1 files changed, 88 insertions, 0 deletions
diff --git a/node_modules/webpack/lib/web/FetchCompileWasmPlugin.js b/node_modules/webpack/lib/web/FetchCompileWasmPlugin.js
new file mode 100644
index 00000000..3bc99ee1
--- /dev/null
+++ b/node_modules/webpack/lib/web/FetchCompileWasmPlugin.js
@@ -0,0 +1,88 @@
+/*
+	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 */
+
+// TODO webpack 6 remove
+
+const PLUGIN_NAME = "FetchCompileWasmPlugin";
+
+/**
+ * @typedef {Object} FetchCompileWasmPluginOptions
+ * @property {boolean} [mangleImports] mangle imports
+ */
+
+class FetchCompileWasmPlugin {
+	/**
+	 * @param {FetchCompileWasmPluginOptions} [options] options
+	 */
+	constructor(options = {}) {
+		this.options = options;
+	}
+
+	/**
+	 * Apply the plugin
+	 * @param {Compiler} compiler the compiler instance
+	 * @returns {void}
+	 */
+	apply(compiler) {
+		compiler.hooks.thisCompilation.tap(PLUGIN_NAME, compilation => {
+			const globalWasmLoading = compilation.outputOptions.wasmLoading;
+			/**
+			 * @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";
+			};
+			/**
+			 * @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) => {
+					if (!isEnabledForChunk(chunk)) return;
+					const chunkGraph = compilation.chunkGraph;
+					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;