Property 'config' does not exist on type 'FastifyInstance<RawServerDefault, IncomingMessage, ServerResponse<IncomingMessage>, FastifyBaseLogger, FastifyTypeProviderDefault>'.

[zoey-t]

Prerequisites

• I have written a descriptive issue title
• I have searched existing issues to ensure the bug has not already been reported

Fastify version

^4.24.2"

Plugin version

^4.2.0

Node.js version

v18.12.0

Operating system

macOS

Operating system version (i.e. 20.04, 11.3, 10)

14.0 (23A344)

Description

The code structure is created with fastify-cli using typescript template.

// file: authorization.ts
import { FastifyInstance } from "fastify"

const authorization = async (fastify:FastifyInstance, opts) => {
	const { httpErrors, config } = fastify // got error: Property 'config' does not exist on type 'FastifyInstance<RawServerDefault, IncomingMessage, ServerResponse<IncomingMessage>, FastifyBaseLogger, FastifyTypeProviderDefault>'.
}

Steps to Reproduce

The code structure is created with fastify-cli using typescript template.
maybe the error is cause by @fastify/env not extending the fastify instance object like this

declare module 'fastify' {
  export interface FastifyInstance {
    someSupport(): string;
  }
}

My code

// file: authorization.ts
import { FastifyInstance } from "fastify"

const authorization = async (fastify:FastifyInstance, opts) => {
	const { httpErrors, config } = fastify // got error: Property 'config' does not exist on type 'FastifyInstance<RawServerDefault, IncomingMessage, ServerResponse<IncomingMessage>, FastifyBaseLogger, FastifyTypeProviderDefault>'.
}

I already registerred the "@fastify/env"

// file: app.ts
import Env from "@fastify/env"
const app: FastifyPluginAsync<AppOptions> = async (
	fastify,
	opts
): Promise<void> => {
	// Place here your custom code!
	// env
	void fastify.register(Env, {
		schema: S.object()
			.prop("NODE_ENV", S.string().default("development"))
			.valueOf(),
	})

is it bec

Expected Behavior

No response

[mcollina]

I think you need to add a TS reference block to load @fastify/env