From a61ced7e4642ded70fd8e7ef795cf6e8697ddafe Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Maciej=20Go=C5=82aszewski?= <jodator@jodator.net>
Date: Wed, 11 Oct 2017 09:32:27 +0200
Subject: [PATCH 01/11] Enhancement: Use chalk to style console output.

---
 package.json                                  |  1 +
 packages/ckeditor5-dev-tests/bin/test.js      |  4 ++--
 .../lib/tasks/runautomatedtests.js            |  4 ++--
 .../utils/manual-tests/compilehtmlfiles.js    |  6 ++---
 .../lib/utils/manual-tests/removedir.js       |  4 ++--
 .../utils/manual-tests/compilehtmlfiles.js    | 22 +++++++++----------
 packages/ckeditor5-dev-utils/lib/logger.js    |  5 +++--
 packages/ckeditor5-dev-utils/lib/tools.js     |  6 ++---
 8 files changed, 26 insertions(+), 26 deletions(-)

diff --git a/package.json b/package.json
index 919b8c00d..529f66390 100644
--- a/package.json
+++ b/package.json
@@ -3,6 +3,7 @@
   "private": true,
   "devDependencies": {
     "@ckeditor/ckeditor5-dev-env": "^5.1.12",
+    "chalk": "^2.1.0",
     "eslint": "^4.8.0",
     "eslint-config-ckeditor5": "^1.0.6",
     "gulp": "^3.9.1",
diff --git a/packages/ckeditor5-dev-tests/bin/test.js b/packages/ckeditor5-dev-tests/bin/test.js
index 30a065fc3..77ebf2d8c 100755
--- a/packages/ckeditor5-dev-tests/bin/test.js
+++ b/packages/ckeditor5-dev-tests/bin/test.js
@@ -7,7 +7,7 @@
 
 'use strict';
 
-const gutil = require( 'gulp-util' );
+const chalk = require( 'chalk' );
 const tests = require( '../lib/index' );
 
 const cwd = process.cwd();
@@ -26,5 +26,5 @@ tests.runAutomatedTests( options )
 		// Mark result of this task as invalid.
 		process.exitCode = 1;
 
-		gutil.log( gutil.colors.red( error ) );
+		console.log( chalk.red( error ) );
 	} );
diff --git a/packages/ckeditor5-dev-tests/lib/tasks/runautomatedtests.js b/packages/ckeditor5-dev-tests/lib/tasks/runautomatedtests.js
index 6ee8e3220..7f20a742d 100644
--- a/packages/ckeditor5-dev-tests/lib/tasks/runautomatedtests.js
+++ b/packages/ckeditor5-dev-tests/lib/tasks/runautomatedtests.js
@@ -10,7 +10,7 @@
 const getKarmaConfig = require( '../utils/automated-tests/getkarmaconfig' );
 const KarmaServer = require( 'karma' ).Server;
 const path = require( 'path' );
-const gutil = require( 'gulp-util' );
+const chalk = require( 'chalk' );
 
 module.exports = function runAutomatedTests( options ) {
 	return new Promise( ( resolve, reject ) => {
@@ -35,7 +35,7 @@ module.exports = function runAutomatedTests( options ) {
 					const { logger } = require( '@ckeditor/ckeditor5-dev-utils' );
 					const log = logger();
 
-					log.info( `Coverage report saved in '${ gutil.colors.cyan( coveragePath ) }'.` );
+					log.info( `Coverage report saved in '${ chalk.cyan( coveragePath ) }'.` );
 				} );
 			} );
 		}
diff --git a/packages/ckeditor5-dev-tests/lib/utils/manual-tests/compilehtmlfiles.js b/packages/ckeditor5-dev-tests/lib/utils/manual-tests/compilehtmlfiles.js
index 897d826d1..8ddfa1e8d 100644
--- a/packages/ckeditor5-dev-tests/lib/utils/manual-tests/compilehtmlfiles.js
+++ b/packages/ckeditor5-dev-tests/lib/utils/manual-tests/compilehtmlfiles.js
@@ -10,7 +10,7 @@
 const path = require( 'path' );
 const fs = require( 'fs-extra' );
 const _ = require( 'lodash' );
-const gutil = require( 'gulp-util' );
+const chalk = require( 'chalk' );
 const commonmark = require( 'commonmark' );
 const combine = require( 'dom-combiner' );
 const chokidar = require( 'chokidar' );
@@ -69,7 +69,7 @@ function compileHtmlFile( buildDir, sourceFilePathBase, viewTemplate ) {
 	const absoluteHtmlFilePath = getRelativeFilePath( sourceHtmlFilePath );
 	const absoluteJSFilePath = getRelativeFilePath( sourceJSFilePath );
 
-	log.info( `Processing '${ gutil.colors.cyan( sourceFilePathBase ) }'...` );
+	log.info( `Processing '${ chalk.cyan( sourceFilePathBase ) }'...` );
 
 	// Compile test instruction (Markdown file).
 	const parsedMarkdownTree = reader.parse( fs.readFileSync( sourceMDFilePath, 'utf-8' ) );
@@ -92,7 +92,7 @@ function compileHtmlFile( buildDir, sourceFilePathBase, viewTemplate ) {
 
 	fs.outputFileSync( outputFilePath, preparedHtml );
 
-	log.info( `Finished writing '${ gutil.colors.cyan( outputFilePath ) }'` );
+	log.info( `Finished writing '${ chalk.cyan( outputFilePath ) }'` );
 }
 
 // Copies all non JS/HTML/MD files to build dir. Their relative paths to JS/HTML files are maintained.
diff --git a/packages/ckeditor5-dev-tests/lib/utils/manual-tests/removedir.js b/packages/ckeditor5-dev-tests/lib/utils/manual-tests/removedir.js
index 679a39fc5..c89aff587 100644
--- a/packages/ckeditor5-dev-tests/lib/utils/manual-tests/removedir.js
+++ b/packages/ckeditor5-dev-tests/lib/utils/manual-tests/removedir.js
@@ -7,7 +7,7 @@
 
 const del = require( 'del' );
 const { logger } = require( '@ckeditor/ckeditor5-dev-utils' );
-const gutil = require( 'gulp-util' );
+const chalk = require( 'chalk' );
 
 /**
  * Removes directory
@@ -18,6 +18,6 @@ const gutil = require( 'gulp-util' );
  */
 module.exports = function removeDir( dir ) {
 	return del( dir ).then( () => {
-		logger().info( `Removed directory '${ gutil.colors.cyan( dir ) }'` );
+		logger().info( `Removed directory '${ chalk.cyan( dir ) }'` );
 	} );
 };
diff --git a/packages/ckeditor5-dev-tests/tests/utils/manual-tests/compilehtmlfiles.js b/packages/ckeditor5-dev-tests/tests/utils/manual-tests/compilehtmlfiles.js
index 934d15f73..f9e712b7f 100644
--- a/packages/ckeditor5-dev-tests/tests/utils/manual-tests/compilehtmlfiles.js
+++ b/packages/ckeditor5-dev-tests/tests/utils/manual-tests/compilehtmlfiles.js
@@ -9,7 +9,6 @@ const mockery = require( 'mockery' );
 const sinon = require( 'sinon' );
 const path = require( 'path' );
 const chokidar = require( 'chokidar' );
-const gutil = require( 'gulp-util' );
 
 const fakeDirname = path.dirname( require.resolve( '../../../lib/utils/manual-tests/compilehtmlfiles' ) );
 
@@ -46,13 +45,11 @@ describe( 'compileHtmlFiles', () => {
 
 			commonmark: {
 				parse: sandbox.spy(),
-				render: sandbox.spy( () => '<h2>Markdown header</h2>' ),
+				render: sandbox.spy( () => '<h2>Markdown header</h2>' )
 			},
 
