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WorkerDependency.js
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Mon, Feb 10, 14:01

WorkerDependency.js
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/*
MIT License http://www.opensource.org/licenses/mit-license.php
Author Ivan Kopeykin @vankop
*/
"use strict";
const Dependency = require("../Dependency");
const RuntimeGlobals = require("../RuntimeGlobals");
const makeSerializable = require("../util/makeSerializable");
const ModuleDependency = require("./ModuleDependency");
/** @typedef {import("webpack-sources").ReplaceSource} ReplaceSource */
/** @typedef {import("../AsyncDependenciesBlock")} AsyncDependenciesBlock */
/** @typedef {import("../ChunkGraph")} ChunkGraph */
/** @typedef {import("../Dependency").ReferencedExport} ReferencedExport */
/** @typedef {import("../Dependency").UpdateHashContext} UpdateHashContext */
/** @typedef {import("../DependencyTemplate").DependencyTemplateContext} DependencyTemplateContext */
/** @typedef {import("../Entrypoint")} Entrypoint */
/** @typedef {import("../ModuleGraph")} ModuleGraph */
/** @typedef {import("../util/Hash")} Hash */
/** @typedef {import("../util/runtime").RuntimeSpec} RuntimeSpec */
class WorkerDependency extends ModuleDependency {
/**
* @param {string} request request
* @param {[number, number]} range range
*/
constructor(request, range) {
super(request);
this.range = range;
}
/**
* Returns list of exports referenced by this dependency
* @param {ModuleGraph} moduleGraph module graph
* @param {RuntimeSpec} runtime the runtime for which the module is analysed
* @returns {(string[] | ReferencedExport)[]} referenced exports
*/
getReferencedExports(moduleGraph, runtime) {
return Dependency.NO_EXPORTS_REFERENCED;
}
get type() {
return "new Worker()";
}
get category() {
return "worker";
}
}
WorkerDependency.Template = class WorkerDependencyTemplate extends (
ModuleDependency.Template
) {
/**
* @param {Dependency} dependency the dependency for which the template should be applied
* @param {ReplaceSource} source the current replace source which can be modified
* @param {DependencyTemplateContext} templateContext the context object
* @returns {void}
*/
apply(dependency, source, templateContext) {
const { chunkGraph, moduleGraph, runtimeRequirements } = templateContext;
const dep = /** @type {WorkerDependency} */ (dependency);
const block = /** @type {AsyncDependenciesBlock} */ (moduleGraph.getParentBlock(
dependency
));
const entrypoint = /** @type {Entrypoint} */ (chunkGraph.getBlockChunkGroup(
block
));
const chunk = entrypoint.getEntrypointChunk();
runtimeRequirements.add(RuntimeGlobals.publicPath);
runtimeRequirements.add(RuntimeGlobals.baseURI);
runtimeRequirements.add(RuntimeGlobals.getChunkScriptFilename);
source.replace(
dep.range[0],
dep.range[1] - 1,
`/* worker import */ ${RuntimeGlobals.publicPath} + ${
RuntimeGlobals.getChunkScriptFilename
}(${JSON.stringify(chunk.id)}), ${RuntimeGlobals.baseURI}`
);
}
};
makeSerializable(WorkerDependency, "webpack/lib/dependencies/WorkerDependency");
module.exports = WorkerDependency;

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