Initial wasm support

js/worker.js

@@ -0,0 +1,26 @@
+// worker.js
+// nodejs version
+const { parentPort } = require('worker_threads');
+
+parentPort.on('message', async (inputJson) => {
+    const { default: ModuleFactory } = await import('./resolc.mjs');
+    const newModule = await ModuleFactory();
+
+    // Create a virtual file for stdin
+    newModule.FS.writeFile('/in', inputJson);
+
+    // Call main on the new instance
+    const output = newModule.callMain(['--recursive-process']);
+
+    // Check the /err file content
+    const errorMessage = newModule.FS.readFile('/err', { encoding: 'utf8' });
+
+    if (errorMessage.length > 0) {
+        // If /err is not empty, throw an error with its content
+        throw new Error(errorMessage);
+    } else {
+        // If no error, read the output file
+        let outputFile = newModule.FS.readFile('/out', { encoding: 'utf8' });
+        parentPort.postMessage({ output: outputFile });
+    }
+});