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Add Bun streaming server renderer #25597

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merged 11 commits into from
Nov 17, 2022
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@colinhacks colinhacks commented Nov 1, 2022

Summary

This PR adds a streaming React renderer that's optimized for Bun, and a conditional export in "react-dom" that is respected by the bun runtime.

How did you test this change?

The built versions of build/node_modules/react-dom/esm/react-dom-server.bun.{development|production}.js have been tested against Bun's React test suite: https://github.com/oven-sh/bun/blob/main/test/bun.js/react-dom.test.tsx. For the moment these files were manually copied over to the Bun repo, if/when this PR is merged we'll switch to an NPM dependency in our test suite.

$ bun wiptest react

react-dom.test.tsx:
✓ React > React.createContext works
✓ server.bun(<a>b</a>) > Response.text()
✓ server.bun(<a>b</a>) > Response.arrayBuffer()
✓ server.bun(<a>b</a>) > Response.blob()
✓ server.bun(<a>b</a>) > readableStreamToText(stream)
✓ server.bun(<a>b</a>) > readableStreamToBlob(stream)
✓ server.bun(<a>b</a>) > readableStreamToArray(stream)
✓ server.bun(<a>b</a>) > readableStreamToArrayBuffer(stream)
✓ server.bun(<a>b</a>) > for await (chunk of stream)
✓ server.bun(<a>b</a>) > for await (chunk of stream) (arrayBuffer)
... more tests
✓ server.browser(<span>Hello World!</span>😋L😋l😋L😋) > Response.arrayBuffer()
✓ server.browser(<span>Hello World!</span>😋L😋l😋L😋) > Response.blob()
✓ server.browser(<span>Hello World!</span>😋L😋l😋L😋) > readableStreamToText(stream)
✓ server.browser(<span>Hello World!</span>😋L😋l😋L😋) > readableStreamToBlob(stream)
✓ server.browser(<span>Hello World!</span>😋L😋l😋L😋) > readableStreamToArray(stream)
✓ server.browser(<span>Hello World!</span>😋L😋l😋L😋) > readableStreamToArrayBuffer(stream)
✓ server.browser(<span>Hello World!</span>😋L😋l😋L😋) > for await (chunk of stream)
✓ server.browser(<span>Hello World!</span>😋L😋l😋L😋) > for await (chunk of stream) (arrayBuffer)

 343 pass
 0 fail
 345 expect() calls
 Ran 343 tests across 1 files [2.13s]

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sizebot commented Nov 1, 2022

Comparing: f31005d...9ed1e91

Critical size changes

Includes critical production bundles, as well as any change greater than 2%:

Name +/- Base Current +/- gzip Base gzip Current gzip
oss-stable/react-dom/cjs/react-dom.production.min.js = 154.36 kB 154.36 kB = 48.99 kB 48.99 kB
oss-experimental/react-dom/cjs/react-dom.production.min.js = 156.28 kB 156.28 kB = 49.61 kB 49.61 kB
facebook-www/ReactDOM-prod.classic.js = 533.22 kB 533.22 kB = 94.44 kB 94.44 kB
facebook-www/ReactDOM-prod.modern.js = 518.31 kB 518.31 kB = 92.26 kB 92.26 kB
facebook-www/ReactDOMForked-prod.classic.js = 533.22 kB 533.22 kB = 94.44 kB 94.44 kB
oss-experimental/react-dom/cjs/react-dom-server.bun.development.js +∞% 0.00 kB 315.90 kB +∞% 0.00 kB 72.49 kB
oss-experimental/react-dom/cjs/react-dom-server.bun.production.min.js +∞% 0.00 kB 55.08 kB +∞% 0.00 kB 17.23 kB
oss-experimental/react-dom/server.bun.js +∞% 0.00 kB 0.65 kB +∞% 0.00 kB 0.26 kB
oss-stable-semver/react-dom/cjs/react-dom-server.bun.development.js +∞% 0.00 kB 314.58 kB +∞% 0.00 kB 72.12 kB
oss-stable-semver/react-dom/cjs/react-dom-server.bun.production.min.js +∞% 0.00 kB 54.67 kB +∞% 0.00 kB 17.04 kB
oss-stable-semver/react-dom/server.bun.js +∞% 0.00 kB 0.65 kB +∞% 0.00 kB 0.26 kB
oss-stable/react-dom/cjs/react-dom-server.bun.development.js +∞% 0.00 kB 314.61 kB +∞% 0.00 kB 72.14 kB
oss-stable/react-dom/cjs/react-dom-server.bun.production.min.js +∞% 0.00 kB 54.69 kB +∞% 0.00 kB 17.07 kB
oss-stable/react-dom/server.bun.js +∞% 0.00 kB 0.65 kB +∞% 0.00 kB 0.26 kB

