TypeScript Version: 3.8.0-dev.20200111

Search Terms: "BigInt"

Code

declare function test<A, B extends A>(): void;

test<{t?: string}, object>();
test<{t?: string}, bigint>();
test<{t?: string}, number>();

Expected behavior: bigint should behave like number.

Actual behavior: BigInt instead behaves like a object.

Playground Link: https://www.typescriptlang.org/play/?target=99&ts=3.8.0-dev.20200111#code/CYUwxgNghgTiAEAzArgOzAFwJYHtXwxAGcMAeAQQBp4AheEAD0NWCPnID4AKASgC54ANxxZgAbgBQEwiVIBvDAH4BJGFlQBzAL7UcAIwBW4DNx6SZZBcvir126nqwb1J3ueKWlKjGs074qMgAtnogMKZiQA

Related Issues:

Main BigInt Issue: #33871