This PR adds a new `experimental.enableUndici` option to let the
developer switch from `next-fetch` to `undici` as the underlying
polyfill for `fetch` in Node.js.
In the current implementation, Next.js makes sure that `fetch` is always
available by using `node-fetch`. However, we do not polyfill in Node.js
18+, since those versions come with their own `fetch` implementation
already, built-in.
Node.js 18+ uses `undici` under the hood, so letting the developer use
`undici` earlier could make the migration easier later on.
Eventually, we hope to be able to stop polyfilling `fetch` in an
upcoming major version of Next.js, shipping less code.
## Bug
- [ ] Related issues linked using `fixes #number`
- [ ] Integration tests added
- [ ] Errors have helpful link attached, see `contributing.md`
## Feature
- [ ] Implements an existing feature request or RFC. Make sure the
feature request has been accepted for implementation before opening a
PR.
- [ ] Related issues linked using `fixes #number`
- [ ] Integration tests added
- [ ] Documentation added
- [ ] Telemetry added. In case of a feature if it's used or not.
- [ ] Errors have helpful link attached, see `contributing.md`
## Documentation / Examples
- [ ] Make sure the linting passes by running `pnpm lint`
- [ ] The examples guidelines are followed from [our contributing
doc](https://github.com/vercel/next.js/blob/canary/contributing.md#adding-examples)
Co-authored-by: Balázs Orbán <info@balazsorban.com>
Co-authored-by: Sukka <isukkaw@gmail.com>
Co-authored-by: JJ Kasper <jj@jjsweb.site>
Co-authored-by: Steven <steven@ceriously.com>
Typescript published 4.8.2 today and it fails CI, bump our typescript version to 4.8.2 and tweak some typings to make existing e2e typescript tests work properly
* Bump web-vitals from 3.0.0-beta to 3.0.0 stable for typing fix (there's an undefined type but it wasn't caught by ts 4.7), also force compiled it as CJS for pre-compiled
* Bump ncc to 3.34.0 for ts-loader compatibility for new typescript version, ncc 3.33.x cannot work with ts 4.8
* Update pre-compiled
Currently we ignore any files that are traced and handled by a webpack loader to prevent including webpack specific files although users may attempt reading files directly using `fs` even if they are handled by webpack so this leverages the new reason types in `@vercel/nft` to only ignore if it is solely imported.
## Bug
- [ ] Related issues linked using `fixes #number`
- [x] Integration tests added
- [ ] Errors have helpful link attached, see `contributing.md`
x-ref: https://github.com/vercel/next.js/pull/35338
This updates the `outputFileTracing` to fix a few cases we noticed where files weren't caught and also ensures we match webpack's `esm` resolving so that we don't include `cjs` files when webpack expects `esm`, it also updates to the latest `@vercel/nft` version which removes the caching in favor of ensuring the `reasons` map contains all parents allowing us to trace all entries in one `nodeFileTrace` run and the collect the separate files for each entry from the `reasons` map giving us much better performance/reliability.
This also ensures we don't include static image imports when enabled in the traces since they can drastically increase deployment size on larger projects.
This updates to the latest version of `node-file-trace` and leverages the new async fs handling with webpack. In a follow-up PR we will implement the async resolver to share resolving with webpack as well.
x-ref: https://github.com/vercel/nft/pull/236
This updates our `jest` configuration to no longer use `babel-jest` and instead uses `@swc/jest` which is much faster. This also updates to the latest version of `jest`, fixes our `tsconfig.json` used for tests (previously types in `node_modules` weren't resolved correctly), and ensures `next/dist` isn't un-necessarily transpiled in `jest`.
Timings for `yarn testheadless test/unit/` on CI
- before: 3m 30s - 4m ([example run](https://github.com/vercel/next.js/runs/3394701995))
- after: under 1m ([example run](https://github.com/vercel/next.js/pull/28400/checks?check_run_id=3395161621))
Timings for `yarn testheadless test/unit/` locally on m1 mac
- before: 90.16 seconds
- after: 29.92 seconds