Try using a map for resolved write-side types. by DanielRosenwasser · Pull Request #64756 · microsoft/TypeScript

Daniel Rosenwasser (DanielRosenwasser) · 2026-10-12T22:29:29Z

No description provided.

Daniel Rosenwasser (DanielRosenwasser) · 2026-10-12T22:29:52Z

TypeScript Bot (@typescript-bot) perf test this

typescript-automation · 2026-10-12T22:29:58Z

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

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

typescript-automation · 2026-10-12T22:57:38Z

Daniel Rosenwasser (@DanielRosenwasser)
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=12}
_Symbols	_115,276	_115,276	_~	_~	_~	_{p=1.000 n=12}
_Types	_79,613	_79,613	_~	_~	_~	_{p=1.000 n=12}
_{Memory Used}	_{133,208k (± 0.05%)}	_{132,330k (± 0.07%)}	_{-877k (- 0.66%)}	_132,091k	_132,557k	_{p=0.000 n=12}
_{Memory Allocs}	_{2,190,298 (± 0.01%)}	_{2,190,291 (± 0.00%)}	_~	_2,190,116	_2,190,529	_{p=0.671 n=12}
_{Config Time}	_0.000s	_0.000s	_~	_~	_~	_{p=1.000 n=12}
_{Parse Time}	_{0.049s (± 2.68%)}	_{0.050s (± 2.92%)}	_~	_0.047s	_0.053s	_{p=0.578 n=12}
_{Bind Time}	_{0.015s (±13.21%)}	_{0.016s (±13.66%)}	_~	_0.012s	_0.023s	_{p=0.463 n=12}
_{Check Time}	_{0.607s (± 0.97%)}	_{0.595s (± 0.74%)}	_{-0.012s (- 1.91%)}	_0.587s	_0.608s	_{p=0.003 n=12}
_{Emit Time}	_{0.327s (± 3.49%)}	_{0.317s (± 2.19%)}	_~	_0.294s	_0.331s	_{p=0.202 n=12}
_{Total Time}	_{1.006s (± 0.96%)}	_{0.986s (± 0.70%)}	_{-0.020s (- 2.02%)}	_0.968s	_1.008s	_{p=0.002 n=12}
_{angular-1 - native}
_Errors	₃	₃	_~	_~	_~	_{p=1.000 n=12}
_Symbols	_{845,760 (± 0.05%)}	_{846,058 (± 0.09%)}	_~	_842,956	_847,803	_{p=0.242 n=12}
_Types	_{248,125 (± 0.00%)}	_{248,125 (± 0.00%)}	_~	_248,120	_248,133	_{p=0.819 n=12}
_{Memory Used}	_{745,976k (± 0.02%)}	_{741,757k (± 0.02%)}	_{-4,219k (- 0.57%)}	_741,436k	_742,198k	_{p=0.000 n=12}
_{Memory Allocs}	_{12,918,958 (± 0.05%)}	_{12,923,267 (± 0.11%)}	_~	_12,909,990	_12,990,251	_{p=0.713 n=12}
_{Config Time}	_{0.020s (± 1.60%)}	_{0.020s (± 1.59%)}	_~	_0.020s	_0.021s	_{p=1.000 n=12}
_{Parse Time}	_{0.328s (± 1.75%)}	_{0.326s (± 1.83%)}	_~	_0.312s	_0.343s	_{p=0.639 n=12}
_{Bind Time}	_{0.072s (± 1.08%)}	_{0.072s (± 2.78%)}	_~	_0.068s	_0.081s	_{p=1.000 n=12}
_{Check Time}	_0s	_0s	_~	_~	_~	_{p=1.000 n=12}
_{Emit Time}	_{1.845s (± 0.52%)}	_{1.845s (± 1.21%)}	_~	_1.804s	_1.939s	_{p=0.660 n=12}
_{Total Time}	_{2.279s (± 0.53%)}	_{2.279s (± 1.12%)}	_~	_2.230s	_2.391s	_{p=0.580 n=12}
_{mui-docs - native}
_Errors	_11,405	_11,405	_~	_~	_~	_{p=1.000 n=12}
_Symbols	_4,339,337	_4,339,337	_~	_~	_~	_{p=1.000 n=12}
_Types	_1,379,387	_1,379,387	_~	_~	_~	_{p=1.000 n=12}
_{Memory Used}	_{2,775,043k (± 0.06%)}	_{2,744,661k (± 0.07%)}	_{-30,383k (- 1.09%)}	_2,740,558k	_2,750,158k	_{p=0.000 n=12}
_{Memory Allocs}	_{32,737,423 (± 0.12%)}	_{32,722,471 (± 0.05%)}	_~	_32,692,220	_32,781,975	_{p=0.799 n=12}
_{Config Time}	_{0.020s (± 1.59%)}	_{0.020s (± 1.40%)}	_~	_0.020s	_0.021s	_{p=0.667 n=12}
