Object.keys should return keyof T

[fregante]

Playground: https://www.typescriptlang.org/play/#src=const%20feature%20%3D%20%7B%0D%0A%09description%3A%20''%2C%0D%0A%09screenshot%3A%20''%2C%0D%0A%09disabled%3A%20''%0D%0A%7D%3B%0D%0A%0D%0Aconst%20keys%20%3D%20Object.keys(feature)%3B

const feature = {
	description: '',
	screenshot: '',
	disabled: ''
};

const list = Object.keys(feature);

Current

keys(o: {}): string[];

typeof list = string[]

Expected

keys<T extends object>(o: T): Array<keyof T>;

typeof list = Array<"description" | "screenshot" | "disabled">

Workaround

const feature = {
	description: '',
	screenshot: '',
	disabled: ''
};

const list = Object.keys(feature) as Array<keyof typeof feature>;

[saschanaz]

Object.keys is not on TSJS-lib-generator. It should be directly fixed in TypeScript repo.

[fregante]

Indeed, moved to microsoft/TypeScript#32321