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Async version of `string.prototype.replace`
const asyncStringReplace = async (str, regex, aReplacer) => {
regex = new RegExp(regex, regex.flags + regex.flags.includes('g')? '': 'g');
const replacedParts = [];
let match;
let i = 0;
while ((match = regex.exec(str)) !== null) {
// put non matching string
replacedParts.push(str.slice(i, match.index));
// call the async replacer function with the matched array spreaded
i = regex.lastIndex;
// put the rest of str
// wait for aReplacer calls to finish and join them back into string
return (await Promise.all(replacedParts)).join('');
exports default asyncStringReplace;
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