locutus/php/array/array_reverse.js

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

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.array_reverse = array_reverse;
const _phpTypes_ts_1 = require("../_helpers/_phpTypes.js");
function array_reverse(array, preserveKeys) {
    //  discuss at: https://locutus.io/php/array_reverse/
    // original by: Kevin van Zonneveld (https://kvz.io)
    // improved by: Karol Kowalski
    //   example 1: array_reverse( [ 'php', '4.0', ['green', 'red'] ], true)
    //   returns 1: { 2: ['green', 'red'], 1: '4.0', 0: 'php'}
    const preserve = preserveKeys === true;
    let result;
    if (Array.isArray(array) && !preserve) {
        result = array.slice(0).reverse();
    }
    else {
        const source = (0, _phpTypes_ts_1.toPhpArrayObject)(array);
        if (preserve) {
            const keys = Object.keys(source);
            const reversed = {};
            for (let index = keys.length - 1; index >= 0; index -= 1) {
                const key = keys[index];
                if (typeof key === 'string') {
                    reversed[key] = source[key];
                }
            }
            result = reversed;
        }
        else {
            result = Object.values(source).reverse();
        }
    }
    return result;
}