Gruntfile.js

   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/>.
  15 /* jshint node: true, browser: false */
  16 /* eslint-env node */
  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
  27 /* eslint-env node */
  28 module.exports = function(grunt) {
  29     var path = require('path'),
  30         tasks = {},
  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();
  39
  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);
  45     }
  46
  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);
  54         } else {
  55             grunt.fail.fatal('Setting root to ' + root + ' failed - path does not exist');
  56         }
  57     }
  58
  59     var files = null;
  60     if (grunt.option('files')) {
  61         // Accept a comma separated list of files to process.
  62         files = grunt.option('files').split(',');
  63     }
  64
  65     var inAMD = path.basename(cwd) == 'amd';
  66
  67     // Globbing pattern for matching all AMD JS source files.
  68     var amdSrc = [];
  69     if (inAMD) {
  70         amdSrc.push(cwd + "/src/*.js");
  71         amdSrc.push(cwd + "/src/**/*.js");
  72     } else {
  73         amdSrc.push("**/amd/src/*.js");
  74         amdSrc.push("**/amd/src/**/*.js");
  75     }
  76
  77     /**
  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
  82      *
  83      * @param {String} destPath the current destination
  84      * @param {String} srcPath the  matched src path
  85      * @return {String} The rewritten destination path.
  86      */
  87     var babelRename = function(destPath, srcPath) {
  88         destPath = srcPath.replace('src', 'build');
  89         destPath = destPath.replace('.js', '.min.js');
  90         return destPath;
  91     };
  92
  93     /**
  94      * Find thirdpartylibs.xml and generate an array of paths contained within
  95      * them (used to generate ignore files and so on).
  96      *
  97      * @return {array} The list of thirdparty paths.
  98      */
  99     var getThirdPartyPathsFromXML = function() {
 100         var thirdpartyfiles = grunt.file.expand('*/**/thirdpartylibs.xml');
 101         var libs = ['node_modules/', 'vendor/'];
 102
 103         thirdpartyfiles.forEach(function(file) {
 104           var dirname = path.dirname(file);
 105
 106           var doc = new DOMParser().parseFromString(grunt.file.read(file));
 107           var nodes = xpath.select("/libraries/library/location/text()", doc);
 108
 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(/\/?$/, '/');
 114             }
 115
 116             // Look for duplicate paths before adding to array.
 117             if (libs.indexOf(lib) === -1) {
 118                 libs.push(lib);
 119             }
 120           });
 121         });
 122         return libs;
 123     };
 124
 125     // Project configuration.
 126     grunt.initConfig({
 127         eslint: {
 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']}
 134         },
 135         babel: {
 136             options: {
 137                 sourceMaps: true,
 138                 comments: false,
 139                 plugins: [
 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.
 145                     //
 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'
 153                 ],
 154                 presets: [
 155                     ['minify', {
 156                         // This minification plugin needs to be disabled because it breaks the
 157                         // source map generation and causes invalid source maps to be output.
 158                         simplify: false,
 159                         builtIns: false
 160                     }],
 161                     ['@babel/preset-env', {
 162                         targets: {
 163                             browsers: [
 164                                 ">0.25%",
 165                                 "last 2 versions",
 166                                 "not ie <= 10",
 167                                 "not op_mini all",
 168                                 "not Opera > 0",
 169                                 "not dead"
 170                             ]
 171                         },
 172                         modules: false,
 173                         useBuiltIns: false
 174                     }]
 175                 ]
 176             },
 177             dist: {
 178                 files: [{
 179                     expand: true,
 180                     src: files ? files : amdSrc,
 181                     rename: babelRename
 182                 }]
 183             }
 184         },
 185         sass: {
 186             dist: {
 187                 files: {
 188                     "theme/boost/style/moodle.css": "theme/boost/scss/preset/default.scss",
 189                     "theme/classic/style/moodle.css": "theme/classic/scss/classicgrunt.scss"
 190                 }
 191             },
 192             options: {
 193                 includePaths: ["theme/boost/scss/", "theme/classic/scss/"]
 194             }
 195         },
 196         watch: {
 197             options: {
 198                 nospawn: true // We need not to spawn so config can be changed dynamically.
