前后端分离+本地服务实时刷新+缓存管理+接口proxy+静态资源增量更新+各种性能优化+上线运维发布——gulp工作流搭建

技巧集：http://www.gulpjs.com.cn/docs/recipes/

其实无非就是利用各种gulp插件、node脚本对项目文件做各种IO操作，只是备忘，需要的话，还是自己重新写最合适。 

1. 一个justwork的多页应用工作流

毛病：如果需要task之间的同步依赖关系，那么上一个task function里面需要有return；各个task的依赖，应该用gulpSequence做拉平。

var gulp = require('gulp'),
    sass = require('gulp-sass'),
    postcss = require('gulp-postcss'),
    autoprefixer = require('autoprefixer'),
    browserSync = require('browser-sync').create(),
    open = require('gulp-open'),
    del = require('del'),
    usemin = require('gulp-usemin'),
    // useref = require('gulp-useref'),// 这个相对目录有问题  妈的 不用了
    zip = require('gulp-zip'),
    gulpRevAll = require('gulp-rev-all'),
    revReplace = require("gulp-rev-replace"),
    uglify = require('gulp-uglify'),
    minifyCss = require('gulp-minify-css'),

    Replace = require('gulp-replace'),
    htmlmin = require('gulp-htmlmin'),
    gulpSequence = require('gulp-sequence'),
    argv = require('yargs').argv; // node命令传入的参数整合参数




/**************************配置项**************************/
var _opt = {
    src: 'app/',
    // src: 'dist/sce/app/',
    // devHost:"sns-operating-dev.sohuno.com",
    // devHost: "dev.w.sohu.com", //默认当前局域网ip
    // startPath: '/view/intro.html',
    startPath: '/view/index.html',

    dest: 'dist/',
    tem: 'tem/',
    revDelay: 5, //单位秒
    staticInCDN: true, //默认放cdn
    cdnPath: '//sns_business.cdn.sohusce.com/square-unlogin-v3/',
    // staticProxyPath: '/h5static/',//需要代理的静态资源路径标记
    sce: {
        // releaseUrl: 'http://fe.w.sohu.com/h5apps/sns-square-test/view/intro.html', //线上或测试环境的项目url
        manageUrl: '//console.sce.sohuno.com/apps/versions?appid=',
        path: 'sce/',
        yamlPath: 'sce/app.yaml',
        appPath: 'sce/app/',
        confPath: 'sce/conf/',
        test: { //暂仅测试环境 这里需要优化配置 gulp发布的时候带上环境参数 如gulp r --test/product
            appId: 212250773,
            sceHost: '//sns-square-unlogin-v30-test.sce.sohuno.com',
            backendHost: {
                'sns-core': 'sns-api.apps.sohuno.com', //sns-data-api-test.sce.sohuno.com sns-api.apps.sohuno.com msapi.t.sohu.com
                // 'sns-data':'sns-data-api-test.sce.sohuno.com'
            }
        },
        product: {
            appId: 985464923,
            sceHost: '//sns-square-unlogin-v30.sce.sohuno.com',
            backendHost: {
                'sns-core': 'sns-api.apps.sohuno.com',
                // 'sns-data':'sns-data.sohuno.com'
            }
        }
    }
};

/**************************本地开发Server**************************/
var _env = _opt.sce[Object.keys(argv)[1]] ? Object.keys(argv)[1] : 'test';
console.log("● serverPath：" + _opt.src);
console.log("● serverEnv：" + _env);

// 静态服务器
gulp.task('serve', ['sass'], function() {
    var proxyMiddleware = require('http-proxy-middleware');
    var proxy = proxyMiddleware(['/sns-core'], {
        target: 'http://' + _opt.sce[_env].backendHost['sns-core'],
        pathRewrite: {
            '^/sns-core/(.*)': '/$1'
        },
        changeOrigin: true,
        headers: {
            host: _opt.sce[_env].backendHost['sns-core'],
            origin: 'http://' + _opt.sce[_env].backendHost['sns-core']
        }
    });


