Function isNullOrWhitespace

isNullOrWhitespace<T>(value: T | null | undefined): value is null | undefined

Checks if value can be considered empty.

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

Type Parameters

T

Parameters

value: T | null | undefined

Returns value is null | undefined