Significant size changes

Includes any change greater than 0.2%:

Expand to show
Name +/- Base Current +/- gzip Base gzip Current gzip
oss-experimental/react-dom/cjs/react-dom-server.bun.development.js +∞% 0.00 kB 315.90 kB +∞% 0.00 kB 72.49 kB
oss-experimental/react-dom/cjs/react-dom-server.bun.production.min.js +∞% 0.00 kB 55.08 kB +∞% 0.00 kB 17.23 kB
oss-experimental/react-dom/server.bun.js +∞% 0.00 kB 0.65 kB +∞% 0.00 kB 0.26 kB
oss-stable-semver/react-dom/cjs/react-dom-server.bun.development.js +∞% 0.00 kB 314.58 kB +∞% 0.00 kB 72.12 kB
oss-stable-semver/react-dom/cjs/react-dom-server.bun.production.min.js +∞% 0.00 kB 54.67 kB +∞% 0.00 kB 17.04 kB
oss-stable-semver/react-dom/server.bun.js +∞% 0.00 kB 0.65 kB +∞% 0.00 kB 0.26 kB
oss-stable/react-dom/cjs/react-dom-server.bun.development.js +∞% 0.00 kB 314.61 kB +∞% 0.00 kB 72.14 kB
oss-stable/react-dom/cjs/react-dom-server.bun.production.min.js +∞% 0.00 kB 54.69 kB +∞% 0.00 kB 17.07 kB
oss-stable/react-dom/server.bun.js +∞% 0.00 kB 0.65 kB +∞% 0.00 kB 0.26 kB

Generated by 🚫 dangerJS against 9ed1e91

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An exciting PR! I think the build options need to be considered some more. Also there are runtime specific tests for node/browser to ensure key apis work in every environment. Can you port those tests to a Bun specific implementation?

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eps1lon commented Nov 2, 2022

The built versions of build/node_modules/react-dom/esm/react-dom-server.bun.{development|production}.js have been tested against Bun's React test suite

FYI you can also test against built artifacts from this PR: https://react-builds.vercel.app/api/prs/25597/packages/react-dom

You can also test against a specific commit. https://react-builds.vercel.app/ explains this in more detail

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Thanks for the comments @gnoff! I've addressed your reviews and comments.

Regarding tests: I could port ReactDOMFizzServerBrowser-test.js to Bun, but the tests would fail unless executed with the Bun runtime, as they rely on a Bun-specific API in ReadableStream:

new ReadableStream({ type: 'direct' })

Since all tests are currently executed with node, this would fail for renderToReadableStream. I figured I should ask before including Bun in the CI environment, since that may not be appreciated, but I think it's doable. We'll have tests in Bun that will run against react-dom@next so we'd catch regressions. Let me know what you think is best 👍

@colinhacks colinhacks marked this pull request as ready for review November 3, 2022 00:16
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gnoff commented Nov 3, 2022

@colinhacks Ah, that's right, i forgot that our browser test is kinda cheating b/c it is running in a mock web standards environment with Jest. You're right it doesn't make sense to add the tests unless we can actually run it in the propert runtime. I'm going to look into this b/c we ought to do tests in all the runtimes really. If you're so included and want to hack on it as well to get something working for Bun too that would be cool. I'll follow up in a few days when I know if this is something I'm acutally going to prioritize right now-ish