-			gutil: {
-				colors: sandbox.stub( gutil, 'colors' ).value( {
-					cyan: text => text
-				} )
+			chalk: {
+				cyan: sandbox.spy( text => text )
 			},
 
 			chokidar: {
@@ -108,7 +105,7 @@ describe( 'compileHtmlFiles', () => {
 
 		patternFiles = {
 			[ path.join( 'manualTestPattern', '*.js' ) ]: [ path.join( 'path', 'to', 'manual', 'file.js' ) ],
-			[ path.join( 'path', 'to', 'manual', '**', '*.!(js|html|md)' ) ]: [ 'static-file.png' ],
+			[ path.join( 'path', 'to', 'manual', '**', '*.!(js|html|md)' ) ]: [ 'static-file.png' ]
 		};
 
 		compileHtmlFiles( 'buildDir', [ path.join( 'manualTestPattern', '*.js' ) ] );
@@ -144,7 +141,7 @@ describe( 'compileHtmlFiles', () => {
 
 		patternFiles = {
 			[ path.join( 'manualTestPattern', '*.js' ) ]: [ path.join( 'path', 'to', 'manual', 'file.abc.js' ) ],
-			[ path.join( 'path', 'to', 'manual', '**', '*.!(js|html|md)' ) ]: [],
+			[ path.join( 'path', 'to', 'manual', '**', '*.!(js|html|md)' ) ]: []
 		};
 
 		compileHtmlFiles( 'buildDir', [ path.join( 'manualTestPattern', '*.js' ) ] );
@@ -175,7 +172,7 @@ describe( 'compileHtmlFiles', () => {
 			[ path.join( 'manualTestPattern', '*.js' ) ]: [ path.join( 'path', 'to', 'manual', 'file.js' ) ],
 			[ path.join( 'anotherPattern', '*.js' ) ]: [ path.join( 'path', 'to', 'another', 'manual', 'file.js' ) ],
 			[ path.join( 'path', 'to', 'manual', '**', '*.!(js|html|md)' ) ]: [ 'static-file.png' ],
-			[ path.join( 'path', 'to', 'another', 'manual', '**', '*.!(js|html|md)' ) ]: [],
+			[ path.join( 'path', 'to', 'another', 'manual', '**', '*.!(js|html|md)' ) ]: []
 		};
 
 		compileHtmlFiles( 'buildDir', [
@@ -205,7 +202,7 @@ describe( 'compileHtmlFiles', () => {
 		patternFiles = {
 			[ path.join( 'manualTestPattern', '*.js' ) ]: [ path.join( 'path', 'to', 'manual', 'file.js' ) ],
 			[ path.join( 'anotherPattern', '*.js' ) ]: [ path.join( 'path', 'to', 'another', 'file.js' ) ],
-			[ path.join( 'path', 'to', 'manual', '**', '*.!(js|html|md)' ) ]: [ 'static-file.png' ],
+			[ path.join( 'path', 'to', 'manual', '**', '*.!(js|html|md)' ) ]: [ 'static-file.png' ]
 		};
 
 		compileHtmlFiles( 'buildDir', [
@@ -229,7 +226,7 @@ describe( 'compileHtmlFiles', () => {
 		patternFiles = {
 			[ path.join( 'manualTestPattern', '*.js' ) ]: [ path.join( 'path', 'to', 'manual', 'file.js' ) ],
 			// Glob pattern has problem with file names containing dots.
-			[ path.join( 'path', 'to', 'manual', '**', '*.!(js|html|md)' ) ]: [ 'some.file.md' ],
+			[ path.join( 'path', 'to', 'manual', '**', '*.!(js|html|md)' ) ]: [ 'some.file.md' ]
 		};
 
 		compileHtmlFiles( 'buildDir', [ path.join( 'manualTestPattern', '*.js' ) ] );
@@ -244,7 +241,8 @@ describe( 'compileHtmlFiles', () => {
 				'<div>template html content</div>',
 				'<div class="manual-test-sidebar"><h2>Markdown header</h2></div>',
 				'<div>html file content</div>',
-				`<body class="manual-test-container"><script src="${ path.sep + path.join( 'path', 'to', 'manual', 'file.js' ) }"></script></body>`
+				`<body class="manual-test-container"><script src="${ path.sep +
+				path.join( 'path', 'to', 'manual', 'file.js' ) }"></script></body>`
 			].join( '\n' )
 		);
 		/* eslint-enable max-len */
diff --git a/packages/ckeditor5-dev-utils/lib/logger.js b/packages/ckeditor5-dev-utils/lib/logger.js
index 0028ad0c4..f3022aac4 100644
--- a/packages/ckeditor5-dev-utils/lib/logger.js
+++ b/packages/ckeditor5-dev-utils/lib/logger.js
@@ -6,6 +6,7 @@
 'use strict';
 
 const gutil = require( 'gulp-util' );
+const chalk = require( 'chalk' );
 const levels = new Map();
 
 // Displays everything.
@@ -71,7 +72,7 @@ module.exports = ( moduleVerbosity = 'info' ) => {
 		 * @param {Boolean} [options.raw=false] Whether to display non-modified message.
 		 */
 		warning( message, options = { raw: false } ) {
-			this._log( 'warning', gutil.colors.yellow( message ), options );
+			this._log( 'warning', chalk.yellow( message ), options );
 		},
 
 		/**
@@ -82,7 +83,7 @@ module.exports = ( moduleVerbosity = 'info' ) => {
 		 * @param {Boolean} [options.raw=false] Whether to display non-modified message.
 		 */
 		error( message, options = { raw: false } ) {
-			this._log( 'error', gutil.colors.red( message ), options );
+			this._log( 'error', chalk.red( message ), options );
 		},
 
 		/**
diff --git a/packages/ckeditor5-dev-utils/lib/tools.js b/packages/ckeditor5-dev-utils/lib/tools.js
index 529e17d12..1b9d1c986 100644
--- a/packages/ckeditor5-dev-utils/lib/tools.js
+++ b/packages/ckeditor5-dev-utils/lib/tools.js
@@ -5,7 +5,7 @@
 
 'use strict';
 
-const gutil = require( 'gulp-util' );
+const chalk = require( 'chalk' );
 const path = require( 'path' );
 const fs = require( 'fs-extra' );
 
@@ -28,7 +28,7 @@ module.exports = {
 
 		const ret = sh.exec( command );
 		const logOptions = { raw: true };
-		const grey = gutil.colors.grey;
+		const grey = chalk.grey;
 
 		if ( ret.code ) {
 			if ( ret.stdout ) {
@@ -335,7 +335,7 @@ module.exports = {
 				const log = require( './logger' )( options.verbosity );
 
 				paths.forEach( p => {
-					log.info( `Deleted file '${ gutil.colors.cyan( p ) }'.` );
+					log.info( `Deleted file '${ chalk.cyan( p ) }'.` );
 				} );
 			} );
 	}

From d2807fbd50b5b6be4620c129a01150e597831a00 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Maciej=20Go=C5=82aszewski?= <jodator@jodator.net>
Date: Wed, 11 Oct 2017 10:35:14 +0200
Subject: [PATCH 02/11] Internal: Remove gulp-utils dependency from logger.

