bindingPatternContextualTypeDoesNotCauseWidening1.symbols

//// [tests/cases/compiler/bindingPatternContextualTypeDoesNotCauseWidening1.ts] ////

=== bindingPatternContextualTypeDoesNotCauseWidening1.ts ===
declare function pick<O, T extends keyof O>(keys: T[], obj?: O): Pick<O, T>;
>pick : Symbol(pick, Decl(bindingPatternContextualTypeDoesNotCauseWidening1.ts, 0, 0))
>O : Symbol(O, Decl(bindingPatternContextualTypeDoesNotCauseWidening1.ts, 0, 22))
>T : Symbol(T, Decl(bindingPatternContextualTypeDoesNotCauseWidening1.ts, 0, 24))
>O : Symbol(O, Decl(bindingPatternContextualTypeDoesNotCauseWidening1.ts, 0, 22))
>keys : Symbol(keys, Decl(bindingPatternContextualTypeDoesNotCauseWidening1.ts, 0, 44))
>T : Symbol(T, Decl(bindingPatternContextualTypeDoesNotCauseWidening1.ts, 0, 24))
>obj : Symbol(obj, Decl(bindingPatternContextualTypeDoesNotCauseWidening1.ts, 0, 54))
>O : Symbol(O, Decl(bindingPatternContextualTypeDoesNotCauseWidening1.ts, 0, 22))
>Pick : Symbol(Pick, Decl(lib.es5.d.ts, --, --))
>O : Symbol(O, Decl(bindingPatternContextualTypeDoesNotCauseWidening1.ts, 0, 22))
>T : Symbol(T, Decl(bindingPatternContextualTypeDoesNotCauseWidening1.ts, 0, 24))

const _    = pick(['b'], { a: 'a', b: 'b' }); // T: "b"
>_ : Symbol(_, Decl(bindingPatternContextualTypeDoesNotCauseWidening1.ts, 1, 5))
>pick : Symbol(pick, Decl(bindingPatternContextualTypeDoesNotCauseWidening1.ts, 0, 0))
>a : Symbol(a, Decl(bindingPatternContextualTypeDoesNotCauseWidening1.ts, 1, 26))
>b : Symbol(b, Decl(bindingPatternContextualTypeDoesNotCauseWidening1.ts, 1, 34))

const {  } = pick(['b'], { a: 'a', b: 'b' }); // T: "b"
>pick : Symbol(pick, Decl(bindingPatternContextualTypeDoesNotCauseWidening1.ts, 0, 0))
>a : Symbol(a, Decl(bindingPatternContextualTypeDoesNotCauseWidening1.ts, 2, 26))
>b : Symbol(b, Decl(bindingPatternContextualTypeDoesNotCauseWidening1.ts, 2, 34))