Follow up to https://github.com/facebook/react/pull/29201. If a chunk
had listeners attached already (e.g. because `.then` was called on the
chunk returned from `createFromReadableStream`),
`wakeChunkIfInitialized` would overwrite any listeners added during
chunk initialization. This caused cyclic [path
references](https://github.com/facebook/react/pull/28996) within that
chunk to never resolve. Fixed by merging the two arrays of listeners.
Fixes#29200
The cyclic state might have added listeners that will still need to be
invoked. This happens if we have a cyclic reference AND end up blocked.
We have already cleared these before entering the parsing when we enter
the CYCLIC state so we they already have the right type. If listeners
are added during this phase they should carry over to the blocked state.
---------
Co-authored-by: Hendrik Liebau <mail@hendrik-liebau.de>
## Summary
```js
assertConsoleErrorDev([
['Hello', {withoutStack: true}]
])
```
now errors with a helpful diff message if the message mismatched. See
first commit for previous behavior.
## How did you test this change?
- `yarn test --watch
packages/internal-test-utils/__tests__/ReactInternalTestUtils-test.js`
## Summary
Enables the `disableStringRefs` and `enableRefAsProp` feature flags for
React Native (Meta).
## How did you test this change?
```
$ yarn test
$ yarn flow fabric
```
## Summary
Closes#29130
## How did you test this change?
Run the healthcheck in the compiler playground and the nodejs.org repo
for the next config with a `.mjs` extension. Sanity with Vite React
template.
Signed-off-by: abizek <abishekilango@protonmail.com>
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## Summary
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does the pull request solve?
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In the playground, it's hard to see at a glance what compiler passes are
involved in introducing changes.
This PR bolds every pass that introduces a change.
## How did you test this change?
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Before:
<img width="1728" alt="image"
src="https://github.com/facebook/react/assets/5144292/803ca786-0726-4456-b0db-520dc90a6771">
After:
<img width="1728" alt="image"
src="https://github.com/facebook/react/assets/5144292/38885644-00e9-4065-9c44-db533000d13a">
## Summary
- While rolling out RDT 5.2.0 on Fusebox, we've discovered that context
menus don't work well with this environment. The reason for it is the
context menu state implementation - in a global context we define a map
of registered context menus, basically what is shown at the moment (see
deleted Contexts.js file). These maps are not invalidated on each
re-initialization of DevTools frontend, since the bundle
(react-devtools-fusebox module) is not reloaded, and this results into
RDT throwing an error that some context menu was already registered.
- We should not keep such data in a global state, since there is no
guarantee that this will be invalidated with each re-initialization of
DevTools (like with browser extension, for example).
- The new implementation is based on a `ContextMenuContainer` component,
which will add all required `contextmenu` event listeners to the
anchor-element. This component will also receive a list of `items` that
will be displayed in the shown context menu.
- The `ContextMenuContainer` component is also using
`useImperativeHandle` hook to extend the instance of the component, so
context menus can be managed imperatively via `ref`:
`contextMenu.current?.hide()`, for example.
- **Changed**: The option for copying value to clipboard is now hidden
for functions. The reasons for it are:
- It is broken in the current implementation, because we call
`JSON.stringify` on the value, see
`packages/react-devtools-shared/src/backend/utils.js`.
- I don't see any reasonable value in doing this for the user, since `Go
to definition` option is available and you can inspect the real code and
then copy it.
- We already filter out fields from objects, if their value is a
function, because the whole object is passed to `JSON.stringify`.
## How did you test this change?
### Works with element props and hooks:
- All context menu items work reliably for props items
- All context menu items work reliably or hooks items
https://github.com/facebook/react/assets/28902667/5e2d58b0-92fa-4624-ad1e-2bbd7f12678f
### Works with timeline profiler:
- All context menu items work reliably: copying, zooming, ...
- Context menu automatically closes on the scroll event
https://github.com/facebook/react/assets/28902667/de744cd0-372a-402a-9fa0-743857048d24
### Works with Fusebox:
- Produces no errors
- Copy to clipboard context menu item works reliably
https://github.com/facebook/react/assets/28902667/0288f5bf-0d44-435c-8842-6b57bc8a7a24
By default, React Compiler will skip compilation if it cannot preserve existing memoization. Ie, if the code has an existing `useMemo()` or `useCallback()` and the compiler cannot determine that it is safe to keep that memoization — or do even better — then we'll leave the code alone. The actual compilation doesn't use any hints from existing memo calls, this is purely to check and avoid regressing any specific memoization that developers may have already applied.
However, we were accidentally reporting some false-positive _validation_ errors due to the StartMemoize and FinishMemoize instructions that we emit to track where the memoization was in the source code. This is now fixed.
Fixes#29131Fixes#29132
ghstack-source-id: 9f6b8dbc50
Pull Request resolved: https://github.com/facebook/react/pull/29154
Improves ValidateNoRefAccessInRender (still disabled by default) to properly ignore ref access within effects. This includes allowing ref access within functions that are only transitively called from an effect.
