1 // This file is part of Moodle - http://moodle.org/
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.
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.
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/>.
15 /* jshint node: true, browser: false */
19 * @copyright 2014 Andrew Nicols
20 * @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
28 module.exports = function(grunt) {
29 var path = require('path'),
31 cwd = process.env.PWD || process.cwd(),
32 async = require('async'),
33 DOMParser = require('xmldom').DOMParser,
34 xpath = require('xpath'),
35 semver = require('semver'),
36 watchman = require('fb-watchman'),
37 watchmanClient = new watchman.Client(),
38 gruntFilePath = process.cwd();
40 // Verify the node version is new enough.
41 var expected = semver.validRange(grunt.file.readJSON('package.json').engines.node);
42 var actual = semver.valid(process.version);
43 if (!semver.satisfies(actual, expected)) {
44 grunt.fail.fatal('Node version not satisfied. Require ' + expected + ', version installed: ' + actual);
47 // Windows users can't run grunt in a subdirectory, so allow them to set
48 // the root by passing --root=path/to/dir.
49 if (grunt.option('root')) {
50 var root = grunt.option('root');
51 if (grunt.file.exists(__dirname, root)) {
52 cwd = path.join(__dirname, root);
53 grunt.log.ok('Setting root to ' + cwd);
55 grunt.fail.fatal('Setting root to ' + root + ' failed - path does not exist');
60 if (grunt.option('files')) {
61 // Accept a comma separated list of files to process.
62 files = grunt.option('files').split(',');
65 var inAMD = path.basename(cwd) == 'amd';
67 // Globbing pattern for matching all AMD JS source files.
70 amdSrc.push(cwd + "/src/*.js");
71 amdSrc.push(cwd + "/src/**/*.js");
73 amdSrc.push("**/amd/src/*.js");
74 amdSrc.push("**/amd/src/**/*.js");
78 * Function to generate the destination for the uglify task
79 * (e.g. build/file.min.js). This function will be passed to
80 * the rename property of files array when building dynamically:
81 * http://gruntjs.com/configuring-tasks#building-the-files-object-dynamically
83 * @param {String} destPath the current destination
84 * @param {String} srcPath the matched src path
85 * @return {String} The rewritten destination path.
87 var babelRename = function(destPath, srcPath) {
88 destPath = srcPath.replace('src', 'build');
89 destPath = destPath.replace('.js', '.min.js');
94 * Find thirdpartylibs.xml and generate an array of paths contained within
95 * them (used to generate ignore files and so on).
97 * @return {array} The list of thirdparty paths.
99 var getThirdPartyPathsFromXML = function() {
100 var thirdpartyfiles = grunt.file.expand('*/**/thirdpartylibs.xml');
101 var libs = ['node_modules/', 'vendor/'];
103 thirdpartyfiles.forEach(function(file) {
104 var dirname = path.dirname(file);
106 var doc = new DOMParser().parseFromString(grunt.file.read(file));
107 var nodes = xpath.select("/libraries/library/location/text()", doc);
109 nodes.forEach(function(node) {
110 var lib = path.join(dirname, node.toString());
111 if (grunt.file.isDir(lib)) {
112 // Ensure trailing slash on dirs.
113 lib = lib.replace(/\/?$/, '/');
116 // Look for duplicate paths before adding to array.
117 if (libs.indexOf(lib) === -1) {
125 // Project configuration.
128 // Even though warnings dont stop the build we don't display warnings by default because
129 // at this moment we've got too many core warnings.
130 options: {quiet: !grunt.option('show-lint-warnings')},
131 amd: {src: files ? files : amdSrc},
132 // Check YUI module source files.
133 yui: {src: files ? files : ['**/yui/src/**/*.js', '!*/**/yui/src/*/meta/*.js']}
140 'transform-es2015-modules-amd-lazy',
141 'system-import-transformer',
142 // This plugin modifies the Babel transpiling for "export default"
143 // so that if it's used then only the exported value is returned
144 // by the generated AMD module.
146 // It also adds the Moodle plugin name to the AMD module definition
147 // so that it can be imported as expected in other modules.
148 path.resolve('babel-plugin-add-module-to-define.js'),
149 '@babel/plugin-syntax-dynamic-import',
150 '@babel/plugin-syntax-import-meta',
151 ['@babel/plugin-proposal-class-properties', {'loose': false}],
152 '@babel/plugin-proposal-json-strings'
156 // This minification plugin needs to be disabled because it breaks the
157 // source map generation and causes invalid source maps to be output.
