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Remove unused arguments from ReactElement #34174

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Merged
merged 1 commit into from
Aug 12, 2025
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kassens
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@kassens kassens commented Aug 11, 2025

After various feature flag removals recently, these arguments became unused and can be deleted.

@meta-cla meta-cla bot added the CLA Signed label Aug 11, 2025
@github-actions github-actions bot added the React Core Team Opened by a member of the React Core Team label Aug 11, 2025
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Comparing: ac7820a...7b06483

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.js = 6.68 kB 6.68 kB +0.11% 1.83 kB 1.83 kB
oss-stable/react-dom/cjs/react-dom-client.production.js = 530.16 kB 530.16 kB = 93.39 kB 93.39 kB
oss-experimental/react-dom/cjs/react-dom.production.js = 6.69 kB 6.69 kB +0.11% 1.83 kB 1.83 kB
oss-experimental/react-dom/cjs/react-dom-client.production.js = 654.53 kB 654.53 kB = 115.11 kB 115.11 kB
facebook-www/ReactDOM-prod.classic.js = 674.30 kB 674.30 kB = 118.29 kB 118.29 kB
facebook-www/ReactDOM-prod.modern.js = 664.73 kB 664.73 kB = 116.64 kB 116.64 kB
oss-experimental/react/cjs/react-jsx-dev-runtime.react-server.development.js = 13.18 kB 12.90 kB = 3.47 kB 3.44 kB
oss-experimental/react/cjs/react-jsx-runtime.react-server.development.js = 13.18 kB 12.89 kB = 3.46 kB 3.44 kB
oss-stable-semver/react/cjs/react-jsx-dev-runtime.react-server.development.js = 13.03 kB 12.75 kB = 3.43 kB 3.40 kB
oss-stable/react/cjs/react-jsx-dev-runtime.react-server.development.js = 13.03 kB 12.75 kB = 3.43 kB 3.40 kB
oss-stable-semver/react/cjs/react-jsx-runtime.react-server.development.js = 13.03 kB 12.74 kB = 3.42 kB 3.40 kB
oss-stable/react/cjs/react-jsx-runtime.react-server.development.js = 13.03 kB 12.74 kB = 3.42 kB 3.40 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/cjs/react.development.js = 50.26 kB 50.11 kB = 11.33 kB 11.31 kB
oss-stable/react/cjs/react.development.js = 46.89 kB 46.74 kB = 10.66 kB 10.64 kB
oss-stable-semver/react/cjs/react.development.js = 46.87 kB 46.72 kB = 10.63 kB 10.62 kB
oss-experimental/react/cjs/react.react-server.development.js = 38.00 kB 37.85 kB = 8.96 kB 8.94 kB
oss-experimental/react/cjs/react.production.js = 19.42 kB 19.33 kB = 4.94 kB 4.92 kB
oss-experimental/react/cjs/react.react-server.production.js = 19.03 kB 18.94 kB = 5.02 kB 4.99 kB
oss-stable/react/cjs/react.react-server.development.js = 30.22 kB 30.07 kB = 7.25 kB 7.23 kB
oss-stable-semver/react/cjs/react.react-server.development.js = 30.19 kB 30.04 kB = 7.22 kB 7.20 kB
facebook-www/React-profiling.classic.js = 20.47 kB 20.37 kB = 5.27 kB 5.25 kB
facebook-www/React-profiling.modern.js = 20.47 kB 20.37 kB = 5.27 kB 5.25 kB
oss-stable/react/cjs/react.production.js = 17.07 kB 16.99 kB = 4.43 kB 4.41 kB
oss-stable-semver/react/cjs/react.production.js = 17.05 kB 16.96 kB = 4.41 kB 4.38 kB
facebook-www/React-prod.classic.js = 20.04 kB 19.94 kB = 5.18 kB 5.17 kB
