Test WebAssembly memory buffer types by jakebailey · Pull Request #65437 · microsoft/TypeScript

Jake Bailey (jakebailey) · 2026-11-11T00:02:20Z

See microsoft/TypeScript-DOM-lib-generator#2592

Shared WebAssembly memories can expose SharedArrayBuffer rather than ArrayBuffer. Mirror microsoft/TypeScript-DOM-lib-generator#2592 so shared buffers can be narrowed correctly.

Jake Bailey (jakebailey) · 2026-11-11T00:03:12Z

TypeScript Bot (@typescript-bot) run dt
TypeScript Bot (@typescript-bot) user test this
TypeScript Bot (@typescript-bot) test top1000
TypeScript Bot (@typescript-bot) perf test this faster

typescript-automation · 2026-11-11T00:03:18Z

Starting jobs; this comment will be updated as builds start and complete.

Command	Status	Results
`run dt`	✅ Started	👀 Results
`user test this`	✅ Started	✅ Results
`test top1000`	✅ Started	👀 Results
`perf test this faster`	✅ Started	👀 Results

typescript-automation · 2026-11-11T00:27:26Z

Hey Jake Bailey (@jakebailey), the results of running the DT tests are ready.

There were interesting changes:

Branch only errors: blake2b-wasm

Package: blake2b-wasm

Branch error:

Project scope: tsconfig.json

Error: types/blake2b-wasm/blake2b-wasm-tests.ts:61:5
TypeScript@local expected type to be:
  Memory
got:
  Memory<ArrayBufferLike>
    at combineErrorsAndWarnings (/mnt/vss/_work/1/s/DefinitelyTyped-tools/packages/dtslint/dist/index.js:200:28)
    at runTests (/mnt/vss/_work/1/s/DefinitelyTyped-tools/packages/dtslint/dist/index.js:192:20)

Branch only errors: sha256-wasm

Package: sha256-wasm

Branch error:

Project scope: tsconfig.json

Error: types/sha256-wasm/sha256-wasm-tests.ts:17:5
TypeScript@local expected type to be:
  Memory
got:
  Memory<ArrayBufferLike>
    at combineErrorsAndWarnings (/mnt/vss/_work/1/s/DefinitelyTyped-tools/packages/dtslint/dist/index.js:200:28)
    at runTests (/mnt/vss/_work/1/s/DefinitelyTyped-tools/packages/dtslint/dist/index.js:192:20)

Branch only errors: sha512-wasm

Package: sha512-wasm

Branch error:

Project scope: tsconfig.json

Error: types/sha512-wasm/sha512-wasm-tests.ts:30:5
TypeScript@local expected type to be:
  Memory
got:
  Memory<ArrayBufferLike>
    at combineErrorsAndWarnings (/mnt/vss/_work/1/s/DefinitelyTyped-tools/packages/dtslint/dist/index.js:200:28)
    at runTests (/mnt/vss/_work/1/s/DefinitelyTyped-tools/packages/dtslint/dist/index.js:192:20)

Full output in the log.

typescript-automation · 2026-11-11T00:31:45Z

Jake Bailey (@jakebailey) Here are the results of running the user tests with tsc comparing baseline and pr:

Everything looks good!

typescript-automation · 2026-11-11T00:38:19Z

Jake Bailey (@jakebailey)
The results of the perf run you requested are in!

Here they are:

