Find the end of multi-line comments with a substring search after the first line break by Andarist · Pull Request #64990 · microsoft/TypeScript

Mateusz Burzyński (Andarist) · 2026-10-28T09:50:49Z

This gives pretty nice improvements in the JSDoc-heavy sources. On my machine dom.generated.d.ts ends up being parsed up to 7% faster

… first line break

typescript-automation · 2026-10-28T09:50:55Z

This PR doesn't have any linked issues. Please open an issue that references this PR. From there we can discuss and prioritise.

Copilot

🟢 Approval recommended

No active review issues remain for the multiline comment scanning optimization.

No open issues 🎉

What changed in this PR

This PR optimizes multi-line comment scanning in the native TypeScript compiler, targeting faster parsing of JSDoc-heavy files.

Changes:

Uses a substring search to locate the closing delimiter after the first line break.
Scans backward to identify the last line for comment-directive processing.
Adds tests covering line-break variants, Unicode text, directive placement, and unterminated comments.

File	Description
`tsc/internal/scanner/scanner.go`	Adds the optimized multi-line comment tail scanner.
`tsc/internal/scanner/scanner_test.go`	Tests comment boundaries, token flags, and directive ranges.

_{Review effort: Balanced}

Jake Bailey (jakebailey) · 2026-10-28T10:02:11Z

TypeScript Bot (@typescript-bot) perf test this faster

typescript-automation · 2026-10-28T10:02:17Z

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

Command	Status	Results
`perf test this faster`	✅ Started	👀 Results

typescript-automation · 2026-10-28T10:53:54Z

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

Here they are:

Provisional hosted-runner results: these VMs are not the dedicated benchmark machines. Results may be noisier and are not comparable to the historical series. For comparisons, both revisions of each scenario ran on the same VM.

