TypeError: Cannot read properties of undefined (reading 'flags')

[JoshuaKGoldberg]

Found when running tsd on https://github.com/League-of-Foundry-Developers/foundry-vtt-types/commit/6cd18412b0ab71584951d4fb1f2a08482aba495d.

TypeError: Cannot read properties of undefined (reading 'flags')
      at getPropertyOfObjectType (/home/josh/repos/tsd/node_modules/@tsd/typescript/typescript/lib/typescript.js:57213:22)
      at getPropertyOfType (/home/josh/repos/tsd/node_modules/@tsd/typescript/typescript/lib/typescript.js:57873:24)
      at resolveExportByName (/home/josh/repos/tsd/node_modules/@tsd/typescript/typescript/lib/typescript.js:49087:46)
      at canHaveSyntheticDefault (/home/josh/repos/tsd/node_modules/@tsd/typescript/typescript/lib/typescript.js:49126:21)
      at getExternalModuleMember (/home/josh/repos/tsd/node_modules/@tsd/typescript/typescript/lib/typescript.js:49296:73)
      at getTargetOfImportSpecifier (/home/josh/repos/tsd/node_modules/@tsd/typescript/typescript/lib/typescript.js:49374:28)
      at getTargetOfAliasDeclaration (/home/josh/repos/tsd/node_modules/@tsd/typescript/typescript/lib/typescript.js:49443:28)
      at resolveAlias (/home/josh/repos/tsd/node_modules/@tsd/typescript/typescript/lib/typescript.js:49483:30)
      at getSymbol (/home/josh/repos/tsd/node_modules/@tsd/typescript/typescript/lib/typescript.js:48040:38)
      at resolveNameHelper (/home/josh/repos/tsd/node_modules/@tsd/typescript/typescript/lib/typescript.js:48333:34)

Full call stack from Error.stackTraceLimit = Infinity

``` TypeError: Cannot read properties of undefined (reading 'flags') at getPropertyOfObjectType (/home/josh/repos/tsd/node_modules/@tsd/typescript/typescript/lib/typescript.js:57213:22) at getPropertyOfType (/home/josh/repos/tsd/node_modules/@tsd/typescript/typescript/lib/typescript.js:57873:24) at resolveExportByName (/home/josh/repos/tsd/node_modules/@tsd/typescript/typescript/lib/typescript.js:49087:46) at canHaveSyntheticDefault (/home/josh/repos/tsd/node_modules/@tsd/typescript/typescript/lib/typescript.js:49126:21) at getExternalModuleMember (/home/josh/repos/tsd/node_modules/@tsd/typescript/typescript/lib/typescript.js:49296:73) at getTargetOfImportSpecifier (/home/josh/repos/tsd/node_modules/@tsd/typescript/typescript/lib/typescript.js:49374:28) at getTargetOfAliasDeclaration (/home/josh/repos/tsd/node_modules/@tsd/typescript/typescript/lib/typescript.js:49443:28) at resolveAlias (/home/josh/repos/tsd/node_modules/@tsd/typescript/typescript/lib/typescript.js:49483:30) at getSymbol (/home/josh/repos/tsd/node_modules/@tsd/typescript/typescript/lib/typescript.js:48040:38) at resolveNameHelper (/home/josh/repos/tsd/node_modules/@tsd/typescript/typescript/lib/typescript.js:48333:34) at resolveName (/home/josh/repos/tsd/node_modules/@tsd/typescript/typescript/lib/typescript.js:48316:20) at resolveEntityName (/home/josh/repos/tsd/node_modules/@tsd/typescript/typescript/lib/typescript.js:49655:42) at getTargetOfExportSpecifier (/home/josh/repos/tsd/node_modules/@tsd/typescript/typescript/lib/typescript.js:49395:17) at getTargetOfAliasDeclaration (/home/josh/repos/tsd/node_modules/@tsd/typescript/typescript/lib/typescript.js:49445:28) at resolveAlias (/home/josh/repos/tsd/node_modules/@tsd/typescript/typescript/lib/typescript.js:49483:30) at