:thinking_face: What if we made it an Error again?

lib/browser/api/web-contents.js

@@ -112,6 +112,16 @@ const webFrameMethods = [
 ]
 const webFrameMethodsWithResult = []
 
+const errorConstructors = {
+  Error,
+  EvalError,
+  RangeError,
+  ReferenceError,
+  SyntaxError,
+  TypeError,
+  URIError
+}
+
 const asyncWebFrameMethods = function (requestId, method, callback, ...args) {
   return new Promise((resolve, reject) => {
     this.send('ELECTRON_INTERNAL_RENDERER_ASYNC_WEB_FRAME_METHOD', requestId, method, args)
@@ -119,9 +129,20 @@ const asyncWebFrameMethods = function (requestId, method, callback, ...args) {
       if (error == null) {
         if (typeof callback === 'function') callback(result)
         resolve(result)
+      } else {
+        if (error && error.__ELECTRON_SERIALIZED_ERROR__) {
+          let rehydratedError = error
+
+          if (errorConstructors[error.name]) {
+            rehydratedError = new errorConstructors[error.name](error.message)
+            rehydratedError.stack = error.stack
+          }
+
+          reject(rehydratedError);
         } else {
           reject(error)
         }
+      }
     })
   })
 }