chore: upgrade React experimental to 0.0.0-experimental-d5736f09-20260507

[react-server-bot]

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

Previous version: 0.0.0-experimental-561ed529-20260423
New version: 0.0.0-experimental-d5736f09-20260507

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 ✅

[cloudflare-workers-and-pages]

Deploying with    Cloudflare Workers

The latest updates on your project. Learn more about integrating Git with Workers.

Status	Name	Latest Commit	Updated (UTC)
✅ Deployment successful! View logs	react-server-docs	b54e990	May 21 2026, 07:20 AM

[github-actions]

⚡ Flight Protocol Benchmark

Commit: 636d973

Serialization (renderToReadableStream)

Scenario	@lazarv/rsc	webpack	vs webpack
react: minimal element	225.7K	34.2K	🟢 +559.3%
react: shallow wide (1000)	2.3K	338	🟢 +581.9%
react: deep nested (100)	17.3K	5.9K	🟢 +190.9%
react: product list (50)	6.6K	2.1K	🟢 +221.3%
react: large table (500x10)	271	92	🟢 +195.1%
data: primitives	179.6K	47.3K	🟢 +280.0%
data: large string (100KB)	7.2K	6.4K	🟢 +12.6%
data: nested objects (20)	60.8K	28.2K	🟢 +116.1%
data: large array (10K)	127	122	🟢 +3.6%
data: Map & Set	12.3K	6.1K	🟢 +100.1%
data: Date/BigInt/Symbol	167.5K	43.1K	🟢 +288.2%
data: typed arrays	38.6K	13.7K	🟢 +182.5%
data: mixed payload	9.4K	4.3K	🟢 +115.8%

Prerender (prerender)

Scenario	@lazarv/rsc ops/s	mean
react: minimal element	228.1K	4.4 µs
react: shallow wide (1000)	2.0K	488.9 µs
react: deep nested (100)	16.4K	60.9 µs
react: product list (50)	6.3K	159.4 µs
react: large table (500x10)	265	3.77 ms
data: primitives	190.7K	5.2 µs
data: large string (100KB)	645	1.55 ms
data: nested objects (20)	61.0K	16.4 µs
data: large array (10K)	121	8.27 ms
data: Map & Set	12.2K	82.0 µs
data: Date/BigInt/Symbol	179.6K	5.6 µs
data: typed arrays	635	1.57 ms
data: mixed payload	8.1K	123.0 µs

Deserialization (createFromReadableStream)

Scenario	@lazarv/rsc	webpack	vs webpack
react: minimal element	166.6K	145.8K	🟢 +14.2%
react: shallow wide (1000)	23.3K	2.0K	🟢 +1036.7%
react: deep nested (100)	98.8K	19.9K	🟢 +396.4%
react: product list (50)	50.0K	14.8K	🟢 +238.5%
react: large table (500x10)	3.8K	2.1K	🟢 +85.0%
data: primitives	136.3K	136.1K	⚪ +0.1%
data: large string (100KB)	31.7K	38.4K	🔴 -17.3%
data: nested objects (20)	81.3K	71.8K	🟢 +13.3%
data: large array (10K)	265	229	🟢 +15.5%
data: Map & Set	16.4K	14.7K	🟢 +11.6%
data: Date/BigInt/Symbol	139.7K	125.2K	🟢 +11.6%
data: typed arrays	55.3K	47.3K	🟢 +16.8%
data: mixed payload	24.9K	14.9K	🟢 +67.8%

Roundtrip (serialize + deserialize)

Scenario	@lazarv/rsc	webpack	vs webpack
react: minimal element	115.5K	28.0K	🟢 +312.6%
react: shallow wide (1000)	1.7K	289	🟢 +501.3%
react: deep nested (100)	15.1K	4.4K	🟢 +239.9%
react: product list (50)	5.7K	1.7K	🟢 +228.3%
react: large table (500x10)	254	87	🟢 +191.5%
data: primitives	91.9K	35.8K	🟢 +157.1%
data: large string (100KB)	6.1K	6.5K	🔴 -7.0%
data: nested objects (20)	37.0K	21.5K	🟢 +72.6%
data: large array (10K)	84	79	🟢 +5.8%
data: Map & Set	6.8K	4.2K	🟢 +60.1%
data: Date/BigInt/Symbol	87.7K	34.2K	🟢 +156.7%
data: typed arrays	29.1K	12.5K	🟢 +134.1%
data: mixed payload	6.7K	3.3K	🟢 +102.5%

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.

