source: trip-planner-front/node_modules/fast-deep-equal/es6/react.js@ fa375fe

Last change on this file since fa375fe was 6a3a178, checked in by Ema <ema_spirova@…>, 3 years ago

initial commit

  • Property mode set to 100644
File size: 2.2 KB
Line 
1'use strict';
2
3// do not edit .js files directly - edit src/index.jst
4
5
6 var envHasBigInt64Array = typeof BigInt64Array !== 'undefined';
7
8
9module.exports = function equal(a, b) {
10 if (a === b) return true;
11
12 if (a && b && typeof a == 'object' && typeof b == 'object') {
13 if (a.constructor !== b.constructor) return false;
14
15 var length, i, keys;
16 if (Array.isArray(a)) {
17 length = a.length;
18 if (length != b.length) return false;
19 for (i = length; i-- !== 0;)
20 if (!equal(a[i], b[i])) return false;
21 return true;
22 }
23
24
25 if ((a instanceof Map) && (b instanceof Map)) {
26 if (a.size !== b.size) return false;
27 for (i of a.entries())
28 if (!b.has(i[0])) return false;
29 for (i of a.entries())
30 if (!equal(i[1], b.get(i[0]))) return false;
31 return true;
32 }
33
34 if ((a instanceof Set) && (b instanceof Set)) {
35 if (a.size !== b.size) return false;
36 for (i of a.entries())
37 if (!b.has(i[0])) return false;
38 return true;
39 }
40
41 if (ArrayBuffer.isView(a) && ArrayBuffer.isView(b)) {
42 length = a.length;
43 if (length != b.length) return false;
44 for (i = length; i-- !== 0;)
45 if (a[i] !== b[i]) return false;
46 return true;
47 }
48
49
50 if (a.constructor === RegExp) return a.source === b.source && a.flags === b.flags;
51 if (a.valueOf !== Object.prototype.valueOf) return a.valueOf() === b.valueOf();
52 if (a.toString !== Object.prototype.toString) return a.toString() === b.toString();
53
54 keys = Object.keys(a);
55 length = keys.length;
56 if (length !== Object.keys(b).length) return false;
57
58 for (i = length; i-- !== 0;)
59 if (!Object.prototype.hasOwnProperty.call(b, keys[i])) return false;
60
61 for (i = length; i-- !== 0;) {
62 var key = keys[i];
63
64 if (key === '_owner' && a.$$typeof) {
65 // React-specific: avoid traversing React elements' _owner.
66 // _owner contains circular references
67 // and is not needed when comparing the actual elements (and not their owners)
68 continue;
69 }
70
71 if (!equal(a[key], b[key])) return false;
72 }
73
74 return true;
75 }
76
77 // true if both NaN, false otherwise
78 return a!==a && b!==b;
79};
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