gulp ---攻略一

根据项目需要可能会出连载

项目需要现在用gulp进行js的质量检测、合并、压缩、发布，未来需要进行sass的编译、合并、压缩，html、img的压缩以及md5戳、reload等功能，暂时先测试js的质量检测、合并、压缩、发布功能。

进行本操作时，默认你已经安装好NODE+RUBY+SASS+COMPASS+GULP

步骤一：npm init 新建package.json ,其内容格式如范本

{
  "name": "testGulp",
  "version": "0.0.1",
  "private": true,
  "scripts": {
    "start": "node ./bin/www"
  },
  "dependencies": {
    "express": "~4.12.0",
    "serve-favicon": "~2.2.0",
    "morgan": "~1.5.0",
    "cookie-parser": "~1.3.5",
    "body-parser": "~1.12.0",
    "debug": "~2.1.0",
    "i18n": "^0.5.0",
    "swig": "~1.4.2",
    "request": "^2.53.0",
    "avoscloud-sdk": "^0.5.0",
    "multer": "^0.1.8",
    "qs": "^3.1.0",
    "pagination": "^0.4.3",
    "pagination-api": "^0.1.3",
    "cookie-session": "^1.1.0",
    "formidable": "^1.0.17",
    "fs": "^0.0.2"
  },
  "devDependencies": {
    "babel-cli": "^6.5.1",
    "babel-core": "^6.6.4",
    "babel-preset-es2015": "^6.6.0",
    "gulp": "~3.9.0",
    "gulp-clean": "^0.3.1",
    "gulp-compass": "^2.1.0",
    "gulp-concat": "^2.6.0",
    "gulp-eslint": "^0.13.0",
    "gulp-livereload": "^3.8.1",
    "gulp-minify-css": "^1.1.5",
    "gulp-nodemon": "^2.0.4",
    "gulp-rename": "^1.2.2",
    "gulp-rev": "^4.0.0",
    "gulp-rimraf": "^0.1.1",
    "gulp-ruby-sass": "^1.0.5",
    "gulp-uglify": "^1.2.0",
    "tiny-lr": "^0.1.5",
    "gulp-notify": "^2.2.0"
  }
}

步骤二：新建gulpfile.js 其内容格式如范本

var gulp = require('gulp'),
    livereload = require('gulp-livereload'),
    sass = require('gulp-ruby-sass'),
    fs= require('fs');
  var uglify = require('gulp-uglify'),
        concat2 = require('gulp-concat');
        rename = require('gulp-rename');

gulp.task('sass', function () {
  return sass('./public/sass/')
    .pipe(gulp.dest('./public/css'))
    .pipe(livereload());
});
gulp.task('greet', function () {
   console.log('Hello world! Never Bug!');
});

gulp.task('commoncss', function() {
     return gulp.src(['./public/sass/header.scss','./public/sass/footer.scss'])
     .pipe(concat2('main.scss'))
     .pipe(rename('common.min.css'))
     .pipe(gulp.dest('assets/css/'));
  });　　

gulp.task('default', [
    'sass',
    'watch'
  ]);

步骤三：如gulp任务commoncss cmd里输入gulp commoncss 在目标生成的文件夹里可以看到我们合并的文件