locutus/php/strings/str_split.js

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

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.str_split = str_split;
function str_split(string, splitLength) {
    //      discuss at: https://locutus.io/php/str_split/
    // parity verified: PHP 8.3
    //     original by: Martijn Wieringa
    //     improved by: Brett Zamir (https://brett-zamir.me)
    //     bugfixed by: Onno Marsman (https://twitter.com/onnomarsman)
    //      revised by: Theriault (https://github.com/Theriault)
    //      revised by: Rafał Kukawski (https://blog.kukawski.pl)
    //        input by: Bjorn Roesbeke (https://www.bjornroesbeke.be/)
    //       example 1: str_split('Hello Friend', 3)
    //       returns 1: ['Hel', 'lo ', 'Fri', 'end']
    const normalizedSplitLength = splitLength === null || typeof splitLength === 'undefined' ? 1 : Number(splitLength);
    if (string === null || normalizedSplitLength < 1 || Number.isNaN(normalizedSplitLength)) {
        return false;
    }
    const input = String(string);
    const chunks = [];
    let pos = 0;
    const len = input.length;
    while (pos < len) {
        chunks.push(input.slice(pos, (pos += normalizedSplitLength)));
    }
    return chunks;
}