fix: Make sure errors are transferred correctly from js task runner (no-changelog) (#11214)

packages/nodes-base/nodes/Code/errors/WrappedExecutionError.ts

@@ -0,0 +1,35 @@
+import { ApplicationError } from 'n8n-workflow';
+
+export type WrappableError = Record<string, unknown>;
+
+/**
+ * Errors received from the task runner are not instances of Error.
+ * This class wraps them in an Error instance and makes all their
+ * properties available.
+ */
+export class WrappedExecutionError extends ApplicationError {
+	[key: string]: unknown;
+
+	constructor(error: WrappableError) {
+		const message = typeof error.message === 'string' ? error.message : 'Unknown error';
+		super(message, {
+			cause: error,
+		});
+
+		this.copyErrorProperties(error);
+	}
+
+	private copyErrorProperties(error: WrappableError) {
+		for (const key of Object.getOwnPropertyNames(error)) {
+			if (key === 'message' || key === 'stack') {
+				continue;
+			}
+
+			this[key] = error[key];
+		}
+	}
+}
+
+export function isWrappableError(error: unknown): error is WrappableError {
+	return typeof error === 'object' && error !== null;
+}