fix(51521): Using a of property declared after an initializing constructor triggers an assertion failure in JS #51524

a-tarasyuk · 2022-11-14T20:20:26Z

src/compiler/checker.ts

jakebailey

Given this change is now restricted to the binder, should the changes to the checker be reverted?

FWIW I sent a fix for this that was completely different and probably worse (#52321), thinking #39704 was the issue for this.

src/compiler/checker.ts

DanielRosenwasser · 2023-01-20T06:32:31Z

@typescript-bot pack this

I feel odd about this change - not binding feels like the wrong thing. The attempt to do JS inference in the first place is the wrong thing.

typescript-bot · 2023-01-20T06:32:34Z

Heya @DanielRosenwasser, I've started to run the tarball bundle task on this PR at 9dc7b92. You can monitor the build here.

typescript-bot · 2023-01-20T06:34:23Z

Hey @DanielRosenwasser, I've packed this into an installable tgz. You can install it for testing by referencing it in your package.json like so:

{
    "devDependencies": {
        "typescript": "https://typescript.visualstudio.com/cf7ac146-d525-443c-b23c-0d58337efebc/_apis/build/builds/143279/artifacts?artifactName=tgz&fileId=B54BE1A540768A22EEBAE0C1294C666A8C3117398A1057802D384A6FC74A1D6302&fileName=/typescript-5.0.0-insiders.20230120.tgz"
    }
}

and then running npm install.

There is also a playground for this build and an npm module you can use via "typescript": "npm:@typescript-deploys/[email protected]".;

DanielRosenwasser · 2023-01-20T06:46:23Z

In fact, I think this causes other issues. If you open the built playground, switch to a JS file, paste in the code, and request diagnostics, you will get the following stack trace.

Uncaught (in promise) TypeError: Cannot read properties of undefined (reading 'flags')
    at checkVariableLikeDeclaration (tsWorker.js:68839:20)
    at checkPropertyDeclaration (tsWorker.js:67050:9)
    at checkSourceElementWorker (tsWorker.js:71357:20)
    at checkSourceElement (tsWorker.js:71322:11)
    at forEach (tsWorker.js:91:26)
    at checkClassDeclaration (tsWorker.js:70040:9)
    at checkSourceElementWorker (tsWorker.js:71495:20)
    at checkSourceElement (tsWorker.js:71322:11)
    at forEach (tsWorker.js:91:26)
    at checkSourceFileWorker (tsWorker.js:71680:11)

Fuller Stack

checkVariableLikeDeclaration (tsWorker.js:68839)
checkPropertyDeclaration (tsWorker.js:67050)
checkSourceElementWorker (tsWorker.js:71357)
checkSourceElement (tsWorker.js:71322)
forEach (tsWorker.js:91)
checkClassDeclaration (tsWorker.js:70040)
checkSourceElementWorker (tsWorker.js:71495)
checkSourceElement (tsWorker.js:71322)
forEach (tsWorker.js:91)
checkSourceFileWorker (tsWorker.js:71680)
checkSourceFile (tsWorker.js:71647)
checkSourceFileWithEagerDiagnostics (tsWorker.js:71741)
getDiagnosticsWorker (tsWorker.js:71749)
getDiagnostics2 (tsWorker.js:71726)
(anonymous) (tsWorker.js:97890)
runWithCancellationToken (tsWorker.js:97863)
getBindAndCheckDiagnosticsForFileNoCache (tsWorker.js:97878)
getAndCacheDiagnostics (tsWorker.js:98153)
getBindAndCheckDiagnosticsForFile (tsWorker.js:97875)
getSemanticDiagnosticsForFile (tsWorker.js:97872)
getDiagnosticsHelper (tsWorker.js:97811)
getSemanticDiagnostics (tsWorker.js:97824)
getSemanticDiagnostics (tsWorker.js:112356)
getSemanticDiagnostics (tsWorker.js:171771)

Can you make your test request errors as well?

jakebailey · 2023-01-20T06:59:01Z

Hmm, maybe #52321 is better if not binding is not preferable? (Tomorrow I'll grab this test and see)

DanielRosenwasser · 2023-01-20T07:02:57Z

A playground should be ready shortly to try out. If you get to this before Jake does, feel free to cherry-pick the commit.

