19))
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>U : Symbol(U, Decl(bindingPatternCannotBeOnlyInferenceSource.ts, 10, 36))
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const funcs1 = {
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>funcs1 : Symbol(funcs1, Decl(bindingPatternCannotBeOnlyInferenceSource.ts, 11, 5))
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funcA: (a: boolean): void => {},
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>funcA : Symbol(funcA, Decl(bindingPatternCannotBeOnlyInferenceSource.ts, 11, 16))
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>a : Symbol(a, Decl(bindingPatternCannotBeOnlyInferenceSource.ts, 12, 12))
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funcB: (b: string, bb: string): void => {},
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>funcB : Symbol(funcB, Decl(bindingPatternCannotBeOnlyInferenceSource.ts, 12, 36))
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>b : Symbol(b, Decl(bindingPatternCannotBeOnlyInferenceSource.ts, 13, 12))
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>bb : Symbol(bb, Decl(bindingPatternCannotBeOnlyInferenceSource.ts, 13, 22))
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funcC: (c: number, cc: number, ccc: boolean): void => {},
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>funcC : Symbol(funcC, Decl(bindingPatternCannotBeOnlyInferenceSource.ts, 13, 47))
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>c : Symbol(c, Decl(bindingPatternCannotBeOnlyInferenceSource.ts, 14, 12))
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>cc : Symbol(cc, Decl(bindingPatternCannotBeOnlyInferenceSource.ts, 14, 22))
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>ccc : Symbol(ccc, Decl(bindingPatternCannotBeOnlyInferenceSource.ts, 14, 34))
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};
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type TFuncs1 = typeof funcs1;
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>TFuncs1 : Symbol(TFuncs1, Decl(bindingPatternCannotBeOnlyInferenceSource.ts, 15, 2))
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>funcs1 : Symbol(funcs1, Decl(bindingPatternCannotBeOnlyInferenceSource.ts, 11, 5))
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declare function useReduxDispatch1<T extends IDestructuring<TFuncs1>>(destructuring: Destructuring<TFuncs1, T>): T;
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>useReduxDispatch1 : Symbol(useReduxDispatch1, Decl(bindingPatternCannotBeOnlyInferenceSource.ts, 16, 29))
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>T : Symbol(T, Decl(bindingPatternCannotBeOnlyInferenceSource.ts, 17, 35))
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>IDestructuring : Symbol(IDestructuring, Decl(bindingPatternCannotBeOnlyInferenceSource.ts, 8, 62))
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>TFuncs1 : Symbol(TFuncs1, Decl(bindingPatternCannotBeOnlyInferenceSource.ts, 15, 2))
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>destructuring : Symbol(destructuring, Decl(bindingPatternCannotBeOnlyInferenceSource.ts, 17, 70))
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>Destructuring : Symbol(Destructuring, Decl(bindingPatternCannotBeOnlyInferenceSource.ts, 9, 107))
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>TFuncs1 : Symbol(TFuncs1, Decl(bindingPatternCannotBeOnlyInferenceSource.ts, 15, 2))
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>T : Symbol(T, Decl(bindingPatternCannotBeOnlyInferenceSource.ts, 17, 35))
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>T : Symbol(T, Decl(bindingPatternCannotBeOnlyInferenceSource.ts, 17, 35))
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const {} = useReduxDispatch1(
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>useReduxDispatch1 : Symbol(useReduxDispatch1, Decl(bindingPatternCannotBeOnlyInferenceSource.ts, 16, 29))
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(d, f) => ({
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>d : Symbol(d, Decl(bindingPatternCannotBeOnlyInferenceSource.ts, 19, 5))
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>f : Symbol(f, Decl(bindingPatternCannotBeOnlyInferenceSource.ts, 19, 7))
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funcA: (...p) => d(f.funcA(...p)), // p should be inferrable
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>funcA : Symbol(funcA, Decl(bindingPatternCannotBeOnlyInferenceSource.ts, 19, 16))
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>p : Symbol(p, Decl(bindingPatternCannotBeOnlyInferenceSource.ts, 20, 16))
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>d : Symbol(d, Decl(bindingPatternCannotBeOnlyInferenceSource.ts, 19, 5))
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>f.funcA : Symbol(funcA, Decl(bindingPatternCannotBeOnlyInferenceSource.ts, 11, 16))
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>f : Symbol(f, Decl(bindingPatternCannotBeOnlyInferenceSource.ts, 19, 7))
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>funcA : Symbol(funcA, Decl(bindingPatternCannotBeOnlyInferenceSource.ts, 11, 16))
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>p : Symbol(p, Decl(bindingPatternCannotBeOnlyInferenceSource.ts, 20, 16))
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funcB: (...p) => d(f.funcB(...p)),
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>funcB : Symbol(funcB, Decl(bindingPatternCannotBeOnlyInferenceSource.ts, 20, 42))
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>p : Symbol(p, Decl(bindingPatternCannotBeOnlyInferenceSource.ts, 21, 16))
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>d : Symbol(d, Decl(bindingPatternCannotBeOnlyInferenceSource.ts, 19, 5))
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>f.funcB : Symbol(funcB, Decl(bindingPatternCannotBeOnlyInferenceSource.ts, 12, 36))
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>f : Symbol(f, Decl(bindingPatternCannotBeOnlyInferenceSource.ts, 19, 7))
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>funcB : Symbol(funcB, Decl(bindingPatternCannotBeOnlyInferenceSource.ts, 12, 36))
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>p : Symbol(p, Decl(bindingPatternCannotBeOnlyInferenceSource.ts, 21, 16))
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funcC: (...p) => d(f.funcC(...p)),
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>funcC : Symbol(funcC, Decl(bindingPatternCannotBeOnlyInferenceSource.ts, 21, 42))
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>p : Symbol(p, Decl(bindingPatternCannotBeOnlyInferenceSource.ts, 22, 16))
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>d : Symbol(d, Decl(bindingPatternCannotBeOnlyInferenceSource.ts, 19, 5))