tsc

Comparison Report - baseline..pr

_Metric	_baseline	_pr	_Delta	_Best	_Worst	_p-value
_{Compiler-Unions - native}
_Errors	₄₁	₄₁	_~	_~	_~	_{p=1.000 n=12}
_Symbols	_88,466	_88,466	_~	_~	_~	_{p=1.000 n=12}
_Types	_79,607	_79,607	_~	_~	_~	_{p=1.000 n=12}
_{Memory Used}	_{104,122k (± 0.04%)}	_{104,130k (± 0.03%)}	_~	_104,020k	_104,200k	_{p=0.478 n=12}
_{Memory Allocs}	_{2,200,773 (± 0.01%)}	_{2,200,888 (± 0.01%)}	_~	_2,200,559	_2,201,245	_{p=0.311 n=12}
_{Config Time}	_0.000s	_0.000s	_~	_~	_~	_{p=1.000 n=12}
_{Parse Time}	_{0.024s (± 4.03%)}	_{0.025s (± 3.02%)}	_~	_0.023s	_0.027s	_{p=0.415 n=12}
_{Bind Time}	_{0.009s (± 5.99%)}	_{0.010s (± 6.32%)}	_~	_0.008s	_0.011s	_{p=0.282 n=12}
_{Check Time}	_{0.239s (± 1.24%)}	_{0.243s (± 1.48%)}	_~	_0.236s	_0.254s	_{p=0.091 n=12}
_{Emit Time}	_{0.164s (± 2.58%)}	_{0.162s (± 2.46%)}	_~	_0.150s	_0.170s	_{p=0.467 n=12}
_{Total Time}	_{0.440s (± 1.51%)}	_{0.444s (± 1.04%)}	_~	_0.430s	_0.456s	_{p=0.369 n=12}
_{angular-1 - native}
_Errors	₃	₃	_~	_~	_~	_{p=1.000 n=12}
_Symbols	_{586,542 (± 0.02%)}	_{586,496 (± 0.02%)}	_~	_586,256	_586,819	_{p=0.551 n=12}
_Types	_{241,694 (± 0.00%)}	_{241,692 (± 0.00%)}	_~	_241,690	_241,700	_{p=0.374 n=12}
_{Memory Used}	_{518,011k (± 0.03%)}	_{518,015k (± 0.03%)}	_~	_517,540k	_518,308k	_{p=0.702 n=12}
_{Memory Allocs}	_{13,114,931 (± 0.04%)}	_{13,119,967 (± 0.07%)}	_~	_13,110,194	_13,162,320	_{p=0.128 n=12}
_{Config Time}	_{0.009s (± 2.67%)}	_{0.009s (± 2.67%)}	_~	_0.009s	_0.010s	_{p=1.000 n=12}
_{Parse Time}	_{0.139s (± 4.48%)}	_{0.133s (± 5.33%)}	_~	_0.119s	_0.156s	_{p=0.146 n=12}
_{Bind Time}	_{0.041s (± 3.34%)}	_{0.048s (±14.19%)}	_~	_0.039s	_0.068s	_{p=0.144 n=12}
_{Check Time}	_0s	_0s	_~	_~	_~	_{p=1.000 n=12}
_{Emit Time}	_{0.932s (± 1.50%)}	_{0.938s (± 1.94%)}	_~	_0.886s	_0.983s	_{p=0.451 n=12}
_{Total Time}	_{1.130s (± 1.35%)}	_{1.142s (± 1.38%)}	_~	_1.093s	_1.176s	_{p=0.183 n=12}
_{arktype - native}
_Errors	₀	₀	_~	_~	_~	_{p=1.000 n=12}
_Symbols	_685,943	_685,943	_~	_~	_~	_{p=1.000 n=12}
_Types	_939,490	_939,490	_~	_~	_~	_{p=1.000 n=12}
_{Memory Used}	_{497,291k (± 0.02%)}	_{497,281k (± 0.01%)}	_~	_497,108k	_497,379k	_{p=1.000 n=12}
_{Memory Allocs}	_{12,805,130 (± 0.01%)}	_{12,806,329 (± 0.02%)}	_~	_12,802,436	_12,813,637	_{p=0.590 n=12}
_{Config Time}	_0.001s	_0.001s	_~	_~	_~	_{p=1.000 n=12}
_{Parse Time}	_{0.045s (± 3.60%)}	_{0.048s (± 4.45%)}	_{🔻+0.003s (+ 6.33%)}	_0.043s	_0.056s	_{p=0.033 n=12}
_{Bind Time}	_{0.015s (±12.37%)}	_{0.014s (± 8.25%)}	_~	_0.012s	_0.018s	_{p=0.249 n=12}