_{Parse Time}	_{0.616s (± 3.21%)}	_{0.619s (± 2.24%)}	_~	_0.578s	_0.644s	_{p=0.681 n=12}
_{Bind Time}	_{0.003s (±13.14%)}	_{0.003s (±11.61%)}	_~	_0.002s	_0.003s	_{p=0.680 n=12}
_{Check Time}	_{10.542s (± 0.39%)}	_{10.608s (± 0.56%)}	_{+0.066s (+ 0.62%)}	_10.537s	_10.895s	_{p=0.003 n=12}
_{Emit Time}	_{0.602s (±13.79%)}	_{0.661s (±11.39%)}	_~	_0.507s	_0.783s	_{p=0.202 n=12}
_{Total Time}	_{12.738s (± 0.47%)}	_{12.874s (± 0.52%)}	_{+0.136s (+ 1.07%)}	_12.669s	_13.018s	_{p=0.002 n=12}
_{strada-build-src - native}
_Errors	₀	₀	_~	_~	_~	_{p=1.000 n=12}
_Symbols	_1,388,669	_1,388,669	_~	_~	_~	_{p=1.000 n=12}
_Types	_441,862	_441,862	_~	_~	_~	_{p=1.000 n=12}
_{Memory Used}	_{1,621,008k (± 0.99%)}	_{1,619,534k (± 1.02%)}	_~	_1,586,575k	_1,660,368k	_{p=0.590 n=12}
_{Memory Allocs}	_{92,166,614 (± 0.15%)}	_{92,206,118 (± 0.13%)}	_~	_91,860,228	_92,487,828	_{p=0.755 n=12}
_{Config Time}	_{0.004s (± 9.52%)}	_{0.004s (± 9.48%)}	_~	_0.003s	_0.005s	_{p=0.142 n=12}
_{Parse Time}	_{0.238s (± 3.46%)}	_{0.241s (± 4.25%)}	_~	_0.215s	_0.260s	_{p=0.640 n=12}
_{Bind Time}	_0.000s	_0.000s	_~	_~	_~	_{p=1.000 n=12}
_{Check Time}	_{2.184s (± 0.43%)}	_{2.162s (± 0.42%)}	_{-0.022s (- 1.03%)}	_2.141s	_2.191s	_{p=0.001 n=12}
_{Emit Time}	_{0.368s (± 2.20%)}	_{0.368s (± 1.83%)}	_~	_0.357s	_0.384s	_{p=0.810 n=12}
_{Total Time}	_{28.462s (± 0.61%)}	_{28.279s (± 0.59%)}	_~	_27.860s	_28.733s	_{p=0.052 n=12}
_{strada-compiler - native}
_Errors	₀	₀	_~	_~	_~	_{p=1.000 n=12}
_Symbols	_334,953	_334,953	_~	_~	_~	_{p=1.000 n=12}
_Types	_197,616	_197,616	_~	_~	_~	_{p=1.000 n=12}
_{Memory Used}	_{296,076k (± 0.03%)}	_{293,691k (± 0.03%)}	_{-2,385k (- 0.81%)}	_293,411k	_293,857k	_{p=0.000 n=12}
_{Memory Allocs}	_{4,621,622 (± 0.01%)}	_{4,621,576 (± 0.01%)}	_~	_4,620,548	_4,622,721	_{p=0.843 n=12}
_{Config Time}	_0.001s	_0.001s	_~	_~	_~	_{p=1.000 n=12}
_{Parse Time}	_{0.111s (± 4.29%)}	_{0.117s (± 3.73%)}	_~	_0.104s	_0.128s	_{p=0.066 n=12}
_{Bind Time}	_0.000s	_0.000s	_~	_~	_~	_{p=1.000 n=12}
_{Check Time}	_{1.033s (± 0.43%)}	_{1.030s (± 0.44%)}	_~	_1.018s	_1.044s	_{p=0.339 n=12}
_{Emit Time}	_{0.149s (± 6.93%)}	_{0.150s (± 3.62%)}	_~	_0.130s	_0.162s	_{p=0.876 n=12}
_{Total Time}	_{1.350s (± 1.13%)}	_{1.349s (± 0.81%)}	_~	_1.320s	_1.373s	_{p=0.943 n=12}
_{ts-pre-modules - native}
_Errors	₈₇	₈₇	_~	_~	_~	_{p=1.000 n=12}
_Symbols	_303,834	_303,834	_~	_~	_~	_{p=1.000 n=12}
_Types	_181,663	_181,663	_~	_~	_~	_{p=1.000 n=12}
_{Memory Used}	_{256,654k (± 0.02%)}	_{254,400k (± 0.02%)}	_{-2,254k (- 0.88%)}	_254,267k	_254,534k	_{p=0.000 n=12}
_{Memory Allocs}	_{1,613,977 (± 0.01%)}	_{1,614,122 (± 0.01%)}	_~	_1,613,711	_1,614,984	_{p=0.355 n=12}
_{Config Time}	_0.000s	_0.000s	_~	_~	_~	_{p=1.000 n=12}
_{Parse Time}	_{0.097s (± 4.72%)}	_{0.097s (± 3.17%)}	_~	_0.091s	_0.106s	_{p=0.833 n=12}
_{Bind Time}	_{0.037s (± 6.24%)}	_{0.038s (± 8.98%)}	_~	_0.032s	_0.049s	_{p=0.699 n=12}
