type-providers.js

import Fastify from 'fastify'
import { TypeBoxTypeProvider, Type } from 'fastify-type-provider-typebox'

const fastify = Fastify({
  ajv: {
    customOptions: {
      strict: 'log',
      keywords: ['kind', 'modifier']
    }
  }
}).withTypeProvider<TypeBoxTypeProvider>()

fastify.route({
  method: 'GET',
  path: '/route',
  schema: {
    querystring: Type.Object({
      foo: Type.Number(),
      bar: Type.String()
    })
  },
  handler: (request, reply) => {
    // type Query = { foo: number, bar: string }
    const { foo, bar } = request.query // type safe!
  }
})

I think:

import { TypeBoxTypeProvider, Type } from 'fastify-type-provider-typebox'

should be:

import { TypeBoxTypeProvider, Type } from '@fastify/type-provider-typebox'

Also Type isn't used.