    //禁止开发server的缓存
    var proxyNoCache = function(req, res, next) {
        res.setHeader('CacheControl', 'no-cache');
        res.setHeader('Pragma', 'no-cache');
        res.setHeader('Expires', '-1');
        res.setHeader('ETag', Date.now()); //禁止304
        next();
    }

    browserSync.init({
        server: {
            baseDir: _opt.src //_opt.dest//''//''// _opt.dest,//_opt.dest src
        },
        ui: {
            port: 3030
        },
        host: _opt.devHost, //hosts文件设置代理到开发机IP server种cookie用
        open: "external", //
        startPath: _opt.startPath,
        ghostMode: false, //关掉多设备同步
        middleware: [proxy, proxyNoCache]
    });

    gulp.watch(_opt.src + "/static/scss/*.scss", ['sass']);
    gulp.watch([_opt.src + "/static/js/**",
        _opt.src + "/static/img/**",
        _opt.src + "/**/*.html"
    ]).on('change', browserSync.reload);
});


// gulp.task('rrr', function() {
//     return gulp.src([_opt.src + "/static/scss/sns-base.scss"], {
//             base: _opt.src + "/static/scss/"
//         })
//             .pipe(Replace(/
[	u0020]*?//.+?
/g,"

"))
//     .pipe(gulp.dest(_opt.src + "/static/acss/"))
//     });

gulp.task('sass', function() {
    var postPlugins = [
        autoprefixer() //browserlist read from package.json //取值https://github.com/ai/browserslist#queries
    ];
    return gulp.src([_opt.src + "/static/scss/**/*.scss"], {
            base: _opt.src + "/static/scss/"
        })
        // auto append night mode(.night)，color base scss/_const.scss
        // 以后抽象成一个插件
        // 最好的实现不是预先删除注释，而应该是不去替换注释里的夜色才对 @20180119
        // 有个bug 启动的时候可以注掉 修改scss后的reload任务不好使
        // 干掉scss中的注释 避免下面的夜色模式替换 把注释里的也给替换了导致scss结构错乱报错
        .pipe(Replace(/([s;])//.+?(?=
)/g, function(s, m1) {
            //删掉空字符或者;后面的单行注释内容；
            //这个正则引擎 不支持肯定逆序表达式 (?<=[s;])  只能function return m1了
            return m1;
        }))
        .pipe(Replace(//*.+?*//g,''))//删掉块级注释  咦尼玛 这个怎么不好使 见main.css
        //_const.scss中色值变量命名 需遵循规范 $c-grey1:#000; $c-night-grey1:#454545;
        .pipe(Replace(/([w-]+?s*?:.*$c-.+?;)/g, function(s, m1, m2) {
            // console.log('----
'+m1+'
----
');
            var m1_night = m1.replace(/$c-/g, '$c-night-');
            return m1 + '
 @at-root .night &{' + m1_night + '}
';
        }))
        .pipe(sass())
        .on('error', function(err) {
            console.log('Less Error!', err.message);
            this.emit('end');
        })
        .pipe(postcss(postPlugins))
        .pipe(gulp.dest(_opt.src + "/static/css/"))
        .pipe(browserSync.reload({ stream: true }));
});

// gulp.task('openUrl', function() {
//     console.log('----打开sce线上url，fiddler代理至本地');
//     gulp.src(__filename)
//         .pipe(open({ uri: _opt.sce.releaseUrl, app: "chrome" }));
// });

/**************************临时工具处理**************************/
//图片压缩 非尺寸
gulp.task('imgmin1', function() {
    var imagemin = require('gulp-imagemin');
    // gulp.src(_opt.src+'/img/*.+(png)')
    gulp.src(_opt.src + '/static/img/**/*.png', {
            base: _opt.src
        })
        .pipe(imagemin())
        .pipe(gulp.dest(_opt.src));
});