 199             },
 200             amd: {
 201                 files: ['**/amd/src/**/*.js'],
 202                 tasks: ['amd']
 203             },
 204             boost: {
 205                 files: ['**/theme/boost/scss/**/*.scss'],
 206                 tasks: ['scss']
 207             },
 208             rawcss: {
 209                 files: ['**/*.css', '**/theme/**/!(moodle.css|editor.css)'],
 210                 tasks: ['rawcss']
 211             },
 212             yui: {
 213                 files: ['**/yui/src/**/*.js'],
 214                 tasks: ['yui']
 215             },
 216             gherkinlint: {
 217                 files: ['**/tests/behat/*.feature'],
 218                 tasks: ['gherkinlint']
 219             }
 220         },
 221         shifter: {
 222             options: {
 223                 recursive: true,
 224                 paths: files ? files : [cwd]
 225             }
 226         },
 227         gherkinlint: {
 228             options: {
 229                 files: files ? files : ['**/tests/behat/*.feature'],
 230             }
 231         },
 232         stylelint: {
 233             scss: {
 234                 options: {syntax: 'scss'},
 235                 src: files ? files : ['*/**/*.scss']
 236             },
 237             css: {
 238                 src: files ? files : ['*/**/*.css'],
 239                 options: {
 240                     configOverrides: {
 241                         rules: {
 242                             // These rules have to be disabled in .stylelintrc for scss compat.
 243                             "at-rule-no-unknown": true,
 244                         }
 245                     }
 246                 }
 247             }
 248         }
 249     });
 250
 251     /**
 252      * Generate ignore files (utilising thirdpartylibs.xml data)
 253      */
 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"',
 263           '**/yui/build/*',
 264           'theme/boost/style/moodle.css',
 265           'theme/classic/style/moodle.css',
 266       ].concat(thirdPartyPaths);
 267       grunt.file.write('.stylelintignore', stylelintIgnores.join('\n'));
 268     };
 269
 270     /**
 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.
 273      *
 274      * Note that this task runs the invidiaul shifter jobs async (becase it spawns
 275      * so be careful to to call done().
 276      */
 277     tasks.shifter = function() {
 278         var done = this.async(),
 279             options = grunt.config('shifter.options');
 280
 281         // Run the shifter processes one at a time to avoid confusing output.
 282         async.eachSeries(options.paths, function(src, filedone) {
 283             var args = [];
 284             args.push(path.normalize(__dirname + '/node_modules/shifter/bin/shifter'));
 285
 286             // Always ignore the node_modules directory.
 287             args.push('--excludes', 'node_modules');
 288
 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
 292                 // watch).
 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');
 299                 args.push('--walk');
 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;
 310             }
 311
 312             if (grunt.option('watch')) {
 313                 grunt.fail.fatal('The --watch option has been removed, please use `grunt watch` instead');
 314             }
 315
 316             // Add the stderr option if appropriate
 317             if (grunt.option('verbose')) {
 318                 args.push('--lint-stderr');
 319             }
 320
 321             if (grunt.option('no-color')) {
 322                 args.push('--color=false');
 323             }
 324
 325             var execShifter = function() {
 326
 327                 grunt.log.ok("Running shifter on " + src);
 328                 grunt.util.spawn({
 329                     cmd: "node",
 330                     args: args,
 331                     opts: {cwd: src, stdio: 'inherit', env: process.env}
 332                 }, function(error, result, code) {
 333                     if (code) {
 334                         grunt.fail.fatal('Shifter failed with code: ' + code);
 335                     } else {
 336                         grunt.log.ok('Shifter build complete.');
 337                         filedone();
 338                     }
 339                 });
 340             };
 341
 342             // Actually run shifter.
 343             if (!options.recursive) {
 344                 execShifter();
 345             } else {
 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');
 349                     execShifter();
 350                 } else {
 351                     grunt.log.ok('No YUI modules to build.');
 352                     filedone();
 353                 }
 354             }
 355         }, done);
 356     };
 357
 358     tasks.gherkinlint = function() {
 359         var done = this.async(),
 360             options = grunt.config('gherkinlint.options');
 361
 362         var args = grunt.file.expand(options.files);
 363         args.unshift(path.normalize(__dirname + '/node_modules/.bin/gherkin-lint'));
 364         grunt.util.spawn({
 365             cmd: 'node',
 366             args: args,
 367             opts: {stdio: 'inherit', env: process.env}
 368         }, function(error, result, code) {
 369             // Propagate the exit code.
 370             done(code === 0);
 371         });
 372     };
 373
 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?
 379         } else if (inAMD) {
 380             grunt.task.run('amd');
 381         } else {
 382             // Run them all!.
 383             grunt.task.run('css');
 384             grunt.task.run('js');
 385             grunt.task.run('gherkinlint');
 386         }
 387     };
 388
 389     /**
 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.
 392      *
 393      * If Watchman isn't installed then it falls back to the grunt-contrib-watch file
 394      * watcher for backwards compatibility.