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Thanks! the other changes look good. I left a few more comments and also see the CLA still needs to be completed for this to be mergable

packages/react-dom/server.bun.js Outdated Show resolved Hide resolved
packages/react-server/src/ReactServerStreamConfigBun.js Outdated Show resolved Hide resolved
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Jarred-Sumner commented Nov 3, 2022

also see the CLA still needs to be completed for this to be mergable

@gnoff What's the next step for the CLA? I signed it yesterday + added me & @colinhacks under "Schedule A"

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Performance numbers

For a "hello world" component served over http on an M1 in Bun v0.2.2

HTTP req/s ReactDOM renderer
102,321 react-dom/server.bun
29,232 react-dom/server.browser

Overall, this makes SSR'ing React sent over HTTP/HTTPS in Bun up to 3.5x faster, without changing the public API interface.

When using new Response(stream).arrayBuffer() or new Response(stream).text() its closer to 2x (we invested more time optimizing it for HTTP/HTTPS than buffered versions).

There's nothing React-specific about the optimizations in this PR. The performance win comes from Bun's "direct" ReadableStream implementation, which means other frameworks/rendering libraries will get similar performance benefits in Bun for using the type: "direct" ReadableStream.

react-dom/server.bun
oha http://localhost:3001 -z 5s -c 20
Summary:
  Success rate:	1.0000
  Total:	5.0012 secs
  Slowest:	0.0077 secs
  Fastest:	0.0000 secs
  Average:	0.0002 secs
  Requests/sec:	102321.1759

  Total data:	42.46 MiB
  Size/request:	87 B
  Size/sec:	8.49 MiB

Response time histogram:
  0.000 [10001]  |0.000 [40811]  |■■■■■■■
  0.000 [175510] |■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■
  0.000 [178298] |■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■
  0.000 [77296]  |■■■■■■■■■■■■■
  0.000 [19933]  |■■■
  0.000 [5344]   |
  0.000 [1478]   |
  0.000 [402]    |
  0.001 [113]    |
  0.001 [2542]   |

Latency distribution:
  10% in 0.0001 secs
  25% in 0.0002 secs
  50% in 0.0002 secs
  75% in 0.0002 secs
  90% in 0.0003 secs
  95% in 0.0003 secs
  99% in 0.0004 secs

Details (average, fastest, slowest):
  DNS+dialup:	0.0012 secs, 0.0007 secs, 0.0016 secs
  DNS-lookup:	0.0001 secs, 0.0000 secs, 0.0002 secs

Status code distribution:
  [200] 511728 responses
react-dom/server.browser
oha http://localhost:3001 -z 5s -c 20
Summary:
  Success rate:	1.0000
  Total:	5.0009 secs
  Slowest:	0.0079 secs
  Fastest:	0.0001 secs
  Average:	0.0007 secs
  Requests/sec:	29232.7949

  Total data:	12.13 MiB
  Size/request:	87 B
  Size/sec:	2.43 MiB

Response time histogram:
  0.000 [38]    |
  0.000 [23187] |■■■■■■■■■■■■
  0.001 [40043] |■■■■■■■■■■■■■■■■■■■■■
  0.001 [59202] |■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■
  0.001 [14094] |■■■■■■■
  0.001 [1711]  |
  0.001 [1762]  |
  0.002 [3407]  |0.002 [1941]  |0.002 [395]   |
  0.002 [410]   |

Latency distribution:
  10% in 0.0004 secs
  25% in 0.0005 secs
  50% in 0.0007 secs
  75% in 0.0008 secs
  90% in 0.0009 secs
  95% in 0.0012 secs
  99% in 0.0016 secs

Details (average, fastest, slowest):
  DNS+dialup:	0.0007 secs, 0.0006 secs, 0.0008 secs
  DNS-lookup:	0.0000 secs, 0.0000 secs, 0.0001 secs

