问题描述
我正在编写一个带有一些 WebPack 插件的 Angular Builder,我遇到的问题是我的构建后的块包括以下自执行子模块:==> [[0,"runtime"]]]) ;
(window["webpackJsonp"] = window["webpackJsonp"] || []).push([["chunk-name"],{
0: (function(module,exports,__webpack_require__) {
module.exports = __webpack_require__("chunk1-main-module");
}),"chunk1-main-module": (function(module,__webpack_require__) {
//... exports of main modules...
}),"other-modules": (function(module,__webpack_require__) {
//... exports of main module...
})
},[[0,"runtime"]]]);
在所有情况下,我都需要从延迟模块列表中删除运行时块,使其看起来像这样 ==> [[0]]]);
此外,下面的代码可以通过 selfExecute 标记使块不可自执行,如果为真,则将 chunk.entryModule 分配给 undefined。
export class ChunkIdplugin {
constructor(private selfExecute: boolean = false) { }
public apply = (compiler: Compiler): void =>
compiler.hooks.compilation.tap("ChunkIdplugin",this.beforeChunkIds);
private beforeChunkIds = (compilation: compilation.Compilation): void =>
compilation.hooks.beforeChunkIds.tap("ChunkIdplugin",this.iterateChunks);
private iterateChunks = (chunks: compilation.Chunk[]): void => {
const chunk = chunks.find(_ => _.name === 'main');
if (!chunk) return;
chunk.id = this.chunkId as any;
// If scenario demand that chunk doesn't self-execute assign the chunk.entryModule to undefined
(!this.selfExecute || chunk._groups.size < 1) && (chunk.entryModule = undefined);
// Loop through chunks and remove runtime chunk from compilation
for (let group of chunk._groups) {
const chunk = group.chunks.find(_ => _.name === 'runtime');
if (chunk) { chunk.remove(); break; }
}
}
}
在需要自执行的多个块上运行此插件后,WebPack 运行时将有多个 id 为“0”的块,这会导致冲突。
所以我的问题是如何修改这个插件,使延迟模块指向一个特定的子模块而不是“0”以避免冲突,如下:注意最后一行 ==> },[["chunk1-主模块"]]]);而不是“0”
(window["webpackJsonp"] = window["webpackJsonp"] || []).push([["chunk-name"],[["chunk1-main-module"]]]);
解决方法
由于以下 WebPack 插件 webpack-remove-empty-js-chunks-plugin
的代码,我找到了解决问题的更好方法我正在删除运行时 ==> [[0,"runtime"]]]);通过迭代 chunk._groups 从延迟模块中找到运行时块。这有助于将其从延迟模块列表中删除,但不会删除实际的运行时块。我曾经在构建后从 dist 文件夹中删除它。
相反,我使用以下插件从构建资产中删除运行时块:
import { Compiler,compilation } from "webpack";
export class RuntimeRemoverPlugin {
constructor() { }
public apply = (compiler: Compiler): void =>
compiler.hooks.emit.tap("RuntimeRemoverPlugin",this.onEmit);
private onEmit = (compilation: compilation.Compilation): void => {
compilation.chunks.splice(compilation.chunks.findIndex(_ => _.id === 'runtime' || _.name === 'runtime'),1);
Object.keys(compilation.assets)
.filter(_ => _.startsWith('runtime'))
.forEach(_ => delete compilation.assets[_]);
}
}
至于避免引入具有相同 ID“0”的模块的多个块之间的冲突的另一个问题,我正在使用以下插件:
import { compilation,Compiler } from "webpack";
export class PostModuleIdPlugin {
constructor(private chunkId: string) { }
public apply = (compiler: Compiler): void =>
compiler.hooks.compilation.tap("PostModuleIdPlugin",this.afterModuleIds);
private afterModuleIds = (compilation: compilation.Compilation): void =>
compilation.hooks.afterOptimizeModuleIds.tap("PostModuleIdPlugin",this.iterateModules);
private iterateModules = (modules: compilation.Module[]): void => {
modules.forEach((_module: compilation.Module) => {
if (_module.id === 0) _module.id = `${this.chunkId}__entry`;
});
}
}
最终输出块:
(window["webpackJsonp"] = window["webpackJsonp"] || []).push([["chunk_name"],{
"chunk_name__module-a": (function (module,__webpack_exports__,__webpack_require__) {
...
}),"chunk_name__entry": (function (module,exports,__webpack_require__) {
module.exports = __webpack_require__("chunk_name__module-a");
}),},[["chunk_name__entry"]]]);
想分享答案,因为在网上很难找到 WebPack 解决方案。
谢谢!