dist folder doesn't seem to sync with src folder properly ?

[a-eid]

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

^3.0.0

Plugin version

^3.1.0

Node.js version

16.14.0

Operating system

macOS

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

macos big sur 11.4

Description

when deleting / renaming files / folders, the old folders / files are kept in the dist directory which is problematic espcially in case when you autoload routes.

for example if you have an invalid route file ( say you rediclared an endpoint with the same path ) or forgot to export from the file. then renamed / moved / removed the file there is no way to get rid of the error unless you removed it from the dist folder.

Steps to Reproduce

• create a new project with the cli.
• copy past the routes/root.ts ( vs code should name it root copy.ts/js or something )
• before editing the file rename it to users.ts/js
• edit your route handle to GET /user for exmple

Expected Behavior

for the dist folder to keep in sync with src folder.