feat(nextjs): allow auth header override (#12)

* feat(nextjs): allow auth header override

* chore: bump nextjs proxy version to 0.2.3

libs/client/src/response.ts

@@ -11,6 +11,7 @@ export class ApiError extends Error {
   public readonly body?: any;
   constructor({ message, status, body }: ApiErrorArgs) {
     super(message);
+    this.name = 'ApiError';
     this.status = status;
     this.body = body;
   }

libs/nextjs/package.json

@@ -1,7 +1,7 @@
 {
   "name": "@fal-ai/serverless-nextjs",
   "description": "The fal-serverless Next.js integration",
-  "version": "0.2.2",
+  "version": "0.2.3",
   "license": "MIT",
   "repository": {
     "type": "git",

libs/nextjs/src/handler.ts

@@ -83,7 +83,7 @@ export const handler: NextApiHandler = async (request, response) => {
     method: request.method,
     headers: {
       ...headers,
-      authorization: `Key ${falKey}`,
+      authorization: getHeader(request, 'authorization') ?? `Key ${falKey}`,
       accept: 'application/json',
       'content-type': 'application/json',
       'x-fal-client-proxy': '@fal-ai/serverless-nextjs',