161 ['@babel/preset-env', {
180 src: files ? files : amdSrc,
188 "theme/boost/style/moodle.css": "theme/boost/scss/preset/default.scss",
189 "theme/classic/style/moodle.css": "theme/classic/scss/classicgrunt.scss"
193 includePaths: ["theme/boost/scss/", "theme/classic/scss/"]
198 nospawn: true // We need not to spawn so config can be changed dynamically.
201 files: ['**/amd/src/**/*.js'],
205 files: ['**/theme/boost/scss/**/*.scss'],
209 files: ['**/*.css', '**/theme/**/!(moodle.css|editor.css)'],
213 files: ['**/yui/src/**/*.js'],
217 files: ['**/tests/behat/*.feature'],
218 tasks: ['gherkinlint']
224 paths: files ? files : [cwd]
229 files: files ? files : ['**/tests/behat/*.feature'],
234 options: {syntax: 'scss'},
235 src: files ? files : ['*/**/*.scss']
238 src: files ? files : ['*/**/*.css'],
242 // These rules have to be disabled in .stylelintrc for scss compat.
243 "at-rule-no-unknown": true,
252 * Generate ignore files (utilising thirdpartylibs.xml data)
254 tasks.ignorefiles = function() {
255 // An array of paths to third party directories.
256 var thirdPartyPaths = getThirdPartyPathsFromXML();
257 // Generate .eslintignore.
258 var eslintIgnores = ['# Generated by "grunt ignorefiles"', '*/**/yui/src/*/meta/', '*/**/build/'].concat(thirdPartyPaths);
259 grunt.file.write('.eslintignore', eslintIgnores.join('\n'));
260 // Generate .stylelintignore.
261 var stylelintIgnores = [
262 '# Generated by "grunt ignorefiles"',
264 'theme/boost/style/moodle.css',
265 'theme/classic/style/moodle.css',
266 ].concat(thirdPartyPaths);
267 grunt.file.write('.stylelintignore', stylelintIgnores.join('\n'));
271 * Shifter task. Is configured with a path to a specific file or a directory,
272 * in the case of a specific file it will work out the right module to be built.
274 * Note that this task runs the invidiaul shifter jobs async (becase it spawns
275 * so be careful to to call done().
277 tasks.shifter = function() {
278 var done = this.async(),
279 options = grunt.config('shifter.options');
281 // Run the shifter processes one at a time to avoid confusing output.
282 async.eachSeries(options.paths, function(src, filedone) {
284 args.push(path.normalize(__dirname + '/node_modules/shifter/bin/shifter'));
286 // Always ignore the node_modules directory.
287 args.push('--excludes', 'node_modules');
289 // Determine the most appropriate options to run with based upon the current location.
290 if (grunt.file.isMatch('**/yui/**/*.js', src)) {
291 // When passed a JS file, build our containing module (this happen with
293 grunt.log.debug('Shifter passed a specific JS file');
294 src = path.dirname(path.dirname(src));
295 options.recursive = false;
296 } else if (grunt.file.isMatch('**/yui/src', src)) {
297 // When in a src directory --walk all modules.
298 grunt.log.debug('In a src directory');
300 options.recursive = false;
301 } else if (grunt.file.isMatch('**/yui/src/*', src)) {
302 // When in module, only build our module.
303 grunt.log.debug('In a module directory');
304 options.recursive = false;
305 } else if (grunt.file.isMatch('**/yui/src/*/js', src)) {
306 // When in module src, only build our module.
307 grunt.log.debug('In a source directory');
308 src = path.dirname(src);
309 options.recursive = false;
312 if (grunt.option('watch')) {
313 grunt.fail.fatal('The --watch option has been removed, please use `grunt watch` instead');
316 // Add the stderr option if appropriate
317 if (grunt.option('verbose')) {
318 args.push('--lint-stderr');
321 if (grunt.option('no-color')) {
322 args.push('--color=false');
325 var execShifter = function() {
327 grunt.log.ok("Running shifter on " + src);
331 opts: {cwd: src, stdio: 'inherit', env: process.env}
332 }, function(error, result, code) {
334 grunt.fail.fatal('Shifter failed with code: ' + code);
336 grunt.log.ok('Shifter build complete.');
342 // Actually run shifter.
343 if (!options.recursive) {
346 // Check that there are yui modules otherwise shifter ends with exit code 1.
