## Bug
- [ ] Related issues linked using `fixes #number`
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## Feature
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When there're only one edge route in `pages/` and one in `app/`, the virtual client entry is split into pages chunks which is not expected.
We should only create client virtual entries for `app/`, not `pages/`, now we skip the `pages/` entries for client entry now
## Bug
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The `react-server` condition for `exports` is already covered. This PR adds a new test case to cover the `imports` condition for internal dependencies.
## Bug
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## Feature
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Reported by @hanneslund, when a CSS modules file gets imported in server
components, during `collectClientComponentsAndCSSForDependency` in our
client entry plugin it will always be collected no matter it is used or
not. Due to the restriction that we have to collect these imports to
create the client entry, it has to run in the `finishMake` compiler
phase and at that time, module optimization hasn't started yet.
To fix that issue, we run another pass in `afterOptimizeModules` just to
collect CSS imports for the server style manifest and we can filter out
unused modules there.
## Bug
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## Feature
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## Documentation / Examples
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Co-authored-by: kodiakhq[bot] <49736102+kodiakhq[bot]@users.noreply.github.com>
We observed this bug when using `.tsx` as the extension (currently the
condition only matches `.m?js`). Besides that, `react/jsx-runtime`
shouldn't be external too because it has React imported.
## Bug
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## Feature
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PR.
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## Documentation / Examples
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Co-authored-by: kodiakhq[bot] <49736102+kodiakhq[bot]@users.noreply.github.com>
Context:
I am doing some work re: bundle size so I'm spending a lot of time looking at the bundles we generate. This debug options basically deactives mangling and beautifies the output whilst keeping the dead code elimination from Terser which is helpful for me to check what I'm removing.
this is what the output is like with it.
<img width="566" alt="image" src="https://user-images.githubusercontent.com/11064311/192574974-4ff50fb8-43b2-44fe-9df3-c9e3a1b593f8.png">
## Bug
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## Feature
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## Documentation / Examples
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Cleans up a leftover warning as it's no longer relevant to be shown at this particular spot.
## Bug
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## Feature
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## Documentation / Examples
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Re-do of https://github.com/vercel/next.js/pull/40251
Edge SSR'd routes cold boot performances are proportional to the
executed code size.
In order to improve it, we are trying to optimize for the bundle size of
a packed Edge SSR route.
This PR adds ESM compilation targets for all Next.js dist packages and
use them to bundle Edge SSR'd route.
This allows us to leverage the better tree shaking/DCE for ESM modules
in webpack in order to decrease the overall bundle size.
This PR also enables minifying Edge SSR routes. Since we don't control
which minifier might be used later (if any), it's best if we provide an
already optimised bundle.
<img width="903" alt="image"
src="https://user-images.githubusercontent.com/11064311/190005211-b7cb2c58-a56a-44b0-8ee4-fd3f603e41bd.png">
This is a 10ms cold boot win per my benchmarking script, which I'll put
in a subsequent PR.
Not done yet:
- ~~swap exported requires in `next/link` (and others) etc to point them
to the esm modules version~~
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Co-authored-by: JJ Kasper <jj@jjsweb.site>
Co-authored-by: Shu Ding <g@shud.in>
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## Bug
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Co-authored-by: Shu Ding <g@shud.in>
This seems to be the cause for the failure of https://github.com/vercel/next.js/actions/runs/3133433920/jobs/5087331787 that caused[ the revert](https://github.com/vercel/next.js/pull/40967) of my [commit ](11deaaa82b) that changed the edge bundle to SSR.
After investigating, I realised this was the culprit: this forces the test app code to run with this on, somehow, when built on Vercel.
Removing it should fix it. Let's merge if all tests still pass?
Open questions:
- I'm not sure why this is/was needed, since this variable should always be inlined by webpack
- furthermore, this was causing client code to run as-if on the edge?
- but also, this still shouldn't happen because webpack should get rid of it
## Bug
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When fetching the middleware rewrite information via `_next/data` for a static page that is not a `fallback` we can use a `HEAD` request instead of a `GET` request which provides the necessary header information and saves some bandwidth by avoiding sending back the data that is already present in the page.
x-ref: [slack thread](https://vercel.slack.com/archives/C03S8ED1DKM/p1664229966495469)
## Bug
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This reverts commit 11deaaa82b.
Temporarily reverts the above commit due to breaking middleware/edge
functions once deployed.
