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generics that extend conditional types that use another generic don't work #41743
Description
TypeScript Version: 4.2.0-dev.20201201
Search Terms:
Conditional types generics
Code
interface Foo<T, U extends T extends number? any: any> {}
function foo<T>(bar: Foo<T, number>) {}Expected behavior:
No error, U is any
Actual behavior:
Error 2344: Type 'number' does not satisfy the constraint 'T extends number? any: any'
Playground Link:
https://www.typescriptlang.org/play?ts=4.2.0-dev.20201201#code/JYOwLgpgTgZghgYwgAgGIHt0B4AqAaZAVWQgA9IQATAZ2RxPIitpAFcBbAI2gH5k4QATwBc-IQD5kAbwC+AWABQMViARhg6EMhiZc4gBSc4UURmz5kbLtHEBKaTKA
Related Issues:
Maybe #41040 ?
Activity
[-]generics that extend conditional types that use another generic don't worm[/-][+]generics that extend conditional types that use another generic don't work[/+]RyanCavanaugh commentedon Dec 1, 2020
Looks like a duplicate of #30639