1 files changed, 37 insertions, 0 deletions
diff --git a/node_modules/core-js/library/modules/es6.array.from.js b/node_modules/core-js/library/modules/es6.array.from.js
new file mode 100644
index 00000000..4db38017
--- /dev/null
+++ b/node_modules/core-js/library/modules/es6.array.from.js
@@ -0,0 +1,37 @@
+'use strict';
+var ctx = require('./_ctx');
+var $export = require('./_export');
+var toObject = require('./_to-object');
+var call = require('./_iter-call');
+var isArrayIter = require('./_is-array-iter');
+var toLength = require('./_to-length');
+var createProperty = require('./_create-property');
+var getIterFn = require('./core.get-iterator-method');
+
+$export($export.S + $export.F * !require('./_iter-detect')(function (iter) { Array.from(iter); }), 'Array', {
+  // 22.1.2.1 Array.from(arrayLike, mapfn = undefined, thisArg = undefined)
+  from: function from(arrayLike /* , mapfn = undefined, thisArg = undefined */) {
+    var O = toObject(arrayLike);
+    var C = typeof this == 'function' ? this : Array;
+    var aLen = arguments.length;
+    var mapfn = aLen > 1 ? arguments[1] : undefined;
+    var mapping = mapfn !== undefined;
+    var index = 0;
+    var iterFn = getIterFn(O);
+    var length, result, step, iterator;
+    if (mapping) mapfn = ctx(mapfn, aLen > 2 ? arguments[2] : undefined, 2);
+    // if object isn't iterable or it's array with default iterator - use simple case
+    if (iterFn != undefined && !(C == Array && isArrayIter(iterFn))) {
+      for (iterator = iterFn.call(O), result = new C(); !(step = iterator.next()).done; index++) {
+        createProperty(result, index, mapping ? call(iterator, mapfn, [step.value, index], true) : step.value);
+      }
+    } else {
+      length = toLength(O.length);
+      for (result = new C(length); length > index; index++) {
+        createProperty(result, index, mapping ? mapfn(O[index], index) : O[index]);
+      }
+    }
+    result.length = index;
+    return result;
+  }
+});