How to implement gulp packaging using nodejs
因为之前一直有人给我推荐gulp，说他这里好哪里好的。实际上对我来说够用就行。grunt熟悉以后实际上他的配置也不难，说到效率的话确实是个问题，尤其项目大了以后，目前位置遇到的项目都还可以忍受。不过不管怎么说，需要亲自用过gulp之后才能品评他和grunt之间的优劣。
最近换了家新公司，由于是创业公司，项目基本从零开始搭建。工作几年，也没想过写点什么技术性的东西，今天突然心血来潮，哦当然，我这个人总是特别容易心血来潮，不定想干点啥，不说废话了，毕竟上班呢，开小差也不太好。忙了一个月，项目初见雏形，也基本可以1.0上线了，趁着等文案的时间，简单写点gulp打包的东西，等明儿有空再来一篇详细的，再有空再来个webpack的，哎呀，这个有空也不知道是啥时候，莫怪，好像又废话了几句。stop，stop。
从头儿来吧，首先创建一个package.json文件，就npm init一直确认确认确认就好了，构建过程中用到什么就npm什么就好了。做过vue脚手架的小伙伴儿应该知道，脚手架会自动生成一个特别全面的package.json文件，当然我们目前也用不到那么多。不多说了。
为了万一以后添加强大的功能，我们就多做几个文件，就不是仅仅一个gulpfile.js了，当然一个也没问题。
来创建一个gulpfile.config.js来专门放置文件路径引用输出等。就是所谓的src，dist。再来一个gulpfile.xxx.js，名字随便起吧，引用的时候引用对就好了。再来一个gulpfile.js吧，最后要运行啊。
做个最简单例子，以js压缩为例，稍后加上版本哈管理功能，用法都差不多，用什么加什么。
var src_file = './xxxx/'; // 你的源文件目录
var dist_file= './dist/xxxx/'; // 文件处理后你想存放的目录
var config= {
src: src_file,
dist: dist_file,
js: {
src: src_file + 'src/js/**/*.js', // 你的js目录
dist: dist_file + 'src/js', // js文件打包后存放的目录
},
};
module.exports = config;这只是个最简单的小例子，要是有其它的往里加就好了，html，css，img，还有一些静态文件等。
关键的来了，我们把处理方法写在gulpfile.xxx.js里面。
gulpfile.xxx.js：
var gulp = require('gulp');
var rename = require('gulp-rename'); //重命名
var babel = require("gulp-babel");
var uglify = require('gulp-uglify'); //js压缩
var config = require('./gulpfile.config.js');
var runSequence = require('run-sequence');
var rev = require('gulp-rev');//版本号管理的一些东西，先写进来吧，懒的在敲了
var revCollector = require('gulp-rev-collector');
var cssUrl = './dist/xxx/src/css/*.css',
jsUrl = './dist/xxx/src/js/*.js';
function haha() {
gulp.task('js', function () {
return gulp.src(Config.js.src)
.pipe(babel())
.pipe(uglify())
.pipe(gulp.dest(config.js.dist));
});
gulp.task('revJs', function(){
return gulp.src(jsUrl)
.pipe(rev())
.pipe(rev.manifest())
.pipe(gulp.dest('dist/xxx/src/js'));
});
gulp.task('revHtml', function () {
return gulp.src(['dist/xxx/src/js/**/*.json', 'chaohuo/*.html']) /*后面本地html文件的路径，可自行配置*/
.pipe(revCollector(
{ replaceReved:true }
))
.pipe(gulp.dest('dist/chaohuo')); /*Html更换css、js文件版本,和本地html文件的路径一致*/
});
gulp.task('dev', function (done) {
condition = false;
runSequence(
['revJs'],
['revHtml'],
done);});
gulp.task('default', ['js','dev']);
}
module.exports = haha;天啊，我本来想一步步来写清楚点的，没想到一下子把版本号相关的也都写进去了，那就算了吧，一起来吧。
下面是gulpfile.js文件：
var haha= require('./gulpfile.prod.js'); haha();
基本工作已经完成一大半了，还有一个忘记说了。如果你用到了es6语法，千万别忘记配置一个.babelrc文件.
.babelrc内容：
"presets": [
"es2015",
],
"plugins": [
"transform-remove-strict-mode"//这个插件就是添加版本号的关键。
]
}有的小伙伴可能会遇到版本号不断叠加的问题，还记得{ replaceReved:true }这个吗，前面有看一下，记得添加这个。还有最后一步node_modules我们要更改一些代码，来吧，我下的最新的包（如果你用的老的，也是差不多的改法），替换下。
gulp-path里的index.js两个return的东西都改掉：
return modifyFilename(pth, (filename, ext) => `${filename}-${hash}${ext}`);改为return modifyFilename(pth, (filename, ext) => `${filename}${ext}`);
return modifyFilename(pth, (filename, ext) => filename.replace(new RegExp(`-${hash}$`), '') + ext);改为return modifyFilename(pth, (filename, ext) => filename + ext);gulp-rev-collector里的index.js：
大概128行左右
patterns.push( escPathPattern( (path.dirname(key) === '.' ? '' : closeDirBySep(path.dirname(key)) ) )
+ path.basename(key, path.extname(key))
.split('.')
.map(function(part){
return escPathPattern(part) + '(' + opts.revSuffix + ')?';
})
.join('\\.')
+ patternExt
);这段改为
patterns.push( escPathPattern( (path.dirname(key) === '.' ? '' : closeDirBySep(path.dirname(key)) ) + path.basename(key, path.extname(key)) ) + opts.revSuffix + escPathPattern( path.extname(key) ) + "(\\?v=(\\d|[a-z]){8,10})*" );这里相关的也是网上查了很多相关的资料，不过好像都是一些老版本，并且gulp-rev里的文件不用修改，这里也经过多次测试，以上基本可用。
好了，离成功不远了，cmd运行下gulp命令，ok，基本完成，可以去查看下啦！
注意：所有require的东西记得npm安装哦，卡的话就cnpm，不多说。
还有由于很多东西都是手打的，可能会有部分拼写呀，文件路径的错误，记得检查更改哦。
上面是我整理给大家的，希望今后会对大家有帮助。
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