Run results for: Diacritics removal

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/131.0.0.0 Safari/537.36

Browser: Chrome 131

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: one year ago

Benchmark engine: Benchmark.js

New

359K/s

Old

27K/s

View exact numbers

Test name	Executions per second
✓ New	359,406 Ops/sec
Old	26,697 Ops/sec

Script Preparation code:

const replaceMap = {
    œ: 'oe',
    æ: 'ae',
}
const replacementsRegex = new RegExp(Object.keys(replaceMap).join('|'), 'g')
window.removeDiacritics = (value) => {
    return value
        .normalize('NFD')
        .replace(/[\u0300-\u036f]/g, '')
        .replace(replacementsRegex, (char) => {
            return replaceMap[char] || char
        })
}

window.oldRemoveDiacritics = function(s) {
    if (!s)
        return s;

    let r = s;

    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! `)