[Flight] Encode Symbols as special rows that can be referenced by models … #20171

sebmarkbage · 2020-11-06T00:48:08Z

If a symbol was extracted from Symbol.for(...) then we can reliably recreate the same symbol on the client.

S123:"react.suspense"
J456:{"mySymbol": "$123"}

This doesn't suffer from the XSS problem because you have to write actual code to create one of these symbols. That problem is only a problem because values pass through common other usages of JSON which are not secure.

Since React encodes its built-ins as symbols, we can now use all of them as long as its props are serializable. Like Suspense.

This also allows this pattern to be used with custom objects. I.e. you can tag sensitize objects with symbols that shouldn't otherwise pass through other JSON serialization.

codesandbox-ci · 2020-11-06T00:50:59Z

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sebmarkbage · 2020-11-06T00:51:29Z

(This doesn't support the number based fallback encoding so either the client needs a polyfill for IE or the server needs to disable symbols so that React uses the numbers there too.)

sizebot · 2020-11-06T00:52:52Z

Details of bundled changes.

Comparing: 35e53b4...4e71e3a

react-client

File	Filesize Diff	Gzip Diff	Prev Size	Current Size	Prev Gzip	Current Gzip	ENV
react-client-flight.development.js	+1.8%	+2.6%	14.08 KB	14.32 KB	4.11 KB	4.22 KB	NODE_DEV
react-client-flight.production.min.js	-1.0%	🔺+0.1%	3.31 KB	3.28 KB	1.48 KB	1.48 KB	NODE_PROD

react-transport-dom-relay

File	Filesize Diff	Gzip Diff	Prev Size	Current Size	Prev Gzip	Current Gzip	ENV
ReactFlightDOMRelayClient-dev.js	+4.5%	+3.2%	11.02 KB	11.52 KB	3.28 KB	3.38 KB	FB_WWW_DEV
ReactFlightDOMRelayClient-prod.js	🔺+5.0%	🔺+3.4%	5.25 KB	5.52 KB	1.54 KB	1.59 KB	FB_WWW_PROD
ReactFlightDOMRelayServer-dev.js	+3.8%	+3.9%	23.53 KB	24.43 KB	6.2 KB	6.44 KB	FB_WWW_DEV
ReactFlightDOMRelayServer-prod.js	-3.4%	-3.6%	13.56 KB	13.1 KB	3.64 KB	3.51 KB	FB_WWW_PROD

react-transport-native-relay

File	Filesize Diff	Gzip Diff	Prev Size	Current Size	Prev Gzip	Current Gzip	ENV
ReactFlightNativeRelayClient-prod.js	🔺+5.0%	🔺+3.3%	5.25 KB	5.52 KB	1.53 KB	1.58 KB	RN_FB_PROD
ReactFlightNativeRelayServer-dev.js	+3.8%	+3.8%	23.39 KB	24.28 KB	6.31 KB	6.55 KB	RN_FB_DEV
ReactFlightNativeRelayServer-prod.js	-2.6%	-2.2%	13.86 KB	13.5 KB	3.69 KB	3.61 KB	RN_FB_PROD
ReactFlightNativeRelayClient-dev.js	+4.5%	+3.3%	11.03 KB	11.52 KB	3.27 KB	3.38 KB	RN_FB_DEV

react-transport-dom-webpack

File	Filesize Diff	Gzip Diff	Prev Size	Current Size	Prev Gzip	Current Gzip	ENV
react-transport-dom-webpack.development.js	+1.5%	+2.0%	16.1 KB	16.35 KB	4.62 KB	4.72 KB	NODE_DEV
react-transport-dom-webpack.production.min.js	-0.9%	🔺+0.2%	3.73 KB	3.7 KB	1.65 KB	1.65 KB	NODE_PROD
react-transport-dom-webpack.development.js	+1.5%	+2.0%	17.28 KB	17.54 KB	4.74 KB	4.83 KB	UMD_DEV
react-transport-dom-webpack.production.min.js	-0.9%	🔺+0.4%	3.93 KB	3.9 KB	1.75 KB	1.75 KB	UMD_PROD
react-transport-dom-webpack-server.node.development.js	+4.0%	+3.7%	23.76 KB	24.71 KB	6.54 KB	6.78 KB	NODE_DEV
react-transport-dom-webpack-server.browser.development.js	+4.1%	+3.9%	24.33 KB	25.32 KB	6.41 KB	6.66 KB	UMD_DEV
react-transport-dom-webpack-server.node.production.min.js	🔺+0.2%	-2.2%	6.15 KB	6.17 KB	2.58 KB	2.53 KB	NODE_PROD
react-transport-dom-webpack-server.browser.production.min.js	🔺+0.1%	-2.6%	6.18 KB	6.18 KB	2.66 KB	2.59 KB	UMD_PROD
react-transport-dom-webpack-server.browser.development.js	+4.1%	+3.9%	22.82 KB	23.77 KB	6.28 KB	6.53 KB	NODE_DEV
react-transport-dom-webpack-server.browser.production.min.js	🔺+0.1%	-2.6%	5.97 KB	5.97 KB	2.57 KB	2.5 KB	NODE_PROD

react-server

File	Filesize Diff	Gzip Diff	Prev Size	Current Size	Prev Gzip	Current Gzip	ENV
react-server-flight.development.js	+4.1%	+3.7%	23.26 KB	24.2 KB	6.41 KB	6.65 KB	NODE_DEV
react-server-flight.production.min.js	-0.2%	-2.2%	6.22 KB	6.21 KB	2.63 KB	2.58 KB	NODE_PROD
react-server.development.js	0.0%	-0.1%	5.27 KB	5.27 KB	1.69 KB	1.69 KB	NODE_DEV

Size changes (experimental)

Generated by 🚫 dangerJS against 4e71e3a

sizebot · 2020-11-06T00:54:06Z

	Warnings
⚠️	Could not find build artifacts for base commit: `35e53b4`

Size changes (stable)

Generated by 🚫 dangerJS against 4e71e3a

sebmarkbage · 2020-11-06T01:01:37Z

These should also be encoded inline but then we don't get to use the shorter name by "id" when they're reused and would need to reserve more symbols in the JSON blobs.

Interestingly this is also how WASM does things. However, they do it mostly for versioning purposes and the most common ones can change over time.

We could possibly hard code certain shorthands for common React symbols. We already do that for "react.element" for example. Since the server and client is expected to be versioned together. But you can only do that with so many symbols that you send upfront so they kind of have to earn their place.

gaearon · 2020-11-06T01:29:02Z

packages/react-server/src/ReactFlightServer.js

+      // For key-less fragments, we add a small optimization to avoid serializing
+      // it as a wrapper.
+      // TODO: If a key is specified, we should propagate its key to any children.
+      // Same as if a server component has a key.


This actually reminded me.. What's the plan for different types? Do those also get encoded somehow when we get to encoding keys? Or does the type change trick not work for Server Components?