tsc

Comparison Report - baseline..pr

_Metric	_baseline	_pr	_Delta	_Best	_Worst	_p-value
_{Compiler-Unions - native}
_Errors	₄₁	₄₁	_~	_~	_~	_{p=1.000 n=40}
_Symbols	_88,466	_88,466	_~	_~	_~	_{p=1.000 n=40}
_Types	_79,607	_79,607	_~	_~	_~	_{p=1.000 n=40}
_{Memory Used}	_{106,401k (± 0.02%)}	_{106,401k (± 0.02%)}	_~	_106,244k	_106,516k	_{p=0.831 n=40}
_{Memory Allocs}	_{1,261,753 (± 0.00%)}	_{1,261,788 (± 0.01%)}	_~	_1,260,678	_1,262,272	_{p=0.375 n=40}
_{Config Time}	_0.000s	_0.000s	_~	_~	_~	_{p=1.000 n=40}
_{Parse Time}	_{0.021s (± 2.82%)}	_{0.022s (± 2.25%)}	_~	_0.018s	_0.029s	_{p=0.279 n=40}
_{Bind Time}	_{0.008s (± 3.77%)}	_{0.008s (± 3.56%)}	_~	_0.007s	_0.011s	_{p=0.370 n=40}
_{Check Time}	_{0.206s (± 0.61%)}	_{0.206s (± 0.55%)}	_~	_0.200s	_0.215s	_{p=0.695 n=40}
_{Emit Time}	_{0.135s (± 0.97%)}	_{0.136s (± 0.82%)}	_~	_0.131s	_0.144s	_{p=0.268 n=40}
_{Total Time}	_{0.374s (± 0.48%)}	_{0.375s (± 0.46%)}	_~	_0.367s	_0.391s	_{p=0.365 n=40}
_{angular-1 - native}
_Errors	₆₃	₆₃	_~	_~	_~	_{p=1.000 n=40}
_Symbols	_756,637	_756,649	_{+12 (+ 0.00%)}	_~	_~	_{p=0.000 n=40}
_Types	_549,451	_549,451	_~	_~	_~	_{p=1.000 n=40}
_{Memory Used}	_{643,946k (± 0.01%)}	_{643,873k (± 0.01%)}	_~	_643,368k	_644,319k	_{p=0.216 n=40}
_{Memory Allocs}	_{9,491,818 (± 0.02%)}	_{9,493,622 (± 0.03%)}	_~	_9,487,232	_9,541,852	_{p=0.931 n=40}
_{Config Time}	_{0.007s (± 1.16%)}	_{0.007s (± 0.71%)}	_~	_0.006s	_0.007s	_{p=0.424 n=40}
_{Parse Time}	_{0.119s (± 2.23%)}	_{0.123s (± 3.21%)}	_~	_0.108s	_0.163s	_{p=0.253 n=40}
_{Bind Time}	_{0.042s (± 6.34%)}	_{0.043s (± 7.21%)}	_~	_0.035s	_0.066s	_{p=0.294 n=40}
_{Check Time}	_{0.654s (± 0.79%)}	_{0.650s (± 0.79%)}	_~	_0.604s	_0.685s	_{p=0.301 n=40}
_{Emit Time}	_{0.406s (± 0.72%)}	_{0.403s (± 0.54%)}	_~	_0.387s	_0.416s	_{p=0.261 n=40}
_{Total Time}	_{1.241s (± 0.52%)}	_{1.239s (± 0.47%)}	_~	_1.186s	_1.283s	_{p=0.646 n=40}
_{arktype - native}
_Errors	₀	₀	_~	_~	_~	_{p=1.000 n=40}
_Symbols	_686,116	_686,116	_~	_~	_~	_{p=1.000 n=40}
_Types	_939,797	_939,797	_~	_~	_~	_{p=1.000 n=40}
_{Memory Used}	_{475,979k (± 0.01%)}	_{475,935k (± 0.01%)}	_~	_475,597k	_476,319k	_{p=0.162 n=40}
_{Memory Allocs}	_{12,050,097 (± 0.01%)}	_{12,051,559 (± 0.01%)}	_~	_12,046,656	_12,073,092	_{p=0.545 n=40}
_{Config Time}	_0.001s	_0.001s	_~	_~	_~	_{p=1.000 n=40}
_{Parse Time}	_{0.043s (± 1.84%)}	_{0.043s (± 2.15%)}	_~	_0.037s	_0.049s	_{p=0.945 n=40}
