Issue 5685 - Pass ESLint

lib/io.js

 /*
  * This file is part of Adblock Plus <https://adblockplus.org/>,
  * Copyright (C) 2006-present eyeo GmbH
  *
  * Adblock Plus is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License version 3 as
  * published by the Free Software Foundation.
  *
  * Adblock Plus is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  * GNU General Public License for more details.
  *
  * You should have received a copy of the GNU General Public License
  * along with Adblock Plus.  If not, see <http://www.gnu.org/licenses/>.
  */
 
+"use strict";
+
 function readFileAsync(fileName)
 {
   return new Promise((resolve, reject) =>
   {
     _fileSystem.read(fileName, (result) =>
     {
       if (result.error)
         return reject(result.error);
       resolve(result);
     });
   });
-};
+}
 
 function writeFileAsync(fileName, content)
 {
   return new Promise((resolve, reject) =>
   {
     _fileSystem.write(fileName, content, (error) =>
     {
       if (error)
         return reject(error);
       resolve();
     });
   });
-};
+}
 
 exports.IO =
 {
   lineBreak: "\n",
 
   readFromFile(fileName, listener)
   {
     return new Promise((resolve, reject) =>
     {
-      _fileSystem.readFromFile(fileName, listener, (error) => {
+      _fileSystem.readFromFile(fileName, listener, (error) =>
+      {
         if (error)
           return reject(error);
         resolve();
       });
     });
   },
 
   writeToFile(fileName, generator)
   {
     let content = Array.from(generator).join(this.lineBreak) + this.lineBreak;
     return writeFileAsync(fileName, content);
   },
 
   copyFile(fromFileName, toFileName)
   {
-    return readFileAsync(fromFileName).then(content => writeFileAsync(toFileName, content));
+    return readFileAsync(fromFileName).then(
+      content => writeFileAsync(toFileName, content));
   },
 
   renameFile(fromFileName, newNameFile)
   {
     return new Promise((resolve, reject) =>
     {
       _fileSystem.move(fromFileName, newNameFile, (error) =>
       {
         if (error)
           return reject(error);
@@ skipping 21 matching lines @@
     {
       _fileSystem.stat(fileName, (result) =>
       {
         if (result.error)
           return reject(result.error);
         resolve(result);
       });
     });
   }
 };