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diff --git a/MLEB/Translate/ffs/AmdFFS.php b/MLEB/Translate/ffs/AmdFFS.php
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+++ b/MLEB/Translate/ffs/AmdFFS.php
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+<?php
+/**
+ * Support for the AMD i18n message file format (used by require.js and Dojo). See:
+ * http://requirejs.org/docs/api.html#i18n
+ *
+ * A limitation is that it only accepts json compatible structures inside the define
+ * wrapper function. For example the following example is not ok since there are no
+ * quotation marks around the keys:
+ * define({
+ *   key1: "somevalue",
+ *   key2: "anothervalue"
+ * });
+ *
+ * Instead it should look like:
+ * define({
+ *   "key1": "somevalue",
+ *   "key2": "anothervalue"
+ * });
+ *
+ * It also supports the the top-level bundle with a root construction and language indicators.
+ * The following example will give the same messages as above:
+ * define({
+ *   "root": {
+ *      "key1": "somevalue",
+ *      "key2": "anothervalue"
+ *   },
+ *   "sv": true
+ * });
+ *
+ * Note that it does not support exporting with the root construction, there is only support
+ * for reading it. However, this is not a serious limitation as Translatewiki doesn't export
+ * the base language.
+ *
+ * @file
+ * @author Matthias Palmér
+ * @copyright Copyright © 2011-2015, MetaSolutions AB
+ * @license GPL-2.0+
+ */
+
+/**
+ * AmdFFS implements a message format where messages are encoded
+ * as key-value pairs in JSON objects wrapped in a define call.
+ *
+ * @ingroup FFS
+ * @since 2015.02
+ */
+class AmdFFS extends SimpleFFS {
+
+	/**
+	 * @param string $data
+	 * @return bool
+	 */
+	public static function isValid( $data ) {
+		$data = AmdFFS::extractMessagePart( $data );
+		return is_array( FormatJSON::decode( $data, /*as array*/true ) );
+	}
+
+	public function getFileExtensions() {
+		return array( '.js' );
+	}
+
+	/**
+	 * @param array $data
+	 * @return array Parsed data.
+	 */
+	public function readFromVariable( $data ) {
+		$authors = AmdFFS::extractAuthors( $data );
+		$data = AmdFFS::extractMessagePart( $data );
+		$messages = (array) FormatJSON::decode( $data, /*as array*/true );
+		$metadata = array();
+
+		// Take care of regular language bundles, as well as the root bundle.
+		if ( isset( $messages['root'] ) ) {
+			$messages = $this->group->getMangler()->mangle( $messages['root'] );
+		} else {
+			$messages = $this->group->getMangler()->mangle( $messages );
+		}
+
+		return array(
+			'MESSAGES' => $messages,
+			'AUTHORS' => $authors,
+			'METADATA' => $metadata,
+		);
+	}
+
+	/**
+	 * @param MessageCollection $collection
+	 * @return string
+	 */
+	protected function writeReal( MessageCollection $collection ) {
+		$messages = array();
+		$template = $this->read( $collection->getLanguage() );
+
+		$mangler = $this->group->getMangler();
+
+		/// @var $m ThinMessage
+		foreach ( $collection as $key => $m ) {
+			$value = $m->translation();
+			if ( $value === null ) {
+				continue;
+			}
+
+			if ( $m->hasTag( 'fuzzy' ) ) {
+				$value = str_replace( TRANSLATE_FUZZY, '', $value );
+			}
+
+			$key = $mangler->unmangle( $key );
+			$messages[$key] = $value;
+		}
+
+		// Do not create empty files
+		if ( !count( $messages ) ) {
+			return '';
+		}
+		$header = $this->header( $collection->code, $collection->getAuthors() );
+		return $header . FormatJSON::encode( $messages, "\t", FormatJson::UTF8_OK ) . ");\n";
+	}
+
+	/**
+	 * @param string $data
+	 * @return string of JSON
+	 */
+	private static function extractMessagePart( $data ) {
+		// Find the start and end of the data section (enclosed in the define function call).
+		$dataStart = strpos( $data, 'define(' ) + 6;
+		$dataEnd = strrpos( $data, ')' );
+
+		// Strip everything outside of the data section.
+		return substr( $data, $dataStart + 1, $dataEnd - $dataStart - 1 );
+	}
+
+	/**
+	 * @param string $data
+	 * @return array
+	 */
+	private static function extractAuthors( $data ) {
+		preg_match_all( '~\n \*  - (.+)~', $data, $result );
+		return $result[1];
+	}
+
+	/**
+	 * @param string $code
+	 * @param array $authors
+	 * @return string
+	 */
+	private function header( $code, $authors ) {
+		global $wgSitename;
+
+		$name = TranslateUtils::getLanguageName( $code );
+		$authorsList = $this->authorsList( $authors );
+
+		return <<<EOT
+/**
+ * Messages for $name
+ * Exported from $wgSitename
+ *
+{$authorsList}
+ */
+define(
+EOT;
+	}
+
+	/**
+	 * @param array $authors
+	 * @return string
+	 */
+	private function authorsList( array $authors ) {
+		if ( count( $authors ) === 0 ) {
+			return '';
+		}
+
+		$prefix = " *  - ";
+		$authorList = implode( "\n$prefix", $authors );
+		return " * Translators:\n$prefix$authorList";
+	}
+}