| Path : /var/www/html/infraai.ai/frontend/node_modules/webpack/lib/web/ |
|
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| Current File : /var/www/html/infraai.ai/frontend/node_modules/webpack/lib/web/FetchCompileWasmPlugin.js |
/*
MIT License http://www.opensource.org/licenses/mit-license.php
Author Tobias Koppers @sokra
*/
"use strict";
const { WEBASSEMBLY_MODULE_TYPE_SYNC } = require("../ModuleTypeConstants");
const RuntimeGlobals = require("../RuntimeGlobals");
const WasmChunkLoadingRuntimeModule = require("../wasm-sync/WasmChunkLoadingRuntimeModule");
/** @typedef {import("../Chunk")} Chunk */
/** @typedef {import("../Compiler")} Compiler */
/**
* Options that influence how synchronous WebAssembly modules are emitted for
* the fetch-based wasm loading runtime.
* @typedef {object} FetchCompileWasmPluginOptions
* @property {boolean=} mangleImports mangle imports
*/
const PLUGIN_NAME = "FetchCompileWasmPlugin";
/**
* Enables synchronous WebAssembly chunk loading that fetches `.wasm` files and
* compiles them in browser-like environments.
*/
class FetchCompileWasmPlugin {
/**
* Stores options that affect generated synchronous WebAssembly runtime code.
* @param {FetchCompileWasmPluginOptions=} options options
*/
constructor(options = {}) {
/** @type {FetchCompileWasmPluginOptions} */
this.options = options;
}
/**
* Registers compilation hooks that attach the fetch-based synchronous wasm
* runtime module to chunks containing sync WebAssembly modules.
* @param {Compiler} compiler the compiler instance
* @returns {void}
*/
apply(compiler) {
compiler.hooks.thisCompilation.tap(PLUGIN_NAME, (compilation) => {
const globalWasmLoading = compilation.outputOptions.wasmLoading;
/**
* Determines whether the chunk should load synchronous WebAssembly
* binaries through the `fetch` backend.
* @param {Chunk} chunk chunk
* @returns {boolean} true, if wasm loading is enabled for the chunk
*/
const isEnabledForChunk = (chunk) => {
const options = chunk.getEntryOptions();
const wasmLoading =
options && options.wasmLoading !== undefined
? options.wasmLoading
: globalWasmLoading;
return wasmLoading === "fetch";
};
/**
* Generates the runtime expression that downloads the emitted wasm
* binary for a module.
* @param {string} path path to the wasm file
* @returns {string} code to load the wasm file
*/
const generateLoadBinaryCode = (path) =>
`fetch(${RuntimeGlobals.publicPath} + ${path})`;
compilation.hooks.runtimeRequirementInTree
.for(RuntimeGlobals.ensureChunkHandlers)
.tap(PLUGIN_NAME, (chunk, set, { chunkGraph }) => {
if (!isEnabledForChunk(chunk)) return;
if (
!chunkGraph.hasModuleInGraph(
chunk,
(m) => m.type === WEBASSEMBLY_MODULE_TYPE_SYNC
)
) {
return;
}
set.add(RuntimeGlobals.moduleCache);
set.add(RuntimeGlobals.publicPath);
compilation.addRuntimeModule(
chunk,
new WasmChunkLoadingRuntimeModule({
generateLoadBinaryCode,
supportsStreaming: true,
mangleImports: this.options.mangleImports,
runtimeRequirements: set
})
);
});
});
}
}
module.exports = FetchCompileWasmPlugin;