1 files changed, 71 insertions, 0 deletions
diff --git a/node_modules/webpack/lib/wasm/WasmFinalizeExportsPlugin.js b/node_modules/webpack/lib/wasm/WasmFinalizeExportsPlugin.js
new file mode 100644
index 00000000..40491a9a
--- /dev/null
+++ b/node_modules/webpack/lib/wasm/WasmFinalizeExportsPlugin.js
@@ -0,0 +1,71 @@
+/*
+	MIT License http://www.opensource.org/licenses/mit-license.php
+	Author Tobias Koppers @sokra
+	*/
+"use strict";
+
+const UnsupportedWebAssemblyFeatureError = require("./UnsupportedWebAssemblyFeatureError");
+
+class WasmFinalizeExportsPlugin {
+	apply(compiler) {
+		compiler.hooks.compilation.tap("WasmFinalizeExportsPlugin", compilation => {
+			compilation.hooks.finishModules.tap(
+				"WasmFinalizeExportsPlugin",
+				modules => {
+					for (const module of modules) {
+						// 1. if a WebAssembly module
+						if (module.type.startsWith("webassembly") === true) {
+							const jsIncompatibleExports =
+								module.buildMeta.jsIncompatibleExports;
+
+							if (jsIncompatibleExports === undefined) {
+								continue;
+							}
+
+							for (const reason of module.reasons) {
+								// 2. is referenced by a non-WebAssembly module
+								if (reason.module.type.startsWith("webassembly") === false) {
+									const ref = compilation.getDependencyReference(
+										reason.module,
+										reason.dependency
+									);
+
+									if (!ref) continue;
+
+									const importedNames = ref.importedNames;
+
+									if (Array.isArray(importedNames)) {
+										importedNames.forEach(name => {
+											// 3. and uses a func with an incompatible JS signature
+											if (
+												Object.prototype.hasOwnProperty.call(
+													jsIncompatibleExports,
+													name
+												)
+											) {
+												// 4. error
+												/** @type {any} */
+												const error = new UnsupportedWebAssemblyFeatureError(
+													`Export "${name}" with ${
+														jsIncompatibleExports[name]
+													} can only be used for direct wasm to wasm dependencies`
+												);
+												error.module = module;
+												error.origin = reason.module;
+												error.originLoc = reason.dependency.loc;
+												error.dependencies = [reason.dependency];
+												compilation.errors.push(error);
+											}
+										});
+									}
+								}
+							}
+						}
+					}
+				}
+			);
+		});
+	}
+}
+
+module.exports = WasmFinalizeExportsPlugin;