_{Bind Time}	_{0.013s (± 5.74%)}	_{0.013s (± 4.98%)}	_~	_0.011s	_0.019s	_{p=0.194 n=40}
_{Check Time}	_{0.868s (± 0.58%)}	_{0.859s (± 0.37%)}	_{-0.007s (- 0.84%)}	_0.834s	_0.880s	_{p=0.008 n=40}
_{Emit Time}	_0.000s	_0.000s	_~	_~	_~	_{p=1.000 n=40}
_{Total Time}	_{0.951s (± 0.53%)}	_{0.942s (± 0.35%)}	_{-0.008s (- 0.82%)}	_0.915s	_0.966s	_{p=0.004 n=40}
_{class-transformer - native}
_Errors	₀	₀	_~	_~	_~	_{p=1.000 n=40}
_Symbols	_45,376	_45,376	_~	_~	_~	_{p=1.000 n=40}
_Types	_7,573	_7,573	_~	_~	_~	_{p=1.000 n=40}
_{Memory Used}	_{27,741k (± 0.02%)}	_{27,741k (± 0.01%)}	_~	_27,716k	_27,766k	_{p=0.868 n=40}
_{Memory Allocs}	_{247,736 (± 0.03%)}	_{247,727 (± 0.04%)}	_~	_247,006	_248,502	_{p=0.785 n=40}
_{Config Time}	_{0.001s (±19.91%)}	_{0.001s (±15.13%)}	_~	_0.000s	_0.001s	_{p=0.179 n=40}
_{Parse Time}	_{0.011s (± 2.34%)}	_{0.011s (± 2.62%)}	_~	_0.009s	_0.013s	_{p=0.975 n=40}
_{Bind Time}	_{0.003s (± 7.71%)}	_{0.003s (± 7.65%)}	_~	_0.002s	_0.005s	_{p=0.379 n=40}
_{Check Time}	_{0.007s (± 3.76%)}	_{0.008s (± 4.26%)}	_~	_0.006s	_0.010s	_{p=0.915 n=40}
_{Emit Time}	_{0.007s (± 4.95%)}	_{0.007s (± 5.46%)}	_~	_0.006s	_0.010s	_{p=0.298 n=40}
_{Total Time}	_{0.031s (± 1.42%)}	_{0.030s (± 1.42%)}	_~	_0.026s	_0.033s	_{p=0.572 n=40}
_{effect - native}
_Errors	₁₂	₁₂	_~	_~	_~	_{p=1.000 n=40}
_Symbols	_1,235,134	_1,235,142	_{+8 (+ 0.00%)}	_~	_~	_{p=0.000 n=40}
_Types	_893,436	_893,436	_~	_~	_~	_{p=1.000 n=40}
_{Memory Used}	_{941,366k (± 0.01%)}	_{941,340k (± 0.02%)}	_~	_940,697k	_942,369k	_{p=0.485 n=40}
_{Memory Allocs}	_{12,592,957 (± 0.04%)}	_{12,590,930 (± 0.04%)}	_~	_12,575,898	_12,645,315	_{p=0.675 n=40}
_{Config Time}	_{0.002s (± 9.62%)}	_{0.002s (± 4.90%)}	_~	_0.002s	_0.004s	_{p=0.357 n=40}
_{Parse Time}	_{0.157s (± 2.47%)}	_{0.154s (± 1.39%)}	_~	_0.140s	_0.171s	_{p=0.298 n=40}
_{Bind Time}	_0.000s	_0.000s	_~	_~	_~	_{p=1.000 n=40}
_{Check Time}	_{0.906s (± 0.82%)}	_{0.905s (± 0.86%)}	_~	_0.860s	_0.977s	_{p=0.521 n=40}
_{Emit Time}	_{0.517s (± 2.50%)}	_{0.506s (± 1.64%)}	_~	_0.450s	_0.577s	_{p=0.139 n=40}
_{Total Time}	_{1.681s (± 0.99%)}	_{1.664s (± 0.70%)}	_~	_1.567s	_1.750s	_{p=0.064 n=40}
_{mui-docs - native}
_Errors	_11,405	_11,405	_~	_~	_~	_{p=1.000 n=40}
_Symbols	_3,782,394	_4,039,742	_{🔻+257,348 (+ 6.80%)}	_~	_~	_{p=0.000 n=40}
_Types	_1,355,778	_1,432,337	_{🔻+76,559 (+ 5.65%)}	_~	_~	_{p=0.000 n=40}
_{Memory Used}	_{1,677,719k (± 0.05%)}	_{1,787,225k (± 0.05%)}	_{🔻+109,507k (+ 6.53%)}	_1,779,546k	_1,793,061k	_{p=0.000 n=40}