Old

… crashes in checker

jakebailey

Rechecked this against the tsreplay for the babel example and it does pass. This fix seems to be the best one?

a-tarasyuk · 2023-01-20T19:32:15Z

@jakebailey What is tsreplay?

jakebailey · 2023-01-20T20:21:47Z

@jakebailey What is tsreplay?

See the expando here, for example: #52317 (comment)

DanielRosenwasser · 2023-01-20T20:54:50Z

@typescript-bot perf test this faster

typescript-bot · 2023-01-20T20:54:53Z

Heya @DanielRosenwasser, I've started to run the abridged perf test suite on this PR at 7cd7628. You can monitor the build here.

Update: The results are in!

DanielRosenwasser · 2023-01-20T20:55:36Z

@typescript-bot user test tsserver
@typescript-bot test tsserver top100

typescript-bot · 2023-01-20T20:55:38Z

Heya @DanielRosenwasser, I've started to run the diff-based top-repos suite (tsserver) on this PR at 7cd7628. You can monitor the build here.

Update: The results are in!

typescript-bot · 2023-01-20T20:55:38Z

Heya @DanielRosenwasser, I've started to run the diff-based user code test suite (tsserver) on this PR at 7cd7628. You can monitor the build here.

Update: The results are in!

DanielRosenwasser

Approved pending reasonable perf and test results.

typescript-bot · 2023-01-20T21:05:49Z

@DanielRosenwasser Here are the results of running the user test suite comparing main and refs/pull/51524/merge:

Everything looks good!

typescript-bot · 2023-01-20T21:21:42Z

@DanielRosenwasser
The results of the perf run you requested are in!

Here they are:

Comparison Report - main..51524

_Metric	_main	₅₁₅₂₄	_Delta	_Best	_Worst
_{Angular - node (v16.17.1, x64)}
_{Memory used}	_{358,182k (± 0.01%)}	_{358,230k (± 0.01%)}	_{+48k (+ 0.01%)}	_358,178k	_358,297k
_{Parse Time}	_{4.12s (± 0.42%)}	_{4.11s (± 0.40%)}	_{-0.00s (- 0.11%)}	_4.09s	_4.13s
_{Bind Time}	_{1.24s (± 1.06%)}	_{1.24s (± 0.64%)}	_{-0.00s (- 0.07%)}	_1.23s	_1.25s
_{Check Time}	_{9.50s (± 0.41%)}	_{9.49s (± 0.37%)}	_{-0.01s (- 0.15%)}	_9.44s	_9.53s
_{Emit Time}	_{8.07s (± 0.56%)}	_{8.05s (± 0.35%)}	_{-0.02s (- 0.23%)}	_8.01s	_8.08s
_{Total Time}	_{22.93s (± 0.40%)}	_{22.89s (± 0.22%)}	_{-0.04s (- 0.15%)}	_22.82s	_22.95s
_{Compiler-Unions - node (v16.17.1, x64)}
_{Memory used}	_{194,893k (± 0.72%)}	_{194,263k (± 0.10%)}	_{-630k (- 0.32%)}	_193,971k	_194,445k
_{Parse Time}	_{1.80s (± 0.21%)}	_{1.80s (± 0.70%)}	_{+0.00s (+ 0.22%)}	_1.79s	_1.82s
_{Bind Time}	_{0.84s (± 1.15%)}	_{0.84s (± 0.65%)}	_{-0.00s (- 0.36%)}	_0.83s	_0.85s
_{Check Time}	_{10.37s (± 0.26%)}	_{10.30s (± 0.80%)}	_{-0.07s (- 0.67%)}	_10.21s	_10.42s
_{Emit Time}	_{3.04s (± 0.98%)}	_{3.16s (± 5.73%)}	_{+0.12s (+ 3.86%)}	_3.01s	_3.42s
_{Total Time}	_{16.06s (± 0.26%)}	_{16.10s (± 1.01%)}	_{+0.04s (+ 0.25%)}	_15.91s	_16.36s
_{Monaco - node (v16.17.1, x64)}
_{Memory used}	_{343,248k (± 0.01%)}	_{343,248k (± 0.01%)}	_{+0k (+ 0.00%)}	_343,212k	_343,269k
_{Parse Time}	_{3.10s (± 1.09%)}	_{3.11s (± 0.77%)}	_{+0.01s (+ 0.33%)}	_3.06s	_3.12s
_{Bind Time}	_{1.09s (± 0.74%)}	_{1.09s (± 0.51%)}	_{-0.00s (- 0.10%)}	_1.09s	_1.10s
_{Check Time}	_{7.89s (± 0.28%)}	_{7.88s (± 0.43%)}	_{-0.01s (- 0.14%)}	_7.83s	_7.93s
_{Emit Time}	_{4.55s (± 0.93%)}	_{4.52s (± 0.36%)}	_{-0.04s (- 0.79%)}	_4.50s	_4.54s
_{Total Time}	_{16.63s (± 0.53%)}	_{16.59s (± 0.26%)}	_{-0.04s (- 0.23%)}	_16.53s	_16.65s
_{TFS - node (v16.17.1, x64)}
_{Memory used}	_{299,667k (± 0.01%)}	_{299,653k (± 0.00%)}	_{-14k (- 0.00%)}	_299,634k	_299,664k
_{Parse Time}	_{2.45s (± 1.11%)}	_{2.42s (± 0.92%)}	_{-0.02s (- 0.89%)}	_2.40s	_2.45s
_{Bind Time}	_{1.27s (± 0.48%)}	_{1.27s (± 0.88%)}	_{+0.00s (+ 0.13%)}	_1.25s	_1.28s
_{Check Time}	_{7.47s (± 0.37%)}	_{7.47s (± 0.28%)}	_{+0.01s (+ 0.11%)}	_7.45s	_7.51s
_{Emit Time}	_{4.23s (± 0.41%)}	_{4.24s (± 0.88%)}	_{+0.01s (+ 0.29%)}	_4.19s	_4.29s
_{Total Time}	_{15.41s (± 0.29%)}	_{15.41s (± 0.42%)}	_{-0.00s (- 0.01%)}	_15.30s	_15.47s
_{material-ui - node (v16.17.1, x64)}
_{Memory used}	_{475,380k (± 0.00%)}	_{475,353k (± 0.01%)}	_{-27k (- 0.01%)}	_475,303k	_475,393k
_{Parse Time}	_{3.62s (± 0.35%)}	_{3.63s (± 0.54%)}	_{+0.01s (+ 0.34%)}	_3.60s	_3.65s
_{Bind Time}	_{1.00s (± 0.74%)}	_{1.00s (± 0.55%)}	_{-0.00s (- 0.13%)}	_1.00s	_1.01s
_{Check Time}	_{17.96s (± 0.37%)}	_{17.96s (± 0.39%)}	_{+0.00s (+ 0.01%)}	_17.90s	_18.09s
_{Emit Time}	_{0.00s (± 0.00%)}	_{0.00s (± 0.00%)}	_{0.00s ( NaN%)}	_0.00s	_0.00s
_{Total Time}	_{22.58s (± 0.31%)}	_{22.59s (± 0.36%)}	_{+0.01s (+ 0.05%)}	_22.53s	_22.74s
_{xstate - node (v16.17.1, x64)}
_{Memory used}	_{544,595k (± 0.03%)}	_{544,527k (± 0.03%)}	_{-68k (- 0.01%)}	_544,373k	_544,730k
_{Parse Time}	_{4.58s (± 0.70%)}	_{4.57s (± 0.35%)}	_{-0.01s (- 0.16%)}	_4.54s	_4.58s
_{Bind Time}	_{1.78s (± 0.23%)}	_{1.78s (± 0.33%)}	_{-0.00s (- 0.05%)}	_1.77s	_1.78s
_{Check Time}	_{2.96s (± 0.52%)}	_{2.94s (± 0.83%)}	_{-0.01s (- 0.48%)}	_2.91s	_2.97s
_{Emit Time}	_{0.09s (± 0.13%)}	_{0.09s (± 0.27%)}	_{+0.00s (+ 0.13%)}	_0.09s	_0.09s
_{Total Time}	_{9.40s (± 0.47%)}	_{9.38s (± 0.22%)}	_{-0.02s (- 0.26%)}	_9.35s	_9.41s

