Currently, inferred effect dependencies are considered a
"compiler-required" feature. This means that untransformed callsites
should escalate to a build error.
`ValidateNoUntransformedReferences` iterates 'special effect' callsites
and checks that the compiler was able to successfully transform them.
Prior to this PR, this relied on checking the number of arguments passed
to this special effect.
This obviously doesn't work with `noEmit: true`, which is used for our
eslint plugin (this avoids mutating the babel program as other linters
run with the same ast). This PR adds a set of `babel.SourceLocation`s to
do best effort matching in this mode.
DiffTrain build for [8039f1b2a0](https://github.com/facebook/react/commit/8039f1b2a05d00437cd29707761aeae098c80adc)
Currently, `babel-plugin-react-compiler` is bundled with (almost) all
external dependencies. This is because babel traversal and ast logic is
not forward-compatible. Since `babel-plugin-react-compiler` needs to be
compatible with babel pipelines across a wide semvar range, we (1) set
this package's babel dependency to an early version and (2) inline babel
libraries into our bundle.
A few other packages in `react/compiler` depend on the compiler. This PR
moves `snap`, our test fixture compiler and evaluator, to use the
bundled version of `babel-plugin-react-compiler`. This decouples the
babel version used by `snap` with the version used by
`babel-plugin-react-compiler`, which means that `snap` now can test
features from newer babel versions (see
https://github.com/facebook/react/pull/32742).
---
[//]: # (BEGIN SAPLING FOOTER)
Stack created with [Sapling](https://sapling-scm.com). Best reviewed
with [ReviewStack](https://reviewstack.dev/facebook/react/pull/32758).
* #32759
* __->__ #32758
DiffTrain build for [33999c4317](https://github.com/facebook/react/commit/33999c43177e13580730c2fad94a77f4b0e08ef2)
This got moved into the functional component and class component case
statements here:
https://github.com/facebook/react/commit/0de1233fd180969f7ffdfc98151922f2466ceb1f.
So that we could separate the error case for class components.
However, due to a faulty rebase this got restored at the top as well.
Leading to double component renders being logged.
In the other offscreen reconnect passes we don't do this in each case
statement but still once at the top. The reason this doesn't matter is
because use the PerformedWork flag and that is only set for function and
class components. Although maybe it should be set for expensive DOM
components too and then we have to remember this.
DiffTrain build for [f9e1b16098](https://github.com/facebook/react/commit/f9e1b16098f2ff4ed483285219b07066525796b6)
Casing was incorrect.
Tested by running locally with a PAT.
```
$ scripts/release/download-experimental-build.js --commit=2d40460cf768071d3a70b4cdc16075d23ca1ff25
Command failed: gh attestation verify artifacts_combined.zip --repo=facebook/react
Error: failed to fetch attestations from facebook/react: HTTP 404: Not Found (https://api.github.com/repos/facebook/react/attestations/sha256:23d05644f9e49e02cbb441e3932cc4366b261826e58ce222ea249a6b786f0b5f?per_page=30)
`gh attestation verify artifacts_combined.zip --repo=facebook/react` (exited with error code 1)
$ scripts/release/download-experimental-build.js --commit=2d40460cf768071d3a70b4cdc16075d23ca1ff25 --noVerify
⠼ Downloading artifacts from GitHub for commit 2d40460cf7) 5% 0.1m, estimated 1.6m
✓ Downloading artifacts from GitHub for commit 2d40460cf7) 9.5 secs
An experimental build has been downloaded!
You can download this build again by running:
scripts/download-experimental-build.js --commit=2d40460cf768071d3a70b4cdc16075d23ca1ff25
```
DiffTrain build for [4845e16c22](https://github.com/facebook/react/commit/4845e16c22caf27334a1eab712ed258a9ae09752)
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-->
## Summary
1. Having a development build for FB will be convenient for fb internal
feature development
2. Add a new checkbox to toggle new internal features added to React
Devtools.
## How did you test this change?
1. yarn test
2. set extra env variables in bash profile and build an internal version
with the new script.
3. toggle on/off the new checkbox, the value is stored in local storage
correctly.
