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PromiseLike.then returns PromiseLike<Promise<T>> instead of PromiseLike<T> #17862
Description
TypeScript Version: nightly (2.6.0-dev.20170817)
Code
declare const p: PromiseLike<string>;
const x: PromiseLike<number> = p.then(() => Promise.resolve(1));Expected behavior:
No error.
Actual behavior:
src/a.ts(2,7): error TS2322: Type 'PromiseLike<Promise<number>>' is not assignable to type 'PromiseLike<number>'.
Type 'Promise<number>' is not assignable to type 'number'.
Discovered in DefinitelyTyped/types/xadesjs.
Activity
spion commentedon Jan 19, 2018
FYI this is now also happening in mainline TS 2.6.2
jakebailey commentedon Feb 22, 2023
Old issue, but this was fixed back in #40002.