如何从构建中删除Webpack代码?

时间:2019-05-13 17:05:56

标签: webpack

我有一些简单的代码,如下所示:

let add = (a,b) => a+b
console.log(add(2,6))

,但是在Webpack处理完之后,添加了Webpacks需要但我没有的一些代码,文件大小增加到大约6.5kb。这会占用一些空间并降低性能,并使我的代码更复杂

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我试图将optimization.runtimeChunk设置为true,但它仅将代码分为两部分:app.js和runtime〜app.js

optimization: {
    minimize: true,
    runtimeChunk: true,

    splitChunks: {
        chunks: 'all'
    }
  }

我还尝试为我的js输出创建另一个入口点,但是它仍然添加了一些不需要的代码,但现在没有那么多了

entry: {
    app: PATHS.src,
    common: `${PATHS.src}/js/common.js`
}
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如果我尝试同时添加新的块并将optimization.runtimeChunk设置为true,则会得到以下信息:

// common.js
(window.webpackJsonp=window.webpackJsonp||[]).push([[1],{5:function(o,n){console.log(2+6)}},[[5,3]]]);

// runtime~common.js
!function(e){function r(r){for(var n,f,i=r[0],l=r[1],a=r[2],c=0,s=[];c<i.length;c++)f=i[c],o[f]&&s.push(o[f][0]),o[f]=0;for(n in l)Object.prototype.hasOwnProperty.call(l,n)&&(e[n]=l[n]);for(p&&p(r);s.length;)s.shift()();return u.push.apply(u,a||[]),t()}function t(){for(var e,r=0;r<u.length;r++){for(var t=u[r],n=!0,i=1;i<t.length;i++){var l=t[i];0!==o[l]&&(n=!1)}n&&(u.splice(r--,1),e=f(f.s=t[0]))}return e}var n={},o={3:0},u=[];function f(r){if(n[r])return n[r].exports;var t=n[r]={i:r,l:!1,exports:{}};return e[r].call(t.exports,t,t.exports,f),t.l=!0,t.exports}f.m=e,f.c=n,f.d=function(e,r,t){f.o(e,r)||Object.defineProperty(e,r,{enumerable:!0,get:t})},f.r=function(e){"undefined"!=typeof Symbol&&Symbol.toStringTag&&Object.defineProperty(e,Symbol.toStringTag,{value:"Module"}),Object.defineProperty(e,"__esModule",{value:!0})},f.t=function(e,r){if(1&r&&(e=f(e)),8&r)return e;if(4&r&&"object"==typeof e&&e&&e.__esModule)return e;var t=Object.create(null);if(f.r(t),Object.defineProperty(t,"default",{enumerable:!0,value:e}),2&r&&"string"!=typeof e)for(var n in e)f.d(t,n,function(r){return e[r]}.bind(null,n));return t},f.n=function(e){var r=e&&e.__esModule?function(){return e.default}:function(){return e};return f.d(r,"a",r),r},f.o=function(e,r){return Object.prototype.hasOwnProperty.call(e,r)},f.p="/";var i=window.webpackJsonp=window.webpackJsonp||[],l=i.push.bind(i);i.push=r,i=i.slice();for(var a=0;a<i.length;a++)r(i[a]);var p=l;t()}([]);

据我了解,runtime〜文件包含一些我不需要的运行时信息,但我仍然无法完全摆脱该Webpack代码

所以:

  1. 该Webpack代码有什么作用?
  2. 为什么生成它?
  3. 我如何摆脱它?

1 个答案:

答案 0 :(得分:0)

该代码为require() / import实现了模块系统。

如果您不使用它们,那么使用Webpack可能毫无意义。

如果是,则需要该代码。