Fixed issues in relater related to tuples with variadic elements #62983

Andarist · 2026-01-13T18:02:22Z

RyanCavanaugh · 2026-01-14T18:13:14Z

typescript-bot · 2026-01-14T18:13:19Z

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

Command	Status	Results
`test top400`	✅ Started	✅ Results
`user test this`	✅ Started	✅ Results
`run dt`	✅ Started	✅ Results
`perf test this faster`	✅ Started	👀 Results

typescript-bot · 2026-01-14T18:35:53Z

Hey @RyanCavanaugh, the results of running the DT tests are ready.

Everything looks the same!

You can check the log here.

typescript-bot · 2026-01-14T18:42:52Z

@RyanCavanaugh Here are the results of running the user tests with tsc comparing main and refs/pull/62983/merge:

There were infrastructure failures potentially unrelated to your change:

1 instance of "Package install failed"
1 instance of "Git clone failed"

Otherwise...

Everything looks good!

typescript-bot · 2026-01-14T19:16:52Z

@RyanCavanaugh
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 - node (v18.15.0, x64)}
_Errors	₂	₂	_~	_~	_~	_{p=1.000 n=6}
_Symbols	_62,370	_62,370	_~	_~	_~	_{p=1.000 n=6}
_Types	_50,387	_50,387	_~	_~	_~	_{p=1.000 n=6}
_{Memory used}	_{193,092k (± 0.75%)}	_{193,745k (± 0.98%)}	_~	_192,447k	_196,280k	_{p=0.297 n=6}
_{Parse Time}	_{1.30s (± 0.97%)}	_{1.29s (± 0.65%)}	_~	_1.29s	_1.31s	_{p=0.445 n=6}
_{Bind Time}	_0.76s	_0.76s	_~	_~	_~	_{p=1.000 n=6}
_{Check Time}	_{9.87s (± 0.39%)}	_{9.87s (± 0.31%)}	_~	_9.83s	_9.92s	_{p=0.871 n=6}
_{Emit Time}	_{2.75s (± 0.38%)}	_{2.73s (± 0.44%)}	_~	_2.72s	_2.75s	_{p=0.084 n=6}
_{Total Time}	_{14.68s (± 0.22%)}	_{14.66s (± 0.28%)}	_~	_14.62s	_14.73s	_{p=0.195 n=6}
_{angular-1 - node (v18.15.0, x64)}
_Errors	₂	₂	_~	_~	_~	_{p=1.000 n=6}
_Symbols	_955,823	_955,823	_~	_~	_~	_{p=1.000 n=6}
_Types	_415,853	_415,853	_~	_~	_~	_{p=1.000 n=6}
_{Memory used}	_{1,253,937k (± 0.00%)}	_{1,253,911k (± 0.00%)}	_~	_1,253,847k	_1,254,014k	_{p=0.378 n=6}
_{Parse Time}	_{6.52s (± 0.64%)}	_{6.56s (± 0.61%)}	_~	_6.51s	_6.62s	_{p=0.258 n=6}
_{Bind Time}	_{1.96s (± 0.43%)}	_{1.96s (± 0.38%)}	_~	_1.95s	_1.97s	_{p=0.652 n=6}
_{Check Time}	_{32.38s (± 0.33%)}	_{32.47s (± 0.30%)}	_~	_32.34s	_32.60s	_{p=0.127 n=6}
_{Emit Time}	_{14.98s (± 0.32%)}	_{14.99s (± 0.34%)}	_~	_14.94s	_15.08s	_{p=0.688 n=6}
_{Total Time}	_{55.84s (± 0.23%)}	_{55.97s (± 0.27%)}	_~	_55.75s	_56.14s	_{p=0.172 n=6}
_{mui-docs - node (v18.15.0, x64)}
_Errors	₀	₀	_~	_~	_~	_{p=1.000 n=6}
_Symbols	_2,699,181	_2,699,181	_~	_~	_~	_{p=1.000 n=6}
_Types	_937,307	_937,307	_~	_~	_~	_{p=1.000 n=6}
_{Memory used}	_{3,028,637k (± 0.00%)}	_{3,028,579k (± 0.00%)}	_~	_3,028,498k	_3,028,644k	_{p=0.230 n=6}
