1 | "use strict";
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2 | Object.defineProperty(exports, "__esModule", { value: true });
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3 | function mergeProps(obj, newObj) {
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4 | if (newObj === undefined) {
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5 | return undefined;
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6 | }
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7 |
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8 | if (typeof obj === 'undefined' ||
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9 | !Object.getPrototypeOf(obj).isPrototypeOf(newObj) ||
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10 | (newObj.constructor.name !== 'Object' && newObj.constructor.name !== 'Array')) {
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11 | return newObj;
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12 | }
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13 | var clone = {};
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14 | Object.keys(newObj).forEach(function (key) {
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15 | var exists = obj.hasOwnProperty(key);
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16 | if (!exists) {
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17 | clone[key] = newObj[key];
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18 | }
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19 | else {
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20 | if (typeof obj[key] === 'object' && !Array.isArray(obj[key])) {
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21 | clone[key] = mergeProps(obj[key], newObj[key]);
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22 | }
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23 | else {
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24 | clone[key] = newObj[key];
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25 | }
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26 | }
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27 | });
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28 |
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29 | Object.keys(obj).forEach(function (key) {
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30 | var exists = newObj.hasOwnProperty(key);
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31 | if (!exists) {
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32 | clone[key] = obj[key];
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33 | }
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34 | });
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35 |
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36 | Object.setPrototypeOf(clone, Object.getPrototypeOf(obj));
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37 | return clone;
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38 | }
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39 | exports.default = mergeProps;
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