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StartupChunkDependenciesPlugin.js
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Wed, Feb 19, 11:16

StartupChunkDependenciesPlugin.js
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/*
MIT License http://www.opensource.org/licenses/mit-license.php
*/
"use strict";
const RuntimeGlobals = require("../RuntimeGlobals");
const StartupChunkDependenciesRuntimeModule = require("./StartupChunkDependenciesRuntimeModule");
const StartupEntrypointRuntimeModule = require("./StartupEntrypointRuntimeModule");
/** @typedef {import("../Compiler")} Compiler */
class StartupChunkDependenciesPlugin {
constructor(options) {
this.chunkLoading = options.chunkLoading;
this.asyncChunkLoading =
typeof options.asyncChunkLoading === "boolean"
? options.asyncChunkLoading
: true;
}
/**
* Apply the plugin
* @param {Compiler} compiler the compiler instance
* @returns {void}
*/
apply(compiler) {
compiler.hooks.thisCompilation.tap(
"StartupChunkDependenciesPlugin",
compilation => {
const globalChunkLoading = compilation.outputOptions.chunkLoading;
const isEnabledForChunk = chunk => {
const options = chunk.getEntryOptions();
const chunkLoading =
(options && options.chunkLoading) || globalChunkLoading;
return chunkLoading === this.chunkLoading;
};
compilation.hooks.additionalTreeRuntimeRequirements.tap(
"StartupChunkDependenciesPlugin",
(chunk, set) => {
if (!isEnabledForChunk(chunk)) return;
if (compilation.chunkGraph.hasChunkEntryDependentChunks(chunk)) {
set.add(RuntimeGlobals.startup);
set.add(RuntimeGlobals.ensureChunk);
set.add(RuntimeGlobals.ensureChunkIncludeEntries);
compilation.addRuntimeModule(
chunk,
new StartupChunkDependenciesRuntimeModule(
this.asyncChunkLoading
)
);
}
}
);
compilation.hooks.runtimeRequirementInTree
.for(RuntimeGlobals.startupEntrypoint)
.tap("StartupChunkDependenciesPlugin", (chunk, set) => {
if (!isEnabledForChunk(chunk)) return;
set.add(RuntimeGlobals.ensureChunk);
set.add(RuntimeGlobals.ensureChunkIncludeEntries);
compilation.addRuntimeModule(
chunk,
new StartupEntrypointRuntimeModule(this.asyncChunkLoading)
);
});
}
);
}
}
module.exports = StartupChunkDependenciesPlugin;

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