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Make class prop resolution faster #28766

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merged 1 commit into from
Apr 5, 2024

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@acdlite acdlite commented Apr 5, 2024

delete causes an object (in V8, and maybe other engines) to deopt to a dictionary instead of a class. Instead of assign + delete, manually iterate over all the properties, like the JSX runtime does.

To avoid copying the object twice I moved the ref prop removal to come before handling default props. If we already cloned the props to remove ref, then we can skip cloning again to handle default props.

@acdlite acdlite requested a review from sebmarkbage April 5, 2024 15:33
@facebook-github-bot facebook-github-bot added CLA Signed React Core Team Opened by a member of the React Core Team labels Apr 5, 2024
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react-sizebot commented Apr 5, 2024

Comparing: e3ebcd5...1c6dac7

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 +0.01% 168.88 kB 168.90 kB = 52.69 kB 52.69 kB
oss-experimental/react-dom/cjs/react-dom.production.min.js +0.01% 170.69 kB 170.71 kB = 53.23 kB 53.24 kB
facebook-www/ReactDOM-prod.classic.js +0.01% 590.15 kB 590.23 kB +0.02% 103.60 kB 103.62 kB
facebook-www/ReactDOM-prod.modern.js +0.01% 566.48 kB 566.56 kB +0.01% 99.56 kB 99.57 kB
test_utils/ReactAllWarnings.js Deleted 64.04 kB 0.00 kB Deleted 16.02 kB 0.00 kB

Significant size changes

Includes any change greater than 0.2%:

Expand to show
Name +/- Base Current +/- gzip Base gzip Current gzip
oss-stable-semver/react-server/cjs/react-server.production.js +0.25% 155.01 kB 155.40 kB +0.28% 36.57 kB 36.67 kB
oss-stable/react-server/cjs/react-server.production.js +0.25% 155.01 kB 155.40 kB +0.28% 36.57 kB 36.67 kB
oss-experimental/react-server/cjs/react-server.production.js +0.23% 166.51 kB 166.90 kB +0.26% 38.51 kB 38.61 kB
test_utils/ReactAllWarnings.js Deleted 64.04 kB 0.00 kB Deleted 16.02 kB 0.00 kB

Generated by 🚫 dangerJS against 1c6dac7

@@ -1251,32 +1251,39 @@ export function resolveClassComponentProps(
): Object {
let newProps = baseProps;
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You can just be explicit here with the types, Object is just an alias for any.

Suggested change
let newProps = baseProps;
let newProps: any = baseProps;

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Then the typeof newProps below can be removed.

@acdlite acdlite force-pushed the make-class-prop-resolution-faster branch 3 times, most recently from 5c1f1f1 to 1ab1e79 Compare April 5, 2024 16:33
`delete` causes an object (in V8, and maybe other engines) to deopt to
a dictionary instead of a class. Instead of `assign` + `delete`,
manually iterate over all the properties, like the JSX runtime does.

To avoid copying the object twice I moved the `ref` prop removal to
come before handling default props. If we already cloned the props to
remove `ref`, then we can skip cloning again to handle default props.
@acdlite acdlite force-pushed the make-class-prop-resolution-faster branch from 1ab1e79 to 1c6dac7 Compare April 5, 2024 16:38
@acdlite acdlite merged commit bfd8da8 into facebook:main Apr 5, 2024
38 checks passed
github-actions bot pushed a commit that referenced this pull request Apr 5, 2024
`delete` causes an object (in V8, and maybe other engines) to deopt to a
dictionary instead of a class. Instead of `assign` + `delete`, manually
iterate over all the properties, like the JSX runtime does.

To avoid copying the object twice I moved the `ref` prop removal to come
before handling default props. If we already cloned the props to remove
`ref`, then we can skip cloning again to handle default props.

DiffTrain build for [bfd8da8](bfd8da8)
rickhanlonii pushed a commit that referenced this pull request Apr 11, 2024
`delete` causes an object (in V8, and maybe other engines) to deopt to a
dictionary instead of a class. Instead of `assign` + `delete`, manually
iterate over all the properties, like the JSX runtime does.

