MDL-55048 grunt: make uglify task behave as before
[moodle.git] / Gruntfile.js
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1// This file is part of Moodle - http://moodle.org/
2//
3// Moodle is free software: you can redistribute it and/or modify
4// it under the terms of the GNU General Public License as published by
5// the Free Software Foundation, either version 3 of the License, or
6// (at your option) any later version.
7//
8// Moodle is distributed in the hope that it will be useful,
9// but WITHOUT ANY WARRANTY; without even the implied warranty of
10// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
11// GNU General Public License for more details.
12//
13// You should have received a copy of the GNU General Public License
14// along with Moodle. If not, see <http://www.gnu.org/licenses/>.
0b777a06 15/* jshint node: true, browser: false */
3adb62b7 16/* eslint-env node */
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17
18/**
19 * @copyright 2014 Andrew Nicols
20 * @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
21 */
22
23/**
24 * Grunt configuration
25 */
26
27module.exports = function(grunt) {
28 var path = require('path'),
e67585f8 29 tasks = {},
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30 cwd = process.env.PWD || process.cwd(),
31 async = require('async'),
32 DOMParser = require('xmldom').DOMParser,
33 xpath = require('xpath');
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34
35 // Windows users can't run grunt in a subdirectory, so allow them to set
36 // the root by passing --root=path/to/dir.
37 if (grunt.option('root')) {
38 var root = grunt.option('root');
39 if (grunt.file.exists(__dirname, root)) {
40 cwd = path.join(__dirname, root);
b18478b9 41 grunt.log.ok('Setting root to ' + cwd);
00cceb7f 42 } else {
b18478b9 43 grunt.fail.fatal('Setting root to ' + root + ' failed - path does not exist');
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44 }
45 }
46
47 var inAMD = path.basename(cwd) == 'amd';
adeb96d2 48
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49 // Globbing pattern for matching all AMD JS source files.
50 var amdSrc = [inAMD ? cwd + '/src/*.js' : '**/amd/src/*.js'];
51
52 /**
53 * Function to generate the destination for the uglify task
54 * (e.g. build/file.min.js). This function will be passed to
55 * the rename property of files array when building dynamically:
56 * http://gruntjs.com/configuring-tasks#building-the-files-object-dynamically
57 *
58 * @param {String} destPath the current destination
59 * @param {String} srcPath the matched src path
60 * @return {String} The rewritten destination path.
61 */
b18478b9 62 var uglifyRename = function(destPath, srcPath) {
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63 destPath = srcPath.replace('src', 'build');
64 destPath = destPath.replace('.js', '.min.js');
65 destPath = path.resolve(cwd, destPath);
66 return destPath;
67 };
68
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69 /**
70 * Find thirdpartylibs.xml and generate an array of paths contained within
71 * them (used to generate ignore files and so on).
72 *
73 * @return {array} The list of thirdparty paths.
74 */
75 var getThirdPartyPathsFromXML = function() {
76 var thirdpartyfiles = grunt.file.expand('*/**/thirdpartylibs.xml');
77 var libs = ['node_modules/', 'vendor/'];
78
b18478b9 79 thirdpartyfiles.forEach(function(file) {
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80 var dirname = path.dirname(file);
81
82 var doc = new DOMParser().parseFromString(grunt.file.read(file));
83 var nodes = xpath.select("/libraries/library/location/text()", doc);
84
85 nodes.forEach(function(node) {
86 var lib = path.join(dirname, node.toString());
87 if (grunt.file.isDir(lib)) {
88 // Ensure trailing slash on dirs.
89 lib = lib.replace(/\/?$/, '/');
90 }
91
92 // Look for duplicate paths before adding to array.
93 if (libs.indexOf(lib) === -1) {
94 libs.push(lib);
95 }
96 });
97 });
98 return libs;
99 };
100
30db70ab 101
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102 // Project configuration.
103 grunt.initConfig({
3adb62b7 104 eslint: {
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105 // Even though warnings dont stop the build we don't display warnings by default because
106 // at this moment we've got too many core warnings.
037de719 107 options: {quiet: !grunt.option('show-lint-warnings')},
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108 amd: {
109 src: amdSrc,
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110 // Check AMD with some slightly stricter rules.
