1 files changed, 22 insertions, 0 deletions
diff --git a/resources/src/mediawiki/mediawiki.RegExp.js b/resources/src/mediawiki/mediawiki.RegExp.js
new file mode 100644
index 00000000..1da4ab4c
--- /dev/null
+++ b/resources/src/mediawiki/mediawiki.RegExp.js
@@ -0,0 +1,22 @@
+( function ( mw ) {
+	/**
+	 * @class mw.RegExp
+	 */
+	mw.RegExp = {
+		/**
+		 * Escape string for safe inclusion in regular expression
+		 *
+		 * The following characters are escaped:
+		 *
+		 *     \ { } ( ) | . ? * + - ^ $ [ ]
+		 *
+		 * @since 1.26
+		 * @static
+		 * @param {string} str String to escape
+		 * @return {string} Escaped string
+		 */
+		escape: function ( str ) {
+			return str.replace( /([\\{}()|.?*+\-\^$\[\]])/g, '\\$1' );
+		}
+	};
+}( mediaWiki ) );