 395      */
 396     tasks.watch = function() {
 397         var watchTaskDone = this.async();
 398         var watchInitialised = false;
 399         var watchTaskQueue = {};
 400         var processingQueue = false;
 401
 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.
 406                 return;
 407             }
 408
 409             processingQueue = true;
 410
 411             // Grab all tasks currently in the queue.
 412             var queueToProcess = watchTaskQueue;
 413             // Reset the queue.
 414             watchTaskQueue = {};
 415
 416             async.forEachSeries(
 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);
 422
 423                     // Spawn the task in a child process so that it doesn't kill this one
 424                     // if it failed.
 425                     grunt.util.spawn(
 426                         {
 427                             // Spawn with the grunt bin.
 428                             grunt: true,
 429                             // Run from current working dir and inherit stdio from process.
 430                             opts: {
 431                                 cwd: cwd,
 432                                 stdio: 'inherit'
 433                             },
 434                             args: [task, filesOption]
 435                         },
 436                         function(err, res, code) {
 437                             if (code !== 0) {
 438                                 // The grunt task failed.
 439                                 grunt.log.error(err);
 440                             }
 441
 442                             // Move on to the next task.
 443                             next();
 444                         }
 445                     );
 446                 },
 447                 function() {
 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();
 453                 }
 454             );
 455         };
 456
 457         var watchConfig = grunt.config.get(['watch']);
 458         watchConfig = Object.keys(watchConfig).reduce(function(carry, key) {
 459             if (key == 'options') {
 460                 return carry;
 461             }
 462
 463             var value = watchConfig[key];
 464             var fileGlobs = value.files;
 465             var taskNames = value.tasks;
 466
 467             taskNames.forEach(function(taskName) {
 468                 carry[taskName] = fileGlobs;
 469             });
 470
 471             return carry;
 472         }, {});
 473
 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.');
 481
 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.
 486                 watchTaskDone(0);
 487             } else {
 488                 grunt.log.error(error);
 489                 // Fatal error.
 490                 watchTaskDone(1);
 491             }
 492         });
 493
 494         watchmanClient.on('subscription', function(resp) {
 495             if (resp.subscription !== 'grunt-watch') {
 496                 return;
 497             }
 498
 499             resp.files.forEach(function(file) {
 500                 grunt.log.ok('File changed: ' + file.name);
 501
 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);
 507                     });
 508                     if (match) {
 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);
 517                             }
 518                         } else {
 519                             watchTaskQueue[task] = [relativePath];
 520                         }
 521                     }
 522                 });
 523             });
 524
 525             processWatchTaskQueue();
 526         });
 527
 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.');
 533             }
 534
 535             process.exit();
 536         });
 537
 538         // Initiate the watch on the current directory.
 539         watchmanClient.command(['watch-project', cwd], function(watchError, watchResponse) {
 540             if (watchError) {
 541                 grunt.log.error('Error initiating watch:', watchError);
 542                 watchTaskDone(1);
 543                 return;
 544             }
 545
 546             if ('warning' in watchResponse) {
 547                 grunt.log.error('warning: ', watchResponse.warning);
 548             }
 549
 550             var watch = watchResponse.watch;
 551             var relativePath = watchResponse.relative_path;
 552             watchInitialised = true;
 553
 554             watchmanClient.command(['clock', watch], function(clockError, clockResponse) {
 555                 if (clockError) {
 556                     grunt.log.error('Failed to query clock:', clockError);
 557                     watchTaskDone(1);
 558                     return;
 559                 }
 560
 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'];
 566                     });
 567
 568                     return ['allof'].concat(fileGlobMatches);
 569                 });
 570
 571                 var sub = {
 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
 577                 };
 578
 579                 if (relativePath) {
 580                     /* eslint-disable camelcase */
 581                     sub.relative_root = relativePath;
 582                 }
 583
 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);
 588                         watchTaskDone(1);
 589                         return;
 590                     }
 591
 592                     grunt.log.ok('Listening for changes to files in ' + cwd);
 593                 });
 594             });
 595         });
 596     };
 597
 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);
 610     }, 200);
 611
 612     grunt.event.on('watch', function(action, filepath) {
 613         changedFiles[filepath] = action;
 614         onChange();
 615     });
 616
 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');
 624
 625     // Rename the grunt-contrib-watch "watch" task because we're going to wrap it.
 626     grunt.renameTask('watch', 'watch-grunt');
 627
 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']);
 636
 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']);
 641
 642     // Register the startup task.
 643     grunt.registerTask('startup', 'Run the correct tasks for the current directory', tasks.startup);
 644
 645     // Register the default task.
 646     grunt.registerTask('default', ['startup']);
 647 };