---
 .../manual-tests/webpacknotifierplugin.js     |   4 +-
 packages/ckeditor5-dev-tests/package.json     |   1 -
 .../tests/utils/manual-tests/removedir.js     |   6 +-
 packages/ckeditor5-dev-utils/lib/logger.js    |  29 ++---
 packages/ckeditor5-dev-utils/lib/tools.js     |  10 +-
 packages/ckeditor5-dev-utils/package.json     |   1 -
 packages/ckeditor5-dev-utils/tests/logger.js  | 110 +++++-------------
 packages/ckeditor5-dev-utils/tests/tools.js   |   4 -
 8 files changed, 44 insertions(+), 121 deletions(-)

diff --git a/packages/ckeditor5-dev-tests/lib/utils/manual-tests/webpacknotifierplugin.js b/packages/ckeditor5-dev-tests/lib/utils/manual-tests/webpacknotifierplugin.js
index 2da95af72..a90dcb4fa 100644
--- a/packages/ckeditor5-dev-tests/lib/utils/manual-tests/webpacknotifierplugin.js
+++ b/packages/ckeditor5-dev-tests/lib/utils/manual-tests/webpacknotifierplugin.js
@@ -29,13 +29,13 @@ module.exports = class WebpackNotifierPlugin {
 		compiler.plugin( 'done', stats => {
 			if ( stats.compilation.errors.length ) {
 				for ( const item of stats.compilation.errors ) {
-					this.log.error( item.message, { raw: true } );
+					this.log.error( item.message );
 				}
 			}
 
 			if ( stats.compilation.warnings.length ) {
 				for ( const item of stats.compilation.warnings ) {
-					this.log.warning( item.message, { raw: true } );
+					this.log.warning( item.message );
 				}
 			}
 
diff --git a/packages/ckeditor5-dev-tests/package.json b/packages/ckeditor5-dev-tests/package.json
index 670c8aaad..c3496925d 100644
--- a/packages/ckeditor5-dev-tests/package.json
+++ b/packages/ckeditor5-dev-tests/package.json
@@ -18,7 +18,6 @@
     "dom-combiner": "^0.1.2",
     "fs-extra": "^4.0.2",
     "glob": "^7.1.2",
-    "gulp-util": "^3.0.8",
     "istanbul-instrumenter-loader": "^3.0.0",
     "karma": "^1.7.1",
     "karma-chai": "^0.1.0",
diff --git a/packages/ckeditor5-dev-tests/tests/utils/manual-tests/removedir.js b/packages/ckeditor5-dev-tests/tests/utils/manual-tests/removedir.js
index 9549825ae..62762392d 100644
--- a/packages/ckeditor5-dev-tests/tests/utils/manual-tests/removedir.js
+++ b/packages/ckeditor5-dev-tests/tests/utils/manual-tests/removedir.js
@@ -34,10 +34,8 @@ describe( 'removeDir', () => {
 			} );
 		} );
 
-		mockery.registerMock( 'gulp-util', {
-			colors: {
-				cyan: message => `\u001b[36m${ message }\u001b[39m`
-			}
+		mockery.registerMock( 'chalk', {
+			cyan: message => `\u001b[36m${ message }\u001b[39m`
 		} );
 
 		removeDir = require( '../../../lib/utils/manual-tests/removedir' );
diff --git a/packages/ckeditor5-dev-utils/lib/logger.js b/packages/ckeditor5-dev-utils/lib/logger.js
index f3022aac4..2c1dfa35c 100644
--- a/packages/ckeditor5-dev-utils/lib/logger.js
+++ b/packages/ckeditor5-dev-utils/lib/logger.js
@@ -5,7 +5,6 @@
 
 'use strict';
 
-const gutil = require( 'gulp-util' );
 const chalk = require( 'chalk' );
 const levels = new Map();
 
@@ -57,52 +56,40 @@ module.exports = ( moduleVerbosity = 'info' ) => {
 		 * Displays a message when verbosity level is equal to 'info'.
 		 *
 		 * @param {String} message Message to log.
-		 * @param {Object} options
-		 * @param {Boolean} options.raw Whether to display non-modified message.
 		 */
-		info( message, options = { raw: false } ) {
-			this._log( 'info', message, options );
+		info( message ) {
+			this._log( 'info', message );
 		},
 
 		/**
 		 * Displays a warning message when verbosity level is equal to 'info' or 'warning'.
 		 *
 		 * @param {String} message Message to log.
-		 * @param {Object} options
-		 * @param {Boolean} [options.raw=false] Whether to display non-modified message.
 		 */
-		warning( message, options = { raw: false } ) {
-			this._log( 'warning', chalk.yellow( message ), options );
+		warning( message ) {
+			this._log( 'warning', chalk.yellow( message ) );
 		},
 
 		/**
 		 * Displays an error message.
 		 *
 		 * @param {String} message Message to log.
-		 * @param {Object} options
-		 * @param {Boolean} [options.raw=false] Whether to display non-modified message.
 		 */
-		error( message, options = { raw: false } ) {
-			this._log( 'error', chalk.red( message ), options );
+		error( message ) {
+			this._log( 'error', chalk.red( message ) );
 		},
 
 		/**
 		 * @private
 		 * @param {String} messageVerbosity Verbosity of particular message.
 		 * @param {String} message Message to log.
-		 * @param {Object} options
-		 * @param {Boolean} [options.raw=false] Whether to display non-modified message.
 		 */
-		_log( messageVerbosity, message, options ) {
+		_log( messageVerbosity, message ) {
 			if ( !levels.get( messageVerbosity ).has( moduleVerbosity ) ) {
 				return;
 			}
 
-			if ( options.raw ) {
-				console.log( message );
-			} else {
-				gutil.log( message );
-			}
+			console.log( message );
 		}
 	};
 };
diff --git a/packages/ckeditor5-dev-utils/lib/tools.js b/packages/ckeditor5-dev-utils/lib/tools.js
index 1b9d1c986..14fa918ad 100644
--- a/packages/ckeditor5-dev-utils/lib/tools.js
+++ b/packages/ckeditor5-dev-utils/lib/tools.js
@@ -27,27 +27,27 @@ module.exports = {
 		sh.config.silent = true;
 
 		const ret = sh.exec( command );
-		const logOptions = { raw: true };
+
 		const grey = chalk.grey;
 
 		if ( ret.code ) {
 			if ( ret.stdout ) {
-				log.error( grey( ret.stdout ), logOptions );
+				log.error( grey( ret.stdout ) );
 			}
 
 			if ( ret.stderr ) {
-				log.error( grey( ret.stderr ), logOptions );
+				log.error( grey( ret.stderr ) );
 			}
 
 			throw new Error( `Error while executing ${ command }: ${ ret.stderr }` );
 		}
 
 		if ( ret.stdout ) {
-			log.info( grey( ret.stdout ), logOptions );
+			log.info( grey( ret.stdout ) );
 		}
 
 		if ( ret.stderr ) {
-			log.info( grey( ret.stderr ), logOptions );
+			log.info( grey( ret.stderr ) );
 		}
 
 		return ret.stdout;
diff --git a/packages/ckeditor5-dev-utils/package.json b/packages/ckeditor5-dev-utils/package.json
index d6a9309df..cf8ae5ab3 100644
--- a/packages/ckeditor5-dev-utils/package.json
+++ b/packages/ckeditor5-dev-utils/package.json
@@ -9,7 +9,6 @@
     "del": "^3.0.0",
     "escodegen": "git://github.com/ma2ciek/escodegen.git",
     "fs-extra": "^4.0.2",
-    "gulp-util": "^3.0.8",
     "javascript-stringify": "^1.6.0",
     "pofile": "^1.0.9",
     "shelljs": "^0.7.8",
diff --git a/packages/ckeditor5-dev-utils/tests/logger.js b/packages/ckeditor5-dev-utils/tests/logger.js
index 56f011381..50526ce88 100644
--- a/packages/ckeditor5-dev-utils/tests/logger.js
+++ b/packages/ckeditor5-dev-utils/tests/logger.js
@@ -8,7 +8,6 @@
 const sinon = require( 'sinon' );
 const chai = require( 'chai' );
 const expect = chai.expect;
-const gutil = require( 'gulp-util' );
 const logger = require( '../lib/logger' );
 
 describe( 'logger', () => {
@@ -32,65 +31,41 @@ describe( 'logger', () => {
 			log = logger( 'info' );
 		} );
 
-		describe( 'loggger.info()', () => {
+		describe( 'logger.info()', () => {
 			it( 'should log a message', () => {
-				const gutilLog = sandbox.stub( gutil, 'log' );
-
-				log.info( logMessage );
-
-				expect( gutilLog.calledOnce ).to.equal( true );
-				expect( gutilLog.firstCall.args[ 0 ] ).to.equal( logMessage );
-			} );
-
-			it( 'should log a non-modified message', () => {
 				const consoleLog = sandbox.stub( console, 'log' );
 
-				log.info( logMessage, { raw: true } );
+				log.info( logMessage );
 
 				expect( consoleLog.calledOnce ).to.equal( true );
 				expect( consoleLog.firstCall.args[ 0 ] ).to.equal( logMessage );
+
 				consoleLog.restore();
 			} );
 		} );
 
