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isNil

A function that checks whether a given argument is null or undefined, and if so, narrows the type of the argument to undefined | null.


Code​

🔗 View source code

Interface​

typescript
const isNil: <T>(val: T | null | undefined) => val is null | undefined

Usage​

typescript
import { isNil } from '@modern-kit/utils';

isNil(undefined); // true
isNil(null); // true

isNil(1); // false
isNil(false); // false
isNil("str"); // false
isNil({}); // false