_{Check Time}	_{1.084s (± 1.39%)}	_{1.063s (± 2.23%)}	_~	_1.010s	_1.136s	_{p=0.080 n=12}
_{Emit Time}	_0.000s	_0.000s	_~	_~	_~	_{p=1.000 n=12}
_{Total Time}	_{1.179s (± 1.09%)}	_{1.155s (± 2.14%)}	_~	_1.097s	_1.227s	_{p=0.080 n=12}
_{class-transformer - native}
_Errors	₀	₀	_~	_~	_~	_{p=1.000 n=12}
_Symbols	_45,376	_45,376	_~	_~	_~	_{p=1.000 n=12}
_Types	_7,573	_7,573	_~	_~	_~	_{p=1.000 n=12}
_{Memory Used}	_{27,841k (± 0.03%)}	_{27,836k (± 0.01%)}	_~	_27,826k	_27,845k	_{p=0.541 n=12}
_{Memory Allocs}	_{323,258 (± 0.04%)}	_{323,339 (± 0.04%)}	_~	_323,032	_323,802	_{p=0.378 n=12}
_{Config Time}	_0.000s	_0.000s	_~	_~	_~	_{p=1.000 n=12}
_{Parse Time}	_{0.009s (± 3.96%)}	_{0.009s (± 4.23%)}	_~	_0.008s	_0.010s	_{p=0.870 n=12}
_{Bind Time}	_{0.002s (±20.64%)}	_{0.003s (±21.92%)}	_~	_0.002s	_0.004s	_{p=0.820 n=12}
_{Check Time}	_{0.008s (± 5.81%)}	_{0.008s (± 5.31%)}	_~	_0.007s	_0.009s	_{p=0.960 n=12}
_{Emit Time}	_{0.010s (± 3.69%)}	_{0.010s (± 4.01%)}	_~	_0.009s	_0.011s	_{p=0.870 n=12}
_{Total Time}	_{0.031s (± 1.87%)}	_{0.031s (± 1.65%)}	_~	_0.029s	_0.031s	_{p=0.763 n=12}
_{effect - native}
_Errors	₁₂	₁₂	_~	_~	_~	_{p=1.000 n=12}
_Symbols	_1,235,117	_1,235,117	_~	_~	_~	_{p=1.000 n=12}
_Types	_894,115	_894,115	_~	_~	_~	_{p=1.000 n=12}
_{Memory Used}	_{940,588k (± 0.03%)}	_{940,548k (± 0.03%)}	_~	_939,840k	_941,132k	_{p=0.977 n=12}
_{Memory Allocs}	_{15,756,197 (± 0.06%)}	_{15,754,324 (± 0.06%)}	_~	_15,742,560	_15,789,694	_{p=0.266 n=12}
_{Config Time}	_{0.002s (±25.93%)}	_{0.002s (±23.43%)}	_~	_0.002s	_0.005s	_{p=0.932 n=12}
_{Parse Time}	_{0.234s (± 6.06%)}	_{0.226s (± 3.07%)}	_~	_0.207s	_0.249s	_{p=0.202 n=12}
_{Bind Time}	_0.000s	_0.000s	_~	_~	_~	_{p=1.000 n=12}
_{Check Time}	_{1.373s (± 2.94%)}	_{1.397s (± 1.66%)}	_~	_1.334s	_1.455s	_{p=0.640 n=12}
_{Emit Time}	_{0.790s (± 5.55%)}	_{0.774s (± 2.32%)}	_~	_0.722s	_0.819s	_{p=0.386 n=12}
_{Total Time}	_{2.537s (± 3.67%)}	_{2.530s (± 1.34%)}	_~	_2.415s	_2.620s	_{p=0.340 n=12}
_{mui-docs - native}
_Errors	_11,405	_11,405	_~	_~	_~	_{p=1.000 n=12}
_Symbols	_3,784,027	_3,784,027	_~	_~	_~	_{p=1.000 n=12}
_Types	_1,355,982	_1,355,982	_~	_~	_~	_{p=1.000 n=12}
_{Memory Used}	_{1,835,506k (± 0.11%)}	_{1,835,757k (± 0.08%)}	_~	_1,832,228k	_1,839,471k	_{p=0.887 n=12}
_{Memory Allocs}	_{26,724,605 (± 0.08%)}	_{26,726,901 (± 0.04%)}	_~	_26,697,505	_26,764,394	_{p=0.799 n=12}
_{Config Time}	_{0.008s (± 3.00%)}	_{0.008s (± 2.25%)}	_~	_0.008s	_0.009s	_{p=1.000 n=12}