Yea, it doesn't work for server components but that was already the plan for function components too as part of the "inlining optimization" or "call through". At least stateless ones and only if they don't have an explicit key. The reason it needs to kill state is because the state doesn't "line up" with a different type. A stateless doesn't need to.

It shouldn't be relied upon. If you need it, it should be a different key.

Oh right. So it doesn't matter until you run into a Client one, at which point you have the types on the client anyway.

I guess I still find this a bit counter-intuitive in terms of guarantees. It allows for some fun patterns though. Like SCs could use recursion and then have a terminal CC, and it could still match up on refetch despite different SC depth?

Sure. You could also just call a recursive function. I guess you could use it as a resuming hack.

gaearon · 2020-11-06T01:36:19Z

packages/react-server/src/ReactFlightServer.js

@@ -521,14 +511,20 @@ export function resolveModelToJSON(
  }

  if (typeof value === 'symbol') {
+    const name = value.description;


IIRC, it was actually added late or even later version of the spec.

gaearon · 2020-11-06T01:38:09Z

packages/react-server/src/ReactFlightServer.js

+  key: null | React$Key,
+  ref: mixed,
+  props: any,
+): ReactModel {


Can you explain what you fixed here? I don't get it.

It's a separate commit 29b9646

Yeah but I don't understand what it was fixing

Ah I see the REACT_MEMO_TYPE case. Was it losing element.key and element.ref earlier because you did createElement(type, element.props)?

You did. :) But yea and we might remove the export at some point too. Regardless, it's just less efficient to create an unnecessary element.

gaearon

Nice. So this just passes Suspense to the client. Is there any server behavior we'd want to later add for it, or do we just leave it as a passthrough?

sebmarkbage · 2020-11-06T01:42:43Z

I can't think of any server behavior yet. Since suspending doesn't actually prevent any parent data from being sent similar to how it doesn't prevent siblings from being rendered. It just prevent things from being shown, not computed.

Maybe something about it could hint about the priority order we send the content down but even then we'd probably also send it down.

Maybe also for "instant transitions" it would stop here.

If a symbol was extracted from Symbol.for(...) then we can reliably recreate the same symbol on the client. S123:"react.suspense" M456:{mySymbol: '$123'} This doesn't suffer from the XSS problem because you have to write actual code to create one of these symbols. That problem is only a problem because values pass through common other usages of JSON which are not secure. Since React encodes its built-ins as symbols, we can now use them as long as its props are serializable. Like Suspense.

Going through createElement isn't quite equivalent for ref and key in props.

