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WebAssemblyModulesPlugin.js
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Sun, Mar 16, 05:22

WebAssemblyModulesPlugin.js
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/*
MIT License http://www.opensource.org/licenses/mit-license.php
Author Tobias Koppers @sokra
*/
"use strict";
const Generator = require("../Generator");
const WebAssemblyExportImportedDependency = require("../dependencies/WebAssemblyExportImportedDependency");
const WebAssemblyImportDependency = require("../dependencies/WebAssemblyImportDependency");
const { compareModulesByIdentifier } = require("../util/comparators");
const memorize = require("../util/memorize");
const WebAssemblyInInitialChunkError = require("./WebAssemblyInInitialChunkError");
/** @typedef {import("webpack-sources").Source} Source */
/** @typedef {import("../Compiler")} Compiler */
/** @typedef {import("../Module")} Module */
/** @typedef {import("../ModuleTemplate")} ModuleTemplate */
/** @typedef {import("../ModuleTemplate").RenderContext} RenderContext */
const getWebAssemblyGenerator = memorize(() =>
require("./WebAssemblyGenerator")
);
const getWebAssemblyJavascriptGenerator = memorize(() =>
require("./WebAssemblyJavascriptGenerator")
);
const getWebAssemblyParser = memorize(() => require("./WebAssemblyParser"));
class WebAssemblyModulesPlugin {
constructor(options) {
this.options = options;
}
/**
* Apply the plugin
* @param {Compiler} compiler the compiler instance
* @returns {void}
*/
apply(compiler) {
compiler.hooks.compilation.tap(
"WebAssemblyModulesPlugin",
(compilation, { normalModuleFactory }) => {
compilation.dependencyFactories.set(
WebAssemblyImportDependency,
normalModuleFactory
);
compilation.dependencyFactories.set(
WebAssemblyExportImportedDependency,
normalModuleFactory
);
normalModuleFactory.hooks.createParser
.for("webassembly/sync")
.tap("WebAssemblyModulesPlugin", () => {
const WebAssemblyParser = getWebAssemblyParser();
return new WebAssemblyParser();
});
normalModuleFactory.hooks.createGenerator
.for("webassembly/sync")
.tap("WebAssemblyModulesPlugin", () => {
const WebAssemblyJavascriptGenerator = getWebAssemblyJavascriptGenerator();
const WebAssemblyGenerator = getWebAssemblyGenerator();
return Generator.byType({
javascript: new WebAssemblyJavascriptGenerator(),
webassembly: new WebAssemblyGenerator(this.options)
});
});
compilation.hooks.renderManifest.tap(
"WebAssemblyModulesPlugin",
(result, options) => {
const { chunkGraph } = compilation;
const { chunk, outputOptions, codeGenerationResults } = options;
for (const module of chunkGraph.getOrderedChunkModulesIterable(
chunk,
compareModulesByIdentifier
)) {
if (module.type === "webassembly/sync") {
const filenameTemplate =
outputOptions.webassemblyModuleFilename;
result.push({
render: () =>
codeGenerationResults.getSource(
module,
chunk.runtime,
"webassembly"
),
filenameTemplate,
pathOptions: {
module,
runtime: chunk.runtime,
chunkGraph
},
auxiliary: true,
identifier: `webassemblyModule${chunkGraph.getModuleId(
module
)}`,
hash: chunkGraph.getModuleHash(module, chunk.runtime)
});
}
}
return result;
}
);
compilation.hooks.afterChunks.tap("WebAssemblyModulesPlugin", () => {
const chunkGraph = compilation.chunkGraph;
const initialWasmModules = new Set();
for (const chunk of compilation.chunks) {
if (chunk.canBeInitial()) {
for (const module of chunkGraph.getChunkModulesIterable(chunk)) {
if (module.type === "webassembly/sync") {
initialWasmModules.add(module);
}
}
}
}
for (const module of initialWasmModules) {
compilation.errors.push(
new WebAssemblyInInitialChunkError(
module,
compilation.moduleGraph,
compilation.chunkGraph,
compilation.requestShortener
)
);
}
});
}
);
}
}
module.exports = WebAssemblyModulesPlugin;

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