Un‑consolidate and fix `WeakMap` constructor overloads #56713

ExE-Boss · 2023-12-08T12:53:57Z

Fixes #56664
Fixes #27951 for WeakMap.
Fixes #23551 which regressed as a result of #28052 only changing the Iterable‑taking constructor overload.

tsc

Comparison Report - baseline..pr

_Metric	_baseline	_pr	_Delta	_Best	_Worst	_p-value
_{Compiler-Unions - node (v18.15.0, x64)}
_Errors	₃	₃	_~	_~	_~	_{p=1.000 n=6}
_Symbols	_82,521	_82,521	_~	_~	_~	_{p=1.000 n=6}
_Types	_125,280	_125,280	_~	_~	_~	_{p=1.000 n=6}
_{Memory used}	_{277,173k (± 0.52%)}	_{277,223k (± 0.53%)}	_~	_274,231k	_277,985k	_{p=0.230 n=6}
_{Parse Time}	_{1.60s (± 1.14%)}	_{1.60s (± 1.23%)}	_~	_1.57s	_1.63s	_{p=0.739 n=6}
_{Bind Time}	_{0.90s (± 1.30%)}	_{0.90s (± 1.63%)}	_~	_0.88s	_0.92s	_{p=1.000 n=6}
_{Check Time}	_{17.51s (± 1.87%)}	_{17.50s (± 1.99%)}	_~	_16.81s	_17.77s	_{p=1.000 n=6}
_{Emit Time}	_{3.24s (± 1.30%)}	_{3.26s (± 0.60%)}	_~	_3.24s	_3.29s	_{p=0.332 n=6}
_{Total Time}	_{23.25s (± 1.52%)}	_{23.26s (± 1.51%)}	_~	_22.57s	_23.52s	_{p=1.000 n=6}
_{angular-1 - node (v18.15.0, x64)}
_Errors	₃	₃	_~	_~	_~	_{p=1.000 n=6}
_Symbols	_955,840	_955,840	_~	_~	_~	_{p=1.000 n=6}
_Types	_415,853	_415,851	_{-2 (- 0.00%)}	_~	_~	_{p=0.001 n=6}
_{Memory used}	_{1,255,054k (± 0.00%)}	_{1,255,054k (± 0.01%)}	_~	_1,254,946k	_1,255,109k	_{p=0.810 n=6}
_{Parse Time}	_{7.99s (± 0.52%)}	_{7.94s (± 0.42%)}	_~	_7.89s	_7.98s	_{p=0.053 n=6}
_{Bind Time}	_{2.38s (± 0.75%)}	_{2.39s (± 0.64%)}	_~	_2.36s	_2.40s	_{p=0.683 n=6}
_{Check Time}	_{38.75s (± 0.34%)}	_{38.87s (± 0.37%)}	_~	_38.63s	_39.02s	_{p=0.090 n=6}
_{Emit Time}	_{17.96s (± 0.28%)}	_{18.02s (± 0.68%)}	_~	_17.82s	_18.16s	_{p=0.228 n=6}
_{Total Time}	_{67.07s (± 0.21%)}	_{67.23s (± 0.34%)}	_~	_66.86s	_67.48s	_{p=0.261 n=6}
_{mui-docs - node (v18.15.0, x64)}
_Errors	_11,439	_11,439	_~	_~	_~	_{p=1.000 n=6}
_Symbols	_2,703,113	_2,703,113	_~	_~	_~	_{p=1.000 n=6}
_Types	_931,060	_931,058	_{-2 (- 0.00%)}	_~	_~	_{p=0.001 n=6}
_{Memory used}	_{3,039,352k (± 0.00%)}	_{3,039,355k (± 0.00%)}	_~	_3,039,238k	_3,039,420k	_{p=0.936 n=6}
_{Parse Time}	_{12.65s (± 1.02%)}	_{12.70s (± 0.41%)}	_~	_12.62s	_12.78s	_{p=0.936 n=6}
_{Bind Time}	_{3.41s (± 0.88%)}	_{3.41s (± 0.91%)}	_~	_3.37s	_3.46s	_{p=0.871 n=6}
_{Check Time}	_{135.83s (± 0.95%)}	_{136.16s (± 1.52%)}	_~	_134.00s	_139.53s	_{p=0.936 n=6}
_{Emit Time}	_{0.46s (± 3.25%)}	_{0.47s (± 2.10%)}	_~	_0.45s	_0.48s	_{p=0.357 n=6}
_{Total Time}	_{152.36s (± 0.83%)}	_{152.75s (± 1.35%)}	_~	_150.56s	_156.09s	_{p=0.810 n=6}
_{self-build-src - node (v18.15.0, x64)}