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>f.funcC : Symbol(funcC, Decl(bindingPatternCannotBeOnlyInferenceSource.ts, 13, 47))
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>f : Symbol(f, Decl(bindingPatternCannotBeOnlyInferenceSource.ts, 19, 7))
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>funcC : Symbol(funcC, Decl(bindingPatternCannotBeOnlyInferenceSource.ts, 13, 47))
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>p : Symbol(p, Decl(bindingPatternCannotBeOnlyInferenceSource.ts, 22, 16))
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})
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);
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‎tests/baselines/reference/bindingPatternCannotBeOnlyInferenceSource.types

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=== tests/cases/compiler/bindingPatternCannotBeOnlyInferenceSource.ts ===
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declare function f<T>(): T;
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>f : <T>() => T
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const {} = f(); // error (only in strictNullChecks)
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>f() : unknown
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>f : <T>() => T
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const { p1 } = f(); // error
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>p1 : any
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>f() : unknown
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>f : <T>() => T
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const [] = f(); // error
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>f() : unknown
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>f : <T>() => T
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const [e1, e2] = f(); // error
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>e1 : any
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>e2 : any
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>f() : unknown
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>f : <T>() => T
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// Repro from #43605
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type Dispatch<A = { type: any; [extraProps: string]: any }> = { <T extends A>(action: T): T };
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>Dispatch : Dispatch<A>
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>type : any
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>extraProps : string
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>action : T
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type IFuncs = { readonly [key: string]: (...p: any) => void };
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>IFuncs : { readonly [key: string]: (...p: any) => void; }
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>key : string
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>p : any
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type IDestructuring<T extends IFuncs> = { readonly [key in keyof T]?: (...p: Parameters<T[key]>) => void };
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>IDestructuring : IDestructuring<T>
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>p : Parameters<T[key]>
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type Destructuring<T extends IFuncs, U extends IDestructuring<T>> = (dispatch: Dispatch<any>, funcs: T) => U;
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>Destructuring : Destructuring<T, U>
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>dispatch : Dispatch<any>
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>funcs : T
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const funcs1 = {
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>funcs1 : { funcA: (a: boolean) => void; funcB: (b: string, bb: string) => void; funcC: (c: number, cc: number, ccc: boolean) => void; }
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>{ funcA: (a: boolean): void => {}, funcB: (b: string, bb: string): void => {}, funcC: (c: number, cc: number, ccc: boolean): void => {},} : { funcA: (a: boolean) => void; funcB: (b: string, bb: string) => void; funcC: (c: number, cc: number, ccc: boolean) => void; }
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funcA: (a: boolean): void => {},
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>funcA : (a: boolean) => void
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>(a: boolean): void => {} : (a: boolean) => void
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>a : boolean
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funcB: (b: string, bb: string): void => {},
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>funcB : (b: string, bb: string) => void
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>(b: string, bb: string): void => {} : (b: string, bb: string) => void
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>b : string
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>bb : string
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funcC: (c: number, cc: number, ccc: boolean): void => {},
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>funcC : (c: number, cc: number, ccc: boolean) => void
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>(c: number, cc: number, ccc: boolean): void => {} : (c: number, cc: number, ccc: boolean) => void
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>c : number
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>cc : number
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>ccc : boolean
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};
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type TFuncs1 = typeof funcs1;
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>TFuncs1 : { funcA: (a: boolean) => void; funcB: (b: string, bb: string) => void; funcC: (c: number, cc: number, ccc: boolean) => void; }
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>funcs1 : { funcA: (a: boolean) => void; funcB: (b: string, bb: string) => void; funcC: (c: number, cc: number, ccc: boolean) => void; }
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declare function useReduxDispatch1<T extends IDestructuring<TFuncs1>>(destructuring: Destructuring<TFuncs1, T>): T;
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>useReduxDispatch1 : <T extends IDestructuring<{ funcA: (a: boolean) => void; funcB: (b: string, bb: string) => void; funcC: (c: number, cc: number, ccc: boolean) => void; }>>(destructuring: Destructuring<TFuncs1, T>) => T
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>destructuring : Destructuring<{ funcA: (a: boolean) => void; funcB: (b: string, bb: string) => void; funcC: (c: number, cc: number, ccc: boolean) => void; }, T>
