chore: upgrade React experimental to 0.0.0-experimental-900ae094-20260605

[react-server-bot]

Automated daily upgrade of React packages to the latest experimental version.

Previous version: 0.0.0-experimental-43bcbf80-20260603
New version: 0.0.0-experimental-900ae094-20260605

Updated locations

• packages/react-server/package.json — react, react-dom, react-is
• package.json — all pnpm.overrides for React
• docs/ — micro-frontends MDX (en + ja) esm.sh URLs
• pnpm-lock.yaml

Smoke test

• Dev mode — hello world test passed ✅
• Build+start mode — hello world test passed ✅

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Status	Name	Latest Commit	Updated (UTC)
✅ Deployment successful! View logs	react-server-docs	ffbb22d	Jun 09 2026, 07:17 AM

[github-actions]

⚡ Flight Protocol Benchmark

Commit: 80882a5

Serialization (renderToReadableStream)

Scenario	@lazarv/rsc	webpack	vs webpack
react: minimal element	256.4K	44.5K	🟢 +476.4%
react: shallow wide (1000)	2.7K	429	🟢 +525.1%
react: deep nested (100)	27.7K	7.3K	🟢 +281.0%
react: product list (50)	7.9K	2.4K	🟢 +231.0%
react: large table (500x10)	426	125	🟢 +240.4%
data: primitives	204.8K	52.0K	🟢 +293.8%
data: large string (100KB)	22.5K	18.0K	🟢 +25.5%
data: nested objects (20)	65.1K	33.7K	🟢 +93.0%
data: large array (10K)	144	119	🟢 +20.7%
data: Map & Set	12.3K	6.4K	🟢 +92.0%
data: Date/BigInt/Symbol	166.4K	44.8K	🟢 +271.5%
data: typed arrays	47.5K	16.8K	🟢 +182.4%
data: mixed payload	7.8K	4.4K	🟢 +78.8%

Prerender (prerender)

Scenario	@lazarv/rsc ops/s	mean
react: minimal element	283.3K	3.6 µs
react: shallow wide (1000)	2.4K	416.7 µs
react: deep nested (100)	25.1K	40.5 µs
react: product list (50)	7.5K	135.2 µs
react: large table (500x10)	396	2.54 ms
data: primitives	226.7K	4.6 µs
data: large string (100KB)	1.0K	981.0 µs
data: nested objects (20)	66.7K	15.3 µs
data: large array (10K)	141	7.12 ms
data: Map & Set	12.3K	82.8 µs
data: Date/BigInt/Symbol	186.7K	5.5 µs
data: typed arrays	813	1.23 ms
data: mixed payload	7.3K	138.3 µs

Deserialization (createFromReadableStream)

Scenario	@lazarv/rsc	webpack	vs webpack
react: minimal element	191.5K	127.3K	🟢 +50.5%
react: shallow wide (1000)	32.8K	2.3K	🟢 +1309.8%
react: deep nested (100)	132.2K	21.6K	🟢 +512.4%
react: product list (50)	67.3K	16.8K	🟢 +301.4%
react: large table (500x10)	4.5K	2.6K	🟢 +71.0%
data: primitives	150.4K	113.9K	🟢 +32.0%
data: large string (100KB)	45.1K	33.0K	🟢 +36.6%
data: nested objects (20)	99.7K	66.6K	🟢 +49.8%
data: large array (10K)	369	300	🟢 +23.0%
data: Map & Set	18.2K	16.0K	🟢 +13.4%
data: Date/BigInt/Symbol	149.1K	96.3K	🟢 +54.9%
data: typed arrays	78.9K	52.5K	🟢 +50.4%
data: mixed payload	26.7K	16.0K	🟢 +66.8%

Roundtrip (serialize + deserialize)

Scenario	@lazarv/rsc	webpack	vs webpack
react: minimal element	129.0K	29.0K	🟢 +344.3%
react: shallow wide (1000)	2.5K	345	🟢 +629.5%
react: deep nested (100)	23.0K	5.3K	🟢 +329.5%
react: product list (50)	7.1K	1.9K	🟢 +269.8%
react: large table (500x10)	374	113	🟢 +230.1%
data: primitives	97.9K	30.5K	🟢 +221.1%
data: large string (100KB)	15.3K	16.5K	🔴 -7.0%
data: nested objects (20)	40.3K	21.7K	🟢 +85.2%
data: large array (10K)	102	87	🟢 +16.5%
data: Map & Set	7.0K	4.5K	🟢 +55.6%
data: Date/BigInt/Symbol	74.7K	26.2K	🟢 +185.7%
data: typed arrays	22.3K	14.2K	🟢 +56.4%
data: mixed payload	5.5K	3.3K	🟢 +69.2%

Legend & methodology

Indicators: 🟢 > 1% faster | 🔴 > 1% slower | ⚪ within noise margin

vs webpack: compares @lazarv/rsc against react-server-dom-webpack within the same run.
vs baseline: compares @lazarv/rsc against the previous main branch run.