_Errors	₀	₀	_~	_~	_~	_{p=1.000 n=6}
_Symbols	_1,253,400	_1,253,400	_~	_~	_~	_{p=1.000 n=6}
_Types	_260,196	_260,194	_{-2 (- 0.00%)}	_~	_~	_{p=0.001 n=6}
_{Memory used}	_{3,008,696k (± 9.92%)}	_{3,130,243k (± 0.03%)}	_~	_3,128,615k	_3,131,581k	_{p=0.936 n=6}
_{Parse Time}	_{6.67s (± 1.84%)}	_{6.71s (± 0.76%)}	_~	_6.62s	_6.78s	_{p=0.810 n=6}
_{Bind Time}	_{2.21s (± 1.58%)}	_{2.22s (± 0.68%)}	_~	_2.20s	_2.24s	_{p=0.936 n=6}
_{Check Time}	_{43.22s (± 0.32%)}	_{43.21s (± 0.46%)}	_~	_42.95s	_43.49s	_{p=1.000 n=6}
_{Emit Time}	_{3.47s (± 3.44%)}	_{3.51s (± 1.64%)}	_~	_3.42s	_3.58s	_{p=0.810 n=6}
_{Total Time}	_{55.58s (± 0.28%)}	_{55.64s (± 0.37%)}	_~	_55.35s	_55.92s	_{p=0.689 n=6}
_{self-build-src-public-api - node (v18.15.0, x64)}
_Errors	₀	₀	_~	_~	_~	_{p=1.000 n=6}
_Symbols	_1,253,400	_1,253,400	_~	_~	_~	_{p=1.000 n=6}
_Types	_260,196	_260,194	_{-2 (- 0.00%)}	_~	_~	_{p=0.001 n=6}
_{Memory used}	_{3,194,656k (± 0.02%)}	_{3,193,786k (± 0.02%)}	_~	_3,193,298k	_3,194,584k	_{p=0.066 n=6}
_{Parse Time}	_{6.88s (± 0.73%)}	_{6.88s (± 1.14%)}	_~	_6.76s	_6.99s	_{p=1.000 n=6}
_{Bind Time}	_{2.27s (± 1.45%)}	_{2.25s (± 0.73%)}	_~	_2.22s	_2.27s	_{p=0.170 n=6}
_{Check Time}	_{43.43s (± 0.12%)}	_{43.39s (± 0.40%)}	_~	_43.17s	_43.66s	_{p=0.689 n=6}
_{Emit Time}	_{3.47s (± 3.73%)}	_{3.52s (± 2.27%)}	_~	_3.39s	_3.64s	_{p=0.470 n=6}
_{Total Time}	_{56.05s (± 0.26%)}	_{56.03s (± 0.30%)}	_~	_55.86s	_56.31s	_{p=0.689 n=6}
_{self-compiler - node (v18.15.0, x64)}
_Errors	₀	₀	_~	_~	_~	_{p=1.000 n=6}
_Symbols	_265,166	_265,166	_~	_~	_~	_{p=1.000 n=6}
_Types	_104,270	_104,268	_{-2 (- 0.00%)}	_~	_~	_{p=0.001 n=6}
_{Memory used}	_{444,537k (± 0.02%)}	_{444,561k (± 0.01%)}	_~	_444,476k	_444,627k	_{p=0.575 n=6}
_{Parse Time}	_{3.53s (± 0.77%)}	_{3.52s (± 0.66%)}	_~	_3.49s	_3.56s	_{p=0.366 n=6}
_{Bind Time}	_{1.37s (± 0.55%)}	_{1.37s (± 0.75%)}	_~	_1.36s	_1.39s	_{p=0.437 n=6}
_{Check Time}	_{19.30s (± 0.46%)}	_{19.32s (± 0.29%)}	_~	_19.25s	_19.40s	_{p=0.872 n=6}
_{Emit Time}	_{1.55s (± 1.32%)}	_{1.54s (± 1.12%)}	_~	_1.52s	_1.57s	_{p=0.326 n=6}
_{Total Time}	_{25.75s (± 0.37%)}	_{25.75s (± 0.25%)}	_~	_25.66s	_25.84s	_{p=0.936 n=6}
_{ts-pre-modules - node (v18.15.0, x64)}
_Errors	₂₇₁	₂₇₁	_~	_~	_~	_{p=1.000 n=6}
_Symbols	_225,135	_225,162	_{+27 (+ 0.01%)}	_~	_~	_{p=0.001 n=6}
_Types	_93,554	_93,564	_{+10 (+ 0.01%)}	_~	_~	_{p=0.001 n=6}
_{Memory used}	_{370,625k (± 0.03%)}	_{370,613k (± 0.01%)}	_~	_370,551k	_370,669k	_{p=0.936 n=6}
_{Parse Time}	_{2.82s (± 1.58%)}	_{2.83s (± 1.04%)}	_~	_2.80s	_2.88s	_{p=0.169 n=6}