_{Parse Time}	_{0.294s (± 4.74%)}	_{0.296s (± 2.05%)}	_~	_0.286s	_0.312s	_{p=0.560 n=12}
_{Bind Time}	_0.001s	_0.001s	_~	_~	_~	_{p=1.000 n=12}
_{Check Time}	_{3.229s (± 0.85%)}	_{3.220s (± 0.49%)}	_~	_3.182s	_3.261s	_{p=0.832 n=12}
_{Emit Time}	_{0.243s (± 1.44%)}	_{0.244s (± 1.08%)}	_~	_0.235s	_0.250s	_{p=0.719 n=12}
_{Total Time}	_{4.257s (± 0.66%)}	_{4.254s (± 0.57%)}	_~	_4.198s	_4.344s	_{p=0.504 n=12}
_{sentry - native}
_Errors	₂	₂	_~	_~	_~	_{p=1.000 n=12}
_Symbols	_4,793,249	_4,793,249	_~	_~	_~	_{p=1.000 n=12}
_Types	_2,607,051	_2,607,051	_~	_~	_~	_{p=1.000 n=12}
_{Memory Used}	_{2,880,451k (± 0.05%)}	_{2,879,388k (± 0.02%)}	_~	_2,878,084k	_2,880,944k	_{p=0.291 n=12}
_{Memory Allocs}	_{75,850,386 (± 0.11%)}	_{75,915,107 (± 0.11%)}	_~	_75,688,970	_76,125,206	_{p=0.266 n=12}
_{Config Time}	_{0.025s (± 0.97%)}	_{0.026s (± 1.97%)}	_~	_0.025s	_0.027s	_{p=0.349 n=12}
_{Parse Time}	_{0.484s (± 4.88%)}	_{0.492s (± 7.99%)}	_~	_0.441s	_0.668s	_{p=0.943 n=12}
_{Bind Time}	_{0.149s (± 9.38%)}	_{0.157s (±13.18%)}	_~	_0.130s	_0.209s	_{p=0.990 n=12}
_{Check Time}	_{6.863s (± 0.89%)}	_{6.853s (± 1.12%)}	_~	_6.723s	_7.093s	_{p=0.562 n=12}
_{Emit Time}	_0.000s	_0.000s	_~	_~	_~	_{p=1.000 n=12}
_{Total Time}	_{7.577s (± 0.76%)}	_{7.581s (± 1.04%)}	_~	_7.462s	_7.795s	_{p=0.799 n=12}
_{social-app - native}
_Errors	₀	₀	_~	_~	_~	_{p=1.000 n=12}
_Symbols	_1,883,075	_1,883,075	_~	_~	_~	_{p=1.000 n=12}
_Types	_1,158,171	_1,158,171	_~	_~	_~	_{p=1.000 n=12}
_{Memory Used}	_{972,495k (± 0.02%)}	_{972,377k (± 0.02%)}	_~	_972,056k	_972,920k	_{p=0.347 n=12}
_{Memory Allocs}	_{13,692,218 (± 0.11%)}	_{13,714,560 (± 0.16%)}	_~	_13,662,605	_13,780,114	_{p=0.089 n=12}
_{Config Time}	_0.007s	_0.007s	_~	_~	_~	_{p=1.000 n=12}
_{Parse Time}	_{0.163s (± 6.35%)}	_{0.163s (± 4.13%)}	_~	_0.150s	_0.182s	_{p=0.560 n=12}
_{Bind Time}	_{0.041s (±11.76%)}	_{0.044s (±14.10%)}	_~	_0.034s	_0.069s	_{p=0.295 n=12}
_{Check Time}	_{1.552s (± 0.54%)}	_{1.572s (± 1.82%)}	_~	_1.519s	_1.703s	_{p=0.054 n=12}
_{Emit Time}	_0.000s	_0.000s	_~	_~	_~	_{p=1.000 n=12}
_{Total Time}	_{1.781s (± 0.86%)}	_{1.807s (± 1.91%)}	_~	_1.758s	_1.965s	_{p=0.139 n=12}
_{strada-build-src - native}
_Errors	₀	₀	_~	_~	_~	_{p=1.000 n=12}
_Symbols	_1,184,976	_1,184,976	_~	_~	_~	_{p=1.000 n=12}
_Types	_438,967	_438,967	_~	_~	_~	_{p=1.000 n=12}
_{Memory Used}	_{1,174,575k (± 0.28%)}	_{1,172,430k (± 0.32%)}	_~	_1,164,174k	_1,187,986k	_{p=0.198 n=12}
_{Memory Allocs}	_{77,501,245 (± 0.13%)}	_{77,444,307 (± 0.15%)}	_~	_77,155,386	_77,724,332	_{p=0.443 n=12}
