Gulpfile.js

'use strict';      // eslint-disable-line

/**
 * Gulp file for front-end js check and etc.
 * Date      : 2015/10/21
 * copyright : (c) hustcer
 */

let gulp     = require('gulp'),
    sloc     = require('gulp-sloc2'),
    eslint   = require('gulp-eslint'),
    imagemin = require('gulp-imagemin'),
    pngquant = require('imagemin-pngquant');

gulp.task('check',  () => {

    let src = ['Gulpfile.js', 'star.js', 'lib/**/*.js'];

    return gulp.src(src)
               .pipe(eslint({ configFile: 'eslint.json' }))
               .pipe(eslint.format('stylish'));
});

gulp.task('sloc', () => {

    let src = ['Gulpfile.js', 'star.js', 'lib/**/*.js'];

    gulp.src(src).pipe(sloc());
});

gulp.task('opt',  () => {

    let imgPath = ['snapshot/*'];

    return gulp.src(imgPath)
               .pipe(imagemin({
                       progressive : true,
                       use         : [pngquant()],
                   }))
               .pipe(gulp.dest('snapshot/'));
});

let defaultTasks = ['check', 'opt', 'sloc'];

gulp.task('default', defaultTasks, () => {
    console.log(`---------> All gulp task has been done! Task List: ${defaultTasks}`);
});