While I was here I also added some extra test fixtures for allowing global mutation in effects.
ghstack-source-id: fb6352a178
Pull Request resolved: https://github.com/facebook/react/pull/29151
As a fellow beginner to React, I didn't even know React runs on top of
Node when I started.
So, some beginners might get confused about what is Node and how to find
details about it or how to download it.
So, I thought to add a hyperlink to Node replacing the word Node in the
README.md file. I think this might be a valuable contribution.
- Januda
## Summary
The "Good First Issues" header in the README was missing a hyperlink
where the other similar headlines had one.
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## How did you test this change?
N/A
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Babel doesn't seem to properly preserve escaping of HTML entities when emitting JSX text children, so this commit works around the issue by emitting a JsxExpressionContainer for JSX children that contain ">", "<", or "&" characters.
Closes#29100
ghstack-source-id: 2d0622397c
Pull Request resolved: https://github.com/facebook/react/pull/29143
## Summary
Every tab wraps the text around but there is no way to resize it. It was
also hard to use the source map tab. It doesn't occupy the full height
nor is the tab resizable. So I made all the tabs resizable.
> Also,
> * make the source map tab occupy full height
> * make it a teeny tiny bit easier to work with the compiler playground
(especially source map)
## How did you test this change?
https://github.com/facebook/react/assets/91976421/cdec30e8-cadb-4958-8786-31c54ea83bd6
Signed-off-by: abizek <abishekilango@protonmail.com>
Adds a GitHub issue template form so we can automatically categorize
issues and get more information upfront. I mostly referenced the
DevTools bug report template and made some tweaks.
ghstack-source-id: 5bfc728a62
Pull Request resolved: https://github.com/facebook/react/pull/29140
Workaround for a bug in older versions of Babel, where strings with unicode are incorrectly escaped when emitted as JSX attributes, causing double-escaping by later processing.
Closes#29120Closes#29124
ghstack-source-id: 065440d4fb
Pull Request resolved: https://github.com/facebook/react/pull/29141
Now that the compiler is public, the `*` version was grabbing the latest
version of the compiler off of npm and was resolving to my very first
push to npm (an empty package containing only a single package.json).
This was breaking the playground as it would attempt to load the
compiler but then crash the babel pipeline due to the node module not
being found.
ghstack-source-id: 695fd9caac
Pull Request resolved: https://github.com/facebook/react/pull/29122
@jbonta nerd-sniped me into making this optimization during conference
prep, posting this as a PR now that keynote is over.
Consider these two cases:
```javascript
export default function MyApp1({ count }) {
const cb = () => count;
return <div onclick={cb}>Hello World</div>;
}
export default function MyApp2({ count }) {
return <div onclick={() => count}>Hello World</div>;
}
```
Previously, the former would create two reactive scopes (one for `cb`,
one for the div) while the latter would only have a single scope for the
`div` and its inline callback. The reason we created separate scopes
before is that there's a `StoreLocal 'cb' = t0` instruction in-between,
and i had conservatively implemented the merging pass to not allow
intervening StoreLocal instructions.
The observation is that intervening StoreLocals are fine _if_ the
assigned variable's last usage is the next scope. We already have a
check that the intervening lvalues are last-used at/before the next
scope, so it's trivial to extend this to support StoreLocal.
Note that we already don't merge scopes if there are intervening
terminals, so we don't have to worry about things like conditional
StoreLocal, conditional access of the resulting value, etc.
/cc @poteto
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## Summary
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does the pull request solve?
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Seems like the README of the package was outdated.
## How did you test this change?
Tried this configuration in a project of mine.
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## Summary
Use `filename` instead of `context.filename` in eslint compiler.
The problem is that in `react-native` + `typescript` project the context
may not have `filename`:
<img width="384" alt="image"
src="https://github.com/facebook/react/assets/22820318/e5d184fa-5ac9-4512-96b9-644baa3d5f25">
And eslint will crash with:
```bash
TypeError: Error while loading rule 'react-compiler/react-compiler': Cannot read properties of undefined (reading 'endsWith')
```
But in fact we already derive `filename` variable earlier so we can
simply reuse the variable (I guess).
## How did you test this change?
- add `eslint` plugin to RN project;
- run eslint
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## Summary
This PR fixes a typo in `./compiler/docs/DESIGN_GOALS.md`.
I believe `plugion` should be `plugin`.
## How did you test this change?
Rendered the markdown to html.
Lauren Tan
Janka Uryga
Sebastian Markbåge
Sebastian Silbermann
Timothy Yung
Abishek Ilango
Jack Youstra
Ruslan Lesiutin
dependabot[bot]
Herrington Darkholme
Joe Savona
Januda Bethmin
NickeSteenen
Risto Keravuori
mofeiZ
Joseph Savona
Yuta Sakou
Jason Bonta
Jan Amann
Kirill Zyusko
Steven