_{Parse Time}	_{8.63s (± 0.46%)}	_{8.62s (± 0.19%)}	_~	_8.60s	_8.64s	_{p=1.000 n=6}
_{Bind Time}	_2.29s	_{2.29s (± 0.33%)}	_~	_2.28s	_2.30s	_{p=0.598 n=6}
_{Check Time}	_{93.78s (± 0.25%)}	_{93.87s (± 0.28%)}	_~	_93.59s	_94.31s	_{p=0.748 n=6}
_{Emit Time}	_0.31s	_0.31s	_~	_~	_~	_{p=1.000 n=6}
_{Total Time}	_{105.00s (± 0.22%)}	_{105.09s (± 0.24%)}	_~	_104.79s	_105.51s	_{p=0.810 n=6}
_{self-build-src - node (v18.15.0, x64)}
_Errors	₀	₀	_~	_~	_~	_{p=1.000 n=6}
_Symbols	_1,252,015	_1,252,016	_{+1 (+ 0.00%)}	_~	_~	_{p=0.001 n=6}
_Types	_259,850	_259,850	_~	_~	_~	_{p=1.000 n=6}
_{Memory used}	_{2,508,410k (±11.84%)}	_{2,508,625k (±11.88%)}	_~	_2,386,640k	_3,117,446k	_{p=0.575 n=6}
_{Parse Time}	_{5.18s (± 0.88%)}	_{5.19s (± 0.94%)}	_~	_5.15s	_5.28s	_{p=0.872 n=6}
_{Bind Time}	_{1.86s (± 1.30%)}	_{1.86s (± 1.62%)}	_~	_1.81s	_1.90s	_{p=0.806 n=6}
_{Check Time}	_{35.56s (± 0.50%)}	_{35.57s (± 0.47%)}	_~	_35.40s	_35.87s	_{p=0.575 n=6}
_{Emit Time}	_{3.00s (± 1.54%)}	_{3.03s (± 2.15%)}	_~	_2.92s	_3.12s	_{p=0.471 n=6}
_{Total Time}	_{45.63s (± 0.44%)}	_{45.64s (± 0.27%)}	_~	_45.48s	_45.86s	_{p=0.873 n=6}
_{self-build-src-public-api - node (v18.15.0, x64)}
_Errors	₀	₀	_~	_~	_~	_{p=1.000 n=6}
_Symbols	_1,252,015	_1,252,016	_{+1 (+ 0.00%)}	_~	_~	_{p=0.001 n=6}
_Types	_259,850	_259,850	_~	_~	_~	_{p=1.000 n=6}
_{Memory used}	_{3,061,178k (± 9.65%)}	_{3,182,505k (± 0.02%)}	_~	_3,181,652k	_3,183,419k	_{p=0.173 n=6}
_{Parse Time}	_{8.36s (± 1.55%)}	_{8.44s (± 0.60%)}	_~	_8.37s	_8.50s	_{p=0.295 n=6}
_{Bind Time}	_{2.79s (± 1.60%)}	_{2.76s (± 0.93%)}	_~	_2.72s	_2.79s	_{p=0.297 n=6}
_{Check Time}	_{53.18s (± 0.36%)}	_{53.32s (± 0.14%)}	_~	_53.23s	_53.39s	_{p=0.066 n=6}
_{Emit Time}	_{4.33s (± 2.14%)}	_{4.35s (± 1.94%)}	_~	_4.20s	_4.44s	_{p=0.810 n=6}
_{Total Time}	_{68.66s (± 0.46%)}	_{68.89s (± 0.19%)}	_~	_68.67s	_69.08s	_{p=0.173 n=6}
_{self-compiler - node (v18.15.0, x64)}
_Errors	₀	₀	_~	_~	_~	_{p=1.000 n=6}
_Symbols	_264,672	_264,673	_{+1 (+ 0.00%)}	_~	_~	_{p=0.001 n=6}
_Types	_104,063	_104,063	_~	_~	_~	_{p=1.000 n=6}
_{Memory used}	_{442,995k (± 0.02%)}	_{443,063k (± 0.02%)}	_~	_442,856k	_443,137k	_{p=0.230 n=6}
_{Parse Time}	_{3.53s (± 0.91%)}	_{3.52s (± 0.68%)}	_~	_3.48s	_3.54s	_{p=0.368 n=6}
_{Bind Time}	_{1.38s (± 0.99%)}	_{1.39s (± 0.59%)}	_~	_1.38s	_1.40s	_{p=0.868 n=6}
_{Check Time}	_{19.22s (± 0.20%)}	_{19.19s (± 0.25%)}	_~	_19.13s	_19.27s	_{p=0.286 n=6}
_{Emit Time}	_{1.54s (± 0.86%)}	_{1.54s (± 1.46%)}	_~	_1.52s	_1.58s	_{p=1.000 n=6}
_{Total Time}	_{25.68s (± 0.26%)}	_{25.64s (± 0.31%)}	_~	_25.57s	_25.78s	_{p=0.335 n=6}
_{ts-pre-modules - node (v18.15.0, x64)}
_Errors	₇₃	₇₃	_~	_~	_~	_{p=1.000 n=6}
_Symbols	_225,493	_225,493	_~	_~	_~	_{p=1.000 n=6}