_{Config Time}	_{0.002s (±22.34%)}	_{0.002s (±23.23%)}	_~	_0.001s	_0.003s	_{p=0.532 n=12}
_{Parse Time}	_{0.150s (± 2.93%)}	_{0.150s (± 2.41%)}	_~	_0.140s	_0.160s	_{p=0.639 n=12}
_{Bind Time}	_0.000s	_0.000s	_~	_~	_~	_{p=1.000 n=12}
_{Check Time}	_{0.906s (± 1.34%)}	_{0.910s (± 1.27%)}	_~	_0.888s	_0.956s	_{p=0.468 n=12}
_{Emit Time}	_{0.189s (± 3.40%)}	_{0.193s (± 2.78%)}	_~	_0.182s	_0.206s	_{p=0.183 n=12}
_{Total Time}	_{11.101s (± 1.98%)}	_{10.982s (± 0.48%)}	_~	_10.789s	_11.103s	_{p=0.799 n=12}
_{strada-compiler - native}
_Errors	₀	₀	_~	_~	_~	_{p=1.000 n=12}
_Symbols	_263,513	_263,513	_~	_~	_~	_{p=1.000 n=12}
_Types	_196,118	_196,118	_~	_~	_~	_{p=1.000 n=12}
_{Memory Used}	_{224,529k (± 0.04%)}	_{224,632k (± 0.03%)}	_~	_224,471k	_224,853k	_{p=0.143 n=12}
_{Memory Allocs}	_{4,303,958 (± 0.01%)}	_{4,304,488 (± 0.01%)}	_~	_4,303,575	_4,305,631	_{p=0.198 n=12}
_{Config Time}	_0.000s	_0.000s	_~	_~	_~	_{p=1.000 n=12}
_{Parse Time}	_{0.050s (± 3.55%)}	_{0.051s (± 4.70%)}	_~	_0.044s	_0.059s	_{p=0.697 n=12}
_{Bind Time}	_0.000s	_0.000s	_~	_~	_~	_{p=1.000 n=12}
_{Check Time}	_{0.395s (± 1.05%)}	_{0.390s (± 0.87%)}	_~	_0.384s	_0.404s	_{p=0.108 n=12}
_{Emit Time}	_{0.076s (± 3.52%)}	_{0.079s (± 2.19%)}	_~	_0.076s	_0.084s	_{p=0.333 n=12}
_{Total Time}	_{0.551s (± 0.58%)}	_{0.550s (± 0.70%)}	_~	_0.541s	_0.562s	_{p=0.679 n=12}
_{t3code-server - native}
_Errors	₀	₀	_~	_~	_~	_{p=1.000 n=12}
_Symbols	_4,350,705	_4,350,705	_~	_~	_~	_{p=1.000 n=12}
_Types	_3,040,691	_3,040,691	_~	_~	_~	_{p=1.000 n=12}
_{Memory Used}	_{2,433,894k (± 0.02%)}	_{2,434,138k (± 0.03%)}	_~	_2,432,437k	_2,436,187k	_{p=0.713 n=12}
_{Memory Allocs}	_{37,871,841 (± 0.05%)}	_{37,895,181 (± 0.08%)}	_~	_37,826,547	_37,975,620	_{p=0.378 n=12}
_{Config Time}	_0.003s	_0.003s	_~	_~	_~	_{p=1.000 n=12}
_{Parse Time}	_{0.257s (± 1.78%)}	_{0.258s (± 2.63%)}	_~	_0.237s	_0.272s	_{p=0.831 n=12}
_{Bind Time}	_{0.083s (± 8.37%)}	_{0.085s (± 8.08%)}	_~	_0.075s	_0.108s	_{p=0.595 n=12}
_{Check Time}	_{7.594s (± 0.77%)}	_{7.620s (± 0.56%)}	_~	_7.536s	_7.744s	_{p=0.156 n=12}
_{Emit Time}	_0.000s	_0.000s	_~	_~	_~	_{p=1.000 n=12}
_{Total Time}	_{7.948s (± 0.78%)}	_{7.977s (± 0.55%)}	_~	_7.893s	_8.092s	_{p=0.219 n=12}
_{tanstack-router - native}
_Errors	₁	₁	_~	_~	_~	_{p=1.000 n=12}
_Symbols	_571,760	_571,760	_~	_~	_~	_{p=1.000 n=12}
_Types	_397,693	_397,693	_~	_~	_~	_{p=1.000 n=12}
_{Memory Used}	_{331,426k (± 0.01%)}	_{331,405k (± 0.02%)}	_~	_331,209k	_331,541k	_{p=0.977 n=12}