_{Bind Time}	_{1.64s (± 0.90%)}	_{1.63s (± 0.74%)}	_~	_1.62s	_1.65s	_{p=0.325 n=6}
_{Check Time}	_{17.44s (± 0.28%)}	_{17.43s (± 0.41%)}	_~	_17.31s	_17.50s	_{p=1.000 n=6}
_{Emit Time}	_0.00s	_0.00s	_~	_~	_~	_{p=1.000 n=6}
_{Total Time}	_{21.91s (± 0.33%)}	_{21.90s (± 0.44%)}	_~	_21.76s	_22.01s	_{p=1.000 n=6}
_{vscode - node (v18.15.0, x64)}
_Errors	₁₁	₁₁	_~	_~	_~	_{p=1.000 n=6}
_Symbols	_4,226,927	_4,226,927	_~	_~	_~	_{p=1.000 n=6}
_Types	_1,342,245	_1,342,247	_{+2 (+ 0.00%)}	_~	_~	_{p=0.001 n=6}
_{Memory used}	_{4,019,894k (± 0.00%)}	_{4,019,962k (± 0.00%)}	_~	_4,019,764k	_4,020,183k	_{p=0.423 n=6}
_{Parse Time}	_{16.24s (± 0.49%)}	_{16.22s (± 0.34%)}	_~	_16.13s	_16.29s	_{p=0.810 n=6}
_{Bind Time}	_{5.78s (±12.98%)}	_{5.49s (± 0.41%)}	_~	_5.46s	_5.53s	_{p=0.936 n=6}
_{Check Time}	_{121.25s (± 3.76%)}	_{124.14s (± 3.75%)}	_~	_120.96s	_133.14s	_{p=0.298 n=6}
_{Emit Time}	_{49.95s (±10.48%)}	_{48.61s (± 9.67%)}	_~	_45.32s	_57.08s	_{p=0.689 n=6}
_{Total Time}	_{193.23s (± 3.08%)}	_{194.47s (± 3.01%)}	_~	_188.42s	_202.68s	_{p=0.936 n=6}
_{webpack - node (v18.15.0, x64)}
_Errors	₄₁	₄₁	_~	_~	_~	_{p=1.000 n=6}
_Symbols	_402,249	_402,249	_~	_~	_~	_{p=1.000 n=6}
_Types	_178,120	_178,122	_{+2 (+ 0.00%)}	_~	_~	_{p=0.001 n=6}
_{Memory used}	_{559,168k (± 0.03%)}	_{559,224k (± 0.04%)}	_~	_559,001k	_559,660k	_{p=0.471 n=6}
_{Parse Time}	_{4.75s (± 0.67%)}	_{4.73s (± 0.13%)}	_~	_4.72s	_4.74s	_{p=0.158 n=6}
_{Bind Time}	_{2.02s (± 0.67%)}	_{2.02s (± 1.21%)}	_~	_1.99s	_2.06s	_{p=0.932 n=6}
_{Check Time}	_{24.48s (± 0.45%)}	_{24.41s (± 1.16%)}	_~	_23.94s	_24.75s	_{p=0.688 n=6}
_{Emit Time}	_{0.00s (±244.70%)}	_{0.01s (±77.38%)}	_~	_0.00s	_0.01s	_{p=0.112 n=6}
_{Total Time}	_{31.26s (± 0.43%)}	_{31.17s (± 0.92%)}	_~	_30.67s	_31.51s	_{p=0.748 n=6}
_{xstate-main - node (v18.15.0, x64)}
_Errors	₃₀	₃₀	_~	_~	_~	_{p=1.000 n=6}
_Symbols	_752,037	_752,037	_~	_~	_~	_{p=1.000 n=6}
_Types	_215,078	_215,076	_{-2 (- 0.00%)}	_~	_~	_{p=0.001 n=6}
_{Memory used}	_{675,357k (± 0.00%)}	_{675,398k (± 0.02%)}	_~	_675,242k	_675,566k	_{p=0.521 n=6}
_{Parse Time}	_{4.88s (± 0.42%)}	_{4.90s (± 0.42%)}	_~	_4.87s	_4.92s	_{p=0.517 n=6}
_{Bind Time}	_{1.57s (± 0.62%)}	_{1.58s (± 1.18%)}	_~	_1.55s	_1.60s	_{p=0.558 n=6}
_{Check Time}	_{22.26s (± 0.20%)}	_{22.34s (± 0.55%)}	_~	_22.17s	_22.53s	_{p=0.170 n=6}
_{Emit Time}	_0.00s	_0.00s	_~	_~	_~	_{p=1.000 n=6}
_{Total Time}	_{28.71s (± 0.20%)}	_{28.82s (± 0.45%)}	_~	_28.63s	_29.03s	_{p=0.054 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 · 2026-02-06T23:19:10Z