_Types	_94,373	_94,373	_~	_~	_~	_{p=1.000 n=6}
_{Memory used}	_{369,831k (± 0.02%)}	_{369,869k (± 0.05%)}	_~	_369,770k	_370,220k	_{p=0.936 n=6}
_{Parse Time}	_{3.55s (± 1.03%)}	_{3.52s (± 0.71%)}	_~	_3.48s	_3.55s	_{p=0.172 n=6}
_{Bind Time}	_{2.04s (± 0.96%)}	_{2.04s (± 1.57%)}	_~	_2.01s	_2.09s	_{p=0.935 n=6}
_{Check Time}	_{20.62s (± 0.45%)}	_{20.72s (± 0.45%)}	_~	_20.59s	_20.83s	_{p=0.149 n=6}
_{Emit Time}	_0.00s	_{0.00s (±244.70%)}	_~	_0.00s	_0.01s	_{p=0.405 n=6}
_{Total Time}	_{26.22s (± 0.44%)}	_{26.28s (± 0.42%)}	_~	_26.15s	_26.42s	_{p=0.423 n=6}
_{vscode - node (v18.15.0, x64)}
_Errors	₁₁	₁₁	_~	_~	_~	_{p=1.000 n=6}
_Symbols	_4,107,898	_4,107,898	_~	_~	_~	_{p=1.000 n=6}
_Types	_1,299,167	_1,299,167	_~	_~	_~	_{p=1.000 n=6}
_{Memory used}	_{3,901,470k (± 0.00%)}	_{3,901,411k (± 0.00%)}	_~	_3,901,345k	_3,901,486k	_{p=0.810 n=6}
_{Parse Time}	_{19.53s (± 1.28%)}	_{19.62s (± 0.50%)}	_~	_19.46s	_19.72s	_{p=0.810 n=6}
_{Bind Time}	_{6.98s (±13.07%)}	_{6.57s (± 0.64%)}	_~	_6.50s	_6.62s	_{p=0.873 n=6}
_{Check Time}	_{136.96s (± 3.47%)}	_{138.07s (± 2.02%)}	_~	_135.69s	_142.18s	_{p=0.471 n=6}
_{Emit Time}	_{54.91s (±13.60%)}	_{50.58s (±15.91%)}	_~	_46.93s	_67.02s	_{p=0.128 n=6}
_{Total Time}	_{218.38s (± 4.81%)}	_{214.85s (± 4.52%)}	_~	_208.97s	_233.84s	_{p=0.575 n=6}
_{webpack - node (v18.15.0, x64)}
_Errors	₄₁	₄₁	_~	_~	_~	_{p=1.000 n=6}
_Symbols	_384,170	_384,170	_~	_~	_~	_{p=1.000 n=6}
_Types	_168,308	_168,308	_~	_~	_~	_{p=1.000 n=6}
_{Memory used}	_{543,305k (± 0.03%)}	_{543,462k (± 0.04%)}	_~	_543,179k	_543,660k	_{p=0.128 n=6}
_{Parse Time}	_{4.70s (± 0.35%)}	_{4.71s (± 0.42%)}	_~	_4.69s	_4.74s	_{p=0.139 n=6}
_{Bind Time}	_{2.02s (± 1.02%)}	_{2.00s (± 0.80%)}	_~	_1.98s	_2.02s	_{p=0.052 n=6}
_{Check Time}	_{23.81s (± 1.50%)}	_{23.54s (± 1.04%)}	_~	_23.35s	_24.02s	_{p=0.336 n=6}
_{Emit Time}	_0.00s	_0.00s	_~	_~	_~	_{p=1.000 n=6}
_{Total Time}	_{30.53s (± 1.22%)}	_{30.25s (± 0.86%)}	_~	_30.09s	_30.77s	_{p=0.575 n=6}
_{xstate-main - node (v18.15.0, x64)}
_Errors	₃₀	₃₀	_~	_~	_~	_{p=1.000 n=6}
_Symbols	_696,322	_696,322	_~	_~	_~	_{p=1.000 n=6}
_Types	_212,496	_212,496	_~	_~	_~	_{p=1.000 n=6}
_{Memory used}	_{590,963k (± 0.02%)}	_{591,151k (± 0.02%)}	_{+188k (+ 0.03%)}	_590,931k	_591,259k	_{p=0.045 n=6}
_{Parse Time}	_{4.14s (± 0.37%)}	_{4.15s (± 0.74%)}	_~	_4.12s	_4.20s	_{p=0.805 n=6}
_{Bind Time}	_{1.41s (± 1.47%)}	_{1.40s (± 1.17%)}	_~	_1.38s	_1.42s	_{p=0.511 n=6}
_{Check Time}	_{21.52s (± 1.56%)}	_{21.07s (± 1.55%)}	_~	_20.82s	_21.71s	_{p=0.054 n=6}
_{Emit Time}	_{0.00s (±244.70%)}	_{0.00s (±244.70%)}	_~	_0.00s	_0.01s	_{p=1.000 n=6}
_{Total Time}	_{27.07s (± 1.28%)}	_{26.62s (± 1.19%)}	_~	_26.33s	_27.22s	_{p=0.077 n=6}

