TypeError: Cannot read property 'kind' of undefined in 'isPropertyDeclaration' during 'completionInfo'

[typescript-bot]

This issue comes from crash dumps in telemetry. We've tried to de-duplicate issues on a best-effort basis, comparing the sequence of methods called and the command requested while ignoring line numbers.
TypeScript version prefix: 3.8.2
VSCode version: 1.42.1
Command requested: completionInfo
Hitting sessions: 120
Five line hash: 770cb3d3a974358c35063d0bf324f946
Stack:

    at isPropertyDeclaration (tsserver.js:10875:21)
    at isPrivateIdentifierPropertyDeclaration (tsserver.js:11694:16)
    at <anonymous> (tsserver.js:108991:95)
    at stringLiteralCompletionsFromProperties (tsserver.js:108991:59)
    at getStringLiteralCompletionEntries (tsserver.js:108924:36)
    at getStringLiteralCompletions (tsserver.js:108806:35)
    at getCompletionsAtPosition (tsserver.js:109518:67)
    at getCompletionsAtPosition (tsserver.js:135310:35)
    at Session.getCompletions (tsserver.js:145389:64)
    at _a.<computed> (tsserver.js:144337:61)
    at <anonymous> (tsserver.js:145957:88)
    at Session.executeWithRequestId (tsserver.js:145948:28)
    at Session.executeCommand (tsserver.js:145957:33)
    at Session.onMessage (tsserver.js:145981:35)
    at <anonymous> (tsserver.js:147296:27)
    at unknown (suppressed.js)
    at unknown (suppressed.js)
    at unknown (suppressed.js)
    at unknown (suppressed.js)
    at unknown (suppressed.js)
    at unknown (suppressed.js)
    at unknown (suppressed.js)
    at unknown (suppressed.js)
    at unknown (suppressed.js)

[typescript-bot]

This issue reproduced in the following context:
TypeScript version prefix: 3.8.3
VSCode version: 1.43.0-insider
Command requested: completionInfo
Hitting sessions: 934
Five line hash: dec0ecaaf6a08297f17309f82de82304
Stack:

TypeError: Cannot read property 'kind' of undefined
    at isPropertyDeclaration (tsserver.js:10877:21)
    at Object.isPrivateIdentifierPropertyDeclaration (tsserver.js:11696:16)
    at unknown (tsserver.js:109040:95)
    at Array.filter (<anonymous>)
    at stringLiteralCompletionsFromProperties (tsserver.js:109040:59)
    at getStringLiteralCompletionEntries (tsserver.js:108973:36)
    at Object.getStringLiteralCompletions (tsserver.js:108855:35)
    at Object.getCompletionsAtPosition (tsserver.js:109567:67)
    at Proxy.getCompletionsAtPosition (tsserver.js:135360:35)
    at IOSession.Session.getCompletions (tsserver.js:145435:64)
    at Session.handlers.ts.createMapFromTemplate._a.<computed> (tsserver.js:144383:61)
    at unknown (tsserver.js:146003:88)
    at IOSession.Session.executeWithRequestId (tsserver.js:145994:28)
    at IOSession.Session.executeCommand (tsserver.js:146003:33)
    at IOSession.Session.onMessage (tsserver.js:146027:35)
    at Interface.<anonymous> (tsserver.js:147342:27)
    at suppressed_frame()
    at suppressed_frame()
    at suppressed_frame()
    at suppressed_frame()
    at suppressed_frame()
    at suppressed_frame()
    at suppressed_frame()
    at suppressed_frame()
    at suppressed_frame()

[minestarks]

@RyanCavanaugh repro! https://github.com/microsoft/tsserverfuzzer/issues/226

[typescript-bot]

Revised stack format and updated hash.

[typescript-bot]

This issue reproduced in the following context:
TypeScript version prefix: 3.9.6
VSCode version: 1.47.0-insider
Command requested: completionInfo
Hitting sessions: 508
Five line hash: 770cb3d3a974358c35063d0bf324f946
Stack:

    at isPropertyDeclaration (tsserver.js:11181:21)
    at isPrivateIdentifierPropertyDeclaration (tsserver.js:12007:16)
    at <anonymous> (tsserver.js:111641:36)
    at stringLiteralCompletionsFromProperties (tsserver.js:111640:59)
    at getStringLiteralCompletionEntries (tsserver.js:111573:36)
    at getStringLiteralCompletions (tsserver.js:111449:35)
    at getCompletionsAtPosition (tsserver.js:112185:67)
    at getCompletionsAtPosition (tsserver.js:138897:35)
    at unknown (suppressed.js:84:24)
    at Session.getCompletions (tsserver.js:148976:64)
    at _a.<computed> (tsserver.js:147913:61)
    at <anonymous> (tsserver.js:149553:88)
    at Session.executeWithRequestId (tsserver.js:149544:28)
    at Session.executeCommand (tsserver.js:149553:33)
    at Session.onMessage (tsserver.js:149577:35)
    at <anonymous> (tsserver.js:150893:27)
    at unknown (suppressed.js:203:13)
    at unknown (suppressed.js:316:10)
    at unknown (suppressed.js:461:12)
    at unknown (suppressed.js:172:10)
    at unknown (suppressed.js:203:13)
    at unknown (suppressed.js:295:12)
    at unknown (suppressed.js:276:11)
    at unknown (suppressed.js:210:10)
    at unknown (suppressed.js:166:17)

[andrewbranch]

This was fixed by @a-tarasyuk in #38481. Thanks Alex!

[typescript-bot]

This issue reproduced in the following context:
TypeScript version prefix: 3.9.7
VSCode version: 1.48.0-insider
Command requested: completionInfo
Hitting sessions: 328
Five line hash: 770cb3d3a974358c35063d0bf324f946
Stack:

    at isPropertyDeclaration (tsserver.js:11183:21)
    at isPrivateIdentifierPropertyDeclaration (tsserver.js:12009:16)
    at <anonymous> (tsserver.js:111643:36)
    at stringLiteralCompletionsFromProperties (tsserver.js:111642:59)
    at getStringLiteralCompletionEntries (tsserver.js:111575:36)
    at getStringLiteralCompletions (tsserver.js:111451:35)
    at getCompletionsAtPosition (tsserver.js:112187:67)
    at getCompletionsAtPosition (tsserver.js:138899:35)
    at Session.getCompletions (tsserver.js:148978:64)
    at _a.<computed> (tsserver.js:147915:61)
    at <anonymous> (tsserver.js:149555:88)
    at Session.executeWithRequestId (tsserver.js:149546:28)
    at Session.executeCommand (tsserver.js:149555:33)
    at Session.onMessage (tsserver.js:149579:35)
    at <anonymous> (tsserver.js:150895:27)
    at unknown (suppressed.js:223:5)
    at unknown (suppressed.js:315:10)
    at unknown (suppressed.js:460:12)
    at unknown (suppressed.js:172:10)
    at unknown (suppressed.js:223:5)
    at unknown (suppressed.js:309:12)
    at unknown (suppressed.js:290:11)
    at unknown (suppressed.js:224:10)
    at unknown (suppressed.js:181:23)