_{Memory Allocs}	_{25,519,567 (± 0.04%)}	_{26,978,509 (± 0.05%)}	_{🔻+1,457,464 (+ 5.71%)}	_26,877,815	_27,079,371	_{p=0.000 n=40}
_{Config Time}	_{0.006s (± 2.01%)}	_{0.006s (± 1.84%)}	_~	_0.006s	_0.007s	_{p=0.832 n=40}
_{Parse Time}	_{0.271s (± 2.01%)}	_{0.272s (± 1.80%)}	_~	_0.240s	_0.308s	_{p=0.476 n=40}
_{Bind Time}	_0.001s	_0.001s	_~	_~	_~	_{p=1.000 n=40}
_{Check Time}	_{2.924s (± 0.87%)}	_{3.073s (± 0.67%)}	_{🔻+0.156s (+ 5.34%)}	_2.956s	_3.234s	_{p=0.000 n=40}
_{Emit Time}	_{0.251s (± 1.01%)}	_{0.250s (± 1.44%)}	_~	_0.232s	_0.295s	_{p=0.142 n=40}
_{Total Time}	_{3.947s (± 0.83%)}	_{4.098s (± 0.60%)}	_{🔻+0.163s (+ 4.12%)}	_3.949s	_4.272s	_{p=0.000 n=40}
_{sentry - native}
_Errors	₂	₂	_~	_~	_~	_{p=1.000 n=40}
_Symbols	_4,793,266	_4,737,739	_{-55,527 (- 1.16%)}	_~	_~	_{p=0.000 n=40}
_Types	_2,607,066	_2,571,433	_{-35,633 (- 1.37%)}	_~	_~	_{p=0.000 n=40}
_{Memory Used}	_{2,797,445k (± 0.02%)}	_{2,764,939k (± 0.03%)}	_{-32,705k (- 1.17%)}	_2,761,161k	_2,775,662k	_{p=0.000 n=40}
_{Memory Allocs}	_{74,621,582 (± 0.07%)}	_{74,181,025 (± 0.05%)}	_{-419,883 (- 0.56%)}	_73,860,975	_74,380,817	_{p=0.000 n=40}
_{Config Time}	_{0.018s (± 0.98%)}	_{0.017s (± 0.88%)}	_~	_0.017s	_0.018s	_{p=0.419 n=40}
_{Parse Time}	_{0.458s (± 3.95%)}	_{0.458s (± 2.72%)}	_~	_0.403s	_0.586s	_{p=0.527 n=40}
_{Bind Time}	_{0.149s (± 7.30%)}	_{0.141s (± 6.53%)}	_~	_0.118s	_0.217s	_{p=0.286 n=40}
_{Check Time}	_{6.408s (± 0.51%)}	_{6.419s (± 0.55%)}	_~	_6.218s	_6.742s	_{p=0.476 n=40}
_{Emit Time}	_0.000s	_0.000s	_~	_~	_~	_{p=1.000 n=40}
_{Total Time}	_{7.083s (± 0.49%)}	_{7.086s (± 0.51%)}	_~	_6.893s	_7.450s	_{p=0.684 n=40}
_{social-app - native}
_Errors	₀	₀	_~	_~	_~	_{p=1.000 n=40}
_Symbols	_1,883,060	_1,883,064	_{+4 (+ 0.00%)}	_~	_~	_{p=0.000 n=40}
_Types	_1,158,093	_1,158,093	_~	_~	_~	_{p=1.000 n=40}
_{Memory Used}	_{952,272k (± 0.01%)}	_{952,301k (± 0.01%)}	_~	_951,258k	_953,493k	_{p=0.590 n=40}
_{Memory Allocs}	_{13,403,774 (± 0.08%)}	_{13,414,834 (± 0.11%)}	_~	_13,356,949	_13,537,757	_{p=0.232 n=40}
_{Config Time}	_{0.006s (± 3.71%)}	_{0.006s (± 3.35%)}	_~	_0.005s	_0.008s	_{p=0.703 n=40}
_{Parse Time}	_{0.157s (± 4.53%)}	_{0.153s (± 2.56%)}	_~	_0.137s	_0.193s	_{p=0.518 n=40}
_{Bind Time}	_{0.043s (± 7.00%)}	_{0.044s (± 6.96%)}	_~	_0.035s	_0.071s	_{p=0.969 n=40}
_{Check Time}	_{1.418s (± 0.99%)}	_{1.408s (± 0.75%)}	_~	_1.353s	_1.537s	_{p=0.277 n=40}
