From 649f42f603fe199e1832a8f8769c3d3d7113859a Mon Sep 17 00:00:00 2001
From: Deepjyoti Barman <deepjyoti@supertokens.com>
Date: Fri, 4 Oct 2024 14:54:27 +0530
Subject: [PATCH] Update types of fastify instance and plugin

---
 lib/build/framework/fastify/index.d.ts |  6 +++++-
 lib/build/framework/fastify/types.d.ts | 14 +++++++++++---
 lib/ts/framework/fastify/types.ts      | 14 +++++++++++---
 3 files changed, 27 insertions(+), 7 deletions(-)

diff --git a/lib/build/framework/fastify/index.d.ts b/lib/build/framework/fastify/index.d.ts
index b8cc44a0e..878d1ec23 100644
--- a/lib/build/framework/fastify/index.d.ts
+++ b/lib/build/framework/fastify/index.d.ts
@@ -1,6 +1,10 @@
 // @ts-nocheck
 export type { SessionRequest } from "./framework";
-export declare const plugin: import("./types").FastifyPluginCallback;
+export declare const plugin: import("./types").FastifyPluginCallback<import("./types").FastifyInstance<
+    unknown,
+    import("./types").FastifyRequest,
+    import("./types").FastifyReply
+>>;
 export declare const errorHandler: () => (
     err: any,
     req: import("./types").FastifyRequest,
diff --git a/lib/build/framework/fastify/types.d.ts b/lib/build/framework/fastify/types.d.ts
index 7b73e61cf..86c117df5 100644
--- a/lib/build/framework/fastify/types.d.ts
+++ b/lib/build/framework/fastify/types.d.ts
@@ -19,7 +19,15 @@ export interface FastifyReply {
     getHeader(key: any): number | string | string[] | undefined;
     type(contentType: string): FastifyReply;
 }
-export interface FastifyInstance<Instance = any, Request = any, Reply = any> {
-    addHook(name: string, hook: (req: Request, reply: Reply) => void): Instance;
+export interface FastifyInstance<
+    Instance = unknown,
+    Request extends FastifyRequest = FastifyRequest,
+    Reply extends FastifyReply = FastifyReply
+> {
+    addHook(this: Instance, name: string, hook: (req: Request, reply: Reply) => void): Instance;
 }
-export declare type FastifyPluginCallback = (instance: any, opts: any, done: (err?: Error) => void) => void;
+export declare type FastifyPluginCallback<Instance = FastifyInstance> = (
+    instance: Instance,
+    opts: unknown,
+    done: (err?: Error) => void
+) => void;
diff --git a/lib/ts/framework/fastify/types.ts b/lib/ts/framework/fastify/types.ts
index ca965f97d..16d5a8b22 100644
--- a/lib/ts/framework/fastify/types.ts
+++ b/lib/ts/framework/fastify/types.ts
@@ -21,8 +21,16 @@ export interface FastifyReply {
     type(contentType: string): FastifyReply;
 }
 
-export interface FastifyInstance<Instance = any, Request = any, Reply = any> {
-    addHook(name: string, hook: (req: Request, reply: Reply) => void): Instance;
+export interface FastifyInstance<
+    Instance = unknown,
+    Request extends FastifyRequest = FastifyRequest,
+    Reply extends FastifyReply = FastifyReply
+> {
+    addHook(this: Instance, name: string, hook: (req: Request, reply: Reply) => void): Instance;
 }
 
-export type FastifyPluginCallback = (instance: any, opts: any, done: (err?: Error) => void) => void;
+export type FastifyPluginCallback<Instance = FastifyInstance> = (
+    instance: Instance,
+    opts: unknown,
+    done: (err?: Error) => void
+) => void;