/**************************打包发布正式方案**************************/

gulp.task('delDest', function() {
    // console.log("● 环境："+_env);
    var path = _opt.dest;
    console.log('----清空目录' + path);
    return del(path);
});
gulp.task('tem', ['delDest'], function() {
    var path = _opt.tem;
    console.log('----清空目录' + path);
    return del(path);
});

gulp.task('delTem', function() {
    var path = _opt.tem;
    console.log('----清空目录' + path);
    return del(path);
});
gulp.task('delSceApp', function() {
    var path = _opt.sce.appPath;
    console.log('----清空目录' + path);
    return del(path);
});
// 拷贝文件
gulp.task('copy2tem', ['delDest', 'delTem', 'sass'], function() {
    console.log('----拷贝文件到临时文件夹');
    return gulp.src([
            _opt.src + '/static/**',
            _opt.src + '/view/**',
            '!' + _opt.src + '/static/scss/**'
        ], {
            base: _opt.src
        })
        .pipe(gulp.dest(_opt.tem));
});
// 合并
gulp.task('usemin', ['copy2tem'], function() { //
    return gulp.src([
            _opt.tem + 'view/**/*.html'
        ], {
            base: _opt.tem
        })
        .pipe(usemin({ //成功的先不上报处理了
            jsAttributes: {
                // onload: 'window.srcLoadLog && srcLoadLog(this)',
                onerror: 'window.srcErrorLog && srcErrorLog(this)'
            },
            cssAttributes: {
                // onload: 'window.srcLoadLog && srcLoadLog(this)',
                onerror: 'window.srcErrorLog && srcErrorLog(this)'
            }

        }))
        .pipe(gulp.dest(_opt.tem));
});

//js压缩
gulp.task('jsmin', ['usemin'], function() {
    console.log('----压缩js');
    return gulp.src([
            _opt.tem + '/static/js/**/*.js',
            '!' + _opt.tem + '/static/js/**/*.min.js'
        ], {
            base: _opt.tem
        })
        // .pipe(uglify())
        .pipe(uglify({
            compress: {
                // "quote-keys":true//ie8
                // properties:false,
                drop_console: true
            }
            // quote_keys: true    
            // beautify : { beautify: false, ascii_only: true, quote_keys: true }    
        }))
        .pipe(gulp.dest(_opt.tem));
});
//css压缩
gulp.task('cssmin', ['usemin'], function() {
    console.log('----压缩CSS');
    return gulp.src([
            _opt.tem + '/static/css/**/*.css',
            '!' + _opt.tem + '/static/css/*.min.css'
        ], {
            base: _opt.tem
        })
        .pipe(minifyCss())
        .pipe(gulp.dest(_opt.tem));
});

// 加MD5戳
gulp.task('revAll', ['jsmin', 'cssmin'], function() { //
    console.log('----加MD5戳&替换相互引用(延时' + _opt.revDelay + 's后进行下一任务)');
    // var revAll = new RevAll({
    //     dontRenameFile: [/^/static/img/ad-avatar/]//ad-avatar前端不直接用 手动替换后上传cdn给server下发用
    //     // ,dontGlobal:[]
    //     // ,dontSearchFile:[/^/static/js//]//dontSearchFile 对js/xx/下的路径文件 不做内容中的引用替换处理  
    // });

    gulp.src([_opt.tem + '/*/**'], { ///static/**
            base: _opt.tem
        })
        .pipe(gulpRevAll.revision({
            dontRenameFile: [/^/view//, /^/static/img/ad-avatar/] //ad-avatar前端不直接用 手动替换后上传cdn给server下发用
                // ,dontGlobal:[]
                ,
            dontSearchFile: [/^/static/js//] //dontSearchFile 对js/xx/下的路径文件 不做内容中的引用替换处理  
        }))
        .pipe(gulp.dest(_opt.tem))
        .pipe(gulpRevAll.versionFile())
        .pipe(gulp.dest(_opt.tem))
        .pipe(gulpRevAll.manifestFile())
        .pipe(gulp.dest(_opt.tem));
});

