define(function() {
    /**
     * Contains all Unicode white-spaces. Taken from
     * http://en.wikipedia.org/wiki/Whitespace_character.
     */
    return [
        ' ', '\n', '\r', '\t', '\f', '\v', '\u00A0', '\u1680', '\u180E',
        '\u2000', '\u2001', '\u2002', '\u2003', '\u2004', '\u2005', '\u2006',
        '\u2007', '\u2008', '\u2009', '\u200A', '\u2028', '\u2029', '\u202F',
        '\u205F', '\u3000'
    ];
});