webpack/lib/wasm/WasmFinalizeExportsPlugin.js

70 lines
2.0 KiB
JavaScript

/*
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;