To avoid copying the object twice I moved the `ref` prop removal to come
before handling default props. If we already cloned the props to remove
`ref`, then we can skip cloning again to handle default props.
rickhanlonii pushed a commit that referenced this pull request Apr 11, 2024
`delete` causes an object (in V8, and maybe other engines) to deopt to a
dictionary instead of a class. Instead of `assign` + `delete`, manually
iterate over all the properties, like the JSX runtime does.

To avoid copying the object twice I moved the `ref` prop removal to come
before handling default props. If we already cloned the props to remove
`ref`, then we can skip cloning again to handle default props.
EdisonVan pushed a commit to EdisonVan/react that referenced this pull request Apr 15, 2024
`delete` causes an object (in V8, and maybe other engines) to deopt to a
dictionary instead of a class. Instead of `assign` + `delete`, manually
iterate over all the properties, like the JSX runtime does.

To avoid copying the object twice I moved the `ref` prop removal to come
before handling default props. If we already cloned the props to remove
`ref`, then we can skip cloning again to handle default props.
bigfootjon pushed a commit that referenced this pull request Apr 18, 2024
`delete` causes an object (in V8, and maybe other engines) to deopt to a
dictionary instead of a class. Instead of `assign` + `delete`, manually
iterate over all the properties, like the JSX runtime does.

To avoid copying the object twice I moved the `ref` prop removal to come
before handling default props. If we already cloned the props to remove
`ref`, then we can skip cloning again to handle default props.

DiffTrain build for commit bfd8da8.
facebook-github-bot pushed a commit to facebook/react-native that referenced this pull request Apr 19, 2024
Summary:
This sync includes the changes from:
- D56103750
- [TODO] A shim for SECRET_INTERNALS

