locutus/esm/swift/String/replacingOccurrences.js

Locutus other languages' standard libraries to JavaScript for fun and educational purposes

const escapeRegExp = (value) => value.replace(/[.*+?^${}()|[\]\\]/g, '\\$&');
export function replacingOccurrences(str, target, replacement, caseInsensitive = false) {
    //  discuss at: https://locutus.io/swift/String/replacingOccurrences/
    // original by: Kevin van Zonneveld (https://kvz.io)
    //      note 1: Replaces every occurrence of target in str, similar to Swift replacingOccurrences(of:with:options:).
    //   example 1: replacingOccurrences('hello world', 'l', 'L')
    //   returns 1: 'heLLo worLd'
    //   example 2: replacingOccurrences('Swift swift SWIFT', 'swift', 'ts', true)
    //   returns 2: 'ts ts ts'
    //   example 3: replacingOccurrences('abcabc', 'ab', '#')
    //   returns 3: '#c#c'
    const source = String(str);
    const needle = String(target);
    const nextValue = String(replacement);
    if (needle === '') {
        return source;
    }
    if (caseInsensitive) {
        return source.replace(new RegExp(escapeRegExp(needle), 'gi'), nextValue);
    }
    return source.replaceAll(needle, nextValue);
}