### What?
enable the custom allocator flag to enable mialloc.
allow to configure custom allocator on napi level.
### Why?
It's faster and we had it enabled before.
It was disable before as `next-core` is used with no default features in
workspace
Native Build: https://github.com/vercel/next.js/actions/runs/7388725004
Closes PACK-2185
---------
Co-authored-by: OJ Kwon <1210596+kwonoj@users.noreply.github.com>
<!-- Thanks for opening a PR! Your contribution is much appreciated.
To make sure your PR is handled as smoothly as possible we request that
you follow the checklist sections below.
Choose the right checklist for the change(s) that you're making:
## For Contributors
### Improving Documentation
- Run `pnpm prettier-fix` to fix formatting issues before opening the
PR.
- Read the Docs Contribution Guide to ensure your contribution follows
the docs guidelines:
https://nextjs.org/docs/community/contribution-guide
### Adding or Updating Examples
- The "examples guidelines" are followed from our contributing doc
https://github.com/vercel/next.js/blob/canary/contributing/examples/adding-examples.md
- Make sure the linting passes by running `pnpm build && pnpm lint`. See
https://github.com/vercel/next.js/blob/canary/contributing/repository/linting.md
### Fixing a bug
- Related issues linked using `fixes #number`
- Tests added. See:
https://github.com/vercel/next.js/blob/canary/contributing/core/testing.md#writing-tests-for-nextjs
- Errors have a helpful link attached, see
https://github.com/vercel/next.js/blob/canary/contributing.md
### Adding a feature
- Implements an existing feature request or RFC. Make sure the feature
request has been accepted for implementation before opening a PR. (A
discussion must be opened, see
https://github.com/vercel/next.js/discussions/new?category=ideas)
- Related issues/discussions are linked using `fixes #number`
- e2e tests added
(https://github.com/vercel/next.js/blob/canary/contributing/core/testing.md#writing-tests-for-nextjs)
- Documentation added
- Telemetry added. In case of a feature if it's used or not.
- Errors have a helpful link attached, see
https://github.com/vercel/next.js/blob/canary/contributing.md
## For Maintainers
- Minimal description (aim for explaining to someone not on the team to
understand the PR)
- When linking to a Slack thread, you might want to share details of the
conclusion
- Link both the Linear (Fixes NEXT-xxx) and the GitHub issues
- Add review comments if necessary to explain to the reviewer the logic
behind a change
-->
### What?
This PR refactors organization for the rust side packages to build
`next-swc`.
### Why?
We had some historical legacy around package structures, have ambiguous
name for `core` / `next-core`. One contains swc transform visitor for
the next.js, and the other one is new for turbopack's core next.js
features. In addition to that, there was a package dependency chain
prevents to use `core` in the turobpack / next-swc both, so each time
porting a transformer into turbopack it requires to extract new
dependency to be imported in the both place.
PR touches its organization - while PR is large to touch various files,
the crux is summarized at
2cedd06ea5
:
1. `core` becomes `next-custom-transforms`, also this becomes an
agnostic pkg can be imported in turbopack / wasm / next-swc
2. simplify dependency chain to import next-custom-transforms, organized
as below
```mermaid
flowchart TD
C(next-custom-transforms) --> A(napi)
C(next-custom-transforms) --> B(wasm)
D(next-core) --> A(napi)
E(next-build) --> A(napi)
F(next-api) --> A(napi)
C(next-custom-transforms) --> D
D(next-core) --> F(next-api)
D(next-core) --> E(next-build)
```
`impl CustomTransformer` for the each transform still lives in
`next-core`, so turbopack specific dependency is isolated under
`next-core/build/api`.
Closes PACK-2201
Closes PACK-2202
---------
Co-authored-by: hrmny <8845940+ForsakenHarmony@users.noreply.github.com>
* Creating the readme for me `@next/swc` with basic development
instructions
* Adding instructions for testing and updating the `next/swc` tests
## Documentation
- [x] Make sure the linting passes by running `pnpm build && pnpm lint`