Status code distribution:
  [200] 146190 responses

Source code (run with bun --jsx-production ./react-hello-world.jsx):

import { renderToReadableStream } from "../../test/bun.js/react-dom-server.bun";
const headers = {
  headers: {
    "Content-Type": "text/html",
  },
};

const App = () => (
  <html>
    <body>
      <h1>Hello World</h1>
      <p>This is an example.</p>
    </body>
  </html>
);

const port = Number(process.env.PORT || 3001);
Bun.serve({
  port,
  async fetch(req) {
    return new Response(await renderToReadableStream(<App />), headers);
  },
});

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I think this is good now. I had one more nit re: package.json

@sebmarkbage I haven't made progress on changing our testing strategy meaningfully for server runtimes so no imminent solution to actually running these tests in CI in a Bun runtime. Is solving the testing issue a blocker to merging this in your mind?

packages/react-dom/package.json Outdated Show resolved Hide resolved
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We can probably land without tests for now.

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Thanks @gnoff for your help with this! Just addressed that final review, I think this is good to go 👍

@gnoff gnoff merged commit 56ffca8 into facebook:main Nov 17, 2022
mofeiZ pushed a commit to mofeiZ/react that referenced this pull request Dec 2, 2022
Add support for Bun server renderer
mofeiZ pushed a commit to mofeiZ/react that referenced this pull request Dec 5, 2022
Add support for Bun server renderer
facebook-github-bot pushed a commit to facebook/react-native that referenced this pull request Jan 30, 2023
Summary:
Three problems popped up during the sync:
- facebook/react@07f46ecf2 breaks breaks tests
- facebook/react@6fb8133ed breaks fbsource tests. I added a workaround and created a test for the team that owns the test.
- https://fb.workplace.com/groups/flowlang/permalink/1198137807458547/ enables local type interference in fbsource but not in github React repo and some code breaks. Addressed in facebook/react#26064

This sync includes the following changes:
- **[17f6912a4](facebook/react@17f6912a4 )**: Add flow types to ReactFiberHooks ([#25752](facebook/react#25752)) //<Samuel Susla>//
- **[f101c2d0d](facebook/react@f101c2d0d )**: Remove Reconciler fork (2/2) ([#25775](facebook/react#25775)) //<Jan Kassens>//
- **[420f0b7fa](facebook/react@420f0b7fa )**: Remove Reconciler fork (1/2) ([#25774](facebook/react#25774)) //<Jan Kassens>//
- **[3ba7add60](facebook/react@3ba7add60 )**: Allow async blocks in `to(Error|Warn)Dev` ([#25338](facebook/react#25338)) //<Sebastian Silbermann>//
- **[fa11bd6ec](facebook/react@fa11bd6ec )**: [ServerRenderer] Add option to send instructions as data attributes ([#25437](facebook/react#25437)) //<mofeiZ>//
- **[e98225485](facebook/react@e98225485 )**: Add ref cleanup function ([#25686](facebook/react#25686)) //<Samuel Susla>//