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**[daf38ecdf](facebook/react@daf38ecdf )**: [Flight] Use lazy reference for existing modules ([#20445](facebook/react#20445)) //<Dan Abramov>// - **[3f9205c33](facebook/react@3f9205c33 )**: Regression test: SuspenseList causes lost unmount ([#20433](facebook/react#20433)) //<Andrew Clark>// - **[cdfde3ae1](facebook/react@cdfde3ae1 )**: Always rethrow original error when we replay errors ([#20425](facebook/react#20425)) //<Sebastian Markbåge>// - **[b15d6e93e](facebook/react@b15d6e93e )**: [Flight] Make PG and FS server-only ([#20424](facebook/react#20424)) //<Dan Abramov>// - **[40ff2395e](facebook/react@40ff2395e )**: [Flight] Prevent non-Server imports of aliased Server entrypoints ([#20422](facebook/react#20422)) //<Dan Abramov>// - **[94aa365e3](facebook/react@94aa365e3 )**: [Flight] Fix webpack plugin to use chunk groups ([#20421](facebook/react#20421)) //<Dan Abramov>// - **[842ee367e](facebook/react@842ee367e )**: [Flight] Rename the shared entry point ([#20420](facebook/react#20420)) //<Dan Abramov>// - **[dbf40ef75](facebook/react@dbf40ef75 )**: Put .server.js at the end of bundle filenames ([#20419](facebook/react#20419)) //<Dan Abramov>// - **[03126dd08](facebook/react@03126dd08 )**: [Flight] Add read-only fs methods ([#20412](facebook/react#20412)) //<Dan Abramov>// - **[b51a686a9](facebook/react@b51a686a9 )**: Turn on double effects for www test renderer ([#20416](facebook/react#20416)) //<Brian Vaughn>// - **[56a632adb](facebook/react@56a632adb )**: Double Invoke Effects in __DEV__ (in old reconciler fork) ([#20415](facebook/react#20415)) //<Brian Vaughn>// - **[1a2422337](facebook/react@1a2422337 )**: fixed typo ([#20351](facebook/react#20351)) //<togami2864>// - **[a233c9e2a](facebook/react@a233c9e2a )**: Rename internal cache helpers ([#20410](facebook/react#20410)) //<Dan Abramov>// - **[6a4b12b81](facebook/react@6a4b12b81 )**: [Flight] Add rudimentary FS binding ([#20409](facebook/react#20409)) //<Dan Abramov>// - **[7659949d6](facebook/react@7659949d6 )**: Clear `deletions` in `detachFiber` ([#20401](facebook/react#20401)) //<Andrew Clark>// - **[b9680aef7](facebook/react@b9680aef7 )**: Cache react-fetch results in the Node version ([#20407](facebook/react#20407)) //<Dan Abramov>// - **[cdae31ab8](facebook/react@cdae31ab8 )**: Fix typo ([#20279](facebook/react#20279)) //<inokawa>// - **[51a7cfe21](facebook/react@51a7cfe21 )**: Fix typo ([#20300](facebook/react#20300)) //<Hollow Man>// - **[373b297c5](facebook/react@373b297c5 )**: fix: Fix typo in react-reconciler docs ([#20284](facebook/react#20284)) //<Sam Zhou>// - **[1b5ca9906](facebook/react@1b5ca9906 )**: Fix module ID deduplication ([#20406](facebook/react#20406)) //<Dan Abramov>// - **[5fd9db732](facebook/react@5fd9db732 )**: [Flight] Rename react-transport-... packages to react-server-... ([#20403](facebook/react#20403)) //<Sebastian Markbåge>// - **[ce40f1dc2](facebook/react@ce40f1dc2 )**: Use assets API + writeToDisk instead of directly writing to disk ([#20402](facebook/react#20402)) //<Sebastian Markbåge>// - **[b66ae09b6](facebook/react@b66ae09b6 )**: Track subtreeFlags et al with bubbleProperties //<Andrew Clark>// - **[de75315d7](facebook/react@de75315d7 )**: Track deletions using an array on the parent //<Andrew Clark>// - **[1377e465d](facebook/react@1377e465d )**: Add Placement bit without removing others ([#20398](facebook/react#20398)) //<Andrew Clark>// - **[18d7574ae](facebook/react@18d7574ae )**: Remove `catch` from Scheduler build ([#20396](facebook/react#20396)) //<Andrew Clark>// - **[30dfb8602](facebook/react@30dfb8602 )**: [Flight] Basic scan of the file system to find Client modules ([#20383](facebook/react#20383)) //<Sebastian Markbåge>// - **[9b8060041](facebook/react@9b8060041 )**: Error when the number of parameters to a query changes ([#20379](facebook/react#20379)) //<Dan Abramov>// - **[60e4a76](facebook/react@60e4a76fa )**: [Flight] Add rudimentary PG binding ([#20372](facebook/react#20372)) //<Dan Abramov>// - **[88ef95712](facebook/react@88ef95712 )**: Fork ReactFiberLane ([#20371](facebook/react#20371)) //<Andrew Clark>// - **[41c5d00fc](facebook/react@41c5d00fc )**: [Flight] Minimal webpack plugin ([#20228](facebook/react#20228)) //<Dan Abramov>// - **[e23673b51](facebook/react@e23673b51 )**: [Flight] Add getCacheForType() to the dispatcher ([#20315](facebook/react#20315)) //<Dan Abramov>// - **[555eeae33](facebook/react@555eeae33 )**: Add disableNativeComponentFrames flag ([#20364](facebook/react#20364)) //<Philipp Spiess>// - **[148ffe3cf](facebook/react@148ffe3cf )**: Failing test for Client reconciliation ([#20318](facebook/react#20318)) //<Dan Abramov>// - **[a2a025537](facebook/react@a2a025537 )**: Fixed invalid DevTools work tags ([#20362](facebook/react#20362)) //<Brian Vaughn>// - **[5711811da](facebook/react@5711811da )**: Reconcile element types of lazy component yielding the same type ([#20357](facebook/react#20357)) //<Sebastian Markbåge>// - **[3f73dcee3](facebook/react@3f73dcee3 )**: Support named exports from client references ([#20312](facebook/react#20312)) //<Sebastian Markbåge>// - **[565148d75](facebook/react@565148d75 )**: Disallow *.server.js imports from any other files ([#20309](facebook/react#20309)) //<Sebastian Markbåge>// - **[e6a0f2763](facebook/react@e6a0f2763 )**: Profiler: Improve nested-update checks ([#20299](facebook/react#20299)) //<Brian Vaughn>// - **[d93b58a5e](facebook/react@d93b58a5e )**: Add flight specific entry point for react package ([#20304](facebook/react#20304)) //<Sebastian Markbåge>// - **[a81c02ac1](facebook/react@a81c02ac1 )**: Profiler onNestedUpdateScheduled accepts id as first param ([#20293](facebook/react#20293)) //<Brian Vaughn>// - **[ac2cff4b1](facebook/react@ac2cff4b1 )**: Warn if commit phase error thrown in detached tree ([#20286](facebook/react#20286)) //<Andrew Clark>// - **[0f83a64ed](facebook/react@0f83a64ed )**: Regression test: Missing unmount after re-order ([#20285](facebook/react#20285)) //<Andrew Clark>// - **[ebf158965](facebook/react@ebf158965 )**: Add best-effort documentation for third-party renderers ([#20278](facebook/react#20278)) //<Dan Abramov>// - **[82e99e1b0](facebook/react@82e99e1b0 )**: Add Node ESM Loader and Register Entrypoints ([#20274](facebook/react#20274)) //<Sebastian Markbåge>// - **[bf7b7aeb1](facebook/react@bf7b7aeb1 )**: findDOMNode: Remove return pointer mutation ([#20272](facebook/react#20272)) //<Andrew Clark>// - **[369c3db62](facebook/react@369c3db62 )**: Add separate ChildDeletion flag ([#20264](facebook/react#20264)) //<Andrew Clark>// - **[765e89b90](facebook/react@765e89b90 )**: Reset new fork to old fork ([#20254](facebook/react#20254)) //<Andrew Clark>// - **[7548dd573](facebook/react@7548dd573 )**: Properly reset Profiler nested-update flag ([#20253](facebook/react#20253)) //<Brian Vaughn>// - **[b44e4b13a](facebook/react@b44e4b13a )**: Check for deletions in `hadNoMutationsEffects` ([#20252](facebook/react#20252)) //<Andrew Clark>// - **[3ebf05183](facebook/react@3ebf05183 )**: Add new effect fields to old fork, and vice versa ([#20246](facebook/react#20246)) //<Andrew Clark>// - **[2fbcc9806](facebook/react@2fbcc9806 )**: Remove cycle between ReactFiberHooks and ReactInternalTypes ([#20242](facebook/react#20242)) //<Paul Doyle>// - **[504222dcd](facebook/react@504222dcd )**: Add Node ESM build option ([#20243](facebook/react#20243)) //<Sebastian Markbåge>// - **[1b96ee444](facebook/react@1b96ee444 )**: Remove noinline directives from new commit phase ([#20241](facebook/react#20241)) //<Andrew Clark>// - **[760d9ab57](facebook/react@760d9ab57 )**: Scheduling profiler tweaks ([#20215](facebook/react#20215)) //<Brian Vaughn>// - **[9403c3b53](facebook/react@9403c3b53 )**: Add Profiler callback when nested updates are scheduled ([#20211](facebook/react#20211)) //<Brian Vaughn>// - **[62efd9618](facebook/react@62efd9618 )**: [email protected] //<Dan Abramov>// - **[e7006d67d](facebook/react@e7006d67d )**: Widen peer dependency range of use-subscription ([#20225](facebook/react#20225)) //<Billy Janitsch>// - **[15df051c9](facebook/react@15df051c9 )**: Add warning if return pointer is inconsistent ([#20219](facebook/react#20219)) //<Andrew Clark>// - **[9aca239f1](facebook/react@9aca239f1 )**: Improved dev experience when DevTools hook is disabled ([#20208](facebook/react#20208)) //<Alphabet Codes>// - **[12627f93b](facebook/react@12627f93b )**: Perform hasOwnProperty check in Relay Flight ([#20220](facebook/react#20220)) //<Sebastian Markbåge>// - **[163199d8c](facebook/react@163199d8c )**: Dedupe module id generation ([#20172](facebook/react#20172)) //<Sebastian Markbåge>// - **[76a6dbcb9](facebook/react@76a6dbcb9 )**: [Flight] Encode Symbols as special rows that can be referenced by models … ([#20171](facebook/react#20171)) //<Sebastian Markbåge>// - **[35e53b465](facebook/react@35e53b465 )**: [Flight] Simplify Relay row protocol ([#20168](facebook/react#20168)) //<Sebastian Markbåge>// - **[16e6dadba](facebook/react@16e6dadba )**: Encode throwing server components as lazy throwing references ([#20217](facebook/react#20217)) //<Sebastian Markbåge>// - **[c896cf961](facebook/react@c896cf961 )**: Set return pointer when reusing current tree ([#20212](facebook/react#20212)) //<Andrew Clark>// - **[089866015](facebook/react@089866015 )**: Add version of scheduler that only swaps MessageChannel for postTask ([#20206](facebook/react#20206)) //<Ricky>// - **[393c452e3](facebook/react@393c452e3 )**: Add "nested-update" phase to Profiler API ([#20163](facebook/react#20163)) //<Brian Vaughn>// - **[13a62feab](facebook/react@13a62feab )**: Fix path for SchedulerFeatureFlags ([#20200](facebook/react#20200)) //<Ricky>// - **[7a73d6a0f](facebook/react@7a73d6a0f )**: (Temporarily) revert unmounting error boundaries changes ([#20147](facebook/react#20147)) //<Brian Vaughn>// - **[c29710a57](facebook/react@c29710a57 )**: fix: useImperativeMethods to useImperativeHandle ([#20194](facebook/react#20194)) //<Jack Works>// jest_e2e[run_all_tests] Changelog: [General][Changed] - React Native sync for revisions c3e20f1...4d28eca Reviewed By: mdvacca Differential Revision: D26583597 fbshipit-source-id: a042df12c587fa9248d8de6f0b21b3ab231b3a7d