//htmlmin
gulp.task('htmlmin', function() { //
    console.log('----htmlmin');
    return gulp.src([
            _opt.tem + '/**/*.html' // '!'+_opt.dest+'/tpls/write/write.html' 
        ], {
            base: _opt.tem
        })
        .pipe(htmlmin({
            collapseWhitespace: true,
            removeComments: true,
            minifyCSS: true,
            minifyJS: true
        }))
        .pipe(gulp.dest(_opt.tem + '/'));
});
//加cdn前缀
gulp.task('cdnPre', ['htmlmin'], function() {
    if (!_opt.staticInCDN) return false;
    console.log('----加CDN前缀');
    return gulp.src([
            _opt.tem + '/**/*.html'
            // ,_opt.dest + '/static/js/common/myLib.*.js'
        ], {
            base: _opt.tem
        }) //下面日后写成通配符严格匹配 path/**.xxx 上面的js就可以写成all js了
        .pipe(Replace(/"[./]*static//g, '"' + _opt.cdnPath)) //有点风险 日后优化
        .pipe(gulp.dest(_opt.tem + '/'));
});
//imgmin - 这个任务时间太长 依赖建立不起来，r完了还会在压着，所以从gulp 抽成单独一项任务，gulp serve前手动搞
// gulp.task('imgmin',['copy2tem'],  function() {
//     var imagemin = require('gulp-imagemin');
//     // gulp.src(_opt.src+'/img/*.+(png)')
//     gulp.src(_opt.tem + '/static/img/**/*.png', {
//             base: _opt.tem
//         })
//         .pipe(imagemin())
//         .pipe(gulp.dest(_opt.tem));
// });


//拷贝sce基础文件至dist
gulp.task('sce_base2dist', function() {
    console.log('----拷贝sce基础文件到发布目录');
    return gulp.src([
            _opt.sce.path + "/**"
        ], {
            base: _opt.sce.path
        })
        .pipe(gulp.dest(_opt.dest + "/sce"));
});
// 根据环境修改sce appId
gulp.task('sceConfigInit', ['sce_base2dist'], function() {
    console.log('----sce配置初始化');
    // return gulp.src(_opt.sce.yamlPath)
    return gulp.src([
            _opt.dest + _opt.sce.yamlPath,
            _opt.dest + _opt.sce.confPath + '/nginx_server.inc'
        ], {
            base: _opt.dest
        }) //backendHost  下面正则优化 增强匹配的严谨性--这里以后改成写入而不是 替换是不是能好一些
        .pipe(Replace(/appid: d+/, 'appid: ' + _opt.sce[_env].appId))
        .pipe(Replace(/server_sns-core(?=[;/ ])/g, _opt.sce[_env].backendHost['sns-core']))
        .pipe(gulp.dest(_opt.dest));
});


// 拷贝文件
gulp.task('tem2sceDist', ['cdnPre'], function() {
    console.log('----拷贝项目文件到dist/sce目录');
    return gulp.src([
            _opt.tem + "/**",
            '!' + _opt.tem + 'rev-*.json'
        ], {
            base: _opt.tem
        })
        .pipe(gulp.dest(_opt.dest + _opt.sce.appPath));
});
// 静态资源压缩zip for cdn
gulp.task('static2zip', ['cdnPre'], function() {
    if (!_opt.staticInCDN) return false;
    console.log('----静态资源to zip for cdn');
    var cdn_project_name = 'toCDN_' + _opt.cdnPath.match(///(.+?).cdn/)[1] + '_' + _opt.cdnPath.replace(/.+.com//, "").replace(///g, "") + ".zip";
    // var cdn_project_name = 'toCDN_' + _opt.staticProxyPath.replace(///g, "") + ".zip";
    return gulp.src([
            _opt.tem + '/static/**'
        ], {
            base: _opt.tem + '/static/'
        })
        .pipe(zip(cdn_project_name))
        .pipe(gulp.dest(_opt.dest)); //剔除rev map文件、zip打包文件  需要优化
});

// sce项目zip
gulp.task('sce2zip', ['tem2sceDist', 'sceConfigInit'], function() {
    console.log('----sce to zip');
    var zip_name = 'sce_' + _opt.sce[_env].appId + '.zip';
    return gulp.src([_opt.dest + _opt.sce.path + '/**'])
        .pipe(zip(zip_name))
        .pipe(gulp.dest(_opt.dest));
});

