FakeRest throws Array.findIndex() error while using it on IE and Edge

[ashwanikumar415]

Included fakeRest via npm in project . But now when the same app runs on IE or Edge throws the below error:
Object doesn't support property or method 'findIndex' File: FakeRest.min.js, Line: 1, Column: 14642
Was this intentional not to support IE ?

[fzaninotto]

No, it's IE's lack of support for modern JS that is intentional ;)

[ashwanikumar415]

Well in that case , only workaround left is to use below polyfill and load it before fakeRest in html

` if (!Array.prototype.findIndex) {
Object.defineProperty(Array.prototype, 'findIndex', {

value: function(predicate) {
  if (this == null) {
    throw new TypeError('"this" is null or not defined');
  }
  var o = Object(this);
  var len = o.length >>> 0;
  if (typeof predicate !== 'function') {
    throw new TypeError('predicate must be a function');
  }
  var thisArg = arguments[1];
  var k = 0;
  while (k < len) {
    var kValue = o[k];
    if (predicate.call(thisArg, kValue, k, o)) {
      return k;
    }
    k++;
  }
  return -1;
}

});
} `

[ashwanikumar415]

@fzaninotto
Is it feasible to add the above-mentioned piece of polyfill in your code? So that fake rest runs everywhere flawlessly? And consumers of fakeRest don't have to bother to add polyfill just to make it work?
The error is thrown from : https://github.com/marmelab/FakeRest/blob/master/src/Collection.js

[fzaninotto]

Of course! Would you like to make a Pull Request?

[ashwanikumar415]

@fzaninotto
sure !!! that'll be great . We install fakeRest via npm in our project