qoopido.nucleus/gulp/tasks/dist.js

Lightweight, atomic and modular JavaScript utility library that strongly encourages the creation and usage of small yet flexible, reusable and easily maintainable modules.

var id         = 'dist',
	gulp       = require('gulp'),
	pump       = require('pump'),
	del        = require('del'),
	path       = require('path'),
	plugins    = require('gulp-load-plugins')(),
	livereload = require('gulp-livereload'),
	config     = require('../config'),
	settings   = config.tasks[id];

function watch() {
	livereload.listen();

	return gulp.watch(settings.watch, gulp.series(id + ':lint', id + ':build'))
		.on('unlink', function(file) {
			/*
			var relpath  = path.relative(path.resolve('src'), file),
				resolved = path.resolve('build', relpath);

			console.log(file, relpath, resolved);
			*/
			//del.sync(resolved);
		});
}

function lint() {
	return gulp.src(settings.watch)
		.pipe(plugins.eslint())
		.pipe(plugins.eslint.format())
		.pipe(plugins.eslint.failAfterError())
		.pipe(plugins.size(config.settings.size));
}

function clean() {
	return del(settings.clean, { force: true });
}

function build(done) {
	pump([
		gulp.src(settings.process || settings.watch),
		// beautify
		plugins.include(config.settings.include),
		plugins.injectVersion({ prepend: '', replace: '{{package.version}}' }),
		// generate minified
		plugins.sourcemaps.init({ largeFile: true }),
		plugins.terser({
			ecma: 5,
			compress: {
				'passes':  5,
				'typeofs': false
			}
		}),
		plugins.header(config.banner),
		plugins.chmod(config.permissions),
		plugins.size(config.settings.size),
		plugins.sourcemaps.write('.'),
		gulp.dest(settings.dest),
		plugins.touchFd()
	], function() {
		livereload.reload();
		done();
	});
}

gulp.task(id + ':watch', watch);
gulp.task(id + ':lint', lint);
gulp.task(id + ':clean', clean);
gulp.task(id + ':build', build);
gulp.task(id, gulp.series(id + ':lint', id + ':clean', id + ':build'));