Normalize-html-whitespace NPM

normalize-html-whitespace

Safely remove repeating whitespace from HTML text.

Using \s to normalize HTML whitespace will strip out characters that are actually rendered by a web browser. Such would be classified as a lossy change and would produce a different visual result. This package will collapse multiple whitespace characters down to a single space, while ignoring the following characters:

\u00a0 or   (non-breaking space)
\ufeff or  (zero-width non-breaking space)

…as well as these lesser-known ones:

\u1680 or   (Ogham space mark)
\u180e or ᠎ (Mongolian vowel separator)
\u2000 or   (en quad)
\u2001 or   (em quad)
\u2002 or   (en space)
\u2003 or   (em space)
\u2004 or   (three-per-em space)
\u2005 or   (four-per-em space)
\u2006 or   (six-per-em space)
\u2007 or   (figure space)
\u2008 or   (punctuation space)
\u2009 or   (thin space)
\u200a or   (hair space)
\u2028 or   (line separator)
\u2029 or   (paragraph separator)
\u202f or   (narrow non-breaking space)
\u205f or   (medium mathematical space)
\u3000 or 　 (ideographic space)

For the sake of completeness, the following characters which are not part of \s will also not be affected:

\u200b or  (zero-width breaking space)

Note: this package does not contain an HTML parser. It is meant to be used on text nodes only.

Installation

Node.js >= 8 is required. Type this at the command line:

npm install normalize-html-whitespace

Usage

const normalizeWhitespace = require('normalize-html-whitespace');

normalizeWhitespace('  foo bar     baz ');
//-> ' foo bar baz '