@newdash/newdash/defaults.js

javascript/typescript utility library

"use strict";
var __importDefault = (this && this.__importDefault) || function (mod) {
    return (mod && mod.__esModule) ? mod : { "default": mod };
};
Object.defineProperty(exports, "__esModule", { value: true });
exports.defaults = void 0;
const eq_1 = __importDefault(require("./eq"));
/**
 * @ignore
 */
const objectProto = Object.prototype;
/**
 * @ignore
 */
const hasOwnProperty = objectProto.hasOwnProperty;
/**
 * Assigns own and inherited enumerable string keyed properties of source
 * objects to the destination object for all destination properties that
 * resolve to `undefined`. Source objects are applied from left to right.
 * Once a property is set, additional values of the same property are ignored.
 *
 * **Note:** This method mutates `object`.
 *
 * @since 5.7.0
 * @category Object
 * @param object The destination object.
 * @param sources The source objects.
 * @returns Returns `object`.
 * @see [[defaultsDeep]]
 * @example
 *
 * ```js
 * defaults({ 'a': 1 }, { 'b': 2 }, { 'a': 3 })
 * // => { 'a': 1, 'b': 2 }
 * ```
 */
function defaults(object, ...sources) {
    object = Object(object);
    sources.forEach((source) => {
        if (source != null) {
            source = Object(source);
            for (const key in source) {
                const value = object[key];
                if (value === undefined ||
                    ((0, eq_1.default)(value, objectProto[key]) && !hasOwnProperty.call(object, key))) {
                    object[key] = source[key];
                }
            }
        }
    });
    return object;
}
exports.defaults = defaults;
exports.default = defaults;