Summary: This sync includes the following changes: - **[b9c4a01f7](facebook/react@b9c4a01f7 )**: Allow the streaming config to decide how to precompute or compute chunks ([#21008](facebook/react#21008)) //<Sebastian Markbåge>// - **[c06d245fc](facebook/react@c06d245fc )**: Update devtools-extensions build script to reflect changes in local b… ([#21004](facebook/react#21004)) //<Hector Rincon>// - **[14e4fd1ff](facebook/react@14e4fd1ff )**: [Fizz] Move DOM/Native format configs to their respective packages ([#20994](facebook/react#20994)) //<Sebastian Markbåge>// - **[f2b6bf7c8](facebook/react@f2b6bf7c8 )**: [Fizz] Destroy the stream with an error if the root throws ([#20992](facebook/react#20992)) //<Sebastian Markbåge>// - **[10cc40018](facebook/react@10cc40018 )**: Basic Fizz Architecture ([#20970](facebook/react#20970)) //<Sebastian Markbåge>// - **[b7e631066](facebook/react@b7e631066 )**: Stop tracking roots with pending discrete updates ([#20978](facebook/react#20978)) //<Andrew Clark>// - **[860f673](facebook/react@860f673a7 )**: Remove Blocking Mode (again) ([#20974](facebook/react#20974)) //<Ricky>// - **[acde65469](facebook/react@acde65469 )**: Unify InputDiscreteLane with SyncLane ([#20968](facebook/react#20968)) //<Ricky>// - **[6556e2a87](facebook/react@6556e2a87 )**: Cleaned up unused PassiveUnmountPendingDev DEV flag ([#20973](facebook/react#20973)) //<Brian Vaughn>// - **[60182d64c](facebook/react@60182d64c )**: Cleanup tests using runWithPriority. ([#20958](facebook/react#20958)) //<Ricky>// - **[e4d4b7074](facebook/react@e4d4b7074 )**: Land enableNativeEventPriorityInference ([#20955](facebook/react#20955)) //<Ricky>// - **[73e900b0e](facebook/react@73e900b0e )**: Land enableDiscreteEventMicroTasks ([#20954](facebook/react#20954)) //<Ricky>// - **[41e62e771](facebook/react@41e62e771 )**: Remove runWithPriority internally //<Rick Hanlon>// - **[431e76e2d](facebook/react@431e76e2d )**: Switch callsites over to update lane priority //<Rick Hanlon>// - **[e89d74ee6](facebook/react@e89d74ee6 )**: Remove decoupleUpdatePriorityFromScheduler //<Rick Hanlon>// - **[ca15606d8](facebook/react@ca15606d8 )**: chore(build): Ensure experimental builds exists on windows ([#20933](facebook/react#20933)) //<Sebastian Silbermann>// - **[d74559746](facebook/react@d74559746 )**: Use update lane priority to set pending updates on roots ([#20918](facebook/react#20918)) //<Ricky>// - **[f04bcb813](facebook/react@f04bcb813 )**: [Bugfix] Reset `subtreeFlags` in `resetWorkInProgress` ([#20948](facebook/react#20948)) //<Andrew Clark>// - **[c7b449798](facebook/react@c7b449798 )**: [Experiment] Lazily propagate context changes ([#20890](facebook/react#20890)) //<Andrew Clark>// - **[258b375a4](facebook/react@258b375a4 )**: Move context comparison to consumer //<Andrew Clark>// - **[7df65725b](facebook/react@7df65725b )**: Split getComponentName into getComponentNameFromFiber and getComponentNameFromType ([#20940](facebook/react#20940)) //<Brian Vaughn>// - **[ee4326357](facebook/react@ee4326357 )**: Revert "Remove blocking mode and blocking root ([#20888](facebook/react#20888))" ([#20916](facebook/react#20916)) //<Andrew Clark>// - **[de0ee76db](facebook/react@de0ee76db )**: Add unstable_strictModeLevel to test renderer ([#20914](facebook/react#20914)) //<Andrew Clark>// - **[d857f9e4d](facebook/react@d857f9e4d )**: Land enableSetImmediate feature flag ([#20906](facebook/react#20906)) //<Dan Abramov>// - **[553440bd1](facebook/react@553440bd1 )**: Remove blocking mode and blocking root ([#20888](facebook/react#20888)) //<Ricky>// - **[38f392ced](facebook/react@38f392ced )**: typo fix for the word 'Psuedo' ([#20894](facebook/react#20894)) //<Bowen>// - **[0cf9fc10b](facebook/react@0cf9fc10b )**: Fix React Native flow types ([#20889](facebook/react#20889)) //<Ricky>// - **[c581cdd48](facebook/react@c581cdd48 )**: Schedule sync updates in microtask ([#20872](facebook/react#20872)) //<Ricky>// - **[90bde6505](facebook/react@90bde6505 )**: Add SuspenseList to react-is ([#20874](facebook/react#20874)) //<Brian Vaughn>// - **[8336f19aa](facebook/react@8336f19aa )**: Update React Native types ([#20883](facebook/react#20883)) //<Rubén Norte>// - **[9209c30ff](facebook/react@9209c30ff )**: Add StrictMode level prop and createRoot unstable_strictModeLevel option ([#20849](facebook/react#20849)) //<Brian Vaughn>// - **[e5f6b91d2](facebook/react@e5f6b91d2 )**: Add Lane labels to scheduling profiler marks ([#20808](facebook/react#20808)) //<Brian Vaughn>// - **[c62986cfd](facebook/react@c62986cfd )**: Add additional messaging for RulesOfHooks lint error ([#20692](facebook/react#20692)) //<Anthony Garritano>// - **[78d2f2d30](facebook/react@78d2f2d30 )**: Fabric-compatible implementation of `JSReponder` feature ([#20768](facebook/react#20768)) //<Valentin Shergin>// - **[4d28eca97](facebook/react@4d28eca97 )**: Land enableNonInterruptingNormalPri ([#20859](facebook/react#20859)) //<Ricky>// - **[8af27aeed](facebook/react@8af27aeed )**: Remove scheduler sampling profiler shared array buffer ([#20840](facebook/react#20840)) //<Brian Vaughn>// - **[af3d52611](facebook/react@af3d52611 )**: Disable (unstable) scheduler sampling profiler for OSS builds ([#20832](facebook/react#20832)) //<Brian Vaughn>// - **[8fa0ccca0](facebook/react@8fa0ccca0 )**: fix: use SharedArrayBuffer only when cross-origin isolation is enabled ([#20831](facebook/react#20831)) //<Toru Kobayashi>// - **[099164792](facebook/react@099164792 )**: Use setImmediate when available over MessageChannel ([#20834](facebook/react#20834)) //<Dan Abramov>// - **[e2fd460cc](facebook/react@e2fd460cc )**: Bailout in sync task if work is not sync ([#20813](facebook/react#20813)) //<Andrew Clark>// - **[1a7472624](facebook/react@1a7472624 )**: Add `supportsMicrotasks` to the host config ([#20809](facebook/react#20809)) //<Andrew Clark>// - **[696e736be](facebook/react@696e736be )**: Warn if static flag is accidentally cleared ([#20807](facebook/react#20807)) //<Andrew Clark>// - **[483358c38](facebook/react@483358c38 )**: Omit TransitionHydrationLane from TransitionLanes ([#20802](facebook/react#20802)) //<Andrew Clark>// - **[78ec97d34](facebook/react@78ec97d34 )**: Fix typo ([#20466](facebook/react#20466)) //<inokawa>// - **[6cdc35972](facebook/react@6cdc35972 )**: fix comments of markUpdateLaneFromFiberToRoot ([#20546](facebook/react#20546)) //<neroneroffy>// - **[47dd9f441](facebook/react@47dd9f441 )**: Remove fakeCallbackNode ([#20799](facebook/react#20799)) //<Andrew Clark>// - **[114ab5295](facebook/react@114ab5295 )**: Make remaining empty lanes Transition lanes ([#20793](facebook/react#20793)) //<Andrew Clark>// - **[d3d2451a0](facebook/react@d3d2451a0 )**: Use a single lane per priority level ([#20791](facebook/react#20791)) //<Andrew Clark>// - **[eee874ce6](facebook/react@eee874ce6 )**: Cross-fork lint: Support named export declaration ([#20784](facebook/react#20784)) //<Andrew Clark>// - **[3b870b1e0](facebook/react@3b870b1e0 )**: Lane enableTransitionEntanglement flag ([#20775](facebook/react#20775)) //<Andrew Clark>// - **[d1845ad0f](facebook/react@d1845ad0f )**: Default updates should not interrupt transitions ([#20771](facebook/react#20771)) //<Andrew Clark>// - **[3499c343a](facebook/react@3499c343a )**: Apply #20778 to new fork, too ([#20782](facebook/react#20782)) //<Andrew Clark>// - **[3d10eca24](facebook/react@3d10eca24 )**: Move scheduler priority check into ReactDOM ([#20778](facebook/react#20778)) //<Dan Abramov>// - **[97fce318a](facebook/react@97fce318a )**: Experiment: Infer the current event priority from the native event ([#20748](facebook/react#20748)) //<Dan Abramov>// - **[6c526c515](facebook/react@6c526c515 )**: Don't shift interleaved updates to separate lane ([#20681](facebook/react#20681)) //<Andrew Clark>// - **[35f7441d3](facebook/react@35f7441d3 )**: Use Lanes instead of priority event constants ([#20762](facebook/react#20762)) //<Dan Abramov>// - **[a014c915c](facebook/react@a014c915c )**: Parallel transitions: Assign different lanes to consecutive transitions ([#20672](facebook/react#20672)) //<Andrew Clark>// - **[77754ae61](facebook/react@77754ae61 )**: Decouple event priority list from event name list ([#20760](facebook/react#20760)) //<Dan Abramov>// - **[b5bac1821](facebook/react@b5bac1821 )**: Align event group constant naming with lane naming ([#20744](facebook/react#20744)) //<Dan Abramov>// - **[4ecf11977](facebook/react@4ecf11977 )**: Remove the Fundamental internals ([#20745](facebook/react#20745)) //<Dan Abramov>// - **[eeb1325b0](facebook/react@eeb1325b0 )**: Fix UMD bundles by removing usage of global ([#20743](facebook/react#20743)) //<Dan Abramov>// - **[0935a1db3](facebook/react@0935a1db3 )**: Delete consolidateBundleSizes script ([#20724](facebook/react#20724)) //<Andrew Clark>// - **[7cb9fd7ef](facebook/react@7cb9fd7ef )**: Land interleaved updates change in main fork ([#20710](facebook/react#20710)) //<Andrew Clark>// - **[dc27b5aaa](facebook/react@dc27b5aaa )**: useMutableSource: Use StrictMode double render to detect render phase mutation ([#20698](facebook/react#20698)) //<Andrew Clark>// - **[bb1b7951d](facebook/react@bb1b7951d )**: fix: don't run effects if a render phase update results in unchanged deps ([#20676](facebook/react#20676)) //<Sebastian Silbermann>// - **[766a7a28a](facebook/react@766a7a28a )**: Improve React error message when mutable sources are mutated during render ([#20665](facebook/react#20665)) //<Brian Vaughn>// - **[a922f1c71](facebook/react@a922f1c71 )**: Fix cache refresh bug that broke DevTools ([#20687](facebook/react#20687)) //<Andrew Clark>// - **[e51bd6c1f](facebook/react@e51bd6c1f )**: Queue discrete events in microtask ([#20669](facebook/react#20669)) //<Ricky>// - **[aa736a0fa](facebook/react@aa736a0fa )**: Add queue microtask to host configs ([#20668](facebook/react#20668)) //<Ricky>// - **[deeeaf1d2](facebook/react@deeeaf1d2 )**: Entangle overlapping transitions per queue ([#20670](facebook/react#20670)) //<Andrew Clark>// - **[e316f7855](facebook/react@e316f7855 )**: RN: Implement `sendAccessibilityEvent` in RN Renderer that proxies between Fabric/non-Fabric ([#20554](facebook/react#20554)) //<Joshua Gross>// - **[9c32622cf](facebook/react@9c32622cf )**: Improve tests that use discrete events ([#20667](facebook/react#20667)) //<Ricky>// - **[d13f5b953](facebook/react@d13f5b953 )**: Experiment: Unsuspend all lanes on update ([#20660](facebook/react#20660)) //<Andrew Clark>// - **[a511dc709](facebook/react@a511dc709 )**: Error for deferred value and transition in Server Components ([#20657](facebook/react#20657)) //<Sebastian Markbåge>// - **[fb3f63f1a](facebook/react@fb3f63f1a )**: Remove lazy invokation of segments ([#20656](facebook/react#20656)) //<Sebastian Markbåge>// - **[895ae67fd](facebook/react@895ae67fd )**: Improve error boundary handling for unmounted subtrees ([#20645](facebook/react#20645)) //<Brian Vaughn>// - **[f15f8f64b](facebook/react@f15f8f64b )**: Store interleaved updates on separate queue until end of render ([#20615](facebook/react#20615)) //<Andrew Clark>// - **[0fd6805c6](facebook/react@0fd6805c6 )**: Land rest of effects refactor in main fork ([#20644](facebook/react#20644)) //<Andrew Clark>// - **[a6b5256a2](facebook/react@a6b5256a2 )**: Refactored recursive strict effects method to be iterative ([#20642](facebook/react#20642)) //<Brian Vaughn>// - **[3957853ae](facebook/react@3957853ae )**: Re-add "strict effects mode" for legacy roots only ([#20639](facebook/react#20639)) //<Brian Vaughn>// - **[fceb75e89](facebook/react@fceb75e89 )**: Delete remaining references to effect list ([#20625](facebook/react#20625)) //<Andrew Clark>// - **[741dcbdbe](facebook/react@741dcbdbe )**: Schedule passive phase whenever there's a deletion ([#20624](facebook/react#20624)) //<Andrew Clark>// - **[11a983fc7](facebook/react@11a983fc7 )**: Remove references to Deletion flag ([#20623](facebook/react#20623)) //<Andrew Clark>// - **[2e948e0d9](facebook/react@2e948e0d9 )**: Avoid .valueOf to close #20594 ([#20617](facebook/react#20617)) //<Dima Tisnek>// - **[2a646f73e](facebook/react@2a646f73e )**: Convert snapshot phase to depth-first traversal ([#20622](facebook/react#20622)) //<Andrew Clark>// - **[fb3e158a6](facebook/react@fb3e158a6 )**: Convert ReactSuspenseWithNoopRenderer tests to use built-in cache ([#20601](facebook/react#20601)) //<Andrew Clark>// - **[e0fd9e67f](facebook/react@e0fd9e67f )**: Use update lane priority in work loop ([#20621](facebook/react#20621)) //<Ricky>// - **[58e830448](facebook/react@58e830448 )**: Remove custom error message from hook access error ([#20604](facebook/react#20604)) //<Andrew Clark>// - **[9043626f0](facebook/react@9043626f0 )**: Cache tests: Make it easier to test many caches ([#20600](facebook/react#20600)) //<Andrew Clark>// - **[af0bb68e8](facebook/react@af0bb68e8 )**: Land #20595 and #20596 in main fork ([#20602](facebook/react#20602)) //<Andrew Clark>// - **[2b6985114](facebook/react@2b6985114 )**: build-combined: Fix failures when renaming across devices ([#20620](facebook/react#20620)) //<Sebastian Silbermann>// - **[af16f755d](facebook/react@af16f755d )**: Update DevTools to use getCacheForType API ([#20548](facebook/react#20548)) //<Brian Vaughn>// - **[95feb0e70](facebook/react@95feb0e70 )**: Convert mutation phase to depth-first traversal ([#20596](facebook/react#20596)) //<Andrew