111 rules: {
112 'no-unused-vars': 'error',
113 'no-implicit-globals': 'error'
b18478b9 114 }
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115 },
116 // Check YUI module source files.
a1587268 117 yui: {
30db70ab 118 src: ['**/yui/src/**/*.js', '!*/**/yui/src/*/meta/*.js'],
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119 options: {
120 // Disable some rules which we can't safely define for YUI rollups.
121 rules: {
122 'no-undef': 'off',
123 'no-unused-vars': 'off',
124 'no-unused-expressions': 'off'
125 }
126 }
a1587268 127 }
3adb62b7 128 },
adeb96d2 129 uglify: {
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130 amd: {
131 files: [{
132 expand: true,
133 src: amdSrc,
b18478b9 134 rename: uglifyRename
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135 }],
136 options: {report: 'none'}
adeb96d2 137 }
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138 },
139 less: {
140 bootstrapbase: {
141 files: {
142 "theme/bootstrapbase/style/moodle.css": "theme/bootstrapbase/less/moodle.less",
143 "theme/bootstrapbase/style/editor.css": "theme/bootstrapbase/less/editor.less",
144 },
145 options: {
146 compress: true
147 }
148 }
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149 },
150 watch: {
151 options: {
152 nospawn: true // We need not to spawn so config can be changed dynamically.
153 },
154 amd: {
155 files: ['**/amd/src/**/*.js'],
156 tasks: ['amd']
157 },
158 bootstrapbase: {
159 files: ["theme/bootstrapbase/less/**/*.less"],
160 tasks: ["less:bootstrapbase"]
161 },
162 yui: {
163 files: ['**/yui/src/**/*.js'],
a1587268 164 tasks: ['yui']
8efbb7b1 165 },
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166 },
167 shifter: {
168 options: {
169 recursive: true,
170 paths: [cwd]
171 }
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172 }
173 });
174
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175 /**
176 * Generate ignore files (utilising thirdpartylibs.xml data)
177 */
178 tasks.ignorefiles = function() {
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179 // An array of paths to third party directories.
180 var thirdPartyPaths = getThirdPartyPathsFromXML();
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181 // Generate .eslintignore.
182 var eslintIgnores = ['# Generated by "grunt ignorefiles"', '*/**/yui/src/*/meta/', '*/**/build/'].concat(thirdPartyPaths);
183 grunt.file.write('.eslintignore', eslintIgnores.join('\n'));
184 };
185
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186 /**
187 * Shifter task. Is configured with a path to a specific file or a directory,
188 * in the case of a specific file it will work out the right module to be built.
189 *
190 * Note that this task runs the invidiaul shifter jobs async (becase it spawns
191 * so be careful to to call done().
192 */
adeb96d2 193 tasks.shifter = function() {
30db70ab 194 var done = this.async(),
1aa454ed 195 options = grunt.config('shifter.options');
adeb96d2 196
1aa454ed 197 // Run the shifter processes one at a time to avoid confusing output.
b18478b9 198 async.eachSeries(options.paths, function(src, filedone) {
1aa454ed 199 var args = [];
b18478b9 200 args.push(path.normalize(__dirname + '/node_modules/shifter/bin/shifter'));
e67585f8 201
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202 // Always ignore the node_modules directory.
203 args.push('--excludes', 'node_modules');
204
adeb96d2 205 // Determine the most appropriate options to run with based upon the current location.
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206 if (grunt.file.isMatch('**/yui/**/*.js', src)) {
207 // When passed a JS file, build our containing module (this happen with
208 // watch).
209 grunt.log.debug('Shifter passed a specific JS file');
210 src = path.dirname(path.dirname(src));
211 options.recursive = false;
212 } else if (grunt.file.isMatch('**/yui/src', src)) {
213 // When in a src directory --walk all modules.
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214 grunt.log.debug('In a src directory');
215 args.push('--walk');
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216 options.recursive = false;
217 } else if (grunt.file.isMatch('**/yui/src/*', src)) {
218 // When in module, only build our module.
adeb96d2 219 grunt.log.debug('In a module directory');
adeb96d2 220 options.recursive = false;
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221 } else if (grunt.file.isMatch('**/yui/src/*/js', src)) {
222 // When in module src, only build our module.