_{Check Time}	_{0.819s (± 0.82%)}	_{0.817s (± 0.40%)}	_~	_0.808s	_0.824s	_{p=0.258 n=12}
_{Emit Time}	_{0.000s (±217.90%)}	_0.000s	_~	_~	_~	_{p=1.000 n=12}
_{Total Time}	_{0.967s (± 0.63%)}	_{0.965s (± 0.49%)}	_~	_0.955s	_0.979s	_{p=0.599 n=12}
_{vscode - native}
_Errors	₃₉₅	₃₉₅	_~	_~	_~	_{p=1.000 n=12}
_Symbols	_11,290,219	_11,290,219	_~	_~	_~	_{p=1.000 n=12}
_Types	_3,729,124	_3,729,124	_~	_~	_~	_{p=1.000 n=12}
_{Memory Used}	_{6,445,183k (± 0.02%)}	_{6,361,359k (± 0.03%)}	_{-83,823k (- 1.30%)}	_6,358,914k	_6,366,364k	_{p=0.000 n=12}
_{Memory Allocs}	_{55,398,729 (± 0.01%)}	_{55,421,113 (± 0.05%)}	_~	_55,389,078	_55,509,142	_{p=0.242 n=12}
_{Config Time}	_{0.075s (± 0.54%)}	_{0.075s (± 0.43%)}	_~	_0.075s	_0.076s	_{p=1.000 n=12}
_{Parse Time}	_{1.826s (± 4.02%)}	_{1.897s (± 4.11%)}	_~	_1.703s	_2.049s	_{p=0.110 n=12}
_{Bind Time}	_{0.645s (±18.95%)}	_{0.542s (±19.14%)}	_~	_0.437s	_0.871s	_{p=0.062 n=12}
_{Check Time}	_{15.043s (± 0.98%)}	_{15.108s (± 0.79%)}	_~	_14.782s	_15.317s	_{p=0.831 n=12}
_{Emit Time}	_{4.979s (± 9.93%)}	_{4.615s (± 9.62%)}	_~	_4.098s	_5.897s	_{p=0.054 n=12}
_{Total Time}	_{22.656s (± 1.88%)}	_{22.321s (± 1.63%)}	_~	_21.881s	_23.479s	_{p=0.203 n=12}
_{webpack - native}
_Errors	₅₈₅	₅₈₅	_~	_~	_~	_{p=1.000 n=12}
_Symbols	_1,317,332	_1,317,332	_~	_~	_~	_{p=1.000 n=12}
_Types	_619,546	_619,546	_~	_~	_~	_{p=1.000 n=12}
_{Memory Used}	_{945,467k (± 0.01%)}	_{936,309k (± 0.02%)}	_{-9,158k (- 0.97%)}	_935,876k	_936,774k	_{p=0.000 n=12}
_{Memory Allocs}	_{6,672,706 (± 0.03%)}	_{6,671,818 (± 0.01%)}	_~	_6,670,686	_6,675,553	_{p=0.514 n=12}
_{Config Time}	_{0.008s (± 3.13%)}	_{0.008s (± 3.13%)}	_~	_0.007s	_0.008s	_{p=1.000 n=12}
_{Parse Time}	_{0.231s (± 4.20%)}	_{0.239s (± 2.74%)}	_~	_0.225s	_0.259s	_{p=0.131 n=12}
_{Bind Time}	_{0.081s (±20.56%)}	_{0.068s (±16.68%)}	_~	_0.051s	_0.106s	_{p=0.325 n=12}
_{Check Time}	_{1.981s (± 0.81%)}	_{1.990s (± 0.64%)}	_~	_1.960s	_2.024s	_{p=0.259 n=12}
_{Emit Time}	_0.000s	_0.000s	_~	_~	_~	_{p=1.000 n=12}
_{Total Time}	_{2.328s (± 0.42%)}	_{2.336s (± 0.44%)}	_~	_2.316s	_2.360s	_{p=0.213 n=12}
_{xstate-main - native}
_Errors	₀	₀	_~	_~	_~	_{p=1.000 n=12}
_Symbols	_1,065,632	_1,065,632	_~	_~	_~	_{p=1.000 n=12}
_Types	_390,378	_390,378	_~	_~	_~	_{p=1.000 n=12}
_{Memory Used}	_{548,181k (± 0.02%)}	_{541,506k (± 0.02%)}	_{-6,676k (- 1.22%)}	_541,309k	_541,769k	_{p=0.000 n=12}
_{Memory Allocs}	_{4,889,247 (± 0.09%)}	_{4,888,201 (± 0.13%)}	_~	_4,875,554	_4,910,425	_{p=0.514 n=12}
_{Config Time}	_0.003s	_0.003s	_~	_~	_~	_{p=1.000 n=12}
_{Parse Time}	_{0.140s (± 2.58%)}	_{0.144s (± 3.27%)}	_~	_0.133s	_0.158s	_{p=0.223 n=12}
_{Bind Time}	_{0.050s (±12.66%)}	_{0.053s (±19.22%)}	_~	_0.033s	_0.073s	_{p=0.450 n=12}
_{Check Time}	_{1.145s (± 0.47%)}	_{1.141s (± 0.50%)}	_~	_1.127s	_1.160s	_{p=0.370 n=12}
_{Emit Time}	_0.000s	_0.000s	_~	_~	_~	_{p=1.000 n=12}
_{Total Time}	_{1.349s (± 0.62%)}	_{1.349s (± 0.84%)}	_~	_1.317s	_1.381s	_{p=0.523 n=12}