Fixes:
https://github.com/vercel/next.js/actions/runs/3133433920/jobs/5087331787
cc @shuding @feedthejim
```sh
[GET] /blog/first
13:56:56:61
2022-09-27T20:56:56.671Z 61d43a6a-34a1-40c0-b71f-4ae5d1918431 ERROR /var/task/node_modules/next/dist/esm/client/router.js:1
/* global window */ import React from 'react';
^^^^^^
SyntaxError: Cannot use import statement outside a module
at Object.compileFunction (node:vm:352:18)
at wrapSafe (node:internal/modules/cjs/loader:1033:15)
at Module._compile (node:internal/modules/cjs/loader:1069:27)
at Object.Module._extensions..js (node:internal/modules/cjs/loader:1159:10)
at Module.load (node:internal/modules/cjs/loader:981:32)
at Function.Module._load (node:internal/modules/cjs/loader:822:12)
at Module.require (node:internal/modules/cjs/loader:1005:19)
at require (node:internal/modules/cjs/helpers:102:18)
at Object.<anonymous> (/var/task/node_modules/next/router.js:3:7)
at Module._compile (node:internal/modules/cjs/loader:1105:14)
```
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`
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## Feature
- [ ] Implements an existing feature request or RFC. Make sure the
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PR.
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## Documentation / Examples
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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>
It makes copy-pasting the code easier since the person will be aware of
the import
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## Documentation / Examples
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Co-authored-by: JJ Kasper <jj@jjsweb.site>
Makes sure font loader CSS ends up correctly in the Flight Manifest and Flight Client Entries.
## Bug
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This PR serializes `regions` into `middleware-manifest.json`,
allowing to extend Edge Functions and Middleware for deployment
providers.
## Feature
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feature request has been accepted for implementation before opening a
PR.
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## Documentation / Examples
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Co-authored-by: Seiya Nuta <nuta@seiya.me>
Co-authored-by: JJ Kasper <jj@jjsweb.site>
This reducer takes a good chunk of the bundle but is never run on the server so we can eliminate it. 5-10ms wins from my manual benchmark runs.
## Bug
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## Documentation / Examples
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This PR adds the benchmarking script I've been using for #40251 to
measure the performance improvements that we make to the Edge SSR
runtime.
This tool:
- uploads two version of the benchmarking project to Vercel, one with
the latest canary and the one with your current local changes in dist
(don't forget to build!)
- runs some tests against the published url to measure TTFB
- displays a nice chart and table
What this doesn't do (yet):
- allow you to choose which URL to compare
- allow you to change the measured metric
- run a battery of differnet test
## Bug
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## Feature
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PR.
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https://user-images.githubusercontent.com/11064311/191270204-04447e20-5a40-43a9-bcda-b7eaeb3d270a.mov
## Documentation / Examples
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As per #40926 we commit all node_modules inside test so we can test external packages. It will be much more convenient to not hide them in VS Code. With this configuration, all node_modules folders will be excluded except for these under the test directory.
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As discussed with @sebmarkbage, the handling is more about showing a not found component than it is about a specific status code as these can come in late with streaming.
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Merge e2e tests customized `node_modules` with installed `node_modules`,
to let you debug easily locally without moving folder between
`node_modules` and `node_modules_bak`
Also add `optoutServerComponentsBundle` to config schema.
Clean up some utils, global variables and RegExp usages from the places
I touched recently.
## Bug
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## Feature
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## Documentation / Examples
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Specific logic to handle the file transpilation on the server layer is
implemented in SWC (#40603). When Babel is enabled, that SWC transform
is ignored at the moment. In this PR we add an additional SWC pass after
Babel to handle that.
## Bug
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- [x] Integration tests added
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## Feature
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PR.
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## Documentation / Examples
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Co-authored-by: kodiakhq[bot] <49736102+kodiakhq[bot]@users.noreply.github.com>
Since React 18 returning `undefined` from components is allowed which renders to `undefined` in the RSC response so we need a separate prop to know if the loading boundary was provided.
Thanks to @finn-orsini who reported this problem.
## Bug
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## Feature
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## Documentation / Examples
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We currently resolve the `react-server` condition correctly inside
`externals` for the server layer, however that will cause the resolved
path to be external (as it is called "externals").
So we need a way to hook into the module resolution process to force it
to use the `react-server` condition **when it's on the server layer**.
The `resolve` option doesn't give us that ability, and the solution in
this PR is to leverage `normalModuleFactory`'s resolve hook to override
the resolve options before actually resolving it. And there we can have
the `contextInfo`.
One thing left out is bundling for the edge server, we need to add tests
and sort that out carefully.
## Bug
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## Feature
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PR.
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## Documentation / Examples
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Fixes: https://github.com/vercel/next.js/issues/40927
## Bug
- [x] Related issues linked using `fixes #number`
- [x] Integration tests added
- [ ] Errors have a helpful link attached, see `contributing.md`
Currently, a developer building a website using Next.js could write this
code with no type errors:
```tsx
<Image
width="kangaroo"
height="100px"
quality="medium"
{...rest}
/>
```
This PR adds stricter type checking, which will catch this type of error
earlier.
Similarly, this PR adds stricter types for the `responseLimit`, to
ensure the types align to:
https://nextjs.org/docs/messages/api-routes-response-size-limit
Co-authored-by: Steven <steven@ceriously.com>
Co-authored-by: JJ Kasper <jj@jjsweb.site>
