Missing Type Declarations for `@fastify/vite/plugin`

[kou029w]

Prerequisites

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

Fastify version

5.3.2

Plugin version

8.1.3

Node.js version

20.19.1

Operating system

Linux

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

Ubuntu 24.04 LTS

Description

vite.config.js:

// @ts-check

import viteFastify from '@fastify/vite/plugin';

log:

vite.config.js:3:25 - error TS7016: Could not find a declaration file for module '@fastify/vite/plugin'. '/home/projects/github-udavhkpz/node_modules/@fastify/vite/plugin.mjs' implicitly has an 'any' type.
  If the '@fastify/vite' package actually exposes this module, try adding a new declaration (.d.ts) file containing `declare module '@fastify/vite/plugin';`

3 import viteFastify from '@fastify/vite/plugin';
                          ~~~~~~~~~~~~~~~~~~~~~~


Found 1 error in vite.config.js:3

Link to code that reproduces the bug

https://stackblitz.com/edit/github-udavhkpz?file=vite.config.js&startScript=build,start

Expected Behavior

When importing @fastify/vite/plugin in a TypeScript project, it is useful to have type declarations available so that modules can be used without compiler errors.

If the plugin is intended to be used with TypeScript, having corresponding .d.ts declarations (or publishing the plugin path via types/exports in package.json) would improve compatibility and developer experience.

Thanks!

[shoooe]

It's not just that package for me.

If I do:

pnpm dlx giget@latest gh:fastify/fastify-vite/starters/react-typescript#dev app
cd app
pnpm tsc -p src/client

a whole bunch of Typescript arise.