System info unknown

Hosts

native

Scenarios

Compiler-Unions - native
angular-1 - native
mui-docs - native
strada-build-src - native
strada-compiler - native
ts-pre-modules - native
vscode - native
webpack - native
xstate-main - native

_Benchmark	_Name	_Iterations
_Current	_pr	₁₂
_Baseline	_baseline	₁₂

lsp

Comparison Report - baseline..pr

_Metric	_baseline	_pr	_Delta	_Best	_Worst	_p-value
_{Compiler-UnionsLSP - native}
_{Req 1 - updateOpen}	_{10ms (± 7.90%)}	_{12ms (±11.91%)}	_~	_9ms	_15ms	_{p=0.151 n=12}
_{Req 2 - geterr}	_{569ms (± 0.23%)}	_{566ms (± 0.37%)}	_{-3ms (- 0.60%)}	_560ms	_571ms	_{p=0.010 n=12}
_{Req 3 - references}	_{45ms (± 5.20%)}	_{43ms (± 5.50%)}	_~	_37ms	_49ms	_{p=0.253 n=12}
_{Req 4 - navto}	_{16ms (± 1.90%)}	_{16ms (± 1.75%)}	_~	_16ms	_17ms	_{p=1.000 n=12}
_{Req 5 - completionInfo count}	_1,363	_1,363	_~	_~	_~	_{p=1.000 n=12}
_{Req 5 - completionInfo}	_{16ms (± 4.85%)}	_{15ms (± 4.75%)}	_~	_14ms	_18ms	_{p=0.380 n=12}
_{CompilerLSP - native}
_{Req 1 - updateOpen}	_{13ms (±16.41%)}	_{11ms (±11.95%)}	_~	_9ms	_15ms	_{p=0.214 n=12}
_{Req 2 - geterr}	_{296ms (± 0.54%)}	_{296ms (± 0.55%)}	_~	_292ms	_300ms	_{p=0.679 n=12}
_{Req 3 - references}	_{50ms (± 2.99%)}	_{49ms (± 4.01%)}	_~	_44ms	_54ms	_{p=0.853 n=12}
_{Req 4 - navto}	_{17ms (± 3.86%)}	_{17ms (± 4.95%)}	_~	_16ms	_20ms	_{p=0.967 n=12}
_{Req 5 - completionInfo count}	_1,525	_1,525	_~	_~	_~	_{p=1.000 n=12}
_{Req 5 - completionInfo}	_{17ms (± 7.51%)}	_{18ms (±12.21%)}	_~	_14ms	_23ms	_{p=0.999 n=12}

System info unknown

Hosts

native

Scenarios

CompilerLSP - native
Compiler-UnionsLSP - native
xstate-main-1-LSP - native

_Benchmark	_Name	_Iterations
_Current	_pr	₁₂
_Baseline	_baseline	₁₂

startup

Comparison Report - baseline..pr

_Metric	_baseline	_pr	_Delta	_Best	_Worst	_p-value
_{lsp-startup - native}
_{Execution time}	_{4.81ms (±365.09%)}	_{4.80ms (±365.09%)}	_{-0.00ms (- 0.08%)}	_0.00ms	_484.72ms	_{p=0.000 n=1200}
_{tsgo-startup - native}
_{Execution time}	_{5.87ms (±365.09%)}	_{5.85ms (±365.09%)}	_~	_0.00ms	_595.14ms	_{p=0.052 n=1200}

System info unknown

Hosts

native

Scenarios

lsp-startup - native
tsgo-startup - native

_Benchmark	_Name	_Iterations
_Current	_pr	₁₂
_Baseline	_baseline	₁₂

Developer Information:

Download Benchmarks

Daniel Rosenwasser (DanielRosenwasser) · 2026-10-12T23:41:06Z

TypeScript Bot (@typescript-bot) perf test this

typescript-automation · 2026-10-12T23:41:12Z

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

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

typescript-automation · 2026-10-13T00:11:17Z

Daniel Rosenwasser (@DanielRosenwasser)
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=12}
_Symbols	_115,276	_115,276	_~	_~	_~	_{p=1.000 n=12}
_Types	_79,613	_79,613	_~	_~	_~	_{p=1.000 n=12}
_{Memory Used}	_{133,249k (± 0.04%)}	_{132,338k (± 0.06%)}	_{-910k (- 0.68%)}	_132,150k	_132,551k	_{p=0.000 n=12}
_{Memory Allocs}	_{2,190,300 (± 0.01%)}	_{2,190,301 (± 0.01%)}	_~	_2,190,058	_2,190,702	_{p=0.713 n=12}
_{Config Time}	_0.000s	_0.000s	_~	_~	_~	_{p=1.000 n=12}
_{Parse Time}	_{0.049s (± 2.89%)}	_{0.051s (± 2.88%)}	_~	_0.046s	_0.054s	_{p=0.256 n=12}
_{Bind Time}	_{0.015s (± 8.99%)}	_{0.016s (±12.88%)}	_~	_0.013s	_0.022s	_{p=0.824 n=12}
_{Check Time}	_{0.604s (± 1.06%)}	_{0.593s (± 0.60%)}	_{-0.011s (- 1.86%)}	_0.586s	_0.605s	_{p=0.001 n=12}
_{Emit Time}	_{0.325s (± 2.89%)}	_{0.333s (± 2.09%)}	_~	_0.315s	_0.354s	_{p=0.138 n=12}
_{Total Time}	_{1.002s (± 1.10%)}	_{1.000s (± 0.76%)}	_~	_0.980s	_1.023s	_{p=0.966 n=12}
_{angular-1 - native}
_Errors	₃	₃	_~	_~	_~	_{p=1.000 n=12}
_Symbols	_{845,767 (± 0.06%)}	_{845,770 (± 0.04%)}	_~	_845,031	_846,885	_{p=0.932 n=12}
_Types	_{248,125 (± 0.00%)}	_{248,124 (± 0.00%)}	_~	_248,122	_248,126	_{p=0.603 n=12}
_{Memory Used}	_{746,124k (± 0.02%)}	_{741,776k (± 0.01%)}	_{-4,349k (- 0.58%)}	_741,532k	_742,037k	_{p=0.000 n=12}
_{Memory Allocs}	_{12,916,991 (± 0.05%)}	_{12,914,065 (± 0.03%)}	_~	_12,908,802	_12,934,357	_{p=0.378 n=12}
_{Config Time}	_{0.020s (± 1.60%)}	_{0.021s (± 1.37%)}	_~	_0.020s	_0.021s	_{p=0.400 n=12}
_{Parse Time}	_{0.314s (± 2.47%)}	_{0.322s (± 3.20%)}	_~	_0.290s	_0.341s	_{p=0.155 n=12}
_{Bind Time}	_{0.079s (± 9.91%)}	_{0.082s (±14.21%)}	_~	_0.070s	_0.131s	_{p=0.398 n=12}
_{Check Time}	_0s	_0s	_~	_~	_~	_{p=1.000 n=12}
_{Emit Time}	_{1.886s (± 0.63%)}	_{1.879s (± 1.64%)}	_~	_1.831s	_1.954s	_{p=0.312 n=12}
_{Total Time}	_{2.316s (± 0.72%)}	_{2.324s (± 1.57%)}	_~	_2.268s	_2.413s	_{p=0.504 n=12}
_{mui-docs - native}
_Errors	_11,405	_11,405	_~	_~	_~	_{p=1.000 n=12}
_Symbols	_4,339,337	_4,339,337	_~	_~	_~	_{p=1.000 n=12}
_Types	_1,379,387	_1,379,387	_~	_~	_~	_{p=1.000 n=12}
_{Memory Used}	_{2,774,715k (± 0.06%)}	_{2,743,356k (± 0.05%)}	_{-31,359k (- 1.13%)}	_2,740,965k	_2,746,279k	_{p=0.000 n=12}
_{Memory Allocs}	_{32,725,769 (± 0.06%)}	_{32,707,150 (± 0.06%)}	_~	_32,670,629	_32,785,780	_{p=0.128 n=12}
_{Config Time}	_0.017s	_0.017s	_~	_~	_~	_{p=1.000 n=12}
_{Parse Time}	_{0.499s (± 2.78%)}	_{0.508s (± 1.91%)}	_~	_0.486s	_0.538s	_{p=0.235 n=12}
