1 files changed, 33 insertions, 0 deletions
diff --git a/node_modules/wrangler/templates/middleware/middleware-miniflare3-json-error.ts b/node_modules/wrangler/templates/middleware/middleware-miniflare3-json-error.ts
new file mode 100644
index 0000000..9377781
--- /dev/null
+++ b/node_modules/wrangler/templates/middleware/middleware-miniflare3-json-error.ts
@@ -0,0 +1,33 @@
+import type { Middleware } from "./common";
+
+interface JsonError {
+	message?: string;
+	name?: string;
+	stack?: string;
+	cause?: JsonError;
+}
+
+function reduceError(e: any): JsonError {
+	return {
+		name: e?.name,
+		message: e?.message ?? String(e),
+		stack: e?.stack,
+		cause: e?.cause === undefined ? undefined : reduceError(e.cause),
+	};
+}
+
+// See comment in `bundle.ts` for details on why this is needed
+const jsonError: Middleware = async (request, env, _ctx, middlewareCtx) => {
+	try {
+		return await middlewareCtx.next(request, env);
+	} catch (e: any) {
+		const error = reduceError(e);
+		return Response.json(error, {
+			status: 500,
+			headers: { "MF-Experimental-Error-Stack": "true" },
+		});
+	}
+};
+
+export default jsonError;
+export const wrap = undefined;