Add interface to access V8-only error method.

renderers/web_core/CHANGELOG.md

@@ -1,13 +1,12 @@
+## 0.8.5
+
+- Add `V8ErrorConstructor` interface to be able to access V8-only 
+  `captureStackTrace` method in errors.
+
 ## 0.8.4
 
 - Tweak v0.8 Schema for Button and TextField to better match the spec.
 
 ## 0.8.3
 
 - The `MarkdownRenderer` type is now async and returns a `Promise<string>`.
-
-## 0.8.2
-
-## 0.8.1
-
-## 0.8.0

renderers/web_core/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@a2ui/web_core",
-  "version": "0.8.4",
+  "version": "0.8.5",
   "description": "A2UI Core Library",
   "main": "./dist/src/v0_8/index.js",
   "types": "./dist/src/v0_8/index.d.ts",

renderers/web_core/src/v0_9/errors.ts

@@ -14,6 +14,14 @@
  * limitations under the License.
  */
 
+/**
+ * This interface is needed for typescript to allow us to access the V8-only
+ * `captureStackTrace` property in Errors.
+ */
+interface V8ErrorConstructor extends ErrorConstructor {
+  captureStackTrace(targetObject: object, constructorOpt?: Function): void;
+}
+
 /**
  * Base class for all A2UI specific errors.
  */
@@ -26,8 +34,8 @@ export class A2uiError extends Error {
     this.code = code;
 
     // Maintains proper stack trace for where our error was thrown (only available on V8)
-    if (Error.captureStackTrace) {
-      Error.captureStackTrace(this, this.constructor);
+    if ((Error as V8ErrorConstructor).captureStackTrace) {
+      (Error as V8ErrorConstructor).captureStackTrace(this, this.constructor);
     }
   }
 }