_{Emit Time}	_0.000s	_0.000s	_~	_~	_~	_{p=1.000 n=40}
_{Total Time}	_{1.643s (± 1.17%)}	_{1.629s (± 0.84%)}	_~	_1.574s	_1.816s	_{p=0.158 n=40}
_{strada-build-src - native}
_Errors	₀	₀	_~	_~	_~	_{p=1.000 n=40}
_Symbols	_1,184,972	_1,184,972	_~	_~	_~	_{p=1.000 n=40}
_Types	_438,823	_438,823	_~	_~	_~	_{p=1.000 n=40}
_{Memory Used}	_{1,158,904k (± 0.20%)}	_{1,158,250k (± 0.22%)}	_~	_1,142,593k	_1,178,634k	_{p=0.910 n=40}
_{Memory Allocs}	_{47,341,673 (± 0.06%)}	_{47,323,249 (± 0.07%)}	_~	_47,104,239	_47,565,030	_{p=0.618 n=40}
_{Config Time}	_{0.002s (± 9.47%)}	_{0.002s (± 9.86%)}	_~	_0.001s	_0.003s	_{p=0.699 n=40}
_{Parse Time}	_{0.134s (± 1.48%)}	_{0.132s (± 1.51%)}	_~	_0.118s	_0.146s	_{p=0.117 n=40}
_{Bind Time}	_0.000s	_0.000s	_~	_~	_~	_{p=1.000 n=40}
_{Check Time}	_{0.794s (± 1.23%)}	_{0.794s (± 0.95%)}	_~	_0.764s	_0.903s	_{p=0.585 n=40}
_{Emit Time}	_{0.143s (± 3.86%)}	_{0.138s (± 1.67%)}	_~	_0.125s	_0.156s	_{p=0.320 n=40}
_{Total Time}	_{9.304s (± 1.31%)}	_{9.281s (± 1.04%)}	_~	_8.986s	_10.882s	_{p=0.705 n=40}
_{strada-compiler - native}
_Errors	₀	₀	_~	_~	_~	_{p=1.000 n=40}
_Symbols	_263,481	_263,481	_~	_~	_~	_{p=1.000 n=40}
_Types	_196,103	_196,103	_~	_~	_~	_{p=1.000 n=40}
_{Memory Used}	_{221,493k (± 0.02%)}	_{221,521k (± 0.01%)}	_~	_221,256k	_221,689k	_{p=0.428 n=40}
_{Memory Allocs}	_{2,387,267 (± 0.01%)}	_{2,387,046 (± 0.01%)}	_~	_2,384,444	_2,388,297	_{p=0.265 n=40}
_{Config Time}	_{0.000s (±117.43%)}	_{0.000s (±196.00%)}	_~	_0.000s	_0.001s	_{p=0.320 n=40}
_{Parse Time}	_{0.048s (± 2.07%)}	_{0.050s (± 2.23%)}	_~	_0.043s	_0.056s	_{p=0.101 n=40}
_{Bind Time}	_0.000s	_0.000s	_~	_~	_~	_{p=1.000 n=40}
_{Check Time}	_{0.376s (± 0.84%)}	_{0.375s (± 0.44%)}	_~	_0.366s	_0.386s	_{p=0.882 n=40}
_{Emit Time}	_{0.049s (± 3.63%)}	_{0.050s (± 3.60%)}	_~	_0.042s	_0.060s	_{p=0.298 n=40}
_{Total Time}	_{0.502s (± 0.67%)}	_{0.503s (± 0.48%)}	_~	_0.487s	_0.513s	_{p=0.197 n=40}
_{t3code-server - native}
_Errors	₀	₀	_~	_~	_~	_{p=1.000 n=40}
_Symbols	_4,349,937	_4,349,937	_~	_~	_~	_{p=1.000 n=40}
_Types	_3,042,465	_3,042,465	_~	_~	_~	_{p=1.000 n=40}
_{Memory Used}	_{2,395,203k (± 0.02%)}	_{2,394,746k (± 0.02%)}	_~	_2,392,549k	_2,398,459k	_{p=0.079 n=40}
_{Memory Allocs}	_{37,013,233 (± 0.02%)}	_{37,019,612 (± 0.03%)}	_~	_36,969,586	_37,095,385	_{p=0.695 n=40}
_{Config Time}	_{0.003s (± 5.86%)}	_{0.002s (± 5.15%)}	_~	_0.002s	_0.003s	_{p=0.254 n=40}