-		describe( 'loggger.warning()', () => {
+		describe( 'logger.warning()', () => {
 			it( 'should log a message', () => {
-				const gutilLog = sandbox.stub( gutil, 'log' );
-
-				log.warning( logMessage );
-
-				expect( gutilLog.calledOnce ).to.equal( true );
-				expect( gutilLog.firstCall.args[ 0 ] ).to.match( new RegExp( logMessage ) );
-			} );
-
-			it( 'should log a non-modified message', () => {
 				const consoleLog = sandbox.stub( console, 'log' );
 
-				log.warning( logMessage, { raw: true } );
+				log.warning( logMessage );
 
 				expect( consoleLog.calledOnce ).to.equal( true );
 				expect( consoleLog.firstCall.args[ 0 ] ).to.match( new RegExp( logMessage ) );
+
 				consoleLog.restore();
 			} );
 		} );
 
-		describe( 'loggger.error()', () => {
+		describe( 'logger.error()', () => {
 			it( 'should log a message', () => {
-				const gutilLog = sandbox.stub( gutil, 'log' );
-
-				log.error( logMessage );
-
-				expect( gutilLog.calledOnce ).to.equal( true );
-				expect( gutilLog.firstCall.args[ 0 ] ).to.match( new RegExp( logMessage ) );
-			} );
-
-			it( 'should log a non-modified message', () => {
 				const consoleLog = sandbox.stub( console, 'log' );
 
-				log.error( logMessage, { raw: true } );
+				log.error( logMessage );
 
 				expect( consoleLog.calledOnce ).to.equal( true );
 				expect( consoleLog.firstCall.args[ 0 ] ).to.match( new RegExp( logMessage ) );
+
 				consoleLog.restore();
 			} );
 		} );
@@ -101,59 +76,40 @@ describe( 'logger', () => {
 			log = logger( 'warning' );
 		} );
 
-		describe( 'loggger.info()', () => {
+		describe( 'logger.info()', () => {
 			it( 'should not log any message', () => {
-				const gutilLog = sandbox.stub( gutil, 'log' );
 				const consoleLog = sandbox.stub( console, 'log' );
 
 				log.info( logMessage );
-				log.info( logMessage, { raw: true } );
 
-				expect( gutilLog.called ).to.equal( false );
 				expect( consoleLog.called ).to.equal( false );
 
 				consoleLog.restore();
 			} );
 		} );
 
-		describe( 'loggger.warning()', () => {
+		describe( 'logger.warning()', () => {
 			it( 'should log a message', () => {
-				const gutilLog = sandbox.stub( gutil, 'log' );
-
-				log.warning( logMessage );
-
-				expect( gutilLog.calledOnce ).to.equal( true );
-				expect( gutilLog.firstCall.args[ 0 ] ).to.match( new RegExp( logMessage ) );
-			} );
-
-			it( 'should log a non-modified message', () => {
 				const consoleLog = sandbox.stub( console, 'log' );
 
-				log.warning( logMessage, { raw: true } );
+				log.warning( logMessage );
 
 				expect( consoleLog.calledOnce ).to.equal( true );
 				expect( consoleLog.firstCall.args[ 0 ] ).to.match( new RegExp( logMessage ) );
+
 				consoleLog.restore();
 			} );
 		} );
 
-		describe( 'loggger.error()', () => {
+		describe( 'logger.error()', () => {
 			it( 'should log a message', () => {
-				const gutilLog = sandbox.stub( gutil, 'log' );
-
-				log.error( logMessage );
-
-				expect( gutilLog.calledOnce ).to.equal( true );
-				expect( gutilLog.firstCall.args[ 0 ] ).to.match( new RegExp( logMessage ) );
-			} );
-
-			it( 'should log a non-modified message', () => {
 				const consoleLog = sandbox.stub( console, 'log' );
 
-				log.error( logMessage, { raw: true } );
+				log.error( logMessage );
 
 				expect( consoleLog.calledOnce ).to.equal( true );
 				expect( consoleLog.firstCall.args[ 0 ] ).to.match( new RegExp( logMessage ) );
+
 				consoleLog.restore();
 			} );
 		} );
@@ -164,53 +120,39 @@ describe( 'logger', () => {
 			log = logger( 'error' );
 		} );
 
-		describe( 'loggger.info()', () => {
+		describe( 'logger.info()', () => {
 			it( 'should not log any message', () => {
-				const gutilLog = sandbox.stub( gutil, 'log' );
 				const consoleLog = sandbox.stub( console, 'log' );
 
 				log.info( logMessage );
-				log.info( logMessage, { raw: true } );
 
-				expect( gutilLog.called ).to.equal( false );
 				expect( consoleLog.called ).to.equal( false );
 
 				consoleLog.restore();
 			} );
 		} );
 
-		describe( 'loggger.warning()', () => {
+		describe( 'logger.warning()', () => {
 			it( 'should not log any message', () => {
-				const gutilLog = sandbox.stub( gutil, 'log' );
 				const consoleLog = sandbox.stub( console, 'log' );
 
 				log.warning( logMessage );
-				log.warning( logMessage, { raw: true } );
 
-				expect( gutilLog.called ).to.equal( false );
 				expect( consoleLog.called ).to.equal( false );
 
 				consoleLog.restore();
 			} );
 		} );
 
-		describe( 'loggger.error()', () => {
+		describe( 'logger.error()', () => {
 			it( 'should log a message', () => {
-				const gutilLog = sandbox.stub( gutil, 'log' );
-
-				log.error( logMessage );
-
-				expect( gutilLog.calledOnce ).to.equal( true );
-				expect( gutilLog.firstCall.args[ 0 ] ).to.match( new RegExp( logMessage ) );
-			} );
-
-			it( 'should log a non-modified message', () => {
 				const consoleLog = sandbox.stub( console, 'log' );
 
-				log.error( logMessage, { raw: true } );
+				log.error( logMessage );
 
 				expect( consoleLog.calledOnce ).to.equal( true );
 				expect( consoleLog.firstCall.args[ 0 ] ).to.match( new RegExp( logMessage ) );
+
 				consoleLog.restore();
 			} );
 		} );
@@ -221,14 +163,16 @@ describe( 'logger', () => {
 			log = logger();
 		} );
 
-		describe( 'loggger.info()', () => {
+		describe( 'logger.info()', () => {
 			it( 'should log a message', () => {
-				const gutilLog = sandbox.stub( gutil, 'log' );
+				const consoleLog = sandbox.stub( console, 'log' );
 
 				log.info( logMessage );
 
-				expect( gutilLog.calledOnce ).to.equal( true );
-				expect( gutilLog.firstCall.args[ 0 ] ).to.equal( logMessage );
+				expect( consoleLog.calledOnce ).to.equal( true );
+				expect( consoleLog.firstCall.args[ 0 ] ).to.equal( logMessage );
+
+				consoleLog.restore();
 			} );
 		} );
 	} );
diff --git a/packages/ckeditor5-dev-utils/tests/tools.js b/packages/ckeditor5-dev-utils/tests/tools.js
index 41601cc59..40da9a2c4 100644
--- a/packages/ckeditor5-dev-utils/tests/tools.js
+++ b/packages/ckeditor5-dev-utils/tests/tools.js
@@ -75,9 +75,7 @@ describe( 'utils', () => {
 				expect( errorSpy.called ).to.equal( false );
 				expect( infoSpy.calledTwice ).to.equal( true );
 				expect( infoSpy.firstCall.args[ 0 ] ).to.match( /out/ );
-				expect( infoSpy.firstCall.args[ 1 ] ).to.deep.equal( { raw: true } );
 				expect( infoSpy.secondCall.args[ 0 ] ).to.match( /err/ );
-				expect( infoSpy.secondCall.args[ 1 ] ).to.deep.equal( { raw: true } );
 			} );
 
 			it( 'should output using log functions when exit code is not equal to 0', () => {
@@ -93,9 +91,7 @@ describe( 'utils', () => {
 				expect( execStub.calledOnce ).to.equal( true );
 				expect( errorSpy.calledTwice ).to.equal( true );
 				expect( errorSpy.firstCall.args[ 0 ] ).to.match( /out/ );
-				expect( errorSpy.firstCall.args[ 1 ] ).to.deep.equal( { raw: true } );
 				expect( errorSpy.secondCall.args[ 0 ] ).to.match( /err/ );
-				expect( errorSpy.secondCall.args[ 1 ] ).to.deep.equal( { raw: true } );
 			} );
 
 			it( 'should not log if no output from executed command', () => {

From 209e05126f202c8ba5b2aae3c5ca91aae59ccf28 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Maciej=20Go=C5=82aszewski?= <jodator@jodator.net>
Date: Wed, 11 Oct 2017 13:17:39 +0200
Subject: [PATCH 03/11] Enhancement: Remove gulp from ckeditor5-dev-tests.