223 grunt.log.debug('In a source directory');
224 src = path.dirname(src);
225 options.recursive = false;
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226 }
227
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228 if (grunt.option('watch')) {
229 grunt.fail.fatal('The --watch option has been removed, please use `grunt watch` instead');
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230 }
231
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232 // Add the stderr option if appropriate
233 if (grunt.option('verbose')) {
234 args.push('--lint-stderr');
235 }
236
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237 if (grunt.option('no-color')) {
238 args.push('--color=false');
239 }
240
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241 var execShifter = function() {
242
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243 grunt.log.ok("Running shifter on " + src);
244 grunt.util.spawn({
245 cmd: "node",
246 args: args,
247 opts: {cwd: src, stdio: 'inherit', env: process.env}
b18478b9 248 }, function(error, result, code) {
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249 if (code) {
250 grunt.fail.fatal('Shifter failed with code: ' + code);
251 } else {
252 grunt.log.ok('Shifter build complete.');
1aa454ed 253 filedone();
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254 }
255 });
256 };
257
adeb96d2 258 // Actually run shifter.
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259 if (!options.recursive) {
260 execShifter();
261 } else {
262 // Check that there are yui modules otherwise shifter ends with exit code 1.
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263 if (grunt.file.expand({cwd: src}, '**/yui/src/**/*.js').length > 0) {
264 args.push('--recursive');
265 execShifter();
266 } else {
267 grunt.log.ok('No YUI modules to build.');
268 filedone();
269 }
8f76bfb6 270 }
1aa454ed 271 }, done);
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272 };
273
274 tasks.startup = function() {
275 // Are we in a YUI directory?
e67585f8 276 if (path.basename(path.resolve(cwd, '../../')) == 'yui') {
a1587268 277 grunt.task.run('yui');
adeb96d2 278 // Are we in an AMD directory?
c9b6feea 279 } else if (inAMD) {
65d070ae 280 grunt.task.run('amd');
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281 } else {
282 // Run them all!.
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283 grunt.task.run('css');
284 grunt.task.run('js');
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285 }
286 };
287
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288 // On watch, we dynamically modify config to build only affected files. This
289 // method is slightly complicated to deal with multiple changed files at once (copied
290 // from the grunt-contrib-watch readme).
291 var changedFiles = Object.create(null);
292 var onChange = grunt.util._.debounce(function() {
293 var files = Object.keys(changedFiles);
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294 grunt.config('eslint.amd.src', files);
295 grunt.config('eslint.yui.src', files);
b18478b9 296 grunt.config('uglify.amd.files', [{ expand: true, src: files, rename: uglifyRename }]);
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297 grunt.config('shifter.options.paths', files);
298 changedFiles = Object.create(null);
299 }, 200);
adeb96d2 300
8efbb7b1 301 grunt.event.on('watch', function(action, filepath) {
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302 changedFiles[filepath] = action;
303 onChange();
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304 });
305
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306 // Register NPM tasks.
307 grunt.loadNpmTasks('grunt-contrib-uglify');
a4a52e56 308 grunt.loadNpmTasks('grunt-contrib-less');
8efbb7b1 309 grunt.loadNpmTasks('grunt-contrib-watch');
3adb62b7 310 grunt.loadNpmTasks('grunt-eslint');
adeb96d2 311
65d070ae 312 // Register JS tasks.
adeb96d2 313 grunt.registerTask('shifter', 'Run Shifter against the current directory', tasks.shifter);
30db70ab 314 grunt.registerTask('ignorefiles', 'Generate ignore files for linters', tasks.ignorefiles);
a1587268 315 grunt.registerTask('yui', ['eslint:yui', 'shifter']);
5f4d957c 316 grunt.registerTask('amd', ['eslint:amd', 'uglify']);
a1587268 317 grunt.registerTask('js', ['amd', 'yui']);
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318
319 // Register CSS taks.
320 grunt.registerTask('css', ['less:bootstrapbase']);
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321
322 // Register the startup task.
323 grunt.registerTask('startup', 'Run the correct tasks for the current directory', tasks.startup);
324
325 // Register the default task.
326 grunt.registerTask('default', ['startup']);
327};