This removes the previous `server/future` directory and moves everything
into the `server` or `server/lib` directories. This is aimed to start to
flatten the server application structure.
### What?
optimize allocations in server actions transform
In one edge case it reduces allocations from 30GB to 4.5MB and time from
760ms to 11ms.
### Why?
make it faster
Effectively a revert of https://github.com/vercel/next.js/pull/66006,
but:
- Keeps the cleanup changes from that PR.
- With https://github.com/vercel/nextpack/pull/106 removing the explicit
`--features plugin` flag, we will match behavior between cargo's
defaults and the nextpack development scripts (which we want to do for
maximizing cache reuse).
The tradeoff here is faster cold builds, at the cost of waiting longer
when you want to test with plugins.
Feedback from @kdy1 was:
> I think it's a good idea to disable plugin by default for nextpack. We
don't use it for most of daily development, but it's very large and slow
to compile
Tested by running both:
```
pnpm build-native
pnpm build-native-no-plugin
```
### What
Use `next-flight-loader` to transform the client components into client
reference in middleware and instrumentation.
Add related required webpack aliases, such as alias for
`react-server-dom-webpack`
### Why
issue reported in
https://github.com/vercel/next.js/pull/65424#issuecomment-2128902585
This adds a new target in the next-swc package designed as an entrypoint
for collecting memory benches. Later PRs in the stack add a script to
run the benches and finally a manual-triggered CI step
We'd like to warn users if they have particularly slow file IO, so that they can correct the problem themselves, and don't send us reports of poor performance.
- Feature request: https://vercel.slack.com/archives/C03KAR5DCKC/p1716051650641529
- Tweet about how Bun does this: https://x.com/jarredsumner/status/1637549427677364224
- Bun implementation: 06a9aa80c3/src/install/install.zig (L3038)
**Why 100ms?** Bun used to use 10ms, found it too noisy, and switched to 100ms.
This benchmark should run non-blocking in the background and should not meaningfully slow down server startup (even on slow disks).
## Simulated Testing
I looked around and found https://github.com/schoentoon/slowpokefs/. It hasn't been updated in 10 years, but still seems to build fine.
In a nextjs project directory, turn `.next` into an artifically slow mount point:
```
fusermount -uz .next; rm -rf .next .next.real && mkdir .next .next.real && ~/slowpokefs/slowpokefs -m 50 -M 50 --no-slow-read -F .next.real .next
```
<img width="695" alt="Screenshot 2024-05-21 at 4 14 58 PM" src="https://github.com/vercel/next.js/assets/180404/217d7692-33cf-42b7-bbf7-5a530b9e0df1">
Run `pnpm dev --turbo` and see that the warning is generated.
## "Real World" Testing
The following tests are from a linux VM using virtiofs to connect to a 5400 RPM USB 2.0 HDD with APFS:
Only the .next is on an HDD (bind mount):
Otherwise idle disk: `4.86ms 4.44ms 5.31ms`
Otherwise busy disk (copying files): `69.34ms 53.75ms 25.12ms`
The whole project directory is on the HDD (more realistic):
Otherwise idle disk: `20.29ms 35.61ms 48.12ms`
Otherwise busy disk (copying files): `131.40ms 21.71ms 87.33ms`
Most of the time the threshold was not reached, but the 131.40ms test did trigger the warning!
Fixes PACK-3087
As noted in (https://github.com/vercel/nextpack/pull/103), by not having
this as a default feature, when running the `build-native` script it's
not able to re-use any cargo caches that might already exist from a
default build.
Because this feature impacts the swc crate, everything dependent on it
can be forced to rebuild.
By making this a default feature, the hope/theory is that the number of
different ways we potentially build our dependency graph reduces, and
cargo cache hits will improve.
## Changes
- Add `plugin` to the default set of features for `next-swc-napi`.
- Consolidate `build-native-no-plugin-woa` with
`build-native-no-plugin`. Given the lack of any other default features,
these are equivalent.
- `i686-pc-windows-msvc`: Switch to `build-native-no-plugin-release` in
CI instead of just supplying the `--release` flag. This has the benefit
of also enabling `tracing/release_max_level_info`, which might reduce
the size of or speed up these builds.
- `x86_64-apple-darwin`: Remove a redundant `--release` flag in the CI
config (no expected changes).
## Testing
I've tested this locally on Linux (`pnpm run build-native`) and
Windows-on-ARM (`pnpm run build-native-no-plugin`) by making sure things
still build. I'll also make sure CI passes.
Previously with Turbopack, we would attempt to establish a websocket
connection to the HMR server, even when running production builds. This
adds `next-turbopack.ts`, which includes the necessary runtime code for
Turbopack, but does not include HMR code.
Test Plan: `TURBOPACK=1 TURBOPACK_BUILD=1 pnpm next build
test/e2e/app-dir/app-middleware`
---------
Co-authored-by: Tim Neutkens <tim@timneutkens.nl>
Depends on vercel/turbo#8165
This:
- Creates and uses a `BeforeResolvePlugin` to handle requests to
`next/font/local/target.css` instead of `ImportMapping` replacers
- Returns a `ResolveResultItem::Error` which includes a custom
`StyledString` describing the missing font file
Test Plan: `TURBOPACK=1 pnpm test-dev
test/e2e/app-dir/next-font/next-font.test.ts`
