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=== tests/cases/compiler/noObjectKeysToKeyofT.ts ===
// Do not change Object.keys to return keyof T.
// The current return type (string[]) is intentional.
Object.keys({ a: 0 }).push("b");
>Object.keys({ a: 0 }).push("b") : number
>Object.keys({ a: 0 }).push : (...items: string[]) => number
>Object.keys({ a: 0 }) : string[]
>Object.keys : { (o: object): string[]; (o: {}): string[]; }
>Object : ObjectConstructor
>keys : { (o: object): string[]; (o: {}): string[]; }
>{ a: 0 } : { a: number; }
>a : number
>0 : 0
>push : (...items: string[]) => number
>"b" : "b"
// See also
// https://stackoverflow.com/questions/55012174/why-doesnt-object-keys-return-a-keyof-type-in-typescript
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