linter: oxc(no-async-endpoint-handlers) reports Fastify endpoints

[mootoday]

What version of Oxlint are you using?

0.16.0

What command did you run?

pnpm dlx oxlint@latest -D suspicious .

What does your .oxlintrc.json config file look like?

None

What happened?

Fastify (https://fastify.dev/) async endpoints are considered Express async endpoints.

This is what a Fastify server looks like:

import Fastify from 'fastify'

const fastify = Fastify({
  logger: true
})

fastify.get('/', async (request, reply) => {
  return { hello: 'world' }
})

const start = async () => {
  try {
    await fastify.listen({ port: 3000 })
  } catch (err) {
    fastify.log.error(err)
    process.exit(1)
  }
}
start()

Not a blocking issue as I can disable the oxc(no-async-endpoint-handlers) rule.

[nrayburn-tech]

Looking at the code for the rule, it seems pretty specific to Express < version 5. Other frameworks like Fastify, Koa, etc. may not have the same limitations.

Probably the best resolution for this is to rename the rule to be Express specific. Users would still need to enable/disable it based on which version of Express they are using. However, it would avoid flagging for other frameworks like Express that do support async handlers.