Run results for: Diacritics removal (+ lowercase2)

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/113.0.0.0 Safari/537.36

Browser: Chrome 113

Operating system: Windows

Device Platform: Desktop

Date tested: 11 months ago

Test name	Executions per second
Old	19497.3 Ops/sec
New	403988.2 Ops/sec

Script Preparation code:

const replaceMap= {
  Æ: 'AE',
  æ: 'ae',
  Ꜳ: 'AA',
  ꜳ: 'aa',
  ꬱ: 'aə',
  Ꜵ: 'AO',
  ꜵ: 'ao',
  Ꜷ: 'AU',
  ꜷ: 'au',
  Ꜹ: 'AV',
  Ꜻ: 'AV',
  ꜹ: 'av',
  ꜻ: 'av',
  Ꜽ: 'AY',
  ꜽ: 'ay',
  ꭁ: 'əø',
  ﬀ: 'f‌f',
  ﬃ: 'f‌f‌i',
  ﬄ: 'f‌f‌l',
  ﬁ: 'f‌i',
  ﬂ: 'f‌l',
  '℔': 'lb',
  Ƕ: 'Hv',
  ƕ: 'hv',
  ꭢ: 'ɔe',
  ﬆ: 'st',
  ﬅ: 'ſt',
  ᵫ: 'ue',
  Ỻ: 'lL',
  ỻ: 'll',
  Œ: 'OE',
  œ: 'oe',
  Ꝏ: 'OO',
  ꝏ: 'oo',
  ẞ: 'ſs',
  ß: 'ſz',
  Ꜩ: 'TZ',
  ꜩ: 'tz',
  Ꝡ: 'VY',
  ꝡ: 'vy',
}
const replacementsRegex = new RegExp(Object.keys(replaceMap).join('|'), 'g')
window.removeDiacritics = (value) => {
    return value.toLowerCase()
        .normalize('NFD')
        .replace(/[\u0300-\u036f]/g, '')
        .replace(replacementsRegex, (char) => {
            return replaceMap[char] || char
        })
}

window.oldRemoveDiacritics = function(s) {
    if (!s)
        return s;

    let r = s.toLowerCase();

    r = r.replace(/[àáâãäå]/g, 'a');
    r = r.replace(/æ/g, 'ae');
    r = r.replace(/ç/g, 'c');
    r = r.replace(/[èéêë]/g, 'e');
    r = r.replace(/[ìíîï]/g, 'i');
    r = r.replace(/ñ/g, 'n');
    r = r.replace(/[òóôõö]/g, 'o');
    r = r.replace(/œ/g, 'oe');
    r = r.replace(/[ùúûü]/g, 'u');
    r = r.replace(/[ýÿ]/g, 'y');
    r = r.replace(/\\W/g, '');

    // To prevent some weird behaviors with MacOS diacritics
    r = _(r).map(function(char) {
        return String.fromCharCode(char.charCodeAt(0));
    });

    return r.join('');
};

Tests:

Old
oldRemoveDiacritics(` Dji pou magnî do vêre, çoula m' freut nén må - æsope - robot œuf Lorem, ipsum dolor sit amet consectetur adipisicing elit. Reiciendis voluptatem dolores molestiae possimus laudantium consequuntur placeat earum neque maxime modi quasi fugiat quae inventore, illo in corporis corrupti esse a! `)
New
removeDiacritics(` Dji pou magnî do vêre, çoula m' freut nén må - æsope - robot œuf Lorem, ipsum dolor sit amet consectetur adipisicing elit. Reiciendis voluptatem dolores molestiae possimus laudantium consequuntur placeat earum neque maxime modi quasi fugiat quae inventore, illo in corporis corrupti esse a! `)

Run results for: Diacritics removal (+ lowercase2)

Old

New