环境 npm install gulp@3.9.0 --save-dev npm install gulp-babel@7 babel-core babel-preset-es2015 --save-dev 新建 gulpfile.js 文件 const gulp = require('gulp'); const uglify = require('gulp-uglify'); const babel = require('gulp-babel'); gulp.task('default',function(){ /////找到文件 gulp.src('./a.js') //////把ES6代码转成ES5代码 .pipe(babel()) /////压缩文件 .pipe(uglify())