react-refetch/lib/utils/shallowEqual.js

A simple, declarative, and composable way to fetch data for React components.

"use strict";

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports["default"] = shallowEqual;

function _typeof(obj) { if (typeof Symbol === "function" && typeof Symbol.iterator === "symbol") { _typeof = function _typeof(obj) { return typeof obj; }; } else { _typeof = function _typeof(obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; }; } return _typeof(obj); }

function shallowEqual(objA, objB) {
  if (objA === objB) {
    return true;
  }

  if (_typeof(objA) !== 'object' || _typeof(objB) !== 'object' || objA === null || objB === null) {
    return false;
  }

  var keysA = Object.keys(objA);
  var keysB = Object.keys(objB);

  if (keysA.length !== keysB.length) {
    return false;
  } // Test for A's keys different from B.


  var hasOwn = Object.prototype.hasOwnProperty;

  for (var i = 0; i < keysA.length; i++) {
    if (!hasOwn.call(objB, keysA[i]) || objA[keysA[i]] !== objB[keysA[i]]) {
      return false;
    }
  }

  return true;
}