ts-extras
Version:
Essential utilities for TypeScript projects
22 lines (16 loc) • 778 B
JavaScript
/* eslint-disable @typescript-eslint/no-restricted-types */
/**
A strongly-typed version of `Object.keys()`.
This is useful since `Object.keys()` always returns an array of strings. This function returns a strongly-typed array of the keys of the given object.
- [Explanation](https://stackoverflow.com/questions/55012174/why-doesnt-object-keys-return-a-keyof-type-in-typescript)
- [TypeScript issues about this](https://github.com/microsoft/TypeScript/issues/45390)
@example
```
import {objectKeys} from 'ts-extras';
const stronglyTypedItems = objectKeys({a: 1, b: 2, c: 3}); // => Array<'a' | 'b' | 'c'>
const untypedItems = Object.keys({a: 1, b: 2, c: 3}); // => Array<string>
```
@category Improved builtin
@category Type guard
*/
export const objectKeys = Object.keys;