twitst4tz

twitter statistics web application
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react.js (1451B)


      1 'use strict';
      2 
      3 // do not edit .js files directly - edit src/index.jst
      4 
      5 
      6 
      7 module.exports = function equal(a, b) {
      8   if (a === b) return true;
      9 
     10   if (a && b && typeof a == 'object' && typeof b == 'object') {
     11     if (a.constructor !== b.constructor) return false;
     12 
     13     var length, i, keys;
     14     if (Array.isArray(a)) {
     15       length = a.length;
     16       if (length != b.length) return false;
     17       for (i = length; i-- !== 0;)
     18         if (!equal(a[i], b[i])) return false;
     19       return true;
     20     }
     21 
     22 
     23 
     24     if (a.constructor === RegExp) return a.source === b.source && a.flags === b.flags;
     25     if (a.valueOf !== Object.prototype.valueOf) return a.valueOf() === b.valueOf();
     26     if (a.toString !== Object.prototype.toString) return a.toString() === b.toString();
     27 
     28     keys = Object.keys(a);
     29     length = keys.length;
     30     if (length !== Object.keys(b).length) return false;
     31 
     32     for (i = length; i-- !== 0;)
     33       if (!Object.prototype.hasOwnProperty.call(b, keys[i])) return false;
     34 
     35     for (i = length; i-- !== 0;) {
     36       var key = keys[i];
     37 
     38       if (key === '_owner' && a.$$typeof) {
     39         // React-specific: avoid traversing React elements' _owner.
     40         //  _owner contains circular references
     41         // and is not needed when comparing the actual elements (and not their owners)
     42         continue;
     43       }
     44 
     45       if (!equal(a[key], b[key])) return false;
     46     }
     47 
     48     return true;
     49   }
     50 
     51   // true if both NaN, false otherwise
     52   return a!==a && b!==b;
     53 };