_{Parse Time}	_{0.246s (± 1.52%)}	_{0.253s (± 1.74%)}	_{+0.006s (+ 2.40%)}	_0.233s	_0.313s	_{p=0.027 n=40}
_{Bind Time}	_{0.093s (± 7.04%)}	_{0.088s (± 5.93%)}	_~	_0.074s	_0.130s	_{p=0.259 n=40}
_{Check Time}	_{5.886s (± 0.64%)}	_{5.912s (± 0.61%)}	_~	_5.579s	_6.183s	_{p=0.080 n=40}
_{Emit Time}	_0.000s	_0.000s	_~	_~	_~	_{p=1.000 n=40}
_{Total Time}	_{6.241s (± 0.60%)}	_{6.267s (± 0.63%)}	_~	_5.907s	_6.599s	_{p=0.142 n=40}
_{tanstack-router - native}
_Errors	₁	₁	_~	_~	_~	_{p=1.000 n=40}
_Symbols	_570,149	_570,153	_{+4 (+ 0.00%)}	_~	_~	_{p=0.000 n=40}
_Types	_396,551	_396,551	_~	_~	_~	_{p=1.000 n=40}
_{Memory Used}	_{315,242k (± 0.01%)}	_{315,261k (± 0.01%)}	_~	_314,939k	_315,593k	_{p=0.581 n=40}
_{Memory Allocs}	_{4,319,057 (± 0.08%)}	_{4,325,489 (± 0.16%)}	_~	_4,308,295	_4,435,700	_{p=0.064 n=40}
_{Config Time}	_{0.001s (± 4.68%)}	_{0.001s (± 0.39%)}	_~	_0.001s	_0.001s	_{p=1.000 n=40}
_{Parse Time}	_{0.043s (± 2.26%)}	_{0.043s (± 3.54%)}	_~	_0.035s	_0.065s	_{p=0.582 n=40}
_{Bind Time}	_{0.014s (± 6.82%)}	_{0.014s (±10.84%)}	_~	_0.010s	_0.039s	_{p=0.966 n=40}
_{Check Time}	_{0.491s (± 0.97%)}	_{0.490s (± 1.13%)}	_~	_0.459s	_0.539s	_{p=0.616 n=40}
_{Emit Time}	_0.000s	_0.000s	_~	_~	_~	_{p=1.000 n=40}
_{Total Time}	_{0.567s (± 0.93%)}	_{0.566s (± 1.04%)}	_~	_0.531s	_0.608s	_{p=0.767 n=40}
_{ts-pre-modules - native}
_Errors	₈₇	₈₇	_~	_~	_~	_{p=1.000 n=40}
_Symbols	_231,607	_231,607	_~	_~	_~	_{p=1.000 n=40}
_Types	_181,163	_181,163	_~	_~	_~	_{p=1.000 n=40}
_{Memory Used}	_{190,840k (± 0.01%)}	_{190,850k (± 0.01%)}	_~	_190,700k	_190,965k	_{p=0.609 n=40}
_{Memory Allocs}	_{1,310,153 (± 0.01%)}	_{1,310,189 (± 0.01%)}	_~	_1,309,510	_1,311,213	_{p=0.725 n=40}
_{Config Time}	_0.000s	_0.000s	_~	_~	_~	_{p=1.000 n=40}
_{Parse Time}	_{0.042s (± 1.91%)}	_{0.043s (± 2.19%)}	_~	_0.037s	_0.050s	_{p=0.223 n=40}
_{Bind Time}	_{0.019s (± 3.24%)}	_{0.020s (± 3.17%)}	_~	_0.016s	_0.024s	_{p=0.387 n=40}
_{Check Time}	_{0.287s (± 0.61%)}	_{0.284s (± 0.64%)}	_~	_0.274s	_0.297s	_{p=0.071 n=40}
_{Emit Time}	_0.000s	_0.000s	_~	_~	_~	_{p=1.000 n=40}
_{Total Time}	_{0.354s (± 0.45%)}	_{0.353s (± 0.56%)}	_~	_0.341s	_0.366s	_{p=0.245 n=40}
_{vscode - native}
_Errors	₀	₀	_~	_~	_~	_{p=1.000 n=40}
_Symbols	_8,103,988	_8,103,992	_{+4 (+ 0.00%)}	_~	_~	_{p=0.000 n=40}
_Types	_4,726,796	_4,726,796	_~	_~	_~	_{p=1.000 n=40}
_{Memory Used}	_{5,419,306k (± 0.01%)}	_{5,419,667k (± 0.01%)}	_~	_5,415,982k	_5,424,774k	_{p=0.563 n=40}