_{Bind Time}	_0.002s	_0.002s	_~	_~	_~	_{p=1.000 n=12}
_{Check Time}	_{8.847s (± 0.57%)}	_{8.848s (± 0.16%)}	_~	_8.802s	_8.879s	_{p=0.091 n=12}
_{Emit Time}	_{0.431s (± 5.07%)}	_{0.451s (±10.33%)}	_~	_0.418s	_0.645s	_{p=0.944 n=12}
_{Total Time}	_{10.565s (± 0.50%)}	_{10.590s (± 0.41%)}	_~	_10.518s	_10.740s	_{p=0.110 n=12}
_{strada-build-src - native}
_Errors	₀	₀	_~	_~	_~	_{p=1.000 n=12}
_Symbols	_1,388,669	_1,388,669	_~	_~	_~	_{p=1.000 n=12}
_Types	_441,862	_441,862	_~	_~	_~	_{p=1.000 n=12}
_{Memory Used}	_{1,627,688k (± 1.21%)}	_{1,619,314k (± 1.00%)}	_~	_1,589,161k	_1,659,273k	_{p=0.443 n=12}
_{Memory Allocs}	_{92,207,138 (± 0.18%)}	_{92,257,067 (± 0.13%)}	_~	_91,804,331	_92,431,076	_{p=0.551 n=12}
_{Config Time}	_{0.004s (±14.15%)}	_{0.004s (±15.38%)}	_~	_0.002s	_0.005s	_{p=0.549 n=12}
_{Parse Time}	_{0.242s (± 3.47%)}	_{0.236s (± 3.38%)}	_~	_0.211s	_0.251s	_{p=0.271 n=12}
_{Bind Time}	_0.000s	_0.000s	_~	_~	_~	_{p=1.000 n=12}
_{Check Time}	_{2.182s (± 0.32%)}	_{2.162s (± 0.47%)}	_{-0.021s (- 0.94%)}	_2.126s	_2.187s	_{p=0.001 n=12}
_{Emit Time}	_{0.370s (± 2.57%)}	_{0.366s (± 3.83%)}	_~	_0.329s	_0.400s	_{p=0.766 n=12}
_{Total Time}	_{28.451s (± 0.59%)}	_{28.211s (± 0.66%)}	_~	_27.714s	_28.650s	_{p=0.060 n=12}
_{strada-compiler - native}
_Errors	₀	₀	_~	_~	_~	_{p=1.000 n=12}
_Symbols	_334,953	_334,953	_~	_~	_~	_{p=1.000 n=12}
_Types	_197,616	_197,616	_~	_~	_~	_{p=1.000 n=12}
_{Memory Used}	_{296,070k (± 0.02%)}	_{293,713k (± 0.02%)}	_{-2,357k (- 0.80%)}	_293,592k	_293,885k	_{p=0.000 n=12}
_{Memory Allocs}	_{4,621,661 (± 0.01%)}	_{4,621,695 (± 0.01%)}	_~	_4,620,769	_4,622,650	_{p=0.932 n=12}
_{Config Time}	_0.001s	_0.001s	_~	_~	_~	_{p=1.000 n=12}
_{Parse Time}	_{0.112s (± 4.79%)}	_{0.115s (± 3.53%)}	_~	_0.105s	_0.126s	_{p=0.433 n=12}
_{Bind Time}	_0.000s	_0.000s	_~	_~	_~	_{p=1.000 n=12}
_{Check Time}	_{1.034s (± 0.51%)}	_{1.032s (± 0.49%)}	_~	_1.019s	_1.044s	_{p=0.560 n=12}
_{Emit Time}	_{0.150s (± 3.90%)}	_{0.142s (± 7.51%)}	_~	_0.097s	_0.171s	_{p=0.062 n=12}
_{Total Time}	_{1.351s (± 0.71%)}	_{1.341s (± 0.75%)}	_~	_1.312s	_1.363s	_{p=0.117 n=12}
_{ts-pre-modules - native}
_Errors	₈₇	₈₇	_~	_~	_~	_{p=1.000 n=12}
_Symbols	_303,834	_303,834	_~	_~	_~	_{p=1.000 n=12}
_Types	_181,663	_181,663	_~	_~	_~	_{p=1.000 n=12}
_{Memory Used}	_{256,622k (± 0.01%)}	_{254,379k (± 0.01%)}	_{-2,243k (- 0.87%)}	_254,329k	_254,465k	_{p=0.000 n=12}
_{Memory Allocs}	_{1,613,939 (± 0.01%)}	_{1,614,101 (± 0.02%)}	_~	_1,613,382	_1,614,712	_{p=0.443 n=12}
_{Config Time}	_0.000s	_0.000s	_~	_~	_~	_{p=1.000 n=12}
_{Parse Time}	_{0.079s (± 3.42%)}	_{0.079s (± 4.22%)}	_~	_0.072s	_0.089s	_{p=0.809 n=12}
_{Bind Time}	_{0.032s (±14.95%)}	_{0.029s (± 8.90%)}	_~	_0.023s	_0.038s	_{p=0.558 n=12}
_{Check Time}	_{0.681s (± 0.93%)}	_{0.681s (± 0.88%)}	_~	_0.666s	_0.694s	_{p=0.876 n=12}