---------
Co-authored-by: Aohua Mu <muaohua@fb.com>
DiffTrain build for [dc9b74647e](https://github.com/facebook/react/commit/dc9b74647e093b531dc876a2438f12dac776e480)
(Found when compiling Meta React code)
Let variable declarations and reassignments are currently rewritten to
`StoreLocal <varName>` instructions, which each translates to a new
`const varName` declaration in codegen.
```js
// Example input
function useHook() {
const getX = () => x;
let x = CONSTANT1;
if (cond) {
x += CONSTANT2;
}
return <Stringify getX={getX} />
}
// Compiled output, prior to this PR
import { c as _c } from "react/compiler-runtime";
function useHook() {
const $ = _c(1);
let t0;
if ($[0] === Symbol.for("react.memo_cache_sentinel")) {
const getX = () => x;
let x = CONSTANT1;
if (cond) {
let x = x + CONSTANT2;
x;
}
t0 = <Stringify getX={getX} />;
$[0] = t0;
} else {
t0 = $[0];
}
return t0;
}
```
This also manifests as a babel internal error when replacing the
original function declaration with the compiler output. The below
compilation output fails with `Duplicate declaration "x" (This is an
error on an internal node. Probably an internal error.)`.
```js
// example input
let x = CONSTANT1;
if (cond) {
x += CONSTANT2;
x = CONSTANT3;
}
// current output
let x = CONSTANT1;
if (playheadDragState) {
let x = x + CONSTANT2
x;
let x = CONSTANT3;
}
```
DiffTrain build for [254dc4d9f3](https://github.com/facebook/react/commit/254dc4d9f37eb512d4ee8bad6a0fae7ae491caef)
Avoid failing builds when imported function specifiers conflict by using
babel's `generateUid`. Failing a build is very disruptive, as it usually
presents to developers similar to a javascript parse error.
```js
import {logRender as _logRender} from 'instrument-runtime';
const logRender = () => { /* local conflicting implementation */ }
function Component_optimized() {
_logRender(); // inserted by compiler
}
```
Currently, we fail builds (even in `panicThreshold:none` cases) when
import specifiers are detected to conflict with existing local
variables. The reason we destructively throw (instead of bailing out) is
because (1) we first generate identifier references to the conflicting
name in compiled functions, (2) replaced original functions with
compiled functions, and then (3) finally check for conflicts.
When we finally check for conflicts, it's too late to bail out.
```js
// import {logRender} from 'instrument-runtime';
const logRender = () => { /* local conflicting implementation */ }
function Component_optimized() {
logRender(); // inserted by compiler
}
```
DiffTrain build for [c61e75b76d](https://github.com/facebook/react/commit/c61e75b76d5ff6707ad75c8beb777e721d982207)
Follow up to #32656.
Remove touchAction from SwipeRecognizer. I was under the wrong
impression that this was only the touch-action applied to this
particular element, but that parents would still win but in fact this
blocks the parent from scrolling in the other direction. By specifying a
fixed direction it also blocked rage-swiping in the other direction
early on.
Disable pointer-events on view-transition so that the scroll can be hit.
This means that touches hit below the items animating above. This allows
swiping to happen again before momentum scroll has finished. Previously
they were ignored. This only works as long as the SwipeRecognizer is
itself not animating. This means you can now rage-swipe in both
directions quickly.
DiffTrain build for [c2a1961747](https://github.com/facebook/react/commit/c2a196174763e0b4f16ed1c512ed4442b062395e)
DiffTrain build for [646835fb59](https://github.com/facebook/react/commit/646835fb59f9ad8557b9f3641515697c153e3faa)
Follow up to #32656.
Remove touchAction from SwipeRecognizer. I was under the wrong
impression that this was only the touch-action applied to this
particular element, but that parents would still win but in fact this
blocks the parent from scrolling in the other direction. By specifying a
fixed direction it also blocked rage-swiping in the other direction
early on.
Disable pointer-events on view-transition so that the scroll can be hit.
This means that touches hit below the items animating above. This allows
swiping to happen again before momentum scroll has finished. Previously
they were ignored. This only works as long as the SwipeRecognizer is
itself not animating. This means you can now rage-swipe in both
directions quickly.
