Code coverage report for src/environment.js

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System.register([], function (_export) {
  'use strict';
 
  var hasObjectObserve, hasArrayObserve;
  return {
    setters: [],
    execute: function () {
      hasObjectObserve = (function detectObjectObserve() {
        Iif (typeof Object.observe !== 'function') {
          return false;
        }
 
        var records = [];
 
        function callback(recs) {
          records = recs;
        }
 
        var test = {};
        Object.observe(test, callback);
        test.id = 1;
        test.id = 2;
        delete test.id;
 
        Object.deliverChangeRecords(callback);
        Iif (records.length !== 3) return false;
 
        Iif (records[0].type != 'add' || records[1].type != 'update' || records[2].type != 'delete') {
          return false;
        }
 
        Object.unobserve(test, callback);
 
        return true;
      })();
 
      _export('hasObjectObserve', hasObjectObserve);
 
      hasArrayObserve = (function detectArrayObserve() {
        Iif (typeof Array.observe !== 'function') {
          return false;
        }
 
        var records = [];
 
        function callback(recs) {
          records = recs;
        }
 
        var arr = [];
        Array.observe(arr, callback);
        arr.push(1, 2);
        arr.length = 0;
 
        Object.deliverChangeRecords(callback);
        Iif (records.length !== 2) return false;
 
        Iif (records[0].type != 'splice' || records[1].type != 'splice') {
          return false;
        }
 
        Array.unobserve(arr, callback);
 
        return true;
      })();
 
      _export('hasArrayObserve', hasArrayObserve);
    }
  };
});
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