Values shown are operations/second (higher is better). Each scenario runs for at least 100 iterations with warmup.

Benchmarks run on GitHub Actions runners (shared infrastructure) — expect ~5% variance between runs. Consistent directional changes across multiple scenarios are more meaningful than any single number.

[github-actions]

⚡ Benchmark Results

	PR ffbb22d	main 5c13f35
Config	50 connections, 10s/test	50 connections, 10s/test

Benchmark	Req/s	vs main	Avg Latency	vs main	P99 Latency	Throughput
minimal	1349	🟢 +2.3%	36.38 ms	🟢 -2.3%	70 ms	0.9 MB/s
small	1300	🔴 -7.1%	37.84 ms	🔴 +7.8%	70 ms	1.3 MB/s
medium	375	🔴 -5.1%	131.77 ms	🔴 +5.7%	176 ms	5.5 MB/s
large	45	🔴 -3.3%	1042.99 ms	🔴 +2.9%	2002 ms	4.6 MB/s
deep	876	🔴 -7.3%	56.28 ms	🔴 +7.8%	86 ms	3.0 MB/s
wide	72	⚪ 0.0%	663.96 ms	⚪ +0.2%	1229 ms	3.9 MB/s
cached	3516	🔴 -3.3%	13.68 ms	🔴 +3.2%	28 ms	51.7 MB/s
client-min	474	⚪ -0.4%	103.91 ms	⚪ +0.4%	165 ms	2.0 MB/s
client-small	482	🔴 -1.3%	102.56 ms	🔴 +1.2%	155 ms	2.2 MB/s
client-med	349	🔴 -2.9%	142.04 ms	🔴 +3.0%	207 ms	6.4 MB/s
client-large	79	⚪ +0.0%	612.75 ms	⚪ -0.2%	1106 ms	8.3 MB/s
client-deep	425	🔴 -6.9%	115.89 ms	🔴 +7.6%	175 ms	3.0 MB/s
client-wide	127	🔴 -6.6%	387.22 ms	🔴 +7.4%	657 ms	7.4 MB/s
rsc-client-large	1117	🔴 -2.8%	44.09 ms	🔴 +3.1%	64 ms	2.9 MB/s
rsc-client-wide	1095	🔴 -3.1%	44.95 ms	🔴 +3.3%	68 ms	2.8 MB/s
static-json	8205	🟢 +12.2%	5.43 ms	🟢 -14.1%	13 ms	3.4 MB/s
static-js	7650	🟢 +5.7%	5.94 ms	🟢 -7.2%	13 ms	9.6 MB/s
404-miss	4888	🔴 -4.5%	9.72 ms	🔴 +3.8%	22 ms	0.6 MB/s
hybrid-min	440	🔴 -4.2%	112.07 ms	🔴 +4.1%	174 ms	2.1 MB/s
hybrid-small	432	🔴 -2.4%	113.94 ms	🔴 +2.0%	166 ms	2.5 MB/s
hybrid-medium	240	⚪ +1.0%	206.05 ms	⚪ -0.5%	294 ms	10.2 MB/s
hybrid-large	40	⚪ -0.2%	1139.27 ms	⚪ -0.4%	2073 ms	13.0 MB/s
hybrid-deep	371	🟢 +1.0%	133.5 ms	⚪ -0.7%	183 ms	5.1 MB/s
hybrid-wide	59	🔴 -3.9%	780.97 ms	🔴 +2.1%	1390 ms	11.7 MB/s
hybrid-cached	3092	🟢 +1.5%	15.63 ms	🟢 -1.5%	30 ms	131.5 MB/s
hybrid-client-min	489	🔴 -2.6%	101.08 ms	🔴 +2.8%	158 ms	2.1 MB/s
hybrid-client-small	486	🔴 -2.4%	101.42 ms	🔴 +2.5%	151 ms	2.3 MB/s
hybrid-client-medium	341	🔴 -4.6%	144.02 ms	🔴 +4.3%	210 ms	6.3 MB/s
hybrid-client-large	75	🔴 -4.0%	639.38 ms	🔴 +4.1%	1242 ms	7.8 MB/s
hybrid-client-deep	444	🔴 -4.3%	111.29 ms	🔴 +4.2%	155 ms	3.2 MB/s
hybrid-client-wide	135	🔴 -2.2%	362.17 ms	🔴 +2.2%	697 ms	7.9 MB/s

Legend

🟢 > 1% improvement | 🔴 > 1% regression | ⚪ within noise margin

Benchmarks run on GitHub Actions runners (shared infrastructure) — expect ~5% variance between runs. Consistent directional changes across multiple routes are more meaningful than any single number.