Clark>// - **[6132919bf](facebook/react@6132919bf )**: Convert layout phase to depth-first traversal ([#20595](facebook/react#20595)) //<Andrew Clark>// - **[42e04b46d](facebook/react@42e04b46d )**: Fix: Detach deleted fiber's alternate, too ([#20587](facebook/react#20587)) //<Andrew Clark>// - **[a656ace8d](facebook/react@a656ace8d )**: Deletion effects should fire parent -> child ([#20584](facebook/react#20584)) //<Andrew Clark>// - **[e6ed2bcf4](facebook/react@e6ed2bcf4 )**: Update package.json versions as part of build step ([#20579](facebook/react#20579)) //<Andrew Clark>// - **[eb0fb3823](facebook/react@eb0fb3823 )**: Build stable and experimental with same command ([#20573](facebook/react#20573)) //<Andrew Clark>// - **[e8eff119e](facebook/react@e8eff119e )**: Fix ESLint crash on empty react effect hook ([#20385](facebook/react#20385)) //<Christian Ruigrok>// - **[27659559e](facebook/react@27659559e )**: Add useRefresh hook to react-debug-tools ([#20460](facebook/react#20460)) //<Brian Vaughn>// - **[99554dc36](facebook/react@99554dc36 )**: Add Flight packages to experimental allowlist ([#20486](facebook/react#20486)) //<Andrew Clark>// - **[efc57e5cb](facebook/react@efc57e5cb )**: Add built-in Suspense cache with support for invalidation (refreshing) ([#20456](facebook/react#20456)) //<Andrew Clark>// - **[00a5b08e2](facebook/react@00a5b08e2 )**: Remove PassiveStatic optimization //<Andrew Clark>// - **[a6329b105](facebook/react@a6329b105 )**: Don't clear static flags in resetWorkInProgress //<Andrew Clark>// - **[1cf59f34b](facebook/react@1cf59f34b )**: Convert passive unmount phase to tree traversal //<Andrew Clark>// - **[ab29695a0](facebook/react@ab29695a0 )**: Defer more field detachments to passive phase //<Andrew Clark>// - **[d37d7a4bb](facebook/react@d37d7a4bb )**: Convert passive mount phase to tree traversal //<Andrew Clark>// - **[19e15a398](facebook/react@19e15a398 )**: Add PassiveStatic to trees with passive effects //<Andrew Clark>// - **[ff17fc176](facebook/react@ff17fc176 )**: Don't clear other flags when adding Deletion //<Andrew Clark>// - **[5687864eb](facebook/react@5687864eb )**: Add back disableSchedulerTimeoutInWorkLoop flag ([#20482](facebook/react#20482)) //<Ricky>// - **[9f338e5d7](facebook/react@9f338e5d7 )**: clone json obj in react native flight client host config parser ([#20474](facebook/react#20474)) //<Luna Ruan>// - **[4e62fd271](facebook/react@4e62fd271 )**: clone json obj in relay flight client host config parser ([#20465](facebook/react#20465)) //<Luna Ruan>// - **[070372cde](facebook/react@070372cde )**: [Flight] Fix webpack watch mode issue ([#20457](facebook/react#20457)) //<Dan Abramov>// - **[0f80dd148](facebook/react@0f80dd148 )**: [Flight] Support concatenated modules in Webpack plugin ([#20449](facebook/react#20449)) //<Dan Abramov>// - **[daf38ecdf](facebook/react@daf38ecdf )**: [Flight] Use lazy reference for existing modules ([#20445](facebook/react#20445)) //<Dan Abramov>// - **[3f9205c33](facebook/react@3f9205c33 )**: Regression test: SuspenseList causes lost unmount ([#20433](facebook/react#20433)) //<Andrew Clark>// - **[cdfde3ae1](facebook/react@cdfde3ae1 )**: Always rethrow original error when we replay errors ([#20425](facebook/react#20425)) //<Sebastian Markbåge>// - **[b15d6e93e](facebook/react@b15d6e93e )**: [Flight] Make PG and FS server-only ([#20424](facebook/react#20424)) //<Dan Abramov>// - **[40ff2395e](facebook/react@40ff2395e )**: [Flight] Prevent non-Server imports of aliased Server entrypoints ([#20422](facebook/react#20422)) //<Dan Abramov>// - **[94aa365e3](facebook/react@94aa365e3 )**: [Flight] Fix webpack plugin to use chunk groups ([#20421](facebook/react#20421)) //<Dan Abramov>// - **[842ee367e](facebook/react@842ee367e )**: [Flight] Rename the shared entry point ([#20420](facebook/react#20420)) //<Dan Abramov>// - **[dbf40ef75](facebook/react@dbf40ef75 )**: Put .server.js at the end of bundle filenames ([#20419](facebook/react#20419)) //<Dan Abramov>// - **[03126dd08](facebook/react@03126dd08 )**: [Flight] Add read-only fs methods ([#20412](facebook/react#20412)) //<Dan Abramov>// - **[b51a686a9](facebook/react@b51a686a9 )**: Turn on double effects for www test renderer ([#20416](facebook/react#20416)) //<Brian Vaughn>// - **[56a632adb](facebook/react@56a632adb )**: Double Invoke Effects in __DEV__ (in old reconciler fork) ([#20415](facebook/react#20415)) //<Brian Vaughn>// - **[1a2422337](facebook/react@1a2422337 )**: fixed typo ([#20351](facebook/react#20351)) //<togami2864>// - **[a233c9e2a](facebook/react@a233c9e2a )**: Rename internal cache helpers ([#20410](facebook/react#20410)) //<Dan Abramov>// - **[6a4b12b81](facebook/react@6a4b12b81 )**: [Flight] Add rudimentary FS binding ([#20409](facebook/react#20409)) //<Dan Abramov>// - **[7659949d6](facebook/react@7659949d6 )**: Clear `deletions` in `detachFiber` ([#20401](facebook/react#20401)) //<Andrew Clark>// - **[b9680aef7](facebook/react@b9680aef7 )**: Cache react-fetch results in the Node version ([#20407](facebook/react#20407)) //<Dan Abramov>// - **[cdae31ab8](facebook/react@cdae31ab8 )**: Fix typo ([#20279](facebook/react#20279)) //<inokawa>// - **[51a7cfe21](facebook/react@51a7cfe21 )**: Fix typo ([#20300](facebook/react#20300)) //<Hollow Man>// - **[373b297c5](facebook/react@373b297c5 )**: fix: Fix typo in react-reconciler docs ([#20284](facebook/react#20284)) //<Sam Zhou>// - **[1b5ca9906](facebook/react@1b5ca9906 )**: Fix module ID deduplication ([#20406](facebook/react#20406)) //<Dan Abramov>// - **[5fd9db732](facebook/react@5fd9db732 )**: [Flight] Rename react-transport-... packages to react-server-... ([#20403](facebook/react#20403)) //<Sebastian Markbåge>// - **[ce40f1dc2](facebook/react@ce40f1dc2 )**: Use assets API + writeToDisk instead of directly writing to disk ([#20402](facebook/react#20402)) //<Sebastian Markbåge>// - **[b66ae09b6](facebook/react@b66ae09b6 )**: Track subtreeFlags et al with bubbleProperties //<Andrew Clark>// - **[de75315d7](facebook/react@de75315d7 )**: Track deletions using an array on the parent //<Andrew Clark>// - **[1377e465d](facebook/react@1377e465d )**: Add Placement bit without removing others ([#20398](facebook/react#20398)) //<Andrew Clark>// - **[18d7574ae](facebook/react@18d7574ae )**: Remove `catch` from Scheduler build ([#20396](facebook/react#20396)) //<Andrew Clark>// - **[30dfb8602](facebook/react@30dfb8602 )**: [Flight] Basic scan of the file system to find Client modules ([#20383](facebook/react#20383)) //<Sebastian Markbåge>// - **[9b8060041](facebook/react@9b8060041 )**: Error when the number of parameters to a query changes ([#20379](facebook/react#20379)) //<Dan Abramov>// - **[60e4a76](facebook/react@60e4a76fa )**: [Flight] Add rudimentary PG binding ([#20372](facebook/react#20372)) //<Dan Abramov>// - **[88ef95712](facebook/react@88ef95712 )**: Fork ReactFiberLane ([#20371](facebook/react#20371)) //<Andrew Clark>// - **[41c5d00fc](facebook/react@41c5d00fc )**: [Flight] Minimal webpack plugin ([#20228](facebook/react#20228)) //<Dan Abramov>// - **[e23673b51](facebook/react@e23673b51 )**: [Flight] Add getCacheForType() to the dispatcher ([#20315](facebook/react#20315)) //<Dan Abramov>// - **[555eeae33](facebook/react@555eeae33 )**: Add disableNativeComponentFrames flag ([#20364](facebook/react#20364)) //<Philipp Spiess>// - **[148ffe3cf](facebook/react@148ffe3cf )**: Failing test for Client reconciliation ([#20318](facebook/react#20318)) //<Dan Abramov>// - **[a2a025537](facebook/react@a2a025537 )**: Fixed invalid DevTools work tags ([#20362](facebook/react#20362)) //<Brian Vaughn>// - **[5711811da](facebook/react@5711811da )**: Reconcile element types of lazy component yielding the same type ([#20357](facebook/react#20357)) //<Sebastian Markbåge>// - **[3f73dcee3](facebook/react@3f73dcee3 )**: Support named exports from client references ([#20312](facebook/react#20312)) //<Sebastian Markbåge>// - **[565148d75](facebook/react@565148d75 )**: Disallow *.server.js imports from any other files ([#20309](facebook/react#20309)) //<Sebastian Markbåge>// - **[e6a0f2763](facebook/react@e6a0f2763 )**: Profiler: Improve nested-update checks ([#20299](facebook/react#20299)) //<Brian Vaughn>// - **[d93b58a5e](facebook/react@d93b58a5e )**: Add flight specific entry point for react package ([#20304](facebook/react#20304)) //<Sebastian Markbåge>// - **[a81c02ac1](facebook/react@a81c02ac1 )**: Profiler onNestedUpdateScheduled accepts id as first param ([#20293](facebook/react#20293)) //<Brian Vaughn>// - **[ac2cff4b1](facebook/react@ac2cff4b1 )**: Warn if commit phase error thrown in detached tree ([#20286](facebook/react#20286)) //<Andrew Clark>// - **[0f83a64ed](facebook/react@0f83a64ed )**: Regression test: Missing unmount after re-order ([#20285](facebook/react#20285)) //<Andrew Clark>// - **[ebf158965](facebook/react@ebf158965 )**: Add best-effort documentation for third-party renderers ([#20278](facebook/react#20278)) //<Dan Abramov>// - **[82e99e1b0](facebook/react@82e99e1b0 )**: Add Node ESM Loader and Register Entrypoints ([#20274](facebook/react#20274)) //<Sebastian Markbåge>// - **[bf7b7aeb1](facebook/react@bf7b7aeb1 )**: findDOMNode: Remove return pointer mutation ([#20272](facebook/react#20272)) //<Andrew Clark>// - **[369c3db62](facebook/react@369c3db62 )**: Add separate ChildDeletion flag ([#20264](facebook/react#20264)) //<Andrew Clark>// - **[765e89b90](facebook/react@765e89b90 )**: Reset new fork to old fork ([#20254](facebook/react#20254)) //<Andrew Clark>// - **[7548dd573](facebook/react@7548dd573 )**: Properly reset Profiler nested-update flag ([#20253](facebook/react#20253)) //<Brian Vaughn>// - **[b44e4b13a](facebook/react@b44e4b13a )**: Check for deletions in `hadNoMutationsEffects` ([#20252](facebook/react#20252)) //<Andrew Clark>// - **[3ebf05183](facebook/react@3ebf05183 )**: Add new effect fields to old fork, and vice versa ([#20246](facebook/react#20246)) //<Andrew Clark>// - **[2fbcc9806](facebook/react@2fbcc9806 )**: Remove cycle between ReactFiberHooks and ReactInternalTypes ([#20242](facebook/react#20242)) //<Paul Doyle>// - **[504222dcd](facebook/react@504222dcd )**: Add Node ESM build option ([#20243](facebook/react#20243)) //<Sebastian Markbåge>// - **[1b96ee444](facebook/react@1b96ee444 )**: Remove noinline directives from new commit phase ([#20241](facebook/react#20241)) //<Andrew Clark>// - **[760d9ab57](facebook/react@760d9ab57 )**: Scheduling profiler tweaks ([#20215](facebook/react#20215)) //<Brian Vaughn>// - **[9403c3b53](facebook/react@9403c3b53 )**: Add Profiler callback when nested updates are scheduled ([#20211](facebook/react#20211)) //<Brian Vaughn>// - **[62efd9618](facebook/react@62efd9618 )**: [email protected] //<Dan Abramov>// - **[e7006d67d](facebook/react@e7006d67d )**: Widen peer dependency range of use-subscription ([#20225](facebook/react#20225)) //<Billy Janitsch>// - **[15df051c9](facebook/react@15df051c9 )**: Add warning if return pointer is inconsistent ([#20219](facebook/react#20219)) //<Andrew Clark>// - **[9aca239f1](facebook/react@9aca239f1 )**: Improved dev experience when DevTools hook is disabled ([#20208](facebook/react#20208)) //<Alphabet Codes>// - **[12627f93b](facebook/react@12627f93b )**: Perform hasOwnProperty check in Relay Flight ([#20220](facebook/react#20220)) //<Sebastian Markbåge>// - **[163199d8c](facebook/react@163199d8c )**: Dedupe module id generation ([#20172](facebook/react#20172)) //<Sebastian Markbåge>// - **[76a6dbcb9](facebook/react@76a6dbcb9 )**: [Flight] Encode Symbols as special rows that can be referenced by models … ([#20171](facebook/react#20171)) //<Sebastian Markbåge>// - **[35e53b465](facebook/react@35e53b465 )**: [Flight] Simplify Relay row protocol ([#20168](facebook/react#20168)) //<Sebastian Markbåge>// - **[16e6dadba](facebook/react@16e6dadba )**: Encode throwing server components as lazy throwing references ([#20217](facebook/react#20217)) //<Sebastian Markbåge>// - **[c896cf961](facebook/react@c896cf961 )**: Set return pointer when reusing current tree ([#20212](facebook/react#20212)) //<Andrew Clark>// - **[089866015](facebook/react@089866015 )**: Add version of scheduler that only swaps MessageChannel for postTask ([#20206](facebook/react#20206)) //<Ricky>// - **[393c452e3](facebook/react@393c452e3 )**: Add "nested-update" phase to Profiler API ([#20163](facebook/react#20163)) //<Brian Vaughn>// - **[13a62feab](facebook/react@13a62feab )**: Fix path for SchedulerFeatureFlags ([#20200](facebook/react#20200)) //<Ricky>// - **[7a73d6a0f](facebook/react@7a73d6a0f )**: (Temporarily) revert unmounting error boundaries changes ([#20147](facebook/react#20147)) //<Brian Vaughn>// - **[c29710a57](facebook/react@c29710a57 )**: fix: useImperativeMethods to useImperativeHandle ([#20194](facebook/react#20194)) //<Jack Works>// - **[f8979e0e2](facebook/react@f8979e0e2 )**: Revert 'Fabric-compatible implementation of feature' and have Fabric noop when setJSResponder is called for now ([#21009](facebook/react#21009)) //<Joshua Gross>// - **[c9f6d0a3a](facebook/react@c9f6d0a3a )**: Sync `ReactNativeTypes` from React Native ([#21015](facebook/react#21015)) //<Timothy Yung>// Changelog: [General][Changed] - React Native sync for revisions c3e20f1...c9f6d0a jest_e2e[run_all_tests] Reviewed By: PeteTheHeat Differential Revision: D27051885 fbshipit-source-id: 5b232f6093f5f2527f3b321bc8b5487934e92d70