DiffTrain build for [c2a1961747](https://github.com/facebook/react/commit/c2a196174763e0b4f16ed1c512ed4442b062395e)
ViewTransition uses the algorithm to auto-assign names. This
ensures that we could animate between SSR content and client content by
ensuring that the names line up.
However, I missed that we need to bump the id (materialize it) when we
do that. This is what function components do if they use one or more
. This caused duplicate names when two ViewTransitions were
nested without any siblings since they would share name.
DiffTrain build for [9fde224a53](https://github.com/facebook/react/commit/9fde224a53693101a4d15e038d6db37e7a3596ff)
Follow-up to #31850. We want to build using the original commit SHA, not
the merge commit that GitHub Actions creates behind the scenes. We were
already checking out the correct commit object, but the COMMIT_SHA
artifact was still pointing to the merge commit.
This should fix the sizebot links to point to working URLs, too.
DiffTrain build for [9320a0139d](https://github.com/facebook/react/commit/9320a0139df876509c8ebb6f6fd950a6690bd5d9)
Traverse program after running compiler transform to find untransformed
references to compiler features (e.g. `inferEffectDeps`, `fire`).
Hard error to fail the babel pipeline when the compiler fails to
transform these features to give predictable runtime semantics.
Untransformed calls to functions like `fire` will throw at runtime
anyways, so let's fail the build to catch these earlier.
Note that with this fails the build *regardless of panicThreshold*
DiffTrain build for [5398b71158](https://github.com/facebook/react/commit/5398b7115847e87c0053aa719728d8dd1a635ccd)
Removes `EnvironmentConfig.enableMinimalTransformsForRetry` in favor of
`run` parameters. This is a minimal difference but lets us explicitly
opt out certain compiler passes based on mode parameters, instead of
environment configurations
Retry flags don't really make sense to have in `EnvironmentConfig`
anyways as the config is user-facing API, while retrying is a compiler
implementation detail.
(per @josephsavona's feedback
https://github.com/facebook/react/pull/32164#issuecomment-2608616479)
> Re the "hacky" framing of this in the PR title: I think this is fine.
I can see having something like a compilation or output mode that we use
when running the pipeline. Rather than changing environment settings
when we re-run, various passes could take effect based on the
combination of the mode + env flags. The modes might be:
>
> * Full: transform, validate, memoize. This is the default today.
> * Transform: Along the lines of the backup mode in this PR. Only
applies transforms that do not require following the rules of React,
like `fire()`.
> * Validate: This could be used for ESLint.
---
[//]: # (BEGIN SAPLING FOOTER)
Stack created with [Sapling](https://sapling-scm.com). Best reviewed
with [ReviewStack](https://reviewstack.dev/facebook/react/pull/32511).
* #32512
* __->__ #32511
DiffTrain build for [7939d92fcc](https://github.com/facebook/react/commit/7939d92fcc95ad5ee719c38272eaef14a3750fc0)
This change fixes a coverage hole in rolling out with `gating`. Prior to
this PR, configuring `gating` causes React Compiler to bail out of
optimizing some functions.
This means that it's not entirely safe to cutover from `gating` enabled
for all users (i.e. rolled out 100%) to removing the `gating` config
altogether, as new functions may be opted into compilation when they
stop bailing out due to gating-specific logic.
This is technically slightly slower due to the additional function
indirection. An alternative approach is to recommend running a codemod
to insert `use no memo`s on currently-bailing out functions before
removing the`gating` config.
---
Tested [internally](
https://fburl.com/diff/q982ovua) by enabling on a page that previously
had a few hundred bailouts due to gating + hoisted function declarations
and (1) clicking around locally and (2) running a bunch of e2e tests
DiffTrain build for [d92e5713be](https://github.com/facebook/react/commit/d92e5713be2dc78f467c31fce4a1e5c84a74e4e6)
mofeiZandRodrigo Faria
sebmarkbage
poteto
hoxyqandAohua Mu
SamChou19815
josephsavona
acdliteandacdlite
rickhanloniiandrickhanlonii
mofeiZandmofeiZ
potetoandpoteto