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const {} = useReduxDispatch1(
77+
>useReduxDispatch1( (d, f) => ({ funcA: (...p) => d(f.funcA(...p)), // p should be inferrable funcB: (...p) => d(f.funcB(...p)), funcC: (...p) => d(f.funcC(...p)), })) : { funcA: (a: boolean) => void; funcB: (b: string, bb: string) => void; funcC: (c: number, cc: number, ccc: boolean) => void; }
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>useReduxDispatch1 : <T extends IDestructuring<{ funcA: (a: boolean) => void; funcB: (b: string, bb: string) => void; funcC: (c: number, cc: number, ccc: boolean) => void; }>>(destructuring: Destructuring<{ funcA: (a: boolean) => void; funcB: (b: string, bb: string) => void; funcC: (c: number, cc: number, ccc: boolean) => void; }, T>) => T
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(d, f) => ({
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>(d, f) => ({ funcA: (...p) => d(f.funcA(...p)), // p should be inferrable funcB: (...p) => d(f.funcB(...p)), funcC: (...p) => d(f.funcC(...p)), }) : (d: Dispatch<any>, f: { funcA: (a: boolean) => void; funcB: (b: string, bb: string) => void; funcC: (c: number, cc: number, ccc: boolean) => void; }) => { funcA: (a: boolean) => void; funcB: (b: string, bb: string) => void; funcC: (c: number, cc: number, ccc: boolean) => void; }
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>d : Dispatch<any>
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>f : { funcA: (a: boolean) => void; funcB: (b: string, bb: string) => void; funcC: (c: number, cc: number, ccc: boolean) => void; }
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>({ funcA: (...p) => d(f.funcA(...p)), // p should be inferrable funcB: (...p) => d(f.funcB(...p)), funcC: (...p) => d(f.funcC(...p)), }) : { funcA: (a: boolean) => void; funcB: (b: string, bb: string) => void; funcC: (c: number, cc: number, ccc: boolean) => void; }
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>{ funcA: (...p) => d(f.funcA(...p)), // p should be inferrable funcB: (...p) => d(f.funcB(...p)), funcC: (...p) => d(f.funcC(...p)), } : { funcA: (a: boolean) => void; funcB: (b: string, bb: string) => void; funcC: (c: number, cc: number, ccc: boolean) => void; }
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funcA: (...p) => d(f.funcA(...p)), // p should be inferrable
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>funcA : (a: boolean) => void
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>(...p) => d(f.funcA(...p)) : (a: boolean) => void
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>p : [a: boolean]
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>d(f.funcA(...p)) : void
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>d : Dispatch<any>
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>f.funcA(...p) : void
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>f.funcA : (a: boolean) => void
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>f : { funcA: (a: boolean) => void; funcB: (b: string, bb: string) => void; funcC: (c: number, cc: number, ccc: boolean) => void; }
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>funcA : (a: boolean) => void
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>...p : boolean
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>p : [a: boolean]
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funcB: (...p) => d(f.funcB(...p)),
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>funcB : (b: string, bb: string) => void
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>(...p) => d(f.funcB(...p)) : (b: string, bb: string) => void
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>p : [b: string, bb: string]
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>d(f.funcB(...p)) : void
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>d : Dispatch<any>
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>f.funcB(...p) : void
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>f.funcB : (b: string, bb: string) => void
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>f : { funcA: (a: boolean) => void; funcB: (b: string, bb: string) => void; funcC: (c: number, cc: number, ccc: boolean) => void; }
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>funcB : (b: string, bb: string) => void
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>...p : string
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>p : [b: string, bb: string]
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funcC: (...p) => d(f.funcC(...p)),
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>funcC : (c: number, cc: number, ccc: boolean) => void
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>(...p) => d(f.funcC(...p)) : (c: number, cc: number, ccc: boolean) => void
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>p : [c: number, cc: number, ccc: boolean]
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>d(f.funcC(...p)) : void
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>d : Dispatch<any>
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>f.funcC(...p) : void
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>f.funcC : (c: number, cc: number, ccc: boolean) => void
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>f : { funcA: (a: boolean) => void; funcB: (b: string, bb: string) => void; funcC: (c: number, cc: number, ccc: boolean) => void; }
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>funcC : (c: number, cc: number, ccc: boolean) => void
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>...p : number | boolean
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>p : [c: number, cc: number, ccc: boolean]
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})
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);
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‎tests/baselines/reference/bindingPatternContextualTypeDoesNotCauseWidening.js

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//// [bindingPatternContextualTypeDoesNotCauseWidening.ts]
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declare function pick<O, T extends keyof O>(keys: T[], obj?: O): Pick<O, T>;
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const _ = pick(['b'], { a: 'a', b: 'b' }); // T: "b"
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const { } = pick(['b'], { a: 'a', b: 'b' }); // T: "b" | "a" ??? (before fix)
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//// [bindingPatternContextualTypeDoesNotCauseWidening.js]
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var _ = pick(['b'], { a: 'a', b: 'b' }); // T: "b"
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var _a = pick(['b'], { a: 'a', b: 'b' }); // T: "b" | "a" ??? (before fix)

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