Improve error handling

generator/templates/lib.tmpl.rs

@@ -55,15 +55,15 @@ fn init(mut exports: JsObject, env: Env) -> Result<()> {
     // do not uncomment until it is clean as it swallow the error message and
     // makes things event more complicated...
     //
-    // std::panic::set_hook(Box::new(|panic_info| {
-    //     println!("{:?}", panic_info.payload());
-
-    //     if let Some(s) = panic_info.payload().downcast_ref::<&str>() {
-    //         println!("panic occurred: {s:?}");
-    //     } else {
-    //         println!("panic occurred");
-    //     }
-    // }));
+    std::panic::set_hook(Box::new(|panic_info| {
+        // println!("> panic catched: {:?}", panic_info.payload());
+
+        // if let Some(s) = panic_info.payload().downcast_ref::<&str>() {
+        //     println!("panic occurred: {s:?}");
+        // } else {
+        //     println!("panic occurred");
+        // }
+    }));
 
 
     // Store constructor for factory methods and internal instantiations

index.mjs

@@ -24,6 +24,7 @@ import { createRequire } from 'module';
 const require = createRequire(import.meta.url);
 
 const nativeModule = require('./index.cjs');
+console.log(nativeModule);
 export const {
   AudioContext,
   OfflineAudioContext,
@@ -47,11 +48,12 @@ export const {
   PannerNode,
   StereoPannerNode,
   WaveShaperNode,
-
   // helper methods
   mediaDevices,
+  // for wpt tests (maybe not required actually)
+  NotSupportedError
 } = nativeModule;
 
 export default nativeModule;
 
-
+

monkey-patch.js

@@ -160,9 +160,48 @@ function patchOfflineAudioContext(nativeBinding) {
   return OfflineAudioContext;
 }
 
+function monkeyPatchGainNode(nativeBinding) {
+  class GainNode extends nativeBinding.GainNode {
+    constructor(...args) {
+      super(...args);
+
+      const ctorName = this.constructor.name;
+
+      return new Proxy(this, {
+        get(obj, prop) {
+
+        },
+        set(obj, prop, value) {
+          try {
+            return Reflect.set(obj, prop, value);
+          } catch (err) {
+            if (err.message.startsWith('NotSupportedError')) {
+              let msg = `Failed to set the "${prop}" property on "${ctorName}":`
+              msg += ` ${err.message.replace(/^NotSupportedError - /, '')}`
+
+              throw new NotSupportedError(msg);
+            }
+          }
+
+          return true;
+        },
+        apply(target, thisArg, argumentsList) {
+
+        },
+      });
+    }
+  }
+
+  return GainNode;
+}
+
 module.exports = function monkeyPatch(nativeBinding) {
   nativeBinding.AudioContext = patchAudioContext(nativeBinding);
   nativeBinding.OfflineAudioContext = patchOfflineAudioContext(nativeBinding);
+  nativeBinding.GainNode = monkeyPatchGainNode(nativeBinding);
+
+  // for wpt tests
+  nativeBinding.NotSupportedError = NotSupportedError;
 
   // Promisify MediaDevices API
   enumerateDevicesSync = nativeBinding.mediaDevices.enumerateDevices;

src/lib.rs

@@ -102,15 +102,15 @@ fn init(mut exports: JsObject, env: Env) -> Result<()> {
     // do not uncomment until it is clean as it swallow the error message and
     // makes things event more complicated...
     //
-    // std::panic::set_hook(Box::new(|panic_info| {
-    //     println!("{:?}", panic_info.payload());
-
-    //     if let Some(s) = panic_info.payload().downcast_ref::<&str>() {
-    //         println!("panic occurred: {s:?}");
-    //     } else {
-    //         println!("panic occurred");
-    //     }
-    // }));
+    std::panic::set_hook(Box::new(|panic_info| {
+        // println!("> panic catched: {:?}", panic_info.payload());
+
+        // if let Some(s) = panic_info.payload().downcast_ref::<&str>() {
+        //     println!("panic occurred: {s:?}");
+        // } else {
+        //     println!("panic occurred");
+        // }
+    }));
 
     // Store constructor for factory methods and internal instantiations
     // Note that we need to create the js class twice so that export and store