super-utils-plus/dist/object/mapValues.js

A superior alternative to Lodash with improved performance, TypeScript support, and developer experience

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.mapValues = mapValues;
exports.mapKeys = mapKeys;
const is_1 = require("../utils/is");
/**
 * Creates an object with the same keys as object and values generated by
 * running each own enumerable string keyed property of object through
 * iteratee. The iteratee is invoked with three arguments:
 * (value, key, object).
 *
 * @param object - The object to iterate over
 * @param iteratee - The function invoked per iteration
 * @returns The new mapped object
 *
 * @example
 * ```ts
 * const users = {
 *   'fred':    { 'user': 'fred',    'age': 40 },
 *   'pebbles': { 'user': 'pebbles', 'age': 1 }
 * };
 *
 * mapValues(users, function(o) { return o.age; });
 * // => { 'fred': 40, 'pebbles': 1 } (iteration order is not guaranteed)
 *
 * // The `_.property` iteratee shorthand.
 * mapValues(users, 'age');
 * // => { 'fred': 40, 'pebbles': 1 } (iteration order is not guaranteed)
 * ```
 */
function mapValues(object, iteratee) {
    if (!(0, is_1.isObject)(object)) {
        return {};
    }
    // Convert iteratee to a function if it's a string
    let iterateeFn;
    if (typeof iteratee === 'string') {
        const key = iteratee;
        iterateeFn = (value) => {
            return (0, is_1.isObject)(value) ? value[key] : undefined;
        };
    }
    else {
        iterateeFn = iteratee;
    }
    const result = {};
    for (const key in object) {
        if (Object.prototype.hasOwnProperty.call(object, key)) {
            result[key] = iterateeFn(object[key], key, object);
        }
    }
    return result;
}
/**
 * Creates an object with the same values as object and keys generated
 * by running each own enumerable string keyed property of object through
 * iteratee. The iteratee is invoked with three arguments:
 * (value, key, object).
 *
 * @param object - The object to iterate over
 * @param iteratee - The function invoked per iteration
 * @returns The new mapped object
 *
 * @example
 * ```ts
 * mapKeys({ 'a': 1, 'b': 2 }, function(value, key) {
 *   return key + value;
 * });
 * // => { 'a1': 1, 'b2': 2 }
 * ```
 */
function mapKeys(object, iteratee) {
    if (!(0, is_1.isObject)(object)) {
        return {};
    }
    const result = {};
    for (const key in object) {
        if (Object.prototype.hasOwnProperty.call(object, key)) {
            const value = object[key];
            const newKey = iteratee(value, key, object);
            result[newKey] = value;
        }
    }
    return result;
}