rxdb/dist/cjs/plugins/utils/utils-object-deep-equal.js

A local-first realtime NoSQL Database for JavaScript applications - https://rxdb.info/

"use strict";

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.deepEqual = deepEqual;
/**
 * Copied from the fast-deep-equal package
 * because it does not support es modules and causes optimization bailouts.
 * TODO use the npm package again when this is merged:
 * @link https://github.com/epoberezkin/fast-deep-equal/pull/105
 */
function deepEqual(a, b) {
  if (a === b) return true;
  if (a && b && typeof a == 'object' && typeof b == 'object') {
    if (a.constructor !== b.constructor) return false;
    var length;
    var i;
    if (Array.isArray(a)) {
      length = a.length;
      if (length !== b.length) return false;
      for (i = length; i-- !== 0;) if (!deepEqual(a[i], b[i])) return false;
      return true;
    }
    if (a.constructor === RegExp) return a.source === b.source && a.flags === b.flags;
    if (a.valueOf !== Object.prototype.valueOf) return a.valueOf() === b.valueOf();
    if (a.toString !== Object.prototype.toString) return a.toString() === b.toString();
    var keys = Object.keys(a);
    length = keys.length;
    if (length !== Object.keys(b).length) return false;
    for (i = length; i-- !== 0;) if (!Object.prototype.hasOwnProperty.call(b, keys[i])) return false;
    for (i = length; i-- !== 0;) {
      var key = keys[i];
      if (!deepEqual(a[key], b[key])) return false;
    }
    return true;
  }

  // true if both NaN, false otherwise
  return a !== a && b !== b;
}
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