Help: Property does not exist on type Fastify

[rslucena]

💬 Question here

I have a doubt in the process of creating plugins. In fact, in the creation and registration of third-party plugins as well.

In a few moments of starting my application I get the following message:

Property '...' does not exist on type 'Fastify...'

*This doesn't always happen

I would like to understand what may be happening, or just have a suggestion on how to debug

//in this example I am registering a third-party plugin, Multipart

import * as fastify from 'fastify'
import fastifyMultipart from '@fastify/multipart'
const Server: FastifyInstance = fastify({
  logger: process.env.APP_SHOWLOG === 'true'
})
Server.register(fastifyMultipart)
export default Server

//...another file
import Server from "service/server"
Server.post('/', (req: FastifyRequest, reply: FastifyReply) => { const Data = await req.file() } )

At some point in the use of what would be the registered object req.file(), or req.files(), in the fastify startup console I get:

error TS2339: Property 'file' does not exist on type 'FastifyRequest<RouteGenericInterface, RawServerDefault, IncomingMessage, FastifySchema, FastifyTypeProviderDefault, unknown, FastifyBaseLogger, ResolveFastifyRequestType<...>>'.

Can you tell me what it could be... In plugins that I also made, using fastify-plugin, the result is the same.

I hope I made it clear, thanks for the help

Your Environment

"@aws-sdk/client-s3": "^3.388.0",
"@fastify/compress": "^6.4.0",
"@fastify/helmet": "^11.0.0",
"@fastify/multipart": "^7.7.2",
"@fastify/rate-limit": "^8.0.1",
"@fastify/swagger": "^8.7.0",
"@fastify/swagger-ui": "^1.9.2",
"@mailchimp/mailchimp_transactional": "^1.0.50",
"@prisma/client": "^5.0.0",
"amqplib": "^0.10.3",
"dotenv": "^16.3.1",
"fastify": "^4.19.2",
"ioredis": "^5.3.2",
"ts-node": "^10.9.1",
"tsconfig-paths": "^4.2.0",
"ws": "^8.13.0",
"zod": "^3.21.4",
"zod-to-json-schema": "^3.21.3"
"@types/amqplib": "^0.10.1",
"@types/mailchimp__mailchimp_transactional": "^1.0.5",
"@types/node": "^20.4.5",
"@types/ws": "^8.5.5",
"prisma": "^5.0.0",
"ts-node-dev": "^2.0.0",
"typescript": "^5.1.6"

[Uzlopak]

If you dont await the register of the plugin than your whole app is full of race conditions.

[Uzlopak]

Closing due to inactivity