_{Memory Allocs}	_{59,635,199 (± 0.01%)}	_{59,636,923 (± 0.01%)}	_~	_59,614,032	_59,719,184	_{p=0.536 n=40}
_{Config Time}	_{0.026s (± 1.23%)}	_{0.026s (± 0.93%)}	_~	_0.023s	_0.027s	_{p=0.709 n=40}
_{Parse Time}	_{0.988s (± 1.14%)}	_{0.998s (± 1.36%)}	_~	_0.902s	_1.149s	_{p=0.354 n=40}
_{Bind Time}	_{0.337s (± 3.88%)}	_{0.332s (± 3.63%)}	_~	_0.303s	_0.477s	_{p=0.220 n=40}
_{Check Time}	_{7.844s (± 0.64%)}	_{7.853s (± 0.60%)}	_~	_7.609s	_8.159s	_{p=0.837 n=40}
_{Emit Time}	_{2.310s (± 4.63%)}	_{2.234s (± 4.14%)}	_~	_1.955s	_3.138s	_{p=0.179 n=40}
_{Total Time}	_{11.571s (± 0.90%)}	_{11.503s (± 0.91%)}	_~	_10.985s	_12.378s	_{p=0.202 n=40}
_{webpack - native}
_Errors	₆₁₈	₆₁₈	_~	_~	_~	_{p=1.000 n=40}
_Symbols	_912,911	_912,916	_{+5 (+ 0.00%)}	_~	_~	_{p=0.000 n=40}
_Types	_636,385	_636,408	_{+23 (+ 0.00%)}	_~	_~	_{p=0.000 n=40}
_{Memory Used}	_{668,279k (± 0.01%)}	_{668,218k (± 0.01%)}	_~	_667,631k	_668,871k	_{p=0.314 n=40}
_{Memory Allocs}	_{6,227,866 (± 0.07%)}	_{6,225,761 (± 0.05%)}	_~	_6,212,951	_6,254,505	_{p=0.656 n=40}
_{Config Time}	_{0.003s (± 3.55%)}	_{0.003s (± 2.21%)}	_~	_0.003s	_0.004s	_{p=0.581 n=40}
_{Parse Time}	_{0.128s (± 2.92%)}	_{0.124s (± 1.71%)}	_~	_0.111s	_0.142s	_{p=0.130 n=40}
_{Bind Time}	_{0.042s (± 5.93%)}	_{0.044s (± 7.26%)}	_~	_0.033s	_0.067s	_{p=0.384 n=40}
_{Check Time}	_{1.017s (± 0.79%)}	_{1.016s (± 0.66%)}	_~	_0.982s	_1.074s	_{p=0.419 n=40}
_{Emit Time}	_0.000s	_0.000s	_~	_~	_~	_{p=1.000 n=40}
_{Total Time}	_{1.214s (± 0.66%)}	_{1.211s (± 0.53%)}	_~	_1.176s	_1.262s	_{p=0.365 n=40}
_{xstate-main - native}
_Errors	₁	₁	_~	_~	_~	_{p=1.000 n=40}
_Symbols	_3,926,173	_3,926,177	_{+4 (+ 0.00%)}	_~	_~	_{p=0.000 n=40}
_Types	_3,965,334	_3,965,334	_~	_~	_~	_{p=1.000 n=40}
_{Memory Used}	_{2,133,614k (± 0.01%)}	_{2,133,612k (± 0.01%)}	_~	_2,133,021k	_2,134,414k	_{p=0.735 n=40}
_{Memory Allocs}	_{41,985,334 (± 0.01%)}	_{41,984,929 (± 0.01%)}	_~	_41,963,762	_42,085,927	_{p=0.259 n=40}
_{Config Time}	_0.002s	_0.002s	_~	_~	_~	_{p=1.000 n=40}
_{Parse Time}	_{0.115s (± 2.38%)}	_{0.114s (± 1.84%)}	_~	_0.098s	_0.132s	_{p=0.587 n=40}
_{Bind Time}	_{0.044s (± 7.00%)}	_{0.045s (± 7.12%)}	_~	_0.033s	_0.066s	_{p=0.928 n=40}
_{Check Time}	_{4.464s (± 0.52%)}	_{4.479s (± 0.65%)}	_~	_4.319s	_4.699s	_{p=0.387 n=40}
_{Emit Time}	_0.000s	_0.000s	_~	_~	_~	_{p=1.000 n=40}
_{Total Time}	_{4.633s (± 0.50%)}	_{4.647s (± 0.63%)}	_~	_4.495s	_4.876s	_{p=0.485 n=40}