@jakebailey Here are the results of running the top 400 repos with tsc comparing main and refs/pull/56713/merge:

Everything looks good!

DanielRosenwasser

Don't love that there's more any, but most people were probably hitting the other overload anyway.

Un‑consolidate and fix WeakMap constructor overloads

ed75be4

typescript-bot added the For Uncommitted Bug PR for untriaged, rejected, closed or missing bug label Dec 8, 2023

This was referenced Dec 8, 2023

Un-consolidate overloads for Map and WeakMap #28052

Merged

Can't extend WeakMap in type-checked JS files #56664

Closed

typescript-bot added For Backlog Bug PRs that fix a backlog bug and removed For Uncommitted Bug PR for untriaged, rejected, closed or missing bug labels Dec 8, 2023

typescript-bot assigned sandersn Dec 8, 2023

typescript-bot added the For Milestone Bug PRs that fix a bug with a specific milestone label Dec 8, 2023

Andarist reviewed Dec 8, 2023

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src/lib/es2015.iterable.d.ts Show resolved Hide resolved

sandersn requested review from rbuckton and sandersn January 4, 2024 22:43

sandersn previously requested changes Jan 4, 2024

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tests/cases/compiler/extendingCollectionsWithCheckJs.ts Show resolved Hide resolved

tests/cases/compiler/newMap.ts Show resolved Hide resolved

ExE-Boss requested a review from sandersn January 5, 2024 18:43

jakebailey added 2 commits February 6, 2026 13:51

Merge branch 'main' into pr-56713

5740829

update baselines

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jakebailey removed the request for review from rbuckton February 6, 2026 22:00

DanielRosenwasser approved these changes Feb 7, 2026

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github-project-automation bot moved this from Waiting on author to Needs merge in PR Backlog Feb 7, 2026

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Merged via the queue into microsoft:main with commit e872a6e Feb 7, 2026
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Un‑consolidate and fix `WeakMap` constructor overloads #56713

Un‑consolidate and fix `WeakMap` constructor overloads #56713

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Un‑consolidate and fix WeakMap constructor overloads #56713

Un‑consolidate and fix WeakMap constructor overloads #56713

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Un‑consolidate and fix `WeakMap` constructor overloads #56713

Un‑consolidate and fix `WeakMap` constructor overloads #56713

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