build.js

const gulp = require('gulp');

const argv = require('yargs').argv;
const Constants = require('../constants');
const del = require('del');
const fs = require('fs');
const path = require('path');
const runSequence = require('run-sequence');
const template = require('gulp-template');

gulp.task('build', function(callback) {
    const task = ['build-demo', 'post-cleanup'];

    if (argv.release) {
        task.push('minimize-css');
    }

    runSequence(
        'clean-dist',
        [
            'build-css',
            'copy-ckeditor',
            'copy-languages',
            'copy-svgs'
        ],
        task,
        callback
    );
});

gulp.task('clean-dist', function(callback) {
    del(Constants.distFolder, {force: true}).then(function() {
        callback();
    });
});

gulp.task('build-demo', function() {
    var templateHead;

    if (argv.release) {
        templateHead = 'head-release.template';
    } else {
        templateHead = 'head-dev.template';
    }

    return gulp.src([
            path.join('./demo', 'index.html')
        ])
        .pipe(template({
            resources: fs.readFileSync(path.join('./template', templateHead)).toString()
        }))
        .pipe(gulp.dest(path.join(Constants.distFolder)));
});

gulp.task('copy-ckeditor', function() {
    return gulp.src(path.join(Constants.rootDir, 'lib', 'ckeditor', '/**'))
        .pipe(gulp.dest(Constants.editorDistFolder));
});

gulp.task('post-cleanup', function(callback) {
    del([
        path.join(Constants.editorDistFolder, 'adapters'),
        path.join(Constants.editorDistFolder, 'CHANGES.md'),
        path.join(Constants.editorDistFolder, 'samples')
    ], {force: true}).then(function() {
        callback();
    });
});