isNull

Check whether the given value is nullable (undefined or null)

Import

import { isNull } from '@fullstacksjs/toolbox';

Signature

function isNull(x: unknown): x is Nullish {};

Examples

isNull(undefined) // true
isNull(null)      // true
isNull('null')    // false
isNull(0)         // false
isNull([])        // false
isNull({})        // false
isNull(false)     // false

isNotNull isObject