---
 packages/ckeditor5-dev-tests/README.md        | 46 ++++++++++---------
 .../bin/install-dependencies.sh               |  2 +-
 .../ckeditor5-dev-tests/bin/test-manual.js    | 30 ++++++++++++
 packages/ckeditor5-dev-tests/package.json     |  1 +
 4 files changed, 56 insertions(+), 23 deletions(-)
 create mode 100755 packages/ckeditor5-dev-tests/bin/test-manual.js

diff --git a/packages/ckeditor5-dev-tests/README.md b/packages/ckeditor5-dev-tests/README.md
index 3742ed4cd..28f025d22 100644
--- a/packages/ckeditor5-dev-tests/README.md
+++ b/packages/ckeditor5-dev-tests/README.md
@@ -13,22 +13,24 @@ First, you need to install the package:
 npm i --save-dev @ckeditor/ckeditor5-dev-tests
 ```
 
-An example [gulp.js](http://gulpjs.com/) task to test CKEditor 5 packages (used e.g. in https://github.com/ckeditor/ckeditor5) can look like this:
-
-```js
-gulp.task( 'test', () => {
-	return require( '@ckeditor/ckeditor5-dev-tests' )
-		.runAutomatedTests( getTestOptions() );
-} );
-
-gulp.task( 'test:manual', () => {
-	return require( '@ckeditor/ckeditor5-dev-tests' )
-		.runManualTests( getTestOptions() );
-} );
-
-function getTestOptions() {
-	return require( '@ckeditor/ckeditor5-dev-tests' )
-		.parseArguments( process.argv.slice( 2 ) );
+An example npm task to test CKEditor 5 packages (used e.g. in https://github.com/ckeditor/ckeditor5) can look like this:
+
+```json
+{
+  "scripts": {
+      "test": "node ./node_modules/.bin/ckeditor5-dev-tests",
+      "test:manual": "node ./node_modules/.bin/ckeditor5-dev-tests-manual"
+  }
+}
+```
+
+If you encounter problems with big test folders pass `--max_old_space_size=4096` option to node runner: 
+
+```json
+{
+  "scripts": {
+      "test": "node --max_old_space_size=4096 ./node_modules/.bin/ckeditor5-dev-tests"
+  }
 }
 ```
 
@@ -57,32 +59,32 @@ You can also use the bin script for testing a package:
 Test the `ckeditor5-enter` and `ckeditor5-paragraph` packages and generate code coverage report:
 
 ```bash
-$ gulp test -c --files=enter,paragraph
+$ npm t -- -c --files=enter,paragraph
 ```
 
 Run `tests/view/**/*.js` tests from `ckeditor5-engine` and rerun them once any file change (the watch mode):
 
 ```bash
-$ gulp test -w --files=engine/view
+$ npm t -- -w --files=engine/view
 ```
 
 Test specified files in `ckeditor5-basic-styles` on two browsers (Chrome and Firefox) you can use:
 
 ```bash
-$ gulp test --browsers=Chrome,Firefox --files=basic-styles/boldengine.js,basic-styles/italicengine.js
+$ npm t -- --browsers=Chrome,Firefox --files=basic-styles/boldengine.js,basic-styles/italicengine.js
 ```
 
 Test all installed packages:
 
 ```bash
-$ gulp test --files=*
+$ npm t -- --files=*
 ```
 
 Test all installed packages except one (or more):
 
 ```bash
-$ gulp test --files='!(engine)'
-$ gulp test --files='!(engine|ui)'
+$ npm t -- --files='!(engine)'
+$ npm t -- --files='!(engine|ui)'
 ```
 
 ### Rules for converting `--files` option to glob pattern:
diff --git a/packages/ckeditor5-dev-tests/bin/install-dependencies.sh b/packages/ckeditor5-dev-tests/bin/install-dependencies.sh
index df2d49cdb..1b77b17c3 100755
--- a/packages/ckeditor5-dev-tests/bin/install-dependencies.sh
+++ b/packages/ckeditor5-dev-tests/bin/install-dependencies.sh
@@ -2,7 +2,7 @@
 
 set -e
 
-npm install gulp mgit2 lerna@^2.0.0-rc.1 codeclimate-test-reporter eslint-config-ckeditor5
+npm install mgit2 lerna@^2.0.0-rc.1 codeclimate-test-reporter eslint-config-ckeditor5
 
 node_modules/.bin/ckeditor5-dev-tests-create-mgit-json
 node_modules/.bin/ckeditor5-dev-tests-create-lerna-json
diff --git a/packages/ckeditor5-dev-tests/bin/test-manual.js b/packages/ckeditor5-dev-tests/bin/test-manual.js
new file mode 100755
index 000000000..ec4551bb6
--- /dev/null
+++ b/packages/ckeditor5-dev-tests/bin/test-manual.js
@@ -0,0 +1,30 @@
+#!/usr/bin/env node
+
+/**
+ * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.
+ * For licensing, see LICENSE.md.
+ */
+
+'use strict';
+
+const chalk = require( 'chalk' );
+const tests = require( '../lib/index' );
+
+const cwd = process.cwd();
+const options = tests.parseArguments( process.argv.slice( 2 ) );
+
+if ( options.files.length === 0 ) {
+	if ( cwd.endsWith( 'ckeditor5' ) ) {
+		options.files = [ '*' ];
+	} else {
+		options.files = [ '/' ];
+	}
+}
+
+tests.runManualTests( options )
+	.catch( error => {
+		// Mark result of this task as invalid.
+		process.exitCode = 1;
+
+		console.log( chalk.red( error ) );
+	} );
diff --git a/packages/ckeditor5-dev-tests/package.json b/packages/ckeditor5-dev-tests/package.json
index c3496925d..3c1e68d1a 100644
--- a/packages/ckeditor5-dev-tests/package.json
+++ b/packages/ckeditor5-dev-tests/package.json
@@ -50,6 +50,7 @@
   },
   "bin": {
     "ckeditor5-dev-tests": "./bin/test.js",
+    "ckeditor5-dev-tests-manual": "./bin/test-manual.js",
     "ckeditor5-dev-tests-travis": "./bin/test-travis.sh",
     "ckeditor5-dev-tests-create-mgit-json": "./bin/create-mgit-json.js",
     "ckeditor5-dev-tests-create-lerna-json": "./bin/create-lerna-json.js",

From e29b0287cf833f13b3d5f0f4414ab31d1a3afbd7 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Maciej=20Go=C5=82aszewski?= <jodator@jodator.net>
Date: Thu, 12 Oct 2017 13:26:33 +0200
Subject: [PATCH 04/11] Enhancement: Expose translations tasks as binary
 command.

---
 packages/ckeditor5-dev-env/README.md          | 35 +++++++++++
 .../ckeditor5-dev-env/bin/translations.js     | 59 +++++++++++++++++++
 packages/ckeditor5-dev-env/lib/index.js       | 35 -----------
 packages/ckeditor5-dev-env/package.json       |  3 +
 4 files changed, 97 insertions(+), 35 deletions(-)
 create mode 100755 packages/ckeditor5-dev-env/bin/translations.js

diff --git a/packages/ckeditor5-dev-env/README.md b/packages/ckeditor5-dev-env/README.md
index 2b6a8974e..55d7bf898 100644
--- a/packages/ckeditor5-dev-env/README.md
+++ b/packages/ckeditor5-dev-env/README.md
@@ -64,6 +64,41 @@ The process implemented by the tool:
 
 	Notes for the release are taken from the changelog.
 