_{Emit Time}	_0.000s	_0.000s	_~	_~	_~	_{p=1.000 n=12}
_{Total Time}	_{0.804s (± 0.75%)}	_{0.801s (± 0.77%)}	_~	_0.785s	_0.814s	_{p=0.599 n=12}
_{vscode - native}
_Errors	₃₉₆	₃₉₆	_~	_~	_~	_{p=1.000 n=12}
_Symbols	_11,305,944	_11,305,944	_~	_~	_~	_{p=1.000 n=12}
_Types	_3,739,044	_3,739,044	_~	_~	_~	_{p=1.000 n=12}
_{Memory Used}	_{6,457,099k (± 0.02%)}	_{6,372,015k (± 0.01%)}	_{-85,084k (- 1.32%)}	_6,370,082k	_6,374,628k	_{p=0.000 n=12}
_{Memory Allocs}	_{55,504,961 (± 0.03%)}	_{55,501,667 (± 0.03%)}	_~	_55,485,961	_55,588,595	_{p=1.000 n=12}
_{Config Time}	_{0.075s (± 0.43%)}	_{0.075s (± 0.24%)}	_~	_0.075s	_0.076s	_{p=1.000 n=12}
_{Parse Time}	_{1.849s (± 2.95%)}	_{1.814s (± 3.54%)}	_~	_1.689s	_1.964s	_{p=0.340 n=12}
_{Bind Time}	_{0.549s (±15.49%)}	_{0.677s (±21.35%)}	_~	_0.437s	_0.943s	_{p=0.452 n=12}
_{Check Time}	_{14.799s (± 0.87%)}	_{14.717s (± 1.04%)}	_~	_14.478s	_15.115s	_{p=0.326 n=12}
_{Emit Time}	_{5.024s (± 9.44%)}	_{5.271s (± 9.73%)}	_~	_4.149s	_6.065s	_{p=0.193 n=12}
_{Total Time}	_{22.384s (± 1.73%)}	_{22.643s (± 2.01%)}	_~	_21.587s	_23.425s	_{p=0.291 n=12}
_{webpack - native}
_Errors	₅₈₅	₅₈₅	_~	_~	_~	_{p=1.000 n=12}
_Symbols	_1,316,105	_1,316,105	_~	_~	_~	_{p=1.000 n=12}
_Types	_617,840	_617,840	_~	_~	_~	_{p=1.000 n=12}
_{Memory Used}	_{947,887k (± 0.02%)}	_{938,576k (± 0.02%)}	_{-9,312k (- 0.98%)}	_938,308k	_939,105k	_{p=0.000 n=12}
_{Memory Allocs}	_{6,671,820 (± 0.01%)}	_{6,673,588 (± 0.03%)}	_~	_6,669,799	_6,682,962	_{p=0.114 n=12}
_{Config Time}	_0.009s	_0.009s	_~	_~	_~	_{p=1.000 n=12}
_{Parse Time}	_{0.309s (± 2.70%)}	_{0.303s (± 3.91%)}	_~	_0.278s	_0.334s	_{p=0.451 n=12}
_{Bind Time}	_{0.080s (±18.69%)}	_{0.080s (±20.42%)}	_~	_0.063s	_0.140s	_{p=0.987 n=12}
_{Check Time}	_{2.226s (± 0.66%)}	_{2.232s (± 0.60%)}	_~	_2.191s	_2.252s	_{p=0.401 n=12}
_{Emit Time}	_0.000s	_0.000s	_~	_~	_~	_{p=1.000 n=12}
_{Total Time}	_{2.659s (± 0.31%)}	_{2.658s (± 0.46%)}	_~	_2.615s	_2.690s	_{p=0.832 n=12}
_{xstate-main - native}
_Errors	₀	₀	_~	_~	_~	_{p=1.000 n=12}
_Symbols	_1,065,632	_1,065,632	_~	_~	_~	_{p=1.000 n=12}
_Types	_390,378	_390,378	_~	_~	_~	_{p=1.000 n=12}
_{Memory Used}	_{548,357k (± 0.03%)}	_{541,525k (± 0.03%)}	_{-6,832k (- 1.25%)}	_541,262k	_542,098k	_{p=0.000 n=12}
_{Memory Allocs}	_{4,890,205 (± 0.08%)}	_{4,889,077 (± 0.09%)}	_~	_4,877,650	_4,906,068	_{p=0.590 n=12}
_{Config Time}	_0.003s	_0.003s	_~	_~	_~	_{p=1.000 n=12}
_{Parse Time}	_{0.145s (± 3.88%)}	_{0.140s (± 4.39%)}	_~	_0.130s	_0.157s	_{p=0.202 n=12}
_{Bind Time}	_{0.042s (±19.16%)}	_{0.053s (±15.68%)}	_{🔻+0.011s (+25.70%)}	_0.033s	_0.066s	_{p=0.045 n=12}
_{Check Time}	_{1.138s (± 0.38%)}	_{1.141s (± 0.36%)}	_~	_1.130s	_1.154s	_{p=0.433 n=12}
_{Emit Time}	_0.000s	_0.000s	_~	_~	_~	_{p=1.000 n=12}
_{Total Time}	_{1.335s (± 0.61%)}	_{1.347s (± 0.76%)}	_~	_1.318s	_1.384s	_{p=0.075 n=12}

