1 | 'use strict';
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2 |
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3 |
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4 |
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5 |
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6 | var envHasBigInt64Array = typeof BigInt64Array !== 'undefined';
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7 |
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8 |
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9 | module.exports = function equal(a, b) {
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10 | if (a === b) return true;
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11 |
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12 | if (a && b && typeof a == 'object' && typeof b == 'object') {
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13 | if (a.constructor !== b.constructor) return false;
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14 |
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15 | var length, i, keys;
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16 | if (Array.isArray(a)) {
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17 | length = a.length;
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18 | if (length != b.length) return false;
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19 | for (i = length; i-- !== 0;)
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20 | if (!equal(a[i], b[i])) return false;
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21 | return true;
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22 | }
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23 |
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24 |
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25 | if ((a instanceof Map) && (b instanceof Map)) {
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26 | if (a.size !== b.size) return false;
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27 | for (i of a.entries())
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28 | if (!b.has(i[0])) return false;
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29 | for (i of a.entries())
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30 | if (!equal(i[1], b.get(i[0]))) return false;
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31 | return true;
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32 | }
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33 |
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34 | if ((a instanceof Set) && (b instanceof Set)) {
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35 | if (a.size !== b.size) return false;
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36 | for (i of a.entries())
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37 | if (!b.has(i[0])) return false;
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38 | return true;
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39 | }
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40 |
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41 | if (ArrayBuffer.isView(a) && ArrayBuffer.isView(b)) {
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42 | length = a.length;
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43 | if (length != b.length) return false;
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44 | for (i = length; i-- !== 0;)
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45 | if (a[i] !== b[i]) return false;
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46 | return true;
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47 | }
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48 |
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49 |
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50 | if (a.constructor === RegExp) return a.source === b.source && a.flags === b.flags;
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51 | if (a.valueOf !== Object.prototype.valueOf) return a.valueOf() === b.valueOf();
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52 | if (a.toString !== Object.prototype.toString) return a.toString() === b.toString();
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53 |
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54 | keys = Object.keys(a);
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55 | length = keys.length;
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56 | if (length !== Object.keys(b).length) return false;
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57 |
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58 | for (i = length; i-- !== 0;)
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59 | if (!Object.prototype.hasOwnProperty.call(b, keys[i])) return false;
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60 |
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61 | for (i = length; i-- !== 0;) {
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62 | var key = keys[i];
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63 | if (!equal(a[key], b[key])) return false;
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64 | }
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65 |
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66 | return true;
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67 | }
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68 |
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69 |
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70 | return a!==a && b!==b;
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71 | };
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