57 lines
1.1 KiB
JavaScript
57 lines
1.1 KiB
JavaScript
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'use strict';
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var isObj = require('is-obj');
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var hasOwnProperty = Object.prototype.hasOwnProperty;
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var propIsEnumerable = Object.prototype.propertyIsEnumerable;
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function toObject(val) {
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if (val === null || val === undefined) {
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throw new TypeError('Sources cannot be null or undefined');
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}
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return Object(val);
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}
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function base(to, from) {
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if (to === from) {
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return to;
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}
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from = Object(from);
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for (var key in from) {
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if (hasOwnProperty.call(from, key)) {
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var val = from[key];
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if (Array.isArray(val)) {
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to[key] = val.slice();
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} else if (isObj(val)) {
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to[key] = base(to[key] || {}, val);
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} else if (val !== undefined) {
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to[key] = val;
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}
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}
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}
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if (Object.getOwnPropertySymbols) {
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var symbols = Object.getOwnPropertySymbols(from);
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for (var i = 0; i < symbols.length; i++) {
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if (propIsEnumerable.call(from, symbols[i])) {
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to[symbols[i]] = from[symbols[i]];
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}
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}
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}
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return to;
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}
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module.exports = function deepAssign(target) {
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target = toObject(target);
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for (var s = 1; s < arguments.length; s++) {
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base(target, arguments[s]);
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}
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return target;
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};
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