feat! js_interop improvements

examples/dart/js_wasm/web/main.js

@@ -0,0 +1,22 @@
+import { readFile } from 'fs/promises';
+
+import { compile } from './example.mjs';
+import thermion_dart from './thermion_dart.js';
+
+
+async function runDartWasm() {
+    globalThis['thermion_dart'] = await thermion_dart(); 
+
+    const wasmBytes = await readFile('example.wasm');
+    const compiledApp = await compile(wasmBytes);
+    const instantiatedApp = await compiledApp.instantiate({});
+    try {
+        instantiatedApp.invokeMain();
+    } catch(err) {
+        console.error("Failed");
+        console.error(err);
+    }
+}
+
+runDartWasm().catch(console.error);
+