vue hello world项目
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/*
MIT License http://www.opensource.org/licenses/mit-license.php
Author Tobias Koppers @sokra
*/
"use strict";
const RuntimeGlobals = require("../RuntimeGlobals");
const StartupChunkDependenciesPlugin = require("../runtime/StartupChunkDependenciesPlugin");
/** @typedef {import("../Compiler")} Compiler */
class CommonJsChunkLoadingPlugin {
constructor(options) {
options = options || {};
this._asyncChunkLoading = options.asyncChunkLoading;
}
/**
* Apply the plugin
* @param {Compiler} compiler the compiler instance
* @returns {void}
*/
apply(compiler) {
const ChunkLoadingRuntimeModule = this._asyncChunkLoading
? require("./ReadFileChunkLoadingRuntimeModule")
: require("./RequireChunkLoadingRuntimeModule");
const chunkLoadingValue = this._asyncChunkLoading
? "async-node"
: "require";
new StartupChunkDependenciesPlugin({
chunkLoading: chunkLoadingValue,
asyncChunkLoading: this._asyncChunkLoading
}).apply(compiler);
compiler.hooks.thisCompilation.tap(
"CommonJsChunkLoadingPlugin",
compilation => {
const globalChunkLoading = compilation.outputOptions.chunkLoading;
const isEnabledForChunk = chunk => {
const options = chunk.getEntryOptions();
const chunkLoading =
options && options.chunkLoading !== undefined
? options.chunkLoading
: globalChunkLoading;
return chunkLoading === chunkLoadingValue;
};
const onceForChunkSet = new WeakSet();
const handler = (chunk, set) => {
if (onceForChunkSet.has(chunk)) return;
onceForChunkSet.add(chunk);
if (!isEnabledForChunk(chunk)) return;
set.add(RuntimeGlobals.moduleFactoriesAddOnly);
set.add(RuntimeGlobals.hasOwnProperty);
compilation.addRuntimeModule(
chunk,
new ChunkLoadingRuntimeModule(set)
);
};
compilation.hooks.runtimeRequirementInTree
.for(RuntimeGlobals.ensureChunkHandlers)
.tap("CommonJsChunkLoadingPlugin", handler);
compilation.hooks.runtimeRequirementInTree
.for(RuntimeGlobals.hmrDownloadUpdateHandlers)
.tap("CommonJsChunkLoadingPlugin", handler);
compilation.hooks.runtimeRequirementInTree
.for(RuntimeGlobals.hmrDownloadManifest)
.tap("CommonJsChunkLoadingPlugin", handler);
compilation.hooks.runtimeRequirementInTree
.for(RuntimeGlobals.baseURI)
.tap("CommonJsChunkLoadingPlugin", handler);
compilation.hooks.runtimeRequirementInTree
.for(RuntimeGlobals.externalInstallChunk)
.tap("CommonJsChunkLoadingPlugin", handler);
compilation.hooks.runtimeRequirementInTree
.for(RuntimeGlobals.onChunksLoaded)
.tap("CommonJsChunkLoadingPlugin", handler);
compilation.hooks.runtimeRequirementInTree
.for(RuntimeGlobals.ensureChunkHandlers)
.tap("CommonJsChunkLoadingPlugin", (chunk, set) => {
if (!isEnabledForChunk(chunk)) return;
set.add(RuntimeGlobals.getChunkScriptFilename);
});
compilation.hooks.runtimeRequirementInTree
.for(RuntimeGlobals.hmrDownloadUpdateHandlers)
.tap("CommonJsChunkLoadingPlugin", (chunk, set) => {
if (!isEnabledForChunk(chunk)) return;
set.add(RuntimeGlobals.getChunkUpdateScriptFilename);
set.add(RuntimeGlobals.moduleCache);
set.add(RuntimeGlobals.hmrModuleData);
set.add(RuntimeGlobals.moduleFactoriesAddOnly);
});
compilation.hooks.runtimeRequirementInTree
.for(RuntimeGlobals.hmrDownloadManifest)
.tap("CommonJsChunkLoadingPlugin", (chunk, set) => {
if (!isEnabledForChunk(chunk)) return;
set.add(RuntimeGlobals.getUpdateManifestFilename);
});
}
);
}
}
module.exports = CommonJsChunkLoadingPlugin;