[codecov-commenter]

❌ 3 Tests Failed:

Tests completed	Failed	Passed	Skipped
1123	3	1120	6

View the top 3 failed test(s) by shortest run time

__test__/deno.spec.mjs > create-react-server: deno runtime (pnpm) > preset: blank-ts > starts in production mode

Stack Traces | 0.000799s run time

AssertionError: production start should work: expected false to be true // Object.is equality

- Expected
+ Received

- true
+ false

 ❯ __test__/deno.spec.mjs:74:66

__test__/deno.spec.mjs > create-react-server: deno runtime (pnpm) > preset: blank-ts > builds the app

Stack Traces | 0.00116s run time

AssertionError: build should succeed: expected false to be true // Object.is equality

- Expected
+ Received

- true
+ false

 ❯ __test__/deno.spec.mjs:70:58

__test__/deno.spec.mjs > create-react-server: deno runtime (pnpm) > preset: blank-ts > dev mode starts and serves the app

Stack Traces | 0.00816s run time

AssertionError: dev mode should work: expected false to be true // Object.is equality

- Expected
+ Received

- true
+ false

 ❯ __test__/deno.spec.mjs:66:56

To view more test analytics, go to the Test Analytics Dashboard
_{📋 Got 3 mins? Take this short survey to help us improve Test Analytics.}

[github-actions]

⚡ Benchmark Results

	PR b54e990	main c8e529f
Config	50 connections, 10s/test	50 connections, 10s/test

Benchmark	Req/s	vs main	Avg Latency	vs main	P99 Latency	Throughput
minimal	1332	🟢 +18.3%	36.93 ms	🟢 -15.4%	70 ms	0.9 MB/s
small	1384	🟢 +16.1%	35.52 ms	🟢 -13.9%	61 ms	1.4 MB/s
medium	389	🟢 +6.6%	127.39 ms	🟢 -5.9%	172 ms	5.7 MB/s
large	46	🟢 +4.7%	1048.72 ms	⚪ +0.5%	1922 ms	4.6 MB/s
deep	938	🟢 +5.5%	52.66 ms	🟢 -5.1%	88 ms	3.2 MB/s
wide	69	🟢 +1.9%	684.61 ms	🟢 -3.6%	1313 ms	3.8 MB/s
cached	3485	🟢 +2.9%	13.88 ms	🟢 -2.7%	28 ms	51.2 MB/s
client-min	530	🟢 +20.5%	93.48 ms	🟢 -17.0%	146 ms	2.2 MB/s
client-small	517	🟢 +15.5%	95.55 ms	🟢 -13.6%	151 ms	2.4 MB/s
client-med	371	🟢 +12.1%	133.14 ms	🟢 -10.9%	193 ms	6.8 MB/s
client-large	81	🟢 +6.7%	596.22 ms	🟢 -4.9%	1048 ms	8.5 MB/s
client-deep	506	🟢 +23.0%	97.43 ms	🟢 -18.8%	146 ms	3.6 MB/s
client-wide	139	🟢 +7.2%	347.75 ms	🟢 -7.6%	593 ms	8.1 MB/s
rsc-client-large	1199	🟢 +12.1%	41.08 ms	🟢 -10.9%	62 ms	3.1 MB/s
rsc-client-wide	1234	🟢 +15.8%	39.89 ms	🟢 -13.7%	63 ms	3.1 MB/s
static-json	9745	🟢 +41.1%	4.75 ms	🟢 -29.0%	15 ms	4.1 MB/s
static-js	9634	🟢 +37.6%	4.75 ms	🟢 -27.8%	15 ms	12.1 MB/s
404-miss	5347	🟢 +10.8%	8.93 ms	🟢 -9.2%	18 ms	0.7 MB/s
hybrid-min	514	🟢 +16.8%	96.19 ms	🟢 -14.3%	146 ms	2.4 MB/s
hybrid-small	493	🟢 +15.7%	100.4 ms	🟢 -13.5%	146 ms	2.9 MB/s
hybrid-medium	245	🟢 +10.5%	200.11 ms	🟢 -10.0%	293 ms	10.4 MB/s
hybrid-large	41	🟢 +7.1%	1144.49 ms	🟢 -5.5%	2122 ms	13.3 MB/s
hybrid-deep	396	🟢 +13.2%	125.11 ms	🟢 -11.6%	178 ms	5.4 MB/s
hybrid-wide	61	🟢 +6.9%	789.68 ms	🟢 -4.2%	1305 ms	11.9 MB/s
hybrid-cached	2926	🟢 +8.0%	16.58 ms	🟢 -7.5%	31 ms	124.3 MB/s
hybrid-client-min	552	🟢 +21.6%	89.58 ms	🟢 -17.5%	135 ms	2.4 MB/s
hybrid-client-small	532	🟢 +15.2%	92.99 ms	🟢 -13.2%	136 ms	2.5 MB/s
hybrid-client-medium	386	🟢 +13.9%	128.57 ms	🟢 -12.1%	185 ms	7.1 MB/s
hybrid-client-large	83	🟢 +6.1%	585.62 ms	🟢 -5.5%	1071 ms	8.7 MB/s
hybrid-client-deep	468	🟢 +8.5%	105.67 ms	🟢 -7.8%	160 ms	3.4 MB/s
hybrid-client-wide	139	🟢 +7.5%	355.15 ms	🟢 -5.9%	613 ms	8.1 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.