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fix: private field in class expression emits invalid dts#61590

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Jack-Works wants to merge 2 commits intomicrosoft:mainfrom
Jack-Works:private-field-dts-check
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fix: private field in class expression emits invalid dts#61590
Jack-Works wants to merge 2 commits intomicrosoft:mainfrom
Jack-Works:private-field-dts-check

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@Jack-Works Jack-Works commented Apr 17, 2025 •
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@github-project-automation github-project-automation Bot moved this to Not started in PR Backlog Apr 17, 2025
@typescript-bot typescript-bot added the For Uncommitted Bug PR for untriaged, rejected, closed or missing bug label Apr 17, 2025
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typescript-bot commented Apr 17, 2025

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

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gabritto commented Apr 17, 2025

@typescript-bot test it

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typescript-bot commented Apr 17, 2025 •
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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

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typescript-bot commented Apr 17, 2025

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

Everything looks the same!

You can check the log here.

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typescript-bot commented Apr 17, 2025

@gabritto Here are the results of running the user tests with tsc comparing main and refs/pull/61590/merge:

There were infrastructure failures potentially unrelated to your change:

  • 1 instance of "Timeout"

Otherwise...

Something interesting changed - please have a look.

Details

puppeteer

tsconfig.base.json

packages/puppeteer-core/tsconfig.json

packages/puppeteer/tsconfig.json

  • [NEW] error TS7006: Parameter 'mutex' implicitly has an 'any' type.
  • [NEW] error TS7006: Parameter 'onRelease' implicitly has an 'any' type.
  • [NEW] error TS7008: Member '#acquirers' implicitly has an 'any[]' type.
  • [NEW] error TS2339: Property '__createBinding' does not exist on type 'typeof import("/mnt/ts_downloads/_/m/puppeteer/packages/puppeteer-core/lib/cjs/puppeteer/injected/injected")'.
  • [NEW] error TS2774: This condition will always return true since this function is always defined. Did you mean to call it instead?
  • [NEW] error TS7006: Parameter 'o' implicitly has an 'any' type.
  • [NEW] error TS7006: Parameter 'm' implicitly has an 'any' type.
  • [NEW] error TS7006: Parameter 'k' implicitly has an 'any' type.
  • [NEW] error TS7006: Parameter 'k2' implicitly has an 'any' type.
  • [NEW] error TS2339: Property '__setModuleDefault' does not exist on type 'typeof import("/mnt/ts_downloads/_/m/puppeteer/packages/puppeteer-core/lib/cjs/puppeteer/injected/injected")'.
  • [NEW] error TS7006: Parameter 'v' implicitly has an 'any' type.
  • [NEW] error TS2339: Property '__importStar' does not exist on type 'typeof import("/mnt/ts_downloads/_/m/puppeteer/packages/puppeteer-core/lib/cjs/puppeteer/injected/injected")'.
  • [NEW] error TS7023: 'ownKeys' implicitly has return type 'any' because it does not have a return type annotation and is referenced directly or indirectly in one of its return expressions.
  • [NEW] error TS7006: Parameter 'mod' implicitly has an 'any' type.
  • [NEW] error TS2322: Type 'undefined' is not assignable to type 'typeof Mutex'.

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typescript-bot commented Apr 17, 2025