+## Translation tools
+
+Available tasks:
+- `collect` - Collects translation strings ( from `t()` calls ) and stores them in ckeditor5/build/.transifex directory.
+- `upload` - Uploads translations to the Transifex from collected files.
+- `download` - Downloads translations from the Transifex for each package and language.
+
+### Usage
+
+```
+npm i --save-dev @ckeditor/ckeditor5-dev-env
+```
+
+Then use `ckeditor5-dev-env-translations` command:
+
+```
+# directly from command line:
+node ./node_modules/bin/ckeditor5-dev-env-translations collect
+
+# using npx:
+npx ckeditor5-dev-env-translations collect
+```
+
+Or add to `package.json` scripts:
+
+```
+{
+  "scripts": {
+    "translations:collect": "ckeditor5-dev-env-translations collect",
+    "translations:download": "ckeditor5-dev-env-translations download",
+    "translations:upload": "ckeditor5-dev-env-translations upload"
+  }
+}
+```
+
 ## Changelog
 
 See the [`CHANGELOG.md`](https://github.com/ckeditor/ckeditor5-dev/blob/master/packages/ckeditor5-dev-env/CHANGELOG.md) file.
diff --git a/packages/ckeditor5-dev-env/bin/translations.js b/packages/ckeditor5-dev-env/bin/translations.js
new file mode 100755
index 000000000..9c8211ae9
--- /dev/null
+++ b/packages/ckeditor5-dev-env/bin/translations.js
@@ -0,0 +1,59 @@
+#!/usr/bin/env node
+
+/**
+ * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.
+ * For licensing, see LICENSE.md.
+ */
+
+'use strict';
+
+const chalk = require( 'chalk' );
+
+const task = process.argv[ 2 ];
+
+const tasks = {
+	/**
+	 * Collects translation strings ( from `t()` calls ) and stores them in ckeditor5/build/.transifex directory.
+	 */
+	collect() {
+		const collectTranslations = require( './../lib/translations/collect' );
+
+		collectTranslations();
+	},
+
+	/**
+	 * Uploads translation strings on the Transifex server.
+	 *
+	 * @returns {Promise}
+	 */
+	upload() {
+		const uploadTranslations = require( './../lib/translations/upload' );
+		const getToken = require( './../lib/translations/gettoken' );
+
+		return getToken()
+			.then( credentials => uploadTranslations( credentials ) );
+	},
+
+	/**
+	 * Download translations from the Transifex server.
+	 *
+	 * @returns {Promise}
+	 */
+	download() {
+		const downloadTranslations = require( './../lib/translations/download' );
+		const getToken = require( './../lib/translations/gettoken' );
+
+		return getToken()
+			.then( credentials => downloadTranslations( credentials ) );
+	}
+};
+
+const taskNames = Object.keys( tasks );
+
+if ( !task || !tasks[ task ] ) {
+	console.log( `Please provide valid task name. Available tasks: ${ taskNames.map( task => chalk.bold( task ) ).join( ', ' ) }.` );
+
+	process.exit( 1 );
+}
+
+tasks[ task ]();
diff --git a/packages/ckeditor5-dev-env/lib/index.js b/packages/ckeditor5-dev-env/lib/index.js
index c5275985b..5ca6a0722 100644
--- a/packages/ckeditor5-dev-env/lib/index.js
+++ b/packages/ckeditor5-dev-env/lib/index.js
@@ -25,41 +25,6 @@ const tasks = {
 	generateChangelogForSubRepositories( ...args ) {
 		return require( './release-tools/tasks/generatechangelogforsubrepositories' )( ...args );
 	},
-
-	/**
-	 * Collects translation strings ( from `t()` calls ) and stores them in ckeditor5/build/.transifex directory.
-	 */
-	collectTranslations() {
-		const collectTranslations = require( './translations/collect' );
-
-		collectTranslations();
-	},
-
-	/**
-	 * Uploads translation strings on the Transifex server.
-	 *
-	 * @returns {Promise}
-	 */
-	uploadTranslations() {
-		const uploadTranslations = require( './translations/upload' );
-		const getToken = require( './translations/gettoken' );
-
-		return getToken()
-			.then( credentials => uploadTranslations( credentials ) );
-	},
-
-	/**
-	 * Download translations from the Transifex server.
-	 *
-	 * @returns {Promise}
-	 */
-	downloadTranslations() {
-		const downloadTranslations = require( './translations/download' );
-		const getToken = require( './translations/gettoken' );
-
-		return getToken()
-			.then( credentials => downloadTranslations( credentials ) );
-	}
 };
 
 module.exports = tasks;
diff --git a/packages/ckeditor5-dev-env/package.json b/packages/ckeditor5-dev-env/package.json
index e2936d68b..61cdb49b2 100644
--- a/packages/ckeditor5-dev-env/package.json
+++ b/packages/ckeditor5-dev-env/package.json
@@ -34,6 +34,9 @@
     "node": ">=6.0.0",
     "npm": ">=3.0.0"
   },
+  "bin": {
+    "ckeditor5-dev-env-translations": "./bin/translations.js"
+  },
   "author": "CKSource (http://cksource.com/)",
   "license": "(GPL-2.0 OR LGPL-2.1 OR MPL-1.1)",
   "homepage": "https://github.com/ckeditor/ckeditor5-dev/tree/master/packages/ckeditor5-dev-env",

From fb045f770765dc89a43c04efc5c85a07309c01a5 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Maciej=20Go=C5=82aszewski?= <jodator@jodator.net>
Date: Thu, 12 Oct 2017 16:08:23 +0200
Subject: [PATCH 05/11] Other: Update indent in
 transformcommitforsubrepository.js after removing gulp logger.

---
 .../transform-commit/transformcommitforsubrepository.js     | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/packages/ckeditor5-dev-env/lib/release-tools/utils/transform-commit/transformcommitforsubrepository.js b/packages/ckeditor5-dev-env/lib/release-tools/utils/transform-commit/transformcommitforsubrepository.js
index a5f7baf7a..8edb278eb 100644
--- a/packages/ckeditor5-dev-env/lib/release-tools/utils/transform-commit/transformcommitforsubrepository.js
+++ b/packages/ckeditor5-dev-env/lib/release-tools/utils/transform-commit/transformcommitforsubrepository.js
@@ -9,9 +9,9 @@ const chalk = require( 'chalk' );
 const { logger } = require( '@ckeditor/ckeditor5-dev-utils' );
 const utils = require( './transform-commit-utils' );
 
-// A size of indent for a log. The number is equal to length of the Gulp log string:
-// '[XX:YY:ZZ] * 1234567 ', where '1234567' is a short commit id.
-const INDENT_SIZE = 21;
+// A size of indent for a log. The number is equal to length of the log string:
+// '* 1234567 ', where '1234567' is a short commit id.
+const INDENT_SIZE = 10;
 
 /**
  * Parses a single commit:

From 5a7b9791cdb49a592eaa0aee766209480b9c6e06 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Maciej=20Go=C5=82aszewski?= <jodator@jodator.net>
Date: Thu, 12 Oct 2017 16:18:20 +0200
Subject: [PATCH 06/11] Enhancement: Remove gulp dependency from main
 repository.