System info unknown

Hosts

native

Scenarios

Compiler-Unions - native
angular-1 - native
mui-docs - native
strada-build-src - native
strada-compiler - native
ts-pre-modules - native
vscode - native
webpack - native
xstate-main - native

_Benchmark	_Name	_Iterations
_Current	_pr	₁₂
_Baseline	_baseline	₁₂

lsp

Comparison Report - baseline..pr

_Metric	_baseline	_pr	_Delta	_Best	_Worst	_p-value
_{Compiler-UnionsLSP - native}
_{Req 1 - updateOpen}	_{11ms (±15.77%)}	_{12ms (±16.47%)}	_~	_9ms	_18ms	_{p=0.315 n=12}
_{Req 2 - geterr}	_{570ms (± 0.41%)}	_{565ms (± 0.45%)}	_{-4ms (- 0.76%)}	_557ms	_571ms	_{p=0.021 n=12}
_{Req 3 - references}	_{44ms (± 4.82%)}	_{43ms (± 4.52%)}	_~	_39ms	_49ms	_{p=0.943 n=12}
_{Req 4 - navto}	_{16ms (± 1.68%)}	_{17ms (± 4.42%)}	_~	_16ms	_20ms	_{p=0.167 n=12}
_{Req 5 - completionInfo count}	_1,363	_1,363	_~	_~	_~	_{p=1.000 n=12}
_{Req 5 - completionInfo}	_{16ms (± 4.85%)}	_{17ms (± 8.79%)}	_~	_13ms	_21ms	_{p=0.272 n=12}
_{CompilerLSP - native}
_{Req 1 - updateOpen}	_{14ms (±10.45%)}	_{14ms (±10.23%)}	_~	_12ms	_17ms	_{p=0.658 n=12}
_{Req 2 - geterr}	_{362ms (± 0.71%)}	_{360ms (± 0.60%)}	_~	_356ms	_368ms	_{p=0.255 n=12}
_{Req 3 - references}	_{63ms (± 2.25%)}	_{60ms (± 4.60%)}	_~	_53ms	_66ms	_{p=0.063 n=12}
_{Req 4 - navto}	_{20ms (± 7.85%)}	_{20ms (± 4.24%)}	_~	_19ms	_24ms	_{p=0.313 n=12}
_{Req 5 - completionInfo count}	_1,525	_1,525	_~	_~	_~	_{p=1.000 n=12}
_{Req 5 - completionInfo}	_{19ms (± 8.47%)}	_{21ms (± 7.38%)}	_~	_17ms	_24ms	_{p=0.099 n=12}

System info unknown

Hosts

native

Scenarios

CompilerLSP - native
Compiler-UnionsLSP - native
xstate-main-1-LSP - native

_Benchmark	_Name	_Iterations
_Current	_pr	₁₂
_Baseline	_baseline	₁₂

startup

Comparison Report - baseline..pr

_Metric	_baseline	_pr	_Delta	_Best	_Worst	_p-value
_{lsp-startup - native}
_{Execution time}	_{4.80ms (±365.08%)}	_{4.80ms (±365.08%)}	_{-0.00ms (- 0.02%)}	_0.00ms	_483.24ms	_{p=0.000 n=1200}
_{tsgo-startup - native}
_{Execution time}	_{5.83ms (±365.08%)}	_{5.86ms (±365.10%)}	_{+0.03ms (+ 0.54%)}	_0.00ms	_595.93ms	_{p=0.001 n=1200}

System info unknown

Hosts

native

Scenarios

lsp-startup - native
tsgo-startup - native

_Benchmark	_Name	_Iterations
_Current	_pr	₁₂
_Baseline	_baseline	₁₂

Developer Information:

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Daniel Rosenwasser (DanielRosenwasser) added 3 commits October 12, 2026 00:43

Try using a map for resolved write-side types.

533c3ff

Merge remote-tracking branch 'origin/main' into writeTypesSparseSet

ed92f5b

Merge remote-tracking branch 'origin/main' into writeTypesSparseSet

06cc3bd

typescript-automation Bot assigned Daniel Rosenwasser (DanielRosenwasser) Oct 12, 2026

typescript-automation Bot added Author: Team For Uncommitted Bug PR for untriaged, rejected, closed or missing bug labels Oct 12, 2026

Fetch links only when writeType is not available.

a71dc93

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Try using a map for resolved write-side types. - #64756

Try using a map for resolved write-side types.#64756
Daniel Rosenwasser (DanielRosenwasser) wants to merge 4 commits into
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