_{Memory Allocs}	_{5,091,150 (± 0.06%)}	_{5,090,640 (± 0.05%)}	_~	_5,086,940	_5,100,429	_{p=0.932 n=12}
_{Config Time}	_0.001s	_0.001s	_~	_~	_~	_{p=1.000 n=12}
_{Parse Time}	_{0.040s (± 5.67%)}	_{0.040s (± 5.98%)}	_~	_0.035s	_0.045s	_{p=0.966 n=12}
_{Bind Time}	_{0.012s (±11.42%)}	_{0.012s (± 8.27%)}	_~	_0.011s	_0.015s	_{p=0.784 n=12}
_{Check Time}	_{0.581s (± 1.25%)}	_{0.578s (± 1.20%)}	_~	_0.562s	_0.601s	_{p=0.541 n=12}
_{Emit Time}	_0.000s	_0.000s	_~	_~	_~	_{p=1.000 n=12}
_{Total Time}	_{0.659s (± 0.99%)}	_{0.655s (± 1.27%)}	_~	_0.633s	_0.670s	_{p=0.744 n=12}
_{ts-pre-modules - native}
_Errors	₈₇	₈₇	_~	_~	_~	_{p=1.000 n=12}
_Symbols	_231,617	_231,617	_~	_~	_~	_{p=1.000 n=12}
_Types	_181,196	_181,196	_~	_~	_~	_{p=1.000 n=12}
_{Memory Used}	_{193,537k (± 0.03%)}	_{193,490k (± 0.02%)}	_{-47k (- 0.02%)}	_193,425k	_193,564k	_{p=0.030 n=12}
_{Memory Allocs}	_{1,372,876 (± 0.01%)}	_{1,372,966 (± 0.02%)}	_~	_1,372,663	_1,373,635	_{p=0.713 n=12}
_{Config Time}	_0.000s	_0.000s	_~	_~	_~	_{p=1.000 n=12}
_{Parse Time}	_{0.052s (± 6.56%)}	_{0.051s (± 3.02%)}	_~	_0.047s	_0.056s	_{p=0.593 n=12}
_{Bind Time}	_{0.027s (±17.60%)}	_{0.025s (±10.46%)}	_~	_0.019s	_0.030s	_{p=0.700 n=12}
_{Check Time}	_{0.375s (± 3.23%)}	_{0.374s (± 1.71%)}	_~	_0.355s	_0.390s	_{p=0.541 n=12}
_{Emit Time}	_0.000s	_0.000s	_~	_~	_~	_{p=1.000 n=12}
_{Total Time}	_{0.461s (± 3.32%)}	_{0.457s (± 1.82%)}	_~	_0.433s	_0.484s	_{p=0.898 n=12}
_{vscode - native}
_Errors	₁₀	₁₀	_~	_~	_~	_{p=1.000 n=12}
_Symbols	_7,338,354	_7,338,354	_~	_~	_~	_{p=1.000 n=12}
_Types	_4,333,029	_4,333,029	_~	_~	_~	_{p=1.000 n=12}
_{Memory Used}	_{5,110,529k (± 0.03%)}	_{5,109,329k (± 0.02%)}	_~	_5,106,605k	_5,111,226k	_{p=0.198 n=12}
_{Memory Allocs}	_{64,291,918 (± 0.02%)}	_{64,295,614 (± 0.03%)}	_~	_64,279,243	_64,392,962	_{p=0.932 n=12}
_{Config Time}	_{0.035s (± 1.08%)}	_{0.035s (± 2.23%)}	_~	_0.033s	_0.037s	_{p=0.999 n=12}
_{Parse Time}	_{0.949s (± 2.26%)}	_{0.917s (± 3.44%)}	_~	_0.825s	_0.991s	_{p=0.124 n=12}
_{Bind Time}	_{0.308s (± 1.90%)}	_{0.380s (±18.41%)}	_{🔻+0.071s (+23.14%)}	_0.292s	_0.591s	_{p=0.047 n=12}
_{Check Time}	_{8.262s (± 0.67%)}	_{8.306s (± 1.23%)}	_~	_7.976s	_8.664s	_{p=0.370 n=12}
_{Emit Time}	_{2.972s (± 3.39%)}	_{3.200s (± 7.44%)}	_~	_2.839s	_3.873s	_{p=0.178 n=12}
_{Total Time}	_{12.585s (± 1.05%)}	_{12.897s (± 2.10%)}	_{+0.312s (+ 2.48%)}	_12.420s	_13.719s	_{p=0.045 n=12}
_{webpack - native}
_Errors	₆₁₉	₆₁₉	_~	_~	_~	_{p=1.000 n=12}
_Symbols	_925,776	_925,776	_~	_~	_~	_{p=1.000 n=12}
_Types	_649,119	_649,119	_~	_~	_~	_{p=1.000 n=12}
