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=== tests/cases/compiler/keyofIsLiteralContexualType.ts ===
// keyof T is a literal contextual type
function foo<T extends { a: string, b: string }>() {
>foo : Symbol(foo, Decl(keyofIsLiteralContexualType.ts, 0, 0))
>T : Symbol(T, Decl(keyofIsLiteralContexualType.ts, 2, 13))
>a : Symbol(a, Decl(keyofIsLiteralContexualType.ts, 2, 24))
>b : Symbol(b, Decl(keyofIsLiteralContexualType.ts, 2, 35))
let a: (keyof T)[] = ["a", "b"];
>a : Symbol(a, Decl(keyofIsLiteralContexualType.ts, 3, 7))
>T : Symbol(T, Decl(keyofIsLiteralContexualType.ts, 2, 13))
let b: (keyof T)[] = ["a", "b", "c"];
>b : Symbol(b, Decl(keyofIsLiteralContexualType.ts, 4, 7))
>T : Symbol(T, Decl(keyofIsLiteralContexualType.ts, 2, 13))
}
// Repro from #12455
declare function pick<T, K extends keyof T>(obj: T, propNames: K[]): Pick<T, K>;
>pick : Symbol(pick, Decl(keyofIsLiteralContexualType.ts, 5, 1))
>T : Symbol(T, Decl(keyofIsLiteralContexualType.ts, 9, 22))
>K : Symbol(K, Decl(keyofIsLiteralContexualType.ts, 9, 24))
>T : Symbol(T, Decl(keyofIsLiteralContexualType.ts, 9, 22))
>obj : Symbol(obj, Decl(keyofIsLiteralContexualType.ts, 9, 44))
>T : Symbol(T, Decl(keyofIsLiteralContexualType.ts, 9, 22))
>propNames : Symbol(propNames, Decl(keyofIsLiteralContexualType.ts, 9, 51))
>K : Symbol(K, Decl(keyofIsLiteralContexualType.ts, 9, 24))
>Pick : Symbol(Pick, Decl(lib.es5.d.ts, --, --))
>T : Symbol(T, Decl(keyofIsLiteralContexualType.ts, 9, 22))
>K : Symbol(K, Decl(keyofIsLiteralContexualType.ts, 9, 24))
let x = pick({ a: 10, b: 20, c: 30 }, ["a", "c"]);
>x : Symbol(x, Decl(keyofIsLiteralContexualType.ts, 11, 3))
>pick : Symbol(pick, Decl(keyofIsLiteralContexualType.ts, 5, 1))
>a : Symbol(a, Decl(keyofIsLiteralContexualType.ts, 11, 14))
>b : Symbol(b, Decl(keyofIsLiteralContexualType.ts, 11, 21))
>c : Symbol(c, Decl(keyofIsLiteralContexualType.ts, 11, 28))
let b = x.b; // Error
>b : Symbol(b, Decl(keyofIsLiteralContexualType.ts, 12, 3))
>x : Symbol(x, Decl(keyofIsLiteralContexualType.ts, 11, 3))
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