Bump to v4.0.0.

toPath.js

@@ -0,0 +1,34 @@
+var arrayMap = require('./internal/arrayMap'),
+    isArray = require('./isArray'),
+    stringToPath = require('./internal/stringToPath');
+
+/**
+ * Converts `value` to a property path array.
+ *
+ * @static
+ * @memberOf _
+ * @category Util
+ * @param {*} value The value to convert.
+ * @returns {Array} Returns the new property path array.
+ * @example
+ *
+ * _.toPath('a.b.c');
+ * // => ['a', 'b', 'c']
+ *
+ * _.toPath('a[0].b.c');
+ * // => ['a', '0', 'b', 'c']
+ *
+ * var path = ['a', 'b', 'c'],
+ *     newPath = _.toPath(path);
+ *
+ * console.log(newPath);
+ * // => ['a', 'b', 'c']
+ *
+ * console.log(path === newPath);
+ * // => false
+ */
+function toPath(value) {
+  return isArray(value) ? arrayMap(value, String) : stringToPath(value);
+}
+
+module.exports = toPath;