---
 README.md                                     |  2 +-
 package.json                                  |  2 +-
 .../ckeditor5-dev-docs/bin/publish-nightly.js |  2 +-
 packages/ckeditor5-dev-env/README.md          | 48 +++++++++----------
 gulpfile.js => scripts/changelog.js           |  9 ++--
 5 files changed, 30 insertions(+), 33 deletions(-)
 rename gulpfile.js => scripts/changelog.js (56%)
 mode change 100644 => 100755

diff --git a/README.md b/README.md
index ea933d6e8..9301ee21b 100644
--- a/README.md
+++ b/README.md
@@ -33,7 +33,7 @@ npm run coverage
 ## Releasing
 
 1. Fetch all changes and switch to `master`!
-1. Execute `gulp changelog`.
+1. Execute `npm run changelog`.
    * At the current stage, a single change will be added to all packages which it touched. Sometimes, this means that in one of these packages the entry will not have much sense. Browse the changes, check if they are relevant.
       * If not and the package should not be released, just type "skip". However, this is not the best option because Lerna will also recognised this package as changed and will try to release it.
       * If the changes are a bit irrelevant, but the package still should be released, pick the "patch" bump, remove all the irrelevant entries from the changelog and if it became empty after that, add the "Internal changes only (updated dependencies, documentation, etc.)" text.
diff --git a/package.json b/package.json
index 529f66390..3a049e407 100644
--- a/package.json
+++ b/package.json
@@ -6,7 +6,6 @@
     "chalk": "^2.1.0",
     "eslint": "^4.8.0",
     "eslint-config-ckeditor5": "^1.0.6",
-    "gulp": "^3.9.1",
     "husky": "^0.14.3",
     "istanbul": "^0.4.4",
     "lerna": "^2.2.0",
@@ -24,6 +23,7 @@
   "scripts": {
     "test": "mocha `./scripts/get-test-directories.sh` --recursive",
     "coverage": "istanbul cover _mocha `./scripts/get-test-directories.sh` -- --recursive",
+    "changelog": "node ./scripts/changelog.js",
     "lint": "eslint --quiet '**/*.js'",
     "precommit": "lint-staged"
   },
diff --git a/packages/ckeditor5-dev-docs/bin/publish-nightly.js b/packages/ckeditor5-dev-docs/bin/publish-nightly.js
index fd698e0bd..94576be2a 100755
--- a/packages/ckeditor5-dev-docs/bin/publish-nightly.js
+++ b/packages/ckeditor5-dev-docs/bin/publish-nightly.js
@@ -34,7 +34,7 @@ exec( `git clone ${ mainRepoUrl }.git` );
 
 // Build the documentation.
 console.log( 'Building documentation...' );
-exec( 'gulp docs --production' );
+exec( 'npm run docs -- --production' );
 
 console.log( 'Copying files...' );
 
diff --git a/packages/ckeditor5-dev-env/README.md b/packages/ckeditor5-dev-env/README.md
index 55d7bf898..15ba0a93e 100644
--- a/packages/ckeditor5-dev-env/README.md
+++ b/packages/ckeditor5-dev-env/README.md
@@ -13,33 +13,31 @@ More information about development tools packages can be found at the following
 npm i --save-dev @ckeditor/ckeditor5-dev-env
 ```
 
-Then add tasks to your `gulpfile.js`:
+Then create a script that run tasks:
 