@gabritto
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 34 34 ~ ~ ~ p=1.000 n=6
Symbols 62,390 62,390 ~ ~ ~ p=1.000 n=6
Types 50,395 50,395 ~ ~ ~ p=1.000 n=6
Memory used 193,543k (± 0.76%) 194,818k (± 0.98%) +1,276k (+ 0.66%) 192,953k 196,619k p=0.045 n=6
Parse Time 1.31s (± 0.39%) 1.31s (± 0.48%) ~ 1.30s 1.32s p=0.386 n=6
Bind Time 0.73s 0.73s ~ ~ ~ p=1.000 n=6
Check Time 9.74s (± 0.43%) 9.74s (± 0.42%) ~ 9.69s 9.81s p=0.936 n=6
Emit Time 2.73s (± 0.65%) 2.73s (± 0.64%) ~ 2.72s 2.76s p=1.000 n=6
Total Time 14.51s (± 0.33%) 14.51s (± 0.31%) ~ 14.45s 14.58s p=0.936 n=6
angular-1 - node (v18.15.0, x64)
Errors 56 56 ~ ~ ~ p=1.000 n=6
Symbols 948,670 948,670 ~ ~ ~ p=1.000 n=6
Types 410,947 410,947 ~ ~ ~ p=1.000 n=6
Memory used 1,224,334k (± 0.00%) 1,224,359k (± 0.00%) ~ 1,224,304k 1,224,433k p=0.297 n=6
Parse Time 6.66s (± 0.43%) 6.64s (± 1.04%) ~ 6.53s 6.71s p=0.936 n=6
Bind Time 1.88s (± 0.44%) 1.89s (± 0.27%) ~ 1.89s 1.90s p=0.073 n=6
Check Time 31.95s (± 0.25%) 31.93s (± 0.27%) ~ 31.84s 32.07s p=0.630 n=6
Emit Time 15.26s (± 0.35%) 15.27s (± 0.75%) ~ 15.10s 15.43s p=0.936 n=6
Total Time 55.76s (± 0.12%) 55.73s (± 0.34%) ~ 55.41s 55.94s p=0.872 n=6
mui-docs - node (v18.15.0, x64)
Errors 0 0 ~ ~ ~ p=1.000 n=6
Symbols 2,360,049 2,360,049 ~ ~ ~ p=1.000 n=6
Types 868,091 868,091 ~ ~ ~ p=1.000 n=6
Memory used 2,314,013k (± 0.00%) 2,314,053k (± 0.00%) ~ 2,314,004k 2,314,118k p=0.226 n=6
Parse Time 8.73s (± 0.19%) 8.75s (± 0.22%) ~ 8.73s 8.77s p=0.102 n=6
Bind Time 2.21s (± 1.28%) 2.20s (± 0.68%) ~ 2.19s 2.23s p=0.871 n=6
Check Time 69.82s (± 0.64%) 69.63s (± 0.53%) ~ 69.17s 70.12s p=0.471 n=6
Emit Time 0.31s (± 1.32%) 0.30s (± 3.29%) ~ 0.29s 0.31s p=0.071 n=6
Total Time 81.07s (± 0.55%) 80.88s (± 0.45%) ~ 80.43s 81.39s p=0.575 n=6
self-build-src - node (v18.15.0, x64)
Errors 0 0 ~ ~ ~ p=1.000 n=6
Symbols 1,228,025 1,228,025 ~ ~ ~ p=1.000 n=6
Types 267,258 267,257 -1 (- 0.00%) ~ ~ p=0.001 n=6
Memory used 2,360,321k (± 0.02%) 2,360,664k (± 0.01%) ~ 2,360,256k 2,361,172k p=0.378 n=6
Parse Time 5.24s (± 0.96%) 5.18s (± 0.58%) -0.06s (- 1.21%) 5.15s 5.23s p=0.030 n=6
Bind Time 1.80s (± 0.82%) 1.81s (± 0.97%) ~ 1.78s 1.83s p=0.625 n=6
Check Time 35.35s (± 0.17%) 35.37s (± 0.58%) ~ 35.16s 35.71s p=0.521 n=6
Emit Time 3.08s (± 2.87%) 3.00s (± 0.94%) -0.09s (- 2.81%) 2.95s 3.03s p=0.024 n=6
Total Time 45.48s (± 0.27%) 45.34s (± 0.41%) ~ 45.21s 45.66s p=0.199 n=6
self-build-src-public-api - node (v18.15.0, x64)
Errors 0 0 ~ ~ ~ p=1.000 n=6
Symbols 1,228,025 1,228,025 ~ ~ ~ p=1.000 n=6
Types 267,258 267,257 -1 (- 0.00%) ~ ~ p=0.001 n=6
Memory used 2,916,344k (±12.88%) 3,159,204k (± 0.02%) ~ 3,158,651k 3,160,071k p=0.298 n=6
Parse Time 6.94s (± 1.81%) 6.97s (± 0.61%) ~ 6.91s 7.03s p=0.936 n=6
Bind Time 2.17s (± 1.07%) 2.16s (± 2.05%) ~ 2.10s 2.22s p=0.688 n=6
Check Time 42.91s (± 0.45%) 42.93s (± 0.14%) ~ 42.84s 43.00s p=0.936 n=6
Emit Time 3.56s (± 2.46%) 3.50s (± 2.25%) ~ 3.40s 3.59s p=0.261 n=6