- **[15557fa67](facebook/react@15557fa67 )**: [Fix] properly track `useId` use in StrictMode in development ([#25713](facebook/react#25713)) //<Josh Story>//
- **[8a23def32](facebook/react@8a23def32 )**: Resubmit Add HydrationSyncLane ([#25711](facebook/react#25711)) //<Tianyu Yao>//
- **[2655c9354](facebook/react@2655c9354 )**: Fizz Browser: fix precomputed chunk being cleared on Node 18 ([#25645](facebook/react#25645)) //<Jimmy Lai>//
- **[c08d8b804](facebook/react@c08d8b804 )**: Revert "Add SyncHydrationLane" ([#25708](facebook/react#25708)) //<Tianyu Yao>//
- **[56ffca8b9](facebook/react@56ffca8b9 )**: Add Bun streaming server renderer ([#25597](facebook/react#25597)) //<Colin McDonnell>//
- **[f31005d6a](facebook/react@f31005d6a )**: Add SyncHydrationLane ([#25698](facebook/react#25698)) //<Tianyu Yao>//
- **[f284d9faf](facebook/react@f284d9faf )**: Track ThenableState alongside other hooks //<Andrew Clark>//
- **[6b4c0314e](facebook/react@6b4c0314e )**: Check thenable instead of thenableState //<Andrew Clark>//
- **[33e3d2878](facebook/react@33e3d2878 )**: Reuse hooks when replaying a suspended component //<Andrew Clark>//
- **[4387d752d](facebook/react@4387d752d )**: Allow more hooks to be added when replaying mount //<Andrew Clark>//
- **[5eb78d0a0](facebook/react@5eb78d0a0 )**: Pass ThenableState to replaySuspendedUnitOfWork //<Andrew Clark>//
- **[4a2d86bdd](facebook/react@4a2d86bdd )**: Don't reset work loop until stack is unwound //<Andrew Clark>//
- **[9dfbd9fa9](facebook/react@9dfbd9fa9 )**: use: Don't suspend if there are pending updates //<Andrew Clark>//
- **[44c4e6f4d](facebook/react@44c4e6f4d )**: Force unwind work loop during selective hydration ([#25695](facebook/react#25695)) //<Andrew Clark>//
- **[7b17f7bbf](facebook/react@7b17f7bbf )**: Enable warning for defaultProps on function components for everyone ([#25699](facebook/react#25699)) //<Sebastian Markbåge>//
- **[6fb8133ed](facebook/react@6fb8133ed )**: Turn on string ref deprecation warning for everybody (not codemoddable) ([#25383](facebook/react#25383)) //<Sebastian Silbermann>//
- **[07f46ecf2](facebook/react@07f46ecf2 )**: Turn on key spread warning in jsx-runtime for everyone ([#25697](facebook/react#25697)) //<Sebastian Markbåge>//
- **[d65b88d03](facebook/react@d65b88d03 )**: Eagerly initialize an mutable object for instance.refs ([#25696](facebook/react#25696)) //<Sebastian Markbåge>//
- **[c343f8025](facebook/react@c343f8025 )**: [react-float] feature detect getRootNode ([#25689](facebook/react#25689)) //<Jan Kassens>//
- **[e1dd0a2f5](facebook/react@e1dd0a2f5 )**: Remove recoverable error when a sync update flows into a dehydrated boundary ([#25692](facebook/react#25692)) //<Sebastian Markbåge>//
- **[c54e3541b](facebook/react@c54e3541b )**: [DevTools] bug fix for Hydrating fibers ([#25663](facebook/react#25663)) //<Mengdi Chen>//