//发布
gulp.task('packContinue', ['sce2zip', 'static2zip'], function() {
    console.log('----清除临时文件');
    // 清除临时文件
    del(_opt.tem);
    console.log('● 环境：' + _env);
    console.log('● 前端项目已发布到' + _opt.dest);
    if (_opt.staticInCDN) console.log('○ 静态资源zip请上传至：' + _opt.cdnPath);
    console.log('○ sce zip请上传至：' + _opt.sce.manageUrl + _opt.sce[_env].appId);
    console.log('● sce前端服务host：' + _opt.sce[_env].sceHost);

    console.log('----完成！');
});
// 发布-cdn
gulp.task('r', ['revAll'], function(cb) {
    // console.log("----环境："+_env);
    setTimeout(function() { //延时太挫 待优化 https://github.com/gulpjs/gulp/issues/96
        gulpSequence('packContinue', cb);
    }, _opt.revDelay * 1000); //revAll 延时
});
// 发布-local
gulp.task('r:local', ['revAll'], function(cb) {
    _opt.staticInCDN = false;
    // console.log("----环境："+_env);
    setTimeout(function() { //延时太挫 待优化 https://github.com/gulpjs/gulp/issues/96
        gulpSequence('packContinue', cb);
    }, _opt.revDelay * 1000); //revAll 延时
});

2. 优化迭代了多个版本的比较完美的脚手架

优点：模块化拆分、回调拉平、功能配置化

let gulp = require('gulp'),
    config = require('./config.js'),
    del = require('del'),
    requireDir = require('require-dir'),
    chalk = require('chalk'),
    runSequence = require('run-sequence');

console.log('Waiting For Gulp Tasks Loading ...' + '
');

let {
    NODE_ENV: env,
    CDN: cdn
} = process.env;

// 递归引入gulp/tasks目录下的文件，该操作比较耗时(稍弱些的机器配置 14s左右)
requireDir('./gulp/tasks', {
    recurse: true
});

if (env !== 'dev') {
    console.log('

/***********************    打包开始，当前环境为：' + chalk.blue.bold(env) + '    ***********************/' + '
');
}
gulp.task('build', function(cb) { //默认不放 CDN
    del.sync(config.temp);
    del.sync(config.dist);
    runSequence(['svg'], ['eslint', 'ES6', 'imgMin', 'fileInclude', 'sceInit'], ['sass'], ['uncss'], ['sprite'],['jscss2dist'], ['usemin'], ['cssmin', 'jsmin', 'htmlmin'], ['revision'], ['cdnPre'], ['delRedundant'], ['zip'], ['openUrl'], function() {
        if (cdn === 'true') console.log('○ 静态资源zip请上传至：' + config.cdnPath);
        console.log('○ sce zip请上传至：' + config.sce.manageUrl + config.sce[env].appId);
        console.log('

/***********************    打包结束，当前环境为：' + chalk.blue.bold(env) + '    ***********************/' + '
');
    });
})

//不做jscss合并等工作 直接打包
gulp.task('build:dev', function(cb) { 
    del.sync(config.temp);
    del.sync(config.dist);
    runSequence(['svg'], ['eslint', 'ES6', 'imgMin', 'fileInclude', 'sceInit'], ['sass'], ['sprite'],'temp2dist', ['zip'], ['openUrl'], function() {
        if (cdn === 'true') console.log('○ 静态资源zip请上传至：' + config.cdnPath);
        console.log('○ sce zip请上传至：' + config.sce.manageUrl + config.sce[env].appId);
        console.log('

/***********************    打包结束[纯开发包]，当前环境为：' + chalk.blue.bold(env) + '    ***********************/' + '
');
    });
})



gulp.task('dev', function(cb) {
    del.sync(config.temp);
    config.buryPointSwitch = false;
    config.isImgOptmize = false;
    runSequence(['svg'], ['fileInclude', 'eslint', 'ES6', 'imgMin'], ['sass'], ['sprite'], ['dev-server'], cb);
});

//打包到dist 且启动目录改到dist（用来本地测试打包后的页面运行 注：需要去dev-server改一下serverPath）
gulp.task('dev:dist', function(cb) {
    del.sync(config.temp);
    config.buryPointSwitch = false;
    config.isImgOptmize = false;
    // runSequence(['svg'], ['eslint', 'ES6', 'imgMin', 'fileInclude', 'sceInit'], ['sass'], ['sprite'],'temp2dist', ['dev-server'], cb);
    runSequence( ['delRedundant'], ['svg'], ['eslint', 'ES6', 'imgMin', 'fileInclude', 'sceInit'], ['sass'], ['uncss'], ['sprite'], ['usemin'], ['cssmin', 'jsmin', 'htmlmin'], ['revision'],'dev-server', cb);
});