Argument of type 'FastifyCookie' is not assignable to parameter of type 'FastifyPluginCallback<FastifyCookieOptions> | FastifyPluginAsync<FastifyCookieOptions> | Promise<...> | Promise<...>'.

[dev-mariana]

Is there an existing issue for this?

• I have searched the existing issues

Current behavior

error TS2345: Argument of type 'FastifyCookie' is not assignable to parameter of type 'FastifyPluginCallback | FastifyPluginAsync | Promise<...> | Promise<...>'.
Type 'FastifyCookie' is not assignable to type 'FastifyPluginCallback'.
Types of parameters 'instance' and 'instance' are incompatible.
Type 'FastifyInstance<RawServerDefault, IncomingMessage, ServerResponse, FastifyBaseLogger, FastifyTypeProviderDefault>' is missing the following properties from type 'FastifyInstance<RawServerDefault, IncomingMessage, ServerResponse, FastifyBaseLogger, FastifyTypeProviderDefault>': serializeCookie, parseCookie, signCookie, unsignCookie

main.ts:

import fastifyCookie from '@fastify/cookie';
import { NestFactory } from '@nestjs/core';
import {
FastifyAdapter,
NestFastifyApplication,
} from '@nestjs/platform-fastify';
import { ZodExceptionFilter } from '@shared/filters/zod-exception';
import { AppModule } from './app.module';

async function bootstrap() {
const app = await NestFactory.create(
AppModule,
new FastifyAdapter(),
);

await app.register(fastifyCookie, {
secret: process.env.SECRET_KEY,
hook: 'onRequest',
});

app.useGlobalFilters(new ZodExceptionFilter());

await app.listen(4000);
}
bootstrap();

controller:

@post(':poll_id/votes')
async createVote(
@param() { poll_id }: CreateVoteDTOParam,
@Body() { poll_option_id }: CreateVoteDTOBody,
@Req() request: FastifyRequest,
@res({ passthrough: true }) response: FastifyReply,
): Promise {
const voteOnPollBody = createVoteSchemaBody.parse({
poll_option_id: String(poll_option_id),
});

const voteOnPollParams = createVoteSchemaParam.parse({
  poll_id: String(poll_id),
});

let sessionId = request.cookies.sessionId;

if (!sessionId) {
  sessionId = randomUUID();

  response.setCookie('sessionId', sessionId, {
    path: '/',
    maxAge: 60 * 60 * 24 * 30,
    signed: true,
    httpOnly: true,
  });

}

return { sessionId };

}

I already try put the fastifyCookie as any, works, but the cookie is not working as should be, the request.cookies is empty. Someone can help me?

Minimum reproduction code

https://github.com/dev-mariana/nlw-expert-node

Steps to reproduce

No response

Expected behavior

I would like to generate a cookie in my app by post request.

Package

• I don't know. Or some 3rd-party package
• @nestjs/common
• @nestjs/core
• @nestjs/microservices
• @nestjs/platform-express
• @nestjs/platform-fastify
• @nestjs/platform-socket.io
• @nestjs/platform-ws
• @nestjs/testing
• @nestjs/websockets
• Other (see below)

Other package

No response

NestJS version

No response

Packages versions

"dependencies": {
"@fastify/cookie": "^9.3.1",
"@nestjs/common": "^10.0.0",
"@nestjs/core": "^10.0.0",
"@nestjs/mapped-types": "*",
"@nestjs/platform-express": "^10.0.0",
"@nestjs/platform-fastify": "^10.3.3",
"@prisma/client": "^5.9.1",
"fastify": "^4.26.0",
"reflect-metadata": "^0.1.13",
"rxjs": "^7.8.1",
"zod": "^3.22.4"
},

Node.js version

20.10.0

In which operating systems have you tested?

• macOS
• Windows
• Linux

Other

No response

[Tony133]

Remove the fastify dependency (https://github.com/dev-mariana/nlw-expert-node/blob/main/package.json#L30) from the package.json file and the error disappears. If using the fastify platform, it is best to also remove the express platform (see here: https://github.com/dev-mariana/nlw-expert-node/blob/main/package.json#L27) and also the @types/express package (see here: https://github.com/dev-mariana/nlw-expert-node/blob/main/package.json#L39)

I also rewrite it in this topic, the error is due to the fact that you "directly" installed both fastify and @nestjs/platform-fastify dependencies is they are not the same version.

If you install the same version of fastify that is inside the @nestjs/platform-fastify package, the error disappears.

See this issue here for reference: #11265

[dev-mariana]

I tried it here and it solved my problem. Thanks!