Changelog:
[General][Changed] - React Native sync for revisions d1e35c7...17f6912

jest_e2e[run_all_tests]

Reviewed By: makovkastar

Differential Revision: D42804802

fbshipit-source-id: 6a9f00724cc73378025bbd04edb2d17760a87280
OlimpiaZurek pushed a commit to OlimpiaZurek/react-native that referenced this pull request May 22, 2023
Summary:
Three problems popped up during the sync:
- facebook/react@07f46ecf2 breaks breaks tests
- facebook/react@6fb8133ed breaks fbsource tests. I added a workaround and created a test for the team that owns the test.
- https://fb.workplace.com/groups/flowlang/permalink/1198137807458547/ enables local type interference in fbsource but not in github React repo and some code breaks. Addressed in facebook/react#26064

This sync includes the following changes:
- **[17f6912a4](facebook/react@17f6912a4 )**: Add flow types to ReactFiberHooks ([facebook#25752](facebook/react#25752)) //<Samuel Susla>//
- **[f101c2d0d](facebook/react@f101c2d0d )**: Remove Reconciler fork (2/2) ([facebook#25775](facebook/react#25775)) //<Jan Kassens>//
- **[420f0b7fa](facebook/react@420f0b7fa )**: Remove Reconciler fork (1/2) ([facebook#25774](facebook/react#25774)) //<Jan Kassens>//
- **[3ba7add60](facebook/react@3ba7add60 )**: Allow async blocks in `to(Error|Warn)Dev` ([facebook#25338](facebook/react#25338)) //<Sebastian Silbermann>//
- **[fa11bd6ec](facebook/react@fa11bd6ec )**: [ServerRenderer] Add option to send instructions as data attributes ([facebook#25437](facebook/react#25437)) //<mofeiZ>//
- **[e98225485](facebook/react@e98225485 )**: Add ref cleanup function ([facebook#25686](facebook/react#25686)) //<Samuel Susla>//
- **[15557fa67](facebook/react@15557fa67 )**: [Fix] properly track `useId` use in StrictMode in development ([facebook#25713](facebook/react#25713)) //<Josh Story>//
- **[8a23def32](facebook/react@8a23def32 )**: Resubmit Add HydrationSyncLane ([facebook#25711](facebook/react#25711)) //<Tianyu Yao>//
- **[2655c9354](facebook/react@2655c9354 )**: Fizz Browser: fix precomputed chunk being cleared on Node 18 ([facebook#25645](facebook/react#25645)) //<Jimmy Lai>//
- **[c08d8b804](facebook/react@c08d8b804 )**: Revert "Add SyncHydrationLane" ([facebook#25708](facebook/react#25708)) //<Tianyu Yao>//
- **[56ffca8b9](facebook/react@56ffca8b9 )**: Add Bun streaming server renderer ([facebook#25597](facebook/react#25597)) //<Colin McDonnell>//
- **[f31005d6a](facebook/react@f31005d6a )**: Add SyncHydrationLane ([facebook#25698](facebook/react#25698)) //<Tianyu Yao>//
- **[f284d9faf](facebook/react@f284d9faf )**: Track ThenableState alongside other hooks //<Andrew Clark>//
- **[6b4c0314e](facebook/react@6b4c0314e )**: Check thenable instead of thenableState //<Andrew Clark>//
- **[33e3d2878](facebook/react@33e3d2878 )**: Reuse hooks when replaying a suspended component //<Andrew Clark>//
- **[4387d752d](facebook/react@4387d752d )**: Allow more hooks to be added when replaying mount //<Andrew Clark>//
- **[5eb78d0a0](facebook/react@5eb78d0a0 )**: Pass ThenableState to replaySuspendedUnitOfWork //<Andrew Clark>//
- **[4a2d86bdd](facebook/react@4a2d86bdd )**: Don't reset work loop until stack is unwound //<Andrew Clark>//
- **[9dfbd9fa9](facebook/react@9dfbd9fa9 )**: use: Don't suspend if there are pending updates //<Andrew Clark>//
- **[44c4e6f4d](facebook/react@44c4e6f4d )**: Force unwind work loop during selective hydration ([facebook#25695](facebook/react#25695)) //<Andrew Clark>//
- **[7b17f7bbf](facebook/react@7b17f7bbf )**: Enable warning for defaultProps on function components for everyone ([facebook#25699](facebook/react#25699)) //<Sebastian Markbåge>//
- **[6fb8133ed](facebook/react@6fb8133ed )**: Turn on string ref deprecation warning for everybody (not codemoddable) ([facebook#25383](facebook/react#25383)) //<Sebastian Silbermann>//
- **[07f46ecf2](facebook/react@07f46ecf2 )**: Turn on key spread warning in jsx-runtime for everyone ([facebook#25697](facebook/react#25697)) //<Sebastian Markbåge>//
- **[d65b88d03](facebook/react@d65b88d03 )**: Eagerly initialize an mutable object for instance.refs ([facebook#25696](facebook/react#25696)) //<Sebastian Markbåge>//
- **[c343f8025](facebook/react@c343f8025 )**: [react-float] feature detect getRootNode ([facebook#25689](facebook/react#25689)) //<Jan Kassens>//
- **[e1dd0a2f5](facebook/react@e1dd0a2f5 )**: Remove recoverable error when a sync update flows into a dehydrated boundary ([facebook#25692](facebook/react#25692)) //<Sebastian Markbåge>//
- **[c54e3541b](facebook/react@c54e3541b )**: [DevTools] bug fix for Hydrating fibers ([facebook#25663](facebook/react#25663)) //<Mengdi Chen>//

Changelog:
[General][Changed] - React Native sync for revisions d1e35c7...17f6912

jest_e2e[run_all_tests]

Reviewed By: makovkastar

Differential Revision: D42804802

fbshipit-source-id: 6a9f00724cc73378025bbd04edb2d17760a87280
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7 participants