Total Time 55.56s (± 0.52%) 55.56s (± 0.19%) ~ 55.36s 55.65s p=0.521 n=6
self-compiler - node (v18.15.0, x64)
Errors 0 0 ~ ~ ~ p=1.000 n=6
Symbols 263,403 263,403 ~ ~ ~ p=1.000 n=6
Types 107,094 107,093 -1 (- 0.00%) ~ ~ p=0.001 n=6
Memory used 441,723k (± 0.01%) 441,721k (± 0.02%) ~ 441,612k 441,827k p=0.936 n=6
Parse Time 3.57s (± 1.17%) 3.53s (± 1.21%) ~ 3.48s 3.60s p=0.108 n=6
Bind Time 1.32s (± 0.91%) 1.32s (± 0.39%) ~ 1.31s 1.32s p=0.351 n=6
Check Time 19.02s (± 0.32%) 19.00s (± 0.30%) ~ 18.94s 19.10s p=0.630 n=6
Emit Time 1.53s (± 0.68%) 1.54s (± 0.86%) ~ 1.52s 1.56s p=0.358 n=6
Total Time 25.45s (± 0.22%) 25.38s (± 0.32%) ~ 25.26s 25.51s p=0.173 n=6
ts-pre-modules - node (v18.15.0, x64)
Errors 71 71 ~ ~ ~ p=1.000 n=6
Symbols 225,981 225,981 ~ ~ ~ p=1.000 n=6
Types 94,356 94,356 ~ ~ ~ p=1.000 n=6
Memory used 371,288k (± 0.02%) 371,281k (± 0.01%) ~ 371,218k 371,339k p=0.936 n=6
Parse Time 2.92s (± 1.03%) 2.89s (± 0.69%) ~ 2.86s 2.92s p=0.169 n=6
Bind Time 1.59s (± 0.95%) 1.60s (± 0.79%) ~ 1.59s 1.62s p=0.121 n=6
Check Time 16.50s (± 0.43%) 16.43s (± 0.20%) ~ 16.39s 16.48s p=0.109 n=6
Emit Time 0.00s 0.00s ~ ~ ~ p=1.000 n=6
Total Time 21.00s (± 0.42%) 20.93s (± 0.13%) ~ 20.89s 20.96s p=0.142 n=6
vscode - node (v18.15.0, x64)
Errors 4 4 ~ ~ ~ p=1.000 n=6
Symbols 3,362,299 3,362,299 ~ ~ ~ p=1.000 n=6
Types 1,139,312 1,139,312 ~ ~ ~ p=1.000 n=6
Memory used 3,420,333k (± 0.01%) 3,420,223k (± 0.01%) ~ 3,419,561k 3,420,511k p=0.298 n=6
Parse Time 18.04s (± 0.55%) 17.95s (± 0.28%) ~ 17.89s 18.03s p=0.128 n=6
Bind Time 6.11s (±13.65%) 6.02s (±13.30%) -0.09s (- 1.53%) 5.67s 7.65s p=0.045 n=6
Check Time 111.74s (± 1.29%) 112.56s (± 3.39%) ~ 109.82s 119.90s p=0.689 n=6
Emit Time 35.29s (± 6.99%) 35.22s (± 6.93%) ~ 30.30s 37.01s p=0.810 n=6
Total Time 171.18s (± 1.32%) 171.75s (± 1.52%) ~ 169.57s 176.06s p=0.936 n=6
webpack - node (v18.15.0, x64)
Errors 2 2 ~ ~ ~ p=1.000 n=6
Symbols 316,035 316,035 ~ ~ ~ p=1.000 n=6
Types 140,050 140,050 ~ ~ ~ p=1.000 n=6
Memory used 470,811k (± 0.02%) 470,798k (± 0.02%) ~ 470,663k 470,874k p=0.936 n=6
Parse Time 5.18s (± 0.38%) 5.16s (± 0.61%) ~ 5.10s 5.19s p=0.373 n=6
Bind Time 2.27s (± 1.07%) 2.25s (± 1.08%) ~ 2.22s 2.28s p=0.226 n=6
Check Time 25.88s (± 0.28%) 25.83s (± 0.40%) ~ 25.67s 25.96s p=0.747 n=6
Emit Time 0.00s 0.01s (±109.43%) ~ 0.00s 0.01s p=0.071 n=6
Total Time 33.32s (± 0.24%) 33.24s (± 0.34%) ~ 33.07s 33.34s p=0.226 n=6
xstate-main - node (v18.15.0, x64)
Errors 5 5 ~ ~ ~ p=1.000 n=6
Symbols 568,548 568,548 ~ ~ ~ p=1.000 n=6
Types 190,459 190,459 ~ ~ ~ p=1.000 n=6
Memory used 498,531k (± 0.01%) 498,553k (± 0.01%) ~ 498,498k 498,648k p=0.378 n=6
Parse Time 3.35s (± 0.70%) 3.37s (± 0.66%) ~ 3.35s 3.41s p=0.569 n=6
Bind Time 1.20s (± 0.87%) 1.20s (± 0.91%) ~ 1.18s 1.21s p=0.554 n=6
Check Time 19.95s (± 0.28%) 20.04s (± 0.47%) ~ 19.94s 20.19s p=0.125 n=6
Emit Time 0.00s 0.00s ~ ~ ~ p=1.000 n=6
Total Time 24.51s (± 0.30%) 24.61s (± 0.38%) ~ 24.51s 24.78s p=0.091 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

