is-whitespace-character

Check if a character is whitespace.

What is this?

This is a function that checks if a given character is a white space character: \s, which equals all Unicode Space Separators (including [ \t\v\f]), the BOM (\uFEFF), and line terminators ([\n\r\u2028\u2029]).

When should I use this?

Not often, as it’s relatively simple to do yourself. This package exists because it’s needed in several related packages, at which point it becomes useful to defer to one shared function.

Install

This package is ESM only. In Node.js (version 14.14+, 16.0+), install with npm:

npm install is-whitespace-character

In Deno with esm.sh:

import {isWhitespaceCharacter} from 'https://esm.sh/is-whitespace-character@2'

In browsers with esm.sh:

<script type="module">
  import {isWhitespaceCharacter} from 'https://esm.sh/is-whitespace-character@2?bundle'
</script>

Use

import {isWhitespaceCharacter} from 'is-whitespace-character'

isWhitespaceCharacter(' ') // => true
isWhitespaceCharacter('\n') // => true
isWhitespaceCharacter('\uFEFF') // => true
isWhitespaceCharacter('_') // => false
isWhitespaceCharacter('a') // => false
isWhitespaceCharacter('💩') // => false

API

This package exports the identifier isWhitespaceCharacter. There is no default export.