gulp处理LESS，以及js压缩

{
  "name": "YESCMSs",
  "version": "1.0.0",
  "description": "An ASP.NET Core application for getting started with Less",
  "main": "index.js",
  "scripts": {
    "test": "echo \"Error: no test specified\" && exit 1"
  },
  "private": true,
  "keywords": [
    "aspnetcore",
    "less"
  ],
  "author": "anuraj",
  "license": "MIT",
  "devDependencies": {
    "gulp": "3.9.1",
    "gulp-clean-css": "3.9.0",
    "gulp-less": "3.3.2",
    "gulp-utf8-convert": "^0.0.7",
    "gulp-watch": "^5.0.1"
  }
}

var gulp = require("gulp"),
    watch = require('gulp-watch'),
    cleanCss = require("gulp-clean-css"),
    less = require("gulp-less"),
    utf8Convert = require('gulp-utf8-convert'),
    // 获取 uglify 模块（用于压缩 JS）
    uglify = require('gulp-uglify');


gulp.task("less", function () {
    return gulp.src('wwwroot/less/*.less')
        .pipe(less())
        .pipe(utf8Convert())
        .pipe(cleanCss({ compatibility: 'ie8' }))
        .pipe(gulp.dest('wwwroot/css'));
});
// 压缩 js 文件
// 在命令行使用 gulp script 启动此任务
gulp.task('script', function () {
    // 1\. 找到文件
    gulp.src('wwwroot/js-source/*.js')
        // 2\. 压缩文件
        .pipe(uglify())
        // 3\. 另存压缩后的文件
        .pipe(gulp.dest('wwwroot/js'))
})

// 文件发生变化的时候，自动处理
gulp.task('watch:less', function () {
    return watch('wwwroot/less/*.less', function () {
        gulp.start('less');	//执行html任务
/*        browserSync.reload(); //刷新浏览器*/
    });
});
gulp.task('watch:script', function () {
    return watch('wwwroot/js-source/*.js', function () {
        gulp.start('script');	//执行html任务
        /*        browserSync.reload(); //刷新浏览器*/
    });
});
gulp.task("watch", function () {
    gulp.start('watch:less', 'watch:script')
});


//parallel()将任务功能和/或组合操作组合成同时执行的较大操作。
gulp.task("default", function () {
    gulp.start('less', 'script')
});