facebook-www/React-prod.modern.js = 20.04 kB 19.93 kB = 5.18 kB 5.17 kB
facebook-react-native/react/cjs/React-profiling.js = 19.58 kB 19.48 kB = 5.04 kB 5.02 kB
facebook-react-native/react/cjs/React-prod.js = 19.15 kB 19.05 kB = 4.96 kB 4.94 kB
oss-stable/react/cjs/react.react-server.production.js = 13.47 kB 13.38 kB = 3.72 kB 3.70 kB
oss-stable-semver/react/cjs/react.react-server.production.js = 13.45 kB 13.36 kB = 3.70 kB 3.67 kB
facebook-www/React-dev.classic.js = 52.74 kB 52.36 kB = 11.77 kB 11.72 kB
facebook-www/React-dev.modern.js = 52.74 kB 52.35 kB = 11.77 kB 11.71 kB
facebook-react-native/react/cjs/React-dev.js = 51.78 kB 51.40 kB = 11.52 kB 11.48 kB
facebook-www/JSXDEVRuntime-dev.classic.js = 12.51 kB 12.31 kB = 3.43 kB 3.42 kB
facebook-www/JSXDEVRuntime-dev.modern.js = 12.51 kB 12.31 kB = 3.43 kB 3.42 kB
facebook-react-native/react/cjs/JSXRuntime-dev.js = 12.41 kB 12.21 kB = 3.34 kB 3.32 kB
oss-experimental/react/cjs/react-jsx-runtime.development.js = 12.33 kB 12.13 kB = 3.33 kB 3.31 kB
oss-stable-semver/react/cjs/react-jsx-runtime.development.js = 12.19 kB 11.99 kB = 3.29 kB 3.27 kB
oss-stable/react/cjs/react-jsx-runtime.development.js = 12.19 kB 11.99 kB = 3.29 kB 3.27 kB
facebook-react-native/react/cjs/JSXDEVRuntime-dev.js = 12.01 kB 11.81 kB = 3.32 kB 3.31 kB
oss-experimental/react/cjs/react-jsx-dev-runtime.development.js = 11.94 kB 11.74 kB = 3.31 kB 3.30 kB
oss-stable-semver/react/cjs/react-jsx-dev-runtime.development.js = 11.79 kB 11.59 kB = 3.27 kB 3.26 kB
oss-stable/react/cjs/react-jsx-dev-runtime.development.js = 11.79 kB 11.59 kB = 3.27 kB 3.26 kB
oss-experimental/react/cjs/react-jsx-dev-runtime.react-server.development.js = 13.18 kB 12.90 kB = 3.47 kB 3.44 kB
oss-experimental/react/cjs/react-jsx-runtime.react-server.development.js = 13.18 kB 12.89 kB = 3.46 kB 3.44 kB
oss-stable-semver/react/cjs/react-jsx-dev-runtime.react-server.development.js = 13.03 kB 12.75 kB = 3.43 kB 3.40 kB
oss-stable/react/cjs/react-jsx-dev-runtime.react-server.development.js = 13.03 kB 12.75 kB = 3.43 kB 3.40 kB
oss-stable-semver/react/cjs/react-jsx-runtime.react-server.development.js = 13.03 kB 12.74 kB = 3.42 kB 3.40 kB
oss-stable/react/cjs/react-jsx-runtime.react-server.development.js = 13.03 kB 12.74 kB = 3.42 kB 3.40 kB

Generated by 🚫 dangerJS against 7b06483

debugStack,
debugTask,
) {
function ReactElement(type, key, owner, props, debugStack, debugTask) {
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@sebmarkbage sebmarkbage Aug 11, 2025

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Since owner is only tracked in DEV, it probably makes sense to put that after props. We do that elsewhere with dev only arguments since Closure Compiler seems better at removing them when they're always the same given some constant.

After various feature flag removals recently, these arguments became unused and can be deleted.
@kassens kassens merged commit 1dc3bde into facebook:main Aug 12, 2025
244 of 245 checks passed
@kassens kassens deleted the pr34174 branch August 12, 2025 15:09
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