…els … (facebook#20171) * Encode Symbols as special rows that can be referenced by models If a symbol was extracted from Symbol.for(...) then we can reliably recreate the same symbol on the client. S123:"react.suspense" M456:{mySymbol: '$123'} This doesn't suffer from the XSS problem because you have to write actual code to create one of these symbols. That problem is only a problem because values pass through common other usages of JSON which are not secure. Since React encodes its built-ins as symbols, we can now use them as long as its props are serializable. Like Suspense. * Refactor resolution to avoid memo hack Going through createElement isn't quite equivalent for ref and key in props. * Reuse symbol ids that have already been written earlier in the stream

sebmarkbage requested review from gaearon and lunaruan November 6, 2020 00:48

facebook-github-bot added CLA Signed React Core Team Opened by a member of the React Core Team labels Nov 6, 2020

sebmarkbage force-pushed the flightsymbols branch from 1ffb19e to 4dd03e3 Compare November 6, 2020 00:52

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gaearon approved these changes Nov 6, 2020

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sebmarkbage force-pushed the flightsymbols branch from 4dd03e3 to 56c3960 Compare November 6, 2020 02:11

sebmarkbage added 3 commits November 10, 2020 22:56

Refactor resolution to avoid memo hack

0236fd7

Going through createElement isn't quite equivalent for ref and key in props.

Reuse symbol ids that have already been written earlier in the stream

4e71e3a

sebmarkbage force-pushed the flightsymbols branch from 56c3960 to 4e71e3a Compare November 11, 2020 03:56

sebmarkbage merged commit 76a6dbc into facebook:master Nov 11, 2020

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[Flight] Encode Symbols as special rows that can be referenced by models … #20171

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[Flight] Encode Symbols as special rows that can be referenced by models … #20171

[Flight] Encode Symbols as special rows that can be referenced by models … #20171

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