locutus/swift/String/trimmingCharacters.js

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

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.trimmingCharacters = trimmingCharacters;
const escapeForCharacterClass = (value) => value.replace(/[\\[\]-]/g, '\\$&');
function trimmingCharacters(str, characters = ' \n\r\t') {
    //  discuss at: https://locutus.io/swift/String/trimmingCharacters/
    // original by: Kevin van Zonneveld (https://kvz.io)
    //      note 1: Trims leading and trailing characters found in the provided character set, similar to Swift trimmingCharacters(in:).
    //   example 1: trimmingCharacters('  hello \n')
    //   returns 1: 'hello'
    //   example 2: trimmingCharacters('--swift--', '-')
    //   returns 2: 'swift'
    //   example 3: trimmingCharacters('xyxhelloxy', 'xy')
    //   returns 3: 'hello'
    const source = String(str);
    const set = String(characters);
    if (set === '') {
        return source;
    }
    const escapedSet = escapeForCharacterClass(set);
    const pattern = new RegExp(`^[${escapedSet}]+|[${escapedSet}]+$`, 'g');
    return source.replace(pattern, '');
}