[NewErrors] 5.3.0-dev.20230827 vs 5.2.2

[typescript-bot]

The following errors were reported by 5.3.0-dev.20230827, but not by 5.2.2
Pipeline that generated this bug
Logs for the pipeline run
File that generated the pipeline

This run considered 200 popular TS repos from GH (after skipping the top 0).

Successfully analyzed 109 of 200 visited repos

Outcome	Count
Detected interesting changes	1
Detected no interesting changes	108
Git clone failed	2
Package install failed	31
Project-graph error in old TS	5
Too many errors in old TS	49
Unknown failure	4

Investigation Status

Repo	Errors	Outcome
graphql/graphql-js	5

[typescript-bot]

graphql/graphql-js

1 of 2 projects failed to build with the old tsc and were ignored

tsconfig.json

• error TS7022: 'doubles' implicitly has type 'any' because it does not have a type annotation and is referenced directly or indirectly in its own initializer.
  • src/execution/__tests__/mapAsyncIterable-test.ts#L144
  • src/execution/__tests__/mapAsyncIterable-test.ts#L208
• error TS2345: Argument of type '{ [Symbol.asyncIterator](): ...; next(): Promise<{ done: boolean; value: number; }>; }' is not assignable to parameter of type 'AsyncIterable<number> | AsyncGenerator<number, number, void>'.
  • src/execution/__tests__/mapAsyncIterable-test.ts#L144
  • src/execution/__tests__/mapAsyncIterable-test.ts#L208
• error TS2322: Type '{ [variable: string]: unknown; } | undefined' is not assignable to type '{ [variable: string]: unknown; }'.
  • src/execution/execute.ts#L367
• error TS2375: Type 'IteratorResult<T, R>' is not assignable to type 'IteratorResult<U, R>' with 'exactOptionalPropertyTypes: true'. Consider adding 'undefined' to the types of the target's properties.
  • src/execution/mapAsyncIterable.ts#L17
• error TS2345: Argument of type 'T | R' is not assignable to parameter of type 'T'.
  • src/execution/mapAsyncIterable.ts#L21

[DanielRosenwasser]

@jakebailey would you be able to help bisect the error here?

[jakebailey]

Bisects to #54777, shockingly. @Andarist

[Andarist]

Extracted 3 repro cases out of this (1, 2, 3). I'll investigate this in the coming days - thanks for the ping!