System info unknown

Hosts

node (v18.15.0, x64)

Scenarios

Compiler-Unions - node (v18.15.0, x64)
angular-1 - node (v18.15.0, x64)
mui-docs - node (v18.15.0, x64)
self-build-src - node (v18.15.0, x64)
self-build-src-public-api - node (v18.15.0, x64)
self-compiler - node (v18.15.0, x64)
ts-pre-modules - node (v18.15.0, x64)
vscode - node (v18.15.0, x64)
webpack - node (v18.15.0, x64)
xstate-main - node (v18.15.0, x64)

_Benchmark	_Name	_Iterations
_Current	_pr	₆
_Baseline	_baseline	₆

Developer Information:

Download Benchmarks

typescript-bot · 2026-01-14T19:42:46Z

@RyanCavanaugh Here are the results of running the top 400 repos with tsc comparing main and refs/pull/62983/merge:

Everything looks good!

Fixed issues in relater related to tuples with variadic elements

4499503

typescript-bot added the For Backlog Bug PRs that fix a backlog bug label Jan 13, 2026

Andarist added 4 commits January 13, 2026 21:13

extra tweak

4c6c8df

fix confusing error

63a090d

add test

e9ef752

Merge remote-tracking branch 'origin/main' into fix/tuple-matching-crash

b5b9f82

Andarist marked this pull request as ready for review January 14, 2026 09:51

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Fixed issues in relater related to tuples with variadic elements #62983

Fixed issues in relater related to tuples with variadic elements #62983

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Fixed issues in relater related to tuples with variadic elements #62983

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