System info unknown

Hosts

native

Scenarios

Compiler-Unions - native
angular-1 - native
arktype - native
class-transformer - native
effect - native
mui-docs - native
sentry - native
social-app - native
strada-build-src - native
strada-compiler - native
t3code-server - native
tanstack-router - native
ts-pre-modules - native
vscode - native
webpack - native
xstate-main - native

_Benchmark	_Name	_Iterations
_Current	_pr	₂₀
_Baseline	_baseline	₂₀

Developer Information:

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typescript-automation · 2026-11-11T02:21:26Z

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crynta/terax-ai

tsconfig.json

error TS2345: Argument of type 'ArrayBufferLike' is not assignable to parameter of type 'ArrayBuffer'.

Update WebAssembly memory buffer types

7198ad7

Shared WebAssembly memories can expose SharedArrayBuffer rather than ArrayBuffer. Mirror microsoft/TypeScript-DOM-lib-generator#2592 so shared buffers can be narrowed correctly.

typescript-automation Bot assigned Jake Bailey (jakebailey) Nov 11, 2026

typescript-automation Bot added Author: Team For Uncommitted Bug PR for untriaged, rejected, closed or missing bug labels Nov 11, 2026

Jake Bailey (jakebailey) mentioned this pull request Nov 11, 2026

Type WebAssembly.Memory buffers as ArrayBufferLike for shared memories microsoft/TypeScript-DOM-lib-generator#2592

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Test WebAssembly memory buffer types - #65437

Test WebAssembly memory buffer types#65437
Jake Bailey (jakebailey) wants to merge 1 commit into
microsoft:mainfrom
jakebailey:dom-shared-memory

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