1 files changed, 119 insertions, 0 deletions
diff --git a/node_modules/es5-ext/array/from/shim.js b/node_modules/es5-ext/array/from/shim.js
new file mode 100644
index 000000000..8928181ef
--- /dev/null
+++ b/node_modules/es5-ext/array/from/shim.js
@@ -0,0 +1,119 @@
+"use strict";
+
+var iteratorSymbol = require("es6-symbol").iterator
+  , isArguments    = require("../../function/is-arguments")
+  , isFunction     = require("../../function/is-function")
+  , toPosInt       = require("../../number/to-pos-integer")
+  , callable       = require("../../object/valid-callable")
+  , validValue     = require("../../object/valid-value")
+  , isValue        = require("../../object/is-value")
+  , isString       = require("../../string/is-string")
+  , isArray        = Array.isArray
+  , call           = Function.prototype.call
+  , desc           = { configurable: true, enumerable: true, writable: true, value: null }
+  , defineProperty = Object.defineProperty;
+
+// eslint-disable-next-line complexity
+module.exports = function (arrayLike /*, mapFn, thisArg*/) {
+	var mapFn = arguments[1]
+	  , thisArg = arguments[2]
+	  , Context
+	  , i
+	  , j
+	  , arr
+	  , length
+	  , code
+	  , iterator
+	  , result
+	  , getIterator
+	  , value;
+
+	arrayLike = Object(validValue(arrayLike));
+
+	if (isValue(mapFn)) callable(mapFn);
+	if (!this || this === Array || !isFunction(this)) {
+		// Result: Plain array
+		if (!mapFn) {
+			if (isArguments(arrayLike)) {
+				// Source: Arguments
+				length = arrayLike.length;
+				if (length !== 1) return Array.apply(null, arrayLike);
+				arr = new Array(1);
+				arr[0] = arrayLike[0];
+				return arr;
+			}
+			if (isArray(arrayLike)) {
+				// Source: Array
+				arr = new Array(length = arrayLike.length);
+				for (i = 0; i < length; ++i) arr[i] = arrayLike[i];
+				return arr;
+			}
+		}
+		arr = [];
+	} else {
+		// Result: Non plain array
+		Context = this;
+	}
+
+	if (!isArray(arrayLike)) {
+		if ((getIterator = arrayLike[iteratorSymbol]) !== undefined) {
+			// Source: Iterator
+			iterator = callable(getIterator).call(arrayLike);
+			if (Context) arr = new Context();
+			result = iterator.next();
+			i = 0;
+			while (!result.done) {
+				value = mapFn ? call.call(mapFn, thisArg, result.value, i) : result.value;
+				if (Context) {
+					desc.value = value;
+					defineProperty(arr, i, desc);
+				} else {
+					arr[i] = value;
+				}
+				result = iterator.next();
+				++i;
+			}
+			length = i;
+		} else if (isString(arrayLike)) {
+			// Source: String
+			length = arrayLike.length;
+			if (Context) arr = new Context();
+			for (i = 0, j = 0; i < length; ++i) {
+				value = arrayLike[i];
+				if (i + 1 < length) {
+					code = value.charCodeAt(0);
+					// eslint-disable-next-line max-depth
+					if (code >= 0xd800 && code <= 0xdbff) value += arrayLike[++i];
+				}
+				value = mapFn ? call.call(mapFn, thisArg, value, j) : value;
+				if (Context) {
+					desc.value = value;
+					defineProperty(arr, j, desc);
+				} else {
+					arr[j] = value;
+				}
+				++j;
+			}
+			length = j;
+		}
+	}
+	if (length === undefined) {
+		// Source: array or array-like
+		length = toPosInt(arrayLike.length);
+		if (Context) arr = new Context(length);
+		for (i = 0; i < length; ++i) {
+			value = mapFn ? call.call(mapFn, thisArg, arrayLike[i], i) : arrayLike[i];
+			if (Context) {
+				desc.value = value;
+				defineProperty(arr, i, desc);
+			} else {
+				arr[i] = value;
+			}
+		}
+	}
+	if (Context) {
+		desc.value = null;
+		arr.length = length;
+	}
+	return arr;
+};