 ```js
-// Generate changelog for the current package.
-gulp.task( 'changelog:self', () => {
-	return require( '@ckeditor/ckeditor5-dev-env' ).generateChangelogForSinglePackage();
-} );
-
-// Generate changelog for all dependencies (repository using multiple repositories).
-gulp.task( 'changelog:packages', () => {
-	return require( '@ckeditor/ckeditor5-dev-env' ).generateChangelogForSubRepositories( /* options */ );
-} );
-
-// Generate changelog for all packages (repository contains multiple packages).
-gulp.task( 'changelog:packages', () => {
-	return require( '@ckeditor/ckeditor5-dev-env' ).generateChangelogForSubPackages( /* options */ );
-} );
-
-// Create release for the current package.
-gulp.task( 'release:self', () => {
-	return require( '@ckeditor/ckeditor5-dev-env' ).releaseRepository();
-} );
-
-// Create release for all dependencies.
-gulp.task( 'release:packages', () => {
-	return require( '@ckeditor/ckeditor5-dev-env' ).releaseSubRepositories( /* options */ );
-} );
+// scripts/changelog-self.js: Generate changelog for the current package. 
+require( '@ckeditor/ckeditor5-dev-env' ).generateChangelogForSinglePackage();
+```
+
+```js
+// scripts/changelog-repos.js: Generate changelog for all dependencies (repository using multiple repositories).
+require( '@ckeditor/ckeditor5-dev-env' ).generateChangelogForSubRepositories( /* options */ );
+```
+
+```js
+// scripts/changelog-packages.js: Generate changelog for all packages (repository contains multiple packages).
+require( '@ckeditor/ckeditor5-dev-env' ).generateChangelogForSubPackages( /* options */ );
+```
+
+```js
+// scripts/release-self.js: Create release for the current package.
+require( '@ckeditor/ckeditor5-dev-env' ).releaseRepository();
+```
+
+```js
+// scripts/release-packages.js: Create release for all dependencies.
+require( '@ckeditor/ckeditor5-dev-env' ).releaseSubRepositories( /* options */ );
 ```
 
 ### Generating changelog
diff --git a/gulpfile.js b/scripts/changelog.js
old mode 100644
new mode 100755
similarity index 56%
rename from gulpfile.js
rename to scripts/changelog.js
index bc102e742..c9b8f2dd3
--- a/gulpfile.js
+++ b/scripts/changelog.js
@@ -1,3 +1,5 @@
+#!/usr/bin/env node
+
 /**
  * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.
  * For licensing, see LICENSE.md.
@@ -5,11 +7,8 @@
 
 'use strict';
 
-const gulp = require( 'gulp' );
-
-gulp.task( 'changelog', () => {
-	return require( '@ckeditor/ckeditor5-dev-env' ).generateChangelogForSubPackages( {
+require( '@ckeditor/ckeditor5-dev-env' )
+	.generateChangelogForSubPackages( {
 		cwd: process.cwd(),
 		packages: 'packages'
 	} );
-} );

From 60da1d844f25f00405b3a21f493c5eacf461c1a4 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Maciej=20Go=C5=82aszewski?= <jodator@jodator.net>
Date: Thu, 12 Oct 2017 19:18:08 +0200
Subject: [PATCH 07/11] Enhancement: Use jsdoc directly without gulp-jsdoc3.

---
 packages/ckeditor5-dev-docs/lib/index.js | 84 ++++++++++++++++--------
 packages/ckeditor5-dev-docs/package.json |  5 +-
 2 files changed, 59 insertions(+), 30 deletions(-)

diff --git a/packages/ckeditor5-dev-docs/lib/index.js b/packages/ckeditor5-dev-docs/lib/index.js
index b6862c47c..5c57cdc27 100644
--- a/packages/ckeditor5-dev-docs/lib/index.js
+++ b/packages/ckeditor5-dev-docs/lib/index.js
@@ -5,8 +5,12 @@
 
 'use strict';
 
-const gulp = require( 'gulp' );
-const jsdoc = require( 'gulp-jsdoc3' );
+const fs = require( 'fs' );
+const tmp = require( 'tmp' );
+const map = require( 'map-stream' );
+const vfs = require( 'vinyl-fs' );
+
+const { tools } = require( '@ckeditor/ckeditor5-dev-utils' );
 
 module.exports = {
 	build
@@ -34,35 +38,59 @@ function build( config ) {
 		process.env.JSDOC_VALIDATE_ONLY = true;
 	}
 
-	const jsDocConfig = {
-		opts: {
-			encoding: 'utf8',
-			recurse: true,
-			access: 'all',
-			template: 'templates/silent'
-		},
-		plugins: [
-			require.resolve( 'jsdoc/plugins/markdown' ),
-			require.resolve( '@ckeditor/jsdoc-plugins/lib/export-fixer/export-fixer' ),
-			require.resolve( '@ckeditor/jsdoc-plugins/lib/custom-tags/error' ),
-			require.resolve( '@ckeditor/jsdoc-plugins/lib/custom-tags/observable' ),
-			require.resolve( '@ckeditor/jsdoc-plugins/lib/observable-event-provider' ),
-			require.resolve( '@ckeditor/jsdoc-plugins/lib/relation-fixer' ),
-			require.resolve( '@ckeditor/jsdoc-plugins/lib/longname-fixer/longname-fixer' ),
-			require.resolve( '@ckeditor/jsdoc-plugins/lib/event-extender/event-extender' ),
-			require.resolve( '@ckeditor/jsdoc-plugins/lib/validator/validator' ),
-			require.resolve( '@ckeditor/jsdoc-plugins/lib/utils/doclet-logger' )
-		]
-	};
+	const files = [];
 
 	return new Promise( ( resolve, reject ) => {
-		gulp.src( sourceFiles, { read: false } )
-			.pipe( jsdoc( jsDocConfig, result => {
-				if ( result instanceof Error ) {
-					return reject( result.message );
-				}
+		vfs.src( sourceFiles )
+			.pipe( map( ( file, callback ) => {
+				files.push( file.path );
+				callback( null, file );
+			} ).on( 'end', () => {
+				const jsDocConfig = {
+					plugins: [
+						require.resolve( 'jsdoc/plugins/markdown' ),
+						require.resolve( '@ckeditor/jsdoc-plugins/lib/export-fixer/export-fixer' ),
+						require.resolve( '@ckeditor/jsdoc-plugins/lib/custom-tags/error' ),
+						require.resolve( '@ckeditor/jsdoc-plugins/lib/custom-tags/observable' ),
+						require.resolve( '@ckeditor/jsdoc-plugins/lib/observable-event-provider' ),
+						require.resolve( '@ckeditor/jsdoc-plugins/lib/relation-fixer' ),
+						require.resolve( '@ckeditor/jsdoc-plugins/lib/longname-fixer/longname-fixer' ),
+						require.resolve( '@ckeditor/jsdoc-plugins/lib/event-extender/event-extender' ),
+						require.resolve( '@ckeditor/jsdoc-plugins/lib/validator/validator' ),
+						require.resolve( '@ckeditor/jsdoc-plugins/lib/utils/doclet-logger' )
+					],
+					source: {
+						include: files
+					},
+					opts: {
+						encoding: 'utf8',
+						recurse: true,
+						access: 'all',
+						template: 'templates/silent'
+					}
+				};
+
+				const tmpConfig = tmp.fileSync();
+
+				fs.writeFile( tmpConfig.name, JSON.stringify( jsDocConfig ), 'utf8', error => {
+					if ( error ) {
+						return reject( error );
+					}
+
+					const cmd = require.resolve( 'jsdoc/jsdoc.js' );
+
+					console.log( 'JSDoc started...' );
+
+					try {
+						tools.shExec( `${ cmd } -c ${ tmpConfig.name }`, { verbosity: 'info' } );
+					} catch ( error ) {
+						return reject( 'Error during JSDoc generation.' );
+					}
+
+					console.log( `Documented ${ files.length } files!` );
 
-				return resolve( result );
+					resolve();
+				} );
 			} ) );
 	} );
 }
diff --git a/packages/ckeditor5-dev-docs/package.json b/packages/ckeditor5-dev-docs/package.json
index a4a576fab..abf171c5f 100644
--- a/packages/ckeditor5-dev-docs/package.json
+++ b/packages/ckeditor5-dev-docs/package.json
@@ -7,8 +7,9 @@
   "dependencies": {
     "@ckeditor/ckeditor5-dev-utils": "^4.0.2",
     "@ckeditor/jsdoc-plugins": "^1.8.0",
-    "gulp": "^3.9.1",
-    "gulp-jsdoc3": "ckeditor/gulp-jsdoc3"
+    "jsdoc": "3.4.3",
+    "map-stream": "0.0.7",
+    "vinyl-fs": "^2.4.4"
   },
   "engines": {
     "node": ">=6.0.0",

From a0aa4cf5c05205b2d89ff8e2065997d4a38c205b Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Maciej=20Go=C5=82aszewski?= <jodator@jodator.net>
Date: Thu, 12 Oct 2017 19:34:35 +0200
Subject: [PATCH 08/11] Tests: Remove translations tests from index.js.

---
 packages/ckeditor5-dev-env/tests/index.js | 34 -----------------------
 1 file changed, 34 deletions(-)

diff --git a/packages/ckeditor5-dev-env/tests/index.js b/packages/ckeditor5-dev-env/tests/index.js
index 6097ae9d4..b754d5637 100644
--- a/packages/ckeditor5-dev-env/tests/index.js
+++ b/packages/ckeditor5-dev-env/tests/index.js
@@ -147,38 +147,4 @@ describe( 'dev-env/index', () => {
 				} );
 		} );
 	} );
-
-	describe( 'collectTranslations()', () => {
-		it( 'should collect translations', () => {
-			tasks.collectTranslations();
-
-			sinon.assert.calledOnce( stubs.translations.collect );
-		} );
-	} );
-
-	describe( 'uploadTranslations()', () => {
-		it( 'should upload translations', () => {
-			stubs.translations.getToken.returns( Promise.resolve( { token: 'token' } ) );
-
-			return tasks.uploadTranslations().then( () => {
-				sinon.assert.calledOnce( stubs.translations.upload );
-				sinon.assert.alwaysCalledWithExactly( stubs.translations.upload, {
-					token: 'token',
-				} );
-			} );
-		} );
-	} );
-
-	describe( 'downloadTranslations()', () => {
-		it( 'should download translations', () => {
-			stubs.translations.getToken.returns( Promise.resolve( { token: 'token' } ) );
-
-			return tasks.downloadTranslations().then( () => {
-				sinon.assert.calledOnce( stubs.translations.download );
-				sinon.assert.alwaysCalledWithExactly( stubs.translations.download, {
-					token: 'token',
-				} );
-			} );
-		} );
-	} );
 } );

From 5d8ca466d14d4c9eeb8b3e5c722b9a6d7e7025df Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Maciej=20Go=C5=82aszewski?= <jodator@jodator.net>
Date: Fri, 13 Oct 2017 11:07:57 +0200
Subject: [PATCH 09/11] Other: Add coverage to files ignored by ESLint.

---
 package.json | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/package.json b/package.json
index 3a049e407..00fb44ae1 100644
--- a/package.json
+++ b/package.json
@@ -32,5 +32,8 @@
       "eslint --quiet"
     ]
   },
+  "eslintIgnore": [
+    "coverage/**"
+  ],
   "version": "0.0.34"
 }

From 228228112a8928c8eba7388a9c089ba1f31a448c Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Maciej=20Go=C5=82aszewski?= <jodator@jodator.net>
Date: Fri, 13 Oct 2017 14:59:27 +0200
Subject: [PATCH 10/11] Other: Add error.message from JSDOC error.

---
 packages/ckeditor5-dev-docs/lib/index.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/packages/ckeditor5-dev-docs/lib/index.js b/packages/ckeditor5-dev-docs/lib/index.js
index 5c57cdc27..d741828f8 100644
--- a/packages/ckeditor5-dev-docs/lib/index.js
+++ b/packages/ckeditor5-dev-docs/lib/index.js
@@ -84,7 +84,7 @@ function build( config ) {
 					try {
 						tools.shExec( `${ cmd } -c ${ tmpConfig.name }`, { verbosity: 'info' } );
 					} catch ( error ) {
-						return reject( 'Error during JSDoc generation.' );
+						return reject( `Error during JSDoc generation: ${ error.message }` );
 					}
 
 					console.log( `Documented ${ files.length } files!` );

From b521b8906a764e31ad610bdde03b421b4d76b811 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Piotrek=20Koszuli=C5=84ski?= <pkoszulinski@gmail.com>
Date: Sat, 11 Nov 2017 22:44:11 +0100
Subject: [PATCH 11/11] Fixed incorrectly resolved conflict.

---
 package.json | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/package.json b/package.json
index 7a49a5c3e..124607c26 100644
--- a/package.json
+++ b/package.json
@@ -35,5 +35,5 @@
   "eslintIgnore": [
     "coverage/**"
   ],
-  "version": "0.0.346
+  "version": "0.0.36"
 }