This sync includes the following changes:
- **[b5e5ce8e0](facebook/react@b5e5ce8e0 )**: Update ReactNativeTypes for root options (part 2) ([#28857](facebook/react#28857)) //<Ricky>//
- **[da6ba53b1](facebook/react@da6ba53b1 )**: [UMD] Remove umd builds ([#28735](facebook/react#28735)) //<Josh Story>//
- **[0c245df1d](facebook/react@0c245df1d )**: Complete the typo fix ([#28856](facebook/react#28856)) //<Sebastian Silbermann>//
- **[f82051d7a](facebook/react@f82051d7a )**: console test utils fix: match entire string, not just first letter ([#28855](facebook/react#28855)) //<Andrew Clark>//
- **[4ca20fd36](facebook/react@4ca20fd36 )**: Test top level fragment inside lazy semantics ([#28852](facebook/react#28852)) //<Sebastian Markbåge>//
- **[c0cf7c696](facebook/react@c0cf7c696 )**: Promote ASYNC_ITERATOR symbol to React Symbols ([#28851](facebook/react#28851)) //<Sebastian Markbåge>//
- **[657428a9e](facebook/react@657428a9e )**: Add ReactNativeTypes for root options ([#28850](facebook/react#28850)) //<Ricky>//
- **[7909d8eab](facebook/react@7909d8eab )**: [Flight] Encode ReadableStream and AsyncIterables ([#28847](facebook/react#28847)) //<Sebastian Markbåge>//
- **[13eb61d05](facebook/react@13eb61d05 )**: Move enableUseDeferredValueInitialArg to canary ([#28818](facebook/react#28818)) //<Andrew Clark>//
- **[8afa144bd](facebook/react@8afa144bd )**: Enable flag disableClientCache ([#28846](facebook/react#28846)) //<Jan Kassens>//
- **[734956ace](facebook/react@734956ace )**: Devtools: Add support for useFormStatus ([#28413](facebook/react#28413)) //<Sebastian Silbermann>//
- **[17e920c00](facebook/react@17e920c00 )**: [Flight Reply] Encode Typed Arrays and Blobs ([#28819](facebook/react#28819)) //<Sebastian Markbåge>//
- **[0347fcd00](facebook/react@0347fcd00 )**: Add on(Caught|Uncaught|Recoverable) opts to RN ([#28836](facebook/react#28836)) //<Ricky>//
- **[c113503ad](facebook/react@c113503ad )**: Flush direct streams in Bun ([#28837](facebook/react#28837)) //<Kenta Iwasaki>//
- **[9defcd56b](facebook/react@9defcd56b )**: Remove redundant props assign ([#28829](facebook/react#28829)) //<Sebastian Silbermann>//
- **[ed4023603](facebook/react@ed4023603 )**: Fix mistaken "react-server" condition ([#28835](facebook/react#28835)) //<Sebastian Markbåge>//
- **[c8a035036](facebook/react@c8a035036 )**: [Fizz] hoistables should never flush before the preamble ([#28802](facebook/react#28802)) //<Josh Story>//
- **[4f5c812a3](facebook/react@4f5c812a3 )**: DevTools: Rely on sourcemaps to compute hook name of built-in hooks in newer versions ([#28593](facebook/react#28593)) //<Sebastian Silbermann>//
- **[435415962](facebook/react@435415962 )**: Backwards compatibility for string refs on WWW ([#28826](facebook/react#28826)) //<Jack Pope>//
- **[608edcc90](facebook/react@608edcc90 )**: [tests] add `assertConsole<method>Dev` helpers ([#28732](facebook/react#28732)) //<Ricky>//
- **[da69b6af9](facebook/react@da69b6af9 )**: ReactDOM.requestFormReset  ([#28809](facebook/react#28809)) //<Andrew Clark>//
- **[374b5d26c](facebook/react@374b5d26c )**: Scaffolding for requestFormReset API ([#28808](facebook/react#28808)) //<Andrew Clark>//
- **[41950d14a](facebook/react@41950d14a )**: Automatically reset forms after action finishes ([#28804](facebook/react#28804)) //<Andrew Clark>//
- **[dc6a7e01e](facebook/react@dc6a7e01e )**: [Float] Don't preload images inside `<noscript>` ([#28815](facebook/react#28815)) //<Josh Story>//
- **[3f947b1b4](facebook/react@3f947b1b4 )**: [tests] Assert scheduler log empty in internalAct ([#28737](facebook/react#28737)) //<Ricky>//
- **[bf09089f6](facebook/react@bf09089f6 )**: Remove Scheduler.log from ReactSuspenseFuzz-test ([#28812](facebook/react#28812)) //<Ricky>//
- **[84cb3b4cb](facebook/react@84cb3b4cb )**: Hardcode disableIEWorkarounds for www ([#28811](facebook/react#28811)) //<Ricky>//
- **[2243b40ab](facebook/react@2243b40ab )**: [tests] assertLog before act in useEffectEvent ([#28763](facebook/react#28763)) //<Ricky>//
- **[dfc64c6e3](facebook/react@dfc64c6e3 )**: [tests] assertLog before act in ReactUse ([#28762](facebook/react#28762)) //<Ricky>//
