sp-dev-fx-webparts/samples/react-calendar/gulpfile.js

'use strict';

// check if gulp dist was called
if (process.argv.indexOf('dist') !== -1) {
    // add ship options to command call
    process.argv.push('--ship');
}

const path = require('path');
const gulp = require('gulp');
const build = require('@microsoft/sp-build-web');
const gulpSequence = require('gulp-sequence');

build.addSuppression(`Warning - [sass] The local CSS class 'ms-Grid' is not camelCase and will not be type-safe.`);

var getTasks = build.rig.getTasks;
build.rig.getTasks = function () {
  var result = getTasks.call(build.rig);

  result.set('serve', result.get('serve-deprecated'));

  return result;
};

// Create clean distrubution package
gulp.task('dist', gulpSequence('clean', 'bundle', 'package-solution'));
// Create clean development package
gulp.task('dev', gulpSequence('clean', 'bundle', 'package-solution'));

/**
 * Webpack Bundle Anlayzer
 * Reference and gulp task
 */
const bundleAnalyzer = require('webpack-bundle-analyzer');

build.configureWebpack.mergeConfig({

    additionalConfiguration: (generatedConfiguration) => {
        const lastDirName = path.basename(__dirname);
        const dropPath = path.join(__dirname, 'temp', 'stats');
        generatedConfiguration.plugins.push(new bundleAnalyzer.BundleAnalyzerPlugin({
            openAnalyzer: false,
            analyzerMode: 'static',
            reportFilename: path.join(dropPath, `${lastDirName}.stats.html`),
            generateStatsFile: true,
            statsFilename: path.join(dropPath, `${lastDirName}.stats.json`),
            logLevel: 'error'
        }));

        return generatedConfiguration;
    }

});


/**
 * StyleLinter configuration
 * Reference and custom gulp task
 */
const stylelint = require('gulp-stylelint');

/* Stylelinter sub task */
let styleLintSubTask = build.subTask('stylelint', (gulp) => {

    return gulp
        .src('src/**/*.scss')
        .pipe(stylelint({
            failAfterError: false,
            reporters: [{
                formatter: 'string',
                console: true
            }]
        }));
});
/* end sub task */

build.rig.addPreBuildTask(styleLintSubTask);

/**
 * Custom Framework Specific gulp tasks
 */


build.initialize(gulp);
build.sass.setConfig({ warnOnNonCSSModules: false, useCssModules:true});

/**
 * Continuous Integration
 */

const buildConfig = build.getConfig();

const karmaTaskCandidates = buildConfig.uniqueTasks.filter(task => task.name === 'karma');

if (karmaTaskCandidates && karmaTaskCandidates.length > 0) {
    const karmaTask = karmaTaskCandidates[0];
    karmaTask.taskConfig.configPath = './config/karma.config.js';
}