| Index: lib/filterComposer.js | 
| diff --git a/lib/filterComposer.js b/lib/filterComposer.js | 
| index 10390f9f3be7462ec52da3639872fa1df757b2a8..cd33a58b804e9a5360623721f8e37fd3f01fa206 100644 | 
| --- a/lib/filterComposer.js | 
| +++ b/lib/filterComposer.js | 
| @@ -35,7 +35,7 @@ let readyPages = new ext.PageMap(); | 
| * @param {Page} page | 
| * @return {boolean} | 
| */ | 
| -exports.isPageReady = function(page) | 
| +exports.isPageReady = page => | 
| { | 
| return readyPages.has(page); | 
| }; | 
| @@ -66,7 +66,7 @@ let escapeCSS = | 
| * @return {string} | 
| * @static | 
| */ | 
| -exports.escapeCSS = function(s) | 
| +exports.escapeCSS = s => | 
| { | 
| return s.replace(/^[\d\-]|[^\w\-\u0080-\uFFFF]/g, escapeChar); | 
| }; | 
| @@ -79,7 +79,7 @@ let quoteCSS = | 
| * @return {string} | 
| * @static | 
| */ | 
| -exports.quoteCSS = function(value) | 
| +exports.quoteCSS = value => | 
| { | 
| return '"' + value.replace(/["\\\{\}\x00-\x1F\x7F]/g, escapeChar) + '"'; | 
| }; | 
| @@ -156,7 +156,7 @@ function composeFilters(details) | 
| let contextMenuItem = { | 
| title: ext.i18n.getMessage("block_element"), | 
| contexts: ["image", "video", "audio"], | 
| -  onclick: page => | 
| +  onclick(page) | 
| { | 
| page.sendMessage({type: "composer.content.contextMenuClicked"}); | 
| } | 
|  |