- **[42eff4bc7](facebook/react@42eff4bc7 )**: [tests] Fix assertions not flushed before act ([#28745](facebook/react#28745)) //<Ricky>//
- **[ed3c65caf](facebook/react@ed3c65caf )**: Warn if outdated JSX transform is detected ([#28781](facebook/react#28781)) //<Andrew Clark>//
- **[3f9e237a2](facebook/react@3f9e237a2 )**: Fix: Suspend while recovering from hydration error ([#28800](facebook/react#28800)) //<Andrew Clark>//
- **[7f5d25e23](facebook/react@7f5d25e23 )**: Fix cloneElement using string ref w no owner ([#28797](facebook/react#28797)) //<Joseph Savona>//
- **[bf40b0244](facebook/react@bf40b0244 )**: [Fizz] Stop publishing external-runtime to stable channel ([#28796](facebook/react#28796)) //<Josh Story>//
- **[7f93cb41c](facebook/react@7f93cb41c )**: [DOM] Infer react-server entries bundles if not explicitly configured ([#28795](facebook/react#28795)) //<Josh Story>//
- **[f61316535](facebook/react@f61316535 )**: Rename SECRET INTERNALS to `__CLIENT_INTERNALS_DO_NOT_USE_OR_WARN_USERS_THEY_CANNOT_UPGRADE` ([#28789](facebook/react#28789)) //<Sebastian Markbåge>//
- **[9644d206e](facebook/react@9644d206e )**: Soften useFormState warning ([#28788](facebook/react#28788)) //<Ricky>//
- **[c771016e1](facebook/react@c771016e1 )**: Rename The Secret Export of Server Internals ([#28786](facebook/react#28786)) //<Sebastian Markbåge>//
- **[d50323eb8](facebook/react@d50323eb8 )**: Flatten ReactSharedInternals ([#28783](facebook/react#28783)) //<Sebastian Markbåge>//
- **[f62cf8c62](facebook/react@f62cf8c62 )**: [Float] treat `props.async` in Float consistent with the rest of react-dom ([#26760](facebook/react#26760)) //<Josh Story>//
- **[dfd3d5af8](facebook/react@dfd3d5af8 )**: Add support for transition{run,start,cancel} events ([#27345](facebook/react#27345)) //<Hugo Sales>//
- **[1f8327f83](facebook/react@1f8327f83 )**: [Fiber] Use real event priority for hydration scheduling ([#28765](facebook/react#28765)) //<Josh Story>//
- **[97c90ed88](facebook/react@97c90ed88 )**: [DOM] Shrink ReactDOMCurrentDispatcher method names ([#28770](facebook/react#28770)) //<Josh Story>//
- **[9007fdc8f](facebook/react@9007fdc8f )**: [DOM] Shrink ReactDOMSharedInternals source representation ([#28771](facebook/react#28771)) //<Josh Story>//
- **[14f50ad15](facebook/react@14f50ad15 )**: [Flight] Allow lazily resolving outlined models ([#28780](facebook/react#28780)) //<Sebastian Markbåge>//
- **[4c12339ce](facebook/react@4c12339ce )**: [DOM] move `flushSync` out of the reconciler ([#28500](facebook/react#28500)) //<Josh Story>//
- **[8e1462e8c](facebook/react@8e1462e8c )**: [Fiber] Move updatePriority tracking to renderers ([#28751](facebook/react#28751)) //<Josh Story>//
- **[0b3b8a6a3](facebook/react@0b3b8a6a3 )**: jsx: Remove unnecessary hasOwnProperty check ([#28775](facebook/react#28775)) //<Andrew Clark>//
- **[2acfb7b60](facebook/react@2acfb7b60 )**: [Flight] Support FormData from Server to Client ([#28754](facebook/react#28754)) //<Sebastian Markbåge>//
- **[d1547defe](facebook/react@d1547defe )**: Fast JSX: Don't clone props object ([#28768](facebook/react#28768)) //<Andrew Clark>//
- **[bfd8da807](facebook/react@bfd8da807 )**: Make class prop resolution faster ([#28766](facebook/react#28766)) //<Andrew Clark>//
- **[cbb6f2b54](facebook/react@cbb6f2b54 )**: [Flight] Support Blobs from Server to Client ([#28755](facebook/react#28755)) //<Sebastian Markbåge>//
- **[f33a6b69c](facebook/react@f33a6b69c )**: Track Owner for Server Components in DEV ([#28753](facebook/react#28753)) //<Sebastian Markbåge>//
- **[e3ebcd54b](facebook/react@e3ebcd54b )**: Move string ref coercion to JSX runtime ([#28473](facebook/react#28473)) //<Andrew Clark>//
- **[fd0da3eef](facebook/react@fd0da3eef )**: Remove _owner field from JSX elements in prod if string refs are disabled ([#28739](facebook/react#28739)) //<Sebastian Markbåge>//

Changelog:
[General][Changed] - React Native sync for revisions 48b4ecc...b5e5ce8

jest_e2e[run_all_tests]
bypass-github-export-checks

Reviewed By: kassens

Differential Revision: D56251607

fbshipit-source-id: e16db2fa101fc7ed1e009158c76388206beabd5f
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