ts-flatten-array/lib/flatten-array.js

Array Flatten with Typescript

"use strict";
/**
 * @title Flatten Array in Typescript
 * @author Safa Selim
 * @date 02.27.22
 */
var __spreadArray = (this && this.__spreadArray) || function (to, from, pack) {
    if (pack || arguments.length === 2) for (var i = 0, l = from.length, ar; i < l; i++) {
        if (ar || !(i in from)) {
            if (!ar) ar = Array.prototype.slice.call(from, 0, i);
            ar[i] = from[i];
        }
    }
    return to.concat(ar || Array.prototype.slice.call(from));
};
Object.defineProperty(exports, "__esModule", { value: true });
exports.flattenArray = void 0;
/**
 * Flattens the nested arrays to one single array.
 * @function flattenArray
 * @param inputArray NestedArray<T>
 * @returns Array<T>
 */
function flattenArray(inputArray) {
    if (!Array.isArray(inputArray))
        return inputArray ? [inputArray] : [];
    if (!(inputArray instanceof Array))
        return [];
    return inputArray.reduce(function (acc, item) {
        if (Array.isArray(item)) {
            return __spreadArray(__spreadArray([], acc, true), flattenArray(item), true);
        }
        return __spreadArray(__spreadArray([], acc, true), [item], false);
    }, []);
}
exports.flattenArray = flattenArray;