Bump to v3.0.0.

string/escapeRegExp.js

@@ -0,0 +1,32 @@
+var baseToString = require('../internal/baseToString');
+
+/**
+ * Used to match `RegExp` special characters.
+ * See this [article on `RegExp` characters](http://www.regular-expressions.info/characters.html#special)
+ * for more details.
+ */
+var reRegExpChars = /[.*+?^${}()|[\]\/\\]/g,
+    reHasRegExpChars = RegExp(reRegExpChars.source);
+
+/**
+ * Escapes the `RegExp` special characters "\", "^", "$", ".", "|", "?", "*",
+ * "+", "(", ")", "[", "]", "{" and "}" in `string`.
+ *
+ * @static
+ * @memberOf _
+ * @category String
+ * @param {string} [string=''] The string to escape.
+ * @returns {string} Returns the escaped string.
+ * @example
+ *
+ * _.escapeRegExp('[lodash](https://lodash.com/)');
+ * // => '\[lodash\]\(https://lodash\.com/\)'
+ */
+function escapeRegExp(string) {
+  string = baseToString(string);
+  return (string && reHasRegExpChars.test(string))
+    ? string.replace(reRegExpChars, '\\$&')
+    : string;
+}
+
+module.exports = escapeRegExp;