处理js

转es5语法

$_> npm i -D gulp-babel@7.0.1 babel-preset-es2015  babel-core
'use strict';
let gulp = require('gulp');
let del = require('del');
let babel = require('gulp-babel');


gulp.task("default", function () {
    return gulp.src("./js/*.js")
      .pipe(babel())
      .pipe(gulp.dest("dist"));
});

提供es6方法

$_> npm i -D  babel-polyfill

// index.js
require('babel-polyfill');

打包js

$_> npm i -D browserify vinyl-source-stream vinyl-buffer gulp-sourcemaps babelify@8 gulp-babel@7.0.1 babel-preset-es2015  babel-core
'use strict';
var gulp = require("gulp");
var browserify = require("browserify");
var source = require('vinyl-source-stream');
var buffer = require('vinyl-buffer');
let babelify = require('babelify');



gulp.task("default", function () {
    return browserify({
        entries: "./src/js/index.js",
    })
    .transform(['babelify'])
    .bundle()
    .pipe(source("index.js"))
    .pipe(buffer())
    .pipe(gulp.dest("./dist"));
});

// .babelrc
{
    "presets": ["es2015"]
}