Turborepo does not seem to make hot reload much faster

[williamlmao]

Verify canary release

• I verified that the issue exists in the latest Turborepo canary release.

Link to code that reproduces this issue

https://github.com/vercel/turborepo

What package manager are you using / does the bug impact?

Yarn v2/v3/v4 (node_modules linker only)

What operating system are you using?

Mac

Which canary version will you have in your reproduction?

2.0.14

Describe the Bug

Hi @timneutkens - wanted to move the conversation from our thread on X so it'll be easier for you to track. Apologies for not including a minimal reproduction - it's a busy morning. Let me know if you need one and I can find some time to get you one this week.

FYI - this is not a huge issue that we're in a rush for you to solve. Just wanted to share my experience/feedback since you guys asked for it on X.

Here's the trace you asked for. I'm not sure if this is right, because it ends up in a trace (not trace.log). When I followed the documentation and tried to do "dev": "next dev --turbo NEXT_TURBOPACK_TRACING=1", I would get an error ⨯ Invalid project directory provided, no such directory: /Users/wl/personalprojects/friends-and-fables/apps/next/NEXT_TURBOPACK_TRACING=1. So I tried to set the env with export NEXT_TURBOPACK_TRACING=1, but even if I set it to 0, I noticed that there was a trace file in my .next that was getting logs appended regardless of the env.

We're using turbo@2.0.14 and tailwind@3.3.2. We do have a postcss.config.js but I don't see postcss in my package.json, so assuming it gets bundled with tailwind.

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Expected Behavior

I'm actually not sure how fast turborepo is supposed to be, but I just know that my hot reloads feel about the same as before. I have not collected a ton of data on this, but I just know anecdotally that my old hot reload times were often between 4-8s and turborepo hot reload times are similar. Pre/post turbo, the reload times would always vary though, so its hard to say.

To Reproduce

Run yarn dev and make updates to code.

Additional context

No response

[chris-olszewski]

I believe this issue was meant for Turbopack which now lives in vercel/next.js See https://vercel.com/blog/turbopack-moving-homes