Bump to v3.0.0.

string/escapeRegExp.js

@@ -0,0 +1,33 @@
+define(['../internal/baseToString'], function(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;
+  }
+
+  return escapeRegExp;
+});