347 if (grunt.file.expand({cwd: src}, '**/yui/src/**/*.js').length > 0) {
348 args.push('--recursive');
351 grunt.log.ok('No YUI modules to build.');
358 tasks.gherkinlint = function() {
359 var done = this.async(),
360 options = grunt.config('gherkinlint.options');
362 var args = grunt.file.expand(options.files);
363 args.unshift(path.normalize(__dirname + '/node_modules/.bin/gherkin-lint'));
367 opts: {stdio: 'inherit', env: process.env}
368 }, function(error, result, code) {
369 // Propagate the exit code.
374 tasks.startup = function() {
375 // Are we in a YUI directory?
376 if (path.basename(path.resolve(cwd, '../../')) == 'yui') {
377 grunt.task.run('yui');
378 // Are we in an AMD directory?
380 grunt.task.run('amd');
383 grunt.task.run('css');
384 grunt.task.run('js');
385 grunt.task.run('gherkinlint');
390 * This is a wrapper task to handle the grunt watch command. It attempts to use
391 * Watchman to monitor for file changes, if it's installed, because it's much faster.
393 * If Watchman isn't installed then it falls back to the grunt-contrib-watch file
394 * watcher for backwards compatibility.
396 tasks.watch = function() {
397 var watchTaskDone = this.async();
398 var watchInitialised = false;
399 var watchTaskQueue = {};
400 var processingQueue = false;
402 // Grab the tasks and files that have been queued up and execute them.
403 var processWatchTaskQueue = function() {
404 if (!Object.keys(watchTaskQueue).length || processingQueue) {
405 // If there is nothing in the queue or we're already processing then wait.
409 processingQueue = true;
411 // Grab all tasks currently in the queue.
412 var queueToProcess = watchTaskQueue;
417 Object.keys(queueToProcess),
418 function(task, next) {
419 var files = queueToProcess[task];
420 var filesOption = '--files=' + files.join(',');
421 grunt.log.ok('Running task ' + task + ' for files ' + filesOption);
423 // Spawn the task in a child process so that it doesn't kill this one
427 // Spawn with the grunt bin.
429 // Run from current working dir and inherit stdio from process.
434 args: [task, filesOption]
436 function(err, res, code) {
438 // The grunt task failed.
439 grunt.log.error(err);
442 // Move on to the next task.
448 // No longer processing.
449 processingQueue = false;
450 // Once all of the tasks are done then recurse just in case more tasks
451 // were queued while we were processing.
452 processWatchTaskQueue();
457 var watchConfig = grunt.config.get(['watch']);
458 watchConfig = Object.keys(watchConfig).reduce(function(carry, key) {
459 if (key == 'options') {
463 var value = watchConfig[key];
464 var fileGlobs = value.files;
465 var taskNames = value.tasks;
467 taskNames.forEach(function(taskName) {
468 carry[taskName] = fileGlobs;
474 watchmanClient.on('error', function(error) {
475 // We have to add an error handler here and parse the error string because the
476 // example way from the docs to check if Watchman is installed doesn't actually work!!
477 // See: https://github.com/facebook/watchman/issues/509
478 if (error.message.match('Watchman was not found')) {
479 // If watchman isn't installed then we should fallback to the other watch task.
480 grunt.log.ok('It is recommended that you install Watchman for better performance using the "watch" command.');
482 // Fallback to the old grunt-contrib-watch task.
483 grunt.renameTask('watch-grunt', 'watch');
484 grunt.task.run(['watch']);
485 // This task is finished.
488 grunt.log.error(error);
494 watchmanClient.on('subscription', function(resp) {
495 if (resp.subscription !== 'grunt-watch') {
499 resp.files.forEach(function(file) {
500 grunt.log.ok('File changed: ' + file.name);
502 var fullPath = cwd + '/' + file.name;
503 Object.keys(watchConfig).forEach(function(task) {
504 var fileGlobs = watchConfig[task];
505 var match = fileGlobs.every(function(fileGlob) {
506 return grunt.file.isMatch(fileGlob, fullPath);
509 // If we are watching a subdirectory then the file.name will be relative
510 // to that directory. However the grunt tasks expect the file paths to be
511 // relative to the Gruntfile.js location so let's normalise them before
512 // adding them to the queue.
