[Bug?]: Dev server builds break after multiple consecutive filesystem saves about redwood HOT 6 OPEN

Hi @shivghai turns out that @orta has similar experiences with his larger app as well ... and has invested some time in implementing hot module reloading (HMR) on the api/graphql side (still a WIP). He can provide more context, but perhaps we can offer a better experience soon.

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@dthyresson Is there a thread I can follow? What do you recommend as next steps?

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I'm happy to help with the implementation too, this is painful enough

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No issue/thread to follow (#9738 relates because it's been my problem), I've mainly been prototyping outside of Redwood but the current runtime mechanics can be switched to remove the build step by moving to vite via: vite-node

Looking roughly like:

vite-node --watch src/server.ts

const schemas = import.meta.glob("./graphql/**/*.sdl.ts", { eager: true })
const services = import.meta.glob("./services/**/*.ts", { eager: true })

const fastify = Fastify({ logger: true })

const { yoga, logger } = createGraphQLYoga({
  allowGraphiQL: true,
  loggerConfig: {
    logger: createLogger({}),
  },
  services: services as any,
  sdls: schemas as any,
})

// [...]


function killServer() {
  if (!_fastify) return

  _fastify.close(() => {
    console.error("Reset graphql")
  })
}

// @ts-ignore
if (import.meta.hot) {
  // @ts-ignore
  const hot = import.meta.hot
  hot.on("vite:beforeFullReload", () => {
    console.log("HMR: full reload")
    killServer()
  })

  hot.dispose(() => {
    console.log("HMR: dispose")
    killServer()
  })
}

At a guess, to pull this off in Redwood would require:

• understanding how to safely stop using the current dev server
• figure out a watcher for files which need updating, that are currently in the build process
• make a codemod for changing the users user-land graphql function code to use vite-node compatible import syntax instead of the babel modifications

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Thanks @orta !

@Josh-Walker-GM and @Tobbe - any thoughts on how we might get api/gql side hmr in dev server?

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I have a more fleshed out working version of HMR in https://github.com/orta/redwood-vite-api

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