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typescript-bot commented Apr 17, 2025

@gabritto Here are the results of running the top 400 repos with tsc comparing main and refs/pull/61590/merge:

Something interesting changed - please have a look.

Details

sequelize/sequelize

14 of 16 projects failed to build with the old tsc and were ignored

packages/core/tsconfig.json

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MartinJohns commented Apr 18, 2025

Related: #36548 / #57523

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typescript-bot commented Mar 24, 2026

With 6.0 out as the final release vehicle for this codebase, we're closing all PRs that don't fit the merge criteria for post-6.0 patches. If you think this was a mistake and this PR fits the post-6.0 patch criteria, please post to the 6.0 iteration issue with details (specifically, which PR and which patch criteria it satisfies).

Next steps for PRs:

  • For crash bugfixes or language service improvements, PRs are currently accepted at the typescript-go repo
  • Changes to type system behavior should wait until after 7.0, at which point mainline TypeScript development will resume in this repository with the Go codebase
  • Library file updates (lib.d.ts etc) continue to live in this repo or the DOM Generator repo as appropriate

@github-project-automation github-project-automation Bot moved this from Not started to Done in PR Backlog Mar 24, 2026
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Declaration emit for private identifiers in class expressions is wrong

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@Jack-Works @typescript-bot @gabritto @MartinJohns @RyanCavanaugh