513 var relativePath = fullPath.replace(gruntFilePath + '/', '');
514 if (task in watchTaskQueue) {
515 if (!watchTaskQueue[task].includes(relativePath)) {
516 watchTaskQueue[task] = watchTaskQueue[task].concat(relativePath);
519 watchTaskQueue[task] = [relativePath];
525 processWatchTaskQueue();
528 process.on('SIGINT', function() {
529 // Let the user know that they may need to manually stop the Watchman daemon if they
530 // no longer want it running.
531 if (watchInitialised) {
532 grunt.log.ok('The Watchman daemon may still be running and may need to be stopped manually.');
538 // Initiate the watch on the current directory.
539 watchmanClient.command(['watch-project', cwd], function(watchError, watchResponse) {
541 grunt.log.error('Error initiating watch:', watchError);
546 if ('warning' in watchResponse) {
547 grunt.log.error('warning: ', watchResponse.warning);
550 var watch = watchResponse.watch;
551 var relativePath = watchResponse.relative_path;
552 watchInitialised = true;
554 watchmanClient.command(['clock', watch], function(clockError, clockResponse) {
556 grunt.log.error('Failed to query clock:', clockError);
561 // Use the matching patterns specified in the watch config.
562 var matches = Object.keys(watchConfig).map(function(task) {
563 var fileGlobs = watchConfig[task];
564 var fileGlobMatches = fileGlobs.map(function(fileGlob) {
565 return ['match', fileGlob, 'wholename'];
568 return ['allof'].concat(fileGlobMatches);
572 expression: ["anyof"].concat(matches),
573 // Which fields we're interested in.
574 fields: ["name", "size", "type"],
575 // Add our time constraint.
576 since: clockResponse.clock
580 /* eslint-disable camelcase */
581 sub.relative_root = relativePath;
584 watchmanClient.command(['subscribe', watch, 'grunt-watch', sub], function(subscribeError) {
585 if (subscribeError) {
586 // Probably an error in the subscription criteria.
587 grunt.log.error('failed to subscribe: ', subscribeError);
592 grunt.log.ok('Listening for changes to files in ' + cwd);
598 // On watch, we dynamically modify config to build only affected files. This
599 // method is slightly complicated to deal with multiple changed files at once (copied
600 // from the grunt-contrib-watch readme).
601 var changedFiles = Object.create(null);
602 var onChange = grunt.util._.debounce(function() {
603 var files = Object.keys(changedFiles);
604 grunt.config('eslint.amd.src', files);
605 grunt.config('eslint.yui.src', files);
606 grunt.config('shifter.options.paths', files);
607 grunt.config('gherkinlint.options.files', files);
608 grunt.config('babel.dist.files', [{expand: true, src: files, rename: babelRename}]);
609 changedFiles = Object.create(null);
612 grunt.event.on('watch', function(action, filepath) {
613 changedFiles[filepath] = action;
617 // Register NPM tasks.
618 grunt.loadNpmTasks('grunt-contrib-uglify');
619 grunt.loadNpmTasks('grunt-contrib-watch');
620 grunt.loadNpmTasks('grunt-sass');
621 grunt.loadNpmTasks('grunt-eslint');
622 grunt.loadNpmTasks('grunt-stylelint');
623 grunt.loadNpmTasks('grunt-babel');
625 // Rename the grunt-contrib-watch "watch" task because we're going to wrap it.
626 grunt.renameTask('watch', 'watch-grunt');
628 // Register JS tasks.
629 grunt.registerTask('shifter', 'Run Shifter against the current directory', tasks.shifter);
630 grunt.registerTask('gherkinlint', 'Run gherkinlint against the current directory', tasks.gherkinlint);
631 grunt.registerTask('ignorefiles', 'Generate ignore files for linters', tasks.ignorefiles);
632 grunt.registerTask('watch', 'Run tasks on file changes', tasks.watch);
633 grunt.registerTask('yui', ['eslint:yui', 'shifter']);
634 grunt.registerTask('amd', ['eslint:amd', 'babel']);
635 grunt.registerTask('js', ['amd', 'yui']);
637 // Register CSS taks.
638 grunt.registerTask('css', ['stylelint:scss', 'sass', 'stylelint:css']);
639 grunt.registerTask('scss', ['stylelint:scss', 'sass']);
640 grunt.registerTask('rawcss', ['stylelint:css']);
642 // Register the startup task.
643 grunt.registerTask('startup', 'Run the correct tasks for the current directory', tasks.startup);
645 // Register the default task.
646 grunt.registerTask('default', ['startup']);