System

_{Machine Name}	_ts-ci-ubuntu
_Platform	_{linux 5.4.0-135-generic}
_Architecture	_x64
_{Available Memory}	_{16 GB}
_{Available Memory}	_{15 GB}
_CPUs	_{4 × Intel(R) Core(TM) i7-4770 CPU @ 3.40GHz}

Hosts

node (v16.17.1, x64)

Scenarios

Angular - node (v16.17.1, x64)
Compiler-Unions - node (v16.17.1, x64)
Monaco - node (v16.17.1, x64)
TFS - node (v16.17.1, x64)
material-ui - node (v16.17.1, x64)
xstate - node (v16.17.1, x64)

_Benchmark	_Name	_Iterations
_Current	₅₁₅₂₄	₆
_Baseline	_main	₆

Developer Information:

Download Benchmark

jakebailey · 2023-01-20T22:43:13Z

Perf looks good; merging.

typescript-bot · 2023-01-20T23:02:35Z

@DanielRosenwasser Here are the results of running the top-repos suite comparing main and refs/pull/51524/merge:

Everything looks good!

typescript-bot assigned navya9singh Nov 14, 2022

typescript-bot added the For Milestone Bug PRs that fix a bug with a specific milestone label Nov 14, 2022

DanielRosenwasser reviewed Nov 14, 2022

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DanielRosenwasser requested a review from sandersn November 14, 2022 20:31

DanielRosenwasser reviewed Nov 14, 2022

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This was referenced Jan 20, 2023

Fix debug assert in getConstructorDefinedThisAssignmentTypes #52321

Closed

TS Server fatal error: Debug Failure. False expression. #39704

Closed

jakebailey previously approved these changes Jan 20, 2023

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jakebailey reviewed Jan 20, 2023

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jakebailey requested a review from sandersn January 20, 2023 05:56

jakebailey mentioned this pull request Jan 20, 2023

Use a const type parameter for Object.freeze. #52317

Closed

a-tarasyuk force-pushed the fix/51521 branch from ccba7d1 to 23681f3 Compare January 20, 2023 14:28

set value declaration for ambient declarations in javascript to avoid…

b7d8b30

… crashes in checker

a-tarasyuk force-pushed the fix/51521 branch from f00bc36 to 7789f54 Compare January 20, 2023 15:27

add tests

7cd7628

a-tarasyuk force-pushed the fix/51521 branch from 7789f54 to 7cd7628 Compare January 20, 2023 15:30

jakebailey approved these changes Jan 20, 2023

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sandersn approved these changes Jan 20, 2023

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DanielRosenwasser approved these changes Jan 20, 2023

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jakebailey merged commit 1d81c1d into microsoft:main Jan 20, 2023

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fix(51521): Using a of property declared after an initializing constructor triggers an assertion failure in JS #51524

fix(51521): Using a of property declared after an initializing constructor triggers an assertion failure in JS #51524

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fix(51521): Using a of property declared after an initializing constructor triggers an assertion failure in JS #51524

fix(51521): Using a of property declared after an initializing constructor triggers an assertion failure in JS #51524

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