Alternative or polyfill for Array.from on the Internet Explorer
<p>I have a problem with my Angular App on the Internet Explorer. It runs everywhere without a problem (Chrome, Mozilla, Edge), but <em><strong>NOT</strong></em> on the IE.</p>
<p>I have analyzed with the Developer Explorer where the error is and it returned that the error occurs on the following line:</p>
<p><code>myDataSet[index - 1].data = Array.from(tmp);</code></p>
<p>Where this is the following error message I am getting:</p>
<blockquote>
<p>Object does not support property or method from at Anonymous function....(etc.)</p>
</blockquote>
<p>What I am doing there is that I have a <code>Set()</code> named <code>tmp</code> which contains the following data:</p>
<p><a href="https://i.stack.imgur.com/gj5da.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/gj5da.png" alt="enter image description here" /></a></p>
<p>Afterwards I am simply creating a simple array object from this <code>Set</code>.</p>
<p>How can I solve this problem?</p>
<p><strong>EDIT</strong></p>
<p>Based on the recommendations I have added the following code to my App:</p>
<pre><code>if (!Array.from) {
  Array.from = (function () {
    var toStr = Object.prototype.toString;
    var isCallable = function (fn) {
      return typeof fn === 'function' || toStr.call(fn) === '[object Function]';
    };
    var toInteger = function (value) {
      var number = Number(value);
      if (isNaN(number)) { return 0; }
      if (number === 0 || !isFinite(number)) { return number; }
      return (number &gt; 0 ? 1 : -1) * Math.floor(Math.abs(number));
    };
    var maxSafeInteger = Math.pow(2, 53) - 1;
    var toLength = function (value) {
      var len = toInteger(value);
      return Math.min(Math.max(len, 0), maxSafeInteger);
    };

    // The length property of the from method is 1.
    return function from(arrayLike/*, mapFn, thisArg */) {
      // 1. Let C be the this value.
      var C = this;

      // 2. Let items be ToObject(arrayLike).
      var items = Object(arrayLike);

      // 3. ReturnIfAbrupt(items).
      if (arrayLike == null) {
        throw new TypeError(&quot;Array.from requires an array-like object - not null or undefined&quot;);
      }

      // 4. If mapfn is undefined, then let mapping be false.
      var mapFn = arguments.length &gt; 1 ? arguments[1] : void undefined;
      var T;
      if (typeof mapFn !== 'undefined') {
        // 5. else
        // 5. a If IsCallable(mapfn) is false, throw a TypeError exception.
        if (!isCallable(mapFn)) {
          throw new TypeError('Array.from: when provided, the second argument must be a function');
        }

        // 5. b. If thisArg was supplied, let T be thisArg; else let T be undefined.
        if (arguments.length &gt; 2) {
          T = arguments[2];
        }
      }

      // 10. Let lenValue be Get(items, &quot;length&quot;).
      // 11. Let len be ToLength(lenValue).
      var len = toLength(items.length);

      // 13. If IsConstructor(C) is true, then
      // 13. a. Let A be the result of calling the [[Construct]] internal method of C with an argument list containing the single item len.
      // 14. a. Else, Let A be ArrayCreate(len).
      var A = isCallable(C) ? Object(new C(len)) : new Array(len);

      // 16. Let k be 0.
      var k = 0;
      // 17. Repeat, while k &lt; len… (also steps a - h)
      var kValue;
      while (k &lt; len) {
        kValue = items[k];
        if (mapFn) {
          A[k] = typeof T === 'undefined' ? mapFn(kValue, k) : mapFn.call(T, kValue, k);
        } else {
          A[k] = kValue;
        }
        k += 1;
      }
      // 18. Let putStatus be Put(A, &quot;length&quot;, len, true).
      A.length = len;
      // 20. Return A.
      return A;
    };
  }());
}
</code></pre>