_{Memory Used}	_{696,438k (± 0.02%)}	_{696,325k (± 0.02%)}	_~	_695,868k	_696,502k	_{p=0.434 n=12}
_{Memory Allocs}	_{6,686,585 (± 0.02%)}	_{6,685,615 (± 0.02%)}	_~	_6,682,800	_6,688,931	_{p=0.242 n=12}
_{Config Time}	_0.004s	_0.004s	_~	_~	_~	_{p=1.000 n=12}
_{Parse Time}	_{0.158s (± 3.86%)}	_{0.148s (± 3.32%)}	_{🟩-0.010s (- 6.49%)}	_0.133s	_0.162s	_{p=0.032 n=12}
_{Bind Time}	_{0.044s (± 5.77%)}	_{0.043s (± 5.63%)}	_~	_0.039s	_0.051s	_{p=0.466 n=12}
_{Check Time}	_{1.295s (± 1.14%)}	_{1.295s (± 1.50%)}	_~	_1.258s	_1.351s	_{p=0.921 n=12}
_{Emit Time}	_0.000s	_0.000s	_~	_~	_~	_{p=1.000 n=12}
_{Total Time}	_{1.526s (± 1.15%)}	_{1.516s (± 1.50%)}	_~	_1.469s	_1.582s	_{p=0.340 n=12}
_{xstate-main - native}
_Errors	₀	₀	_~	_~	_~	_{p=1.000 n=12}
_Symbols	_640,494	_640,494	_~	_~	_~	_{p=1.000 n=12}
_Types	_387,992	_387,992	_~	_~	_~	_{p=1.000 n=12}
_{Memory Used}	_{350,994k (± 0.04%)}	_{351,007k (± 0.03%)}	_~	_350,798k	_351,236k	_{p=0.641 n=12}
_{Memory Allocs}	_{4,066,851 (± 0.05%)}	_{4,065,406 (± 0.09%)}	_~	_4,058,550	_4,078,468	_{p=0.143 n=12}
_{Config Time}	_0.001s	_0.001s	_~	_~	_~	_{p=1.000 n=12}
_{Parse Time}	_{0.062s (± 4.04%)}	_{0.061s (± 3.06%)}	_~	_0.056s	_0.066s	_{p=0.781 n=12}
_{Bind Time}	_{0.021s (±14.55%)}	_{0.019s (±10.81%)}	_~	_0.017s	_0.028s	_{p=0.415 n=12}
_{Check Time}	_{0.427s (± 1.88%)}	_{0.419s (± 1.17%)}	_~	_0.407s	_0.431s	_{p=0.155 n=12}
_{Emit Time}	_0.000s	_0.000s	_~	_~	_~	_{p=1.000 n=12}
_{Total Time}	_{0.516s (± 1.72%)}	_{0.504s (± 1.20%)}	_{-0.012s (- 2.37%)}	_0.489s	_0.518s	_{p=0.032 n=12}

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	₁₂
_Baseline	_baseline	₁₂

Developer Information:

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Find the end of multi-line comments with a substring search after the…

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github-project-automation Bot added this to PR Backlog Oct 28, 2026

Copilot AI balanced review requested due to automatic review settings October 28, 2026 09:50

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Copilot started reviewing on behalf of Mateusz Burzyński (Andarist) October 28, 2026 09:51

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Find the end of multi-line comments with a substring search after the first line break - #64990

Find the end of multi-line comments with a substring search after the first line break#64990
Mateusz Burzyński (Andarist) wants to merge 1 commit into
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