Bump to v4.0.0.

toArray.js

@@ -0,0 +1,57 @@
+import _Symbol from './internal/_Symbol';
+import copyArray from './internal/copyArray';
+import getTag from './internal/getTag';
+import isArrayLike from './isArrayLike';
+import isString from './isString';
+import iteratorToArray from './internal/iteratorToArray';
+import mapToArray from './internal/mapToArray';
+import setToArray from './internal/setToArray';
+import stringToArray from './internal/stringToArray';
+import values from './values';
+
+/** `Object#toString` result references. */
+var mapTag = '[object Map]',
+    setTag = '[object Set]';
+
+/** Built-in value references. */
+var iteratorSymbol = typeof (iteratorSymbol = _Symbol && _Symbol.iterator) == 'symbol' ? iteratorSymbol : undefined;
+
+/**
+ * Converts `value` to an array.
+ *
+ * @static
+ * @memberOf _
+ * @category Lang
+ * @param {*} value The value to convert.
+ * @returns {Array} Returns the converted array.
+ * @example
+ *
+ * _.toArray({ 'a': 1, 'b': 2 });
+ * // => [1, 2]
+ *
+ * _.toArray('abc');
+ * // => ['a', 'b', 'c']
+ *
+ * _.toArray(1);
+ * // => []
+ *
+ * _.toArray(null);
+ * // => []
+ */
+function toArray(value) {
+  if (!value) {
+    return [];
+  }
+  if (isArrayLike(value)) {
+    return isString(value) ? stringToArray(value) : copyArray(value);
+  }
+  if (iteratorSymbol && value[iteratorSymbol]) {
+    return iteratorToArray(value[iteratorSymbol]());
+  }
+  var tag = getTag(value),
+      func = tag == mapTag ? mapToArray : (tag == setTag ? setToArray : values);
+
+  return func(value);
+}
+
+export default toArray;