symbolIsValue (/home/josh/repos/tsd/node_modules/@tsd/typescript/typescript/lib/typescript.js:50346:98) at isNamedMember (/home/josh/repos/tsd/node_modules/@tsd/typescript/typescript/lib/typescript.js:50417:58) at /home/josh/repos/tsd/node_modules/@tsd/typescript/typescript/lib/typescript.js:50410:21 at Map.forEach () at getNamedMembers (/home/josh/repos/tsd/node_modules/@tsd/typescript/typescript/lib/typescript.js:50409:21) at setStructuredTypeMembers (/home/josh/repos/tsd/node_modules/@tsd/typescript/typescript/lib/typescript.js:50433:39) at resolveAnonymousTypeMembers (/home/josh/repos/tsd/node_modules/@tsd/typescript/typescript/lib/typescript.js:56878:17) at resolveStructuredTypeMembers (/home/josh/repos/tsd/node_modules/@tsd/typescript/typescript/lib/typescript.js:57187:25) at getSignaturesOfStructuredType (/home/josh/repos/tsd/node_modules/@tsd/typescript/typescript/lib/typescript.js:57882:32) at resolveESModuleSymbol (/home/josh/repos/tsd/node_modules/@tsd/typescript/typescript/lib/typescript.js:50015:36) at getTargetOfNamespaceImport (/home/josh/repos/tsd/node_modules/@tsd/typescript/typescript/lib/typescript.js:49204:28) at getTargetOfAliasDeclaration (/home/josh/repos/tsd/node_modules/@tsd/typescript/typescript/lib/typescript.js:49438:28) at resolveAlias (/home/josh/repos/tsd/node_modules/@tsd/typescript/typescript/lib/typescript.js:49483:30) at getSymbol (/home/josh/repos/tsd/node_modules/@tsd/typescript/typescript/lib/typescript.js:48040:38) at resolveNameHelper (/home/josh/repos/tsd/node_modules/@tsd/typescript/typescript/lib/typescript.js:48333:34) at resolveName (/home/josh/repos/tsd/node_modules/@tsd/typescript/typescript/lib/typescript.js:48316:20) at resolveEntityName (/home/josh/repos/tsd/node_modules/@tsd/typescript/typescript/lib/typescript.js:49655:42) at getTargetOfExportSpecifier (/home/josh/repos/tsd/node_modules/@tsd/typescript/typescript/lib/typescript.js:49395:17) at getTargetOfAliasDeclaration (/home/josh/repos/tsd/node_modules/@tsd/typescript/typescript/lib/typescript.js:49445:28) at resolveAlias (/home/josh/repos/tsd/node_modules/@tsd/typescript/typescript/lib/typescript.js:49483:30) at symbolIsValue (/home/josh/repos/tsd/node_modules/@tsd/typescript/typescript/lib/typescript.js:50346:98) at isNamedMember (/home/josh/repos/tsd/node_modules/@tsd/typescript/typescript/lib/typescript.js:50417:58) at /home/josh/repos/tsd/node_modules/@tsd/typescript/typescript/lib/typescript.js:50410:21 at Map.forEach () at getNamedMembers (/home/josh/repos/tsd/node_modules/@tsd/typescript/typescript/lib/typescript.js:50409:21) at setStructuredTypeMembers (/home/josh/repos/tsd/node_modules/@tsd/typescript/typescript/lib/typescript.js:50433:39) at resolveAnonymousTypeMembers (/home/josh/repos/tsd/node_modules/@tsd/typescript/typescript/lib/typescript.js:56878:17) at resolveStructuredTypeMembers (/home/josh/repos/tsd/node_modules/@tsd/typescript/typescript/lib/typescript.js:57187:25) at getSignaturesOfStructuredType (/home/josh/repos/tsd/node_modules/@tsd/typescript/typescript/lib/typescript.js:57882:32) at resolveESModuleSymbol (/home/josh/repos/tsd/node_modules/@tsd/typescript/typescript/lib/typescript.js:50015:36) at getTargetOfNamespaceImport (/home/josh/repos/tsd/node_modules/@tsd/typescript/typescript/lib/typescript.js:49204:28) at getTargetOfAliasDeclaration (/home/josh/repos/tsd/node_modules/@tsd/typescript/typescript/lib/typescript.js:49438:28) at resolveAlias (/home/josh/repos/tsd/node_modules/@tsd/typescript/typescript/lib/typescript.js:49483:30) at getSymbol (/home/josh/repos/tsd/node_modules/@tsd/typescript/typescript/lib/typescript.js:48040:38) at resolveNameHelper (/home/josh/repos/tsd/node_modules/@tsd/typescript/typescript/lib/typescript.js:48333:34) at resolveName (/home/josh/repos/tsd/node_modules/@tsd/typescript/typescript/lib/typescript.js:48316:20) at resolveEntityName (/home/josh/repos/tsd/node_modules/@tsd/typescript/typescript/lib/typescript.js:49655:42) at getTargetOfAliasLikeExpression (/home/josh/repos/tsd/node_modules/@tsd/typescript/typescript/lib/typescript.js:49412:29) at getTargetOfExportAssignment (/home/josh/repos/tsd/node_modules/@tsd/typescript/typescript/lib/typescript.js:49401:28) at getTargetOfAliasDeclaration (/home/josh/repos/tsd/node_modules/@tsd/typescript/typescript/lib/typescript.js:49448:28) at resolveAlias (/home/josh/repos/tsd/node_modules/@tsd/typescript/typescript/lib/typescript.js:49483:30) at resolveSymbol (/home/josh/repos/tsd/node_modules/@tsd/typescript/typescript/lib/typescript.js:49473:67) at resolveExternalModuleSymbol (/home/josh/repos/tsd/node_modules/@tsd/typescript/typescript/lib/typescript.js:49965:36) at getTargetOfNamespaceExportDeclaration (/home/josh/repos/tsd/node_modules/@tsd/typescript/typescript/lib/typescript.js:49388:28) at getTargetOfAliasDeclaration (/home/josh/repos/tsd/node_modules/@tsd/typescript/typescript/lib/typescript.js:49450:28) at resolveAlias (/home/josh/repos/tsd/node_modules/@tsd/typescript/typescript/lib/typescript.js:49483:30) at resolveSymbol (/home/josh/repos/tsd/node_modules/@tsd/typescript/typescript/lib/typescript.js:49473:67) at mergeSymbol (/home/josh/repos/tsd/node_modules/@tsd/typescript/typescript/lib/typescript.js:47826:42) at /home/josh/repos/tsd/node_modules/@tsd/typescript/typescript/lib/typescript.js:47941:47 at Map.forEach () at mergeSymbolTable (/home/josh/repos/tsd/node_modules/@tsd/typescript/typescript/lib/typescript.js:47939:20) at mergeModuleAugmentation (/home/josh/repos/tsd/node_modules/@tsd/typescript/typescript/lib/typescript.js:47955:17) at initializeTypeChecker (/home/josh/repos/tsd/node_modules/@tsd/typescript/typescript/lib/typescript.js:85248:25) at Object.createTypeChecker (/home/josh/repos/tsd/node_modules/@tsd/typescript/typescript/lib/typescript.js:47597:9) at getDiagnosticsProducingTypeChecker (/home/josh/repos/tsd/node_modules/@tsd/typescript/typescript/lib/typescript.js:114600:93) at /home/josh/repos/tsd/node_modules/@tsd/typescript/typescript/lib/typescript.js:114735:35 at runWithCancellationToken (/home/josh/repos/tsd/node_modules/@tsd/typescript/typescript/lib/typescript.js:114705:24) at getBindAndCheckDiagnosticsForFileNoCache (/home/josh/repos/tsd/node_modules/@tsd/typescript/typescript/lib/typescript.js:114731:20) at getAndCacheDiagnostics (/home/josh/repos/tsd/node_modules/@tsd/typescript/typescript/lib/typescript.js:115008:26) at getBindAndCheckDiagnosticsForFile (/home/josh/repos/tsd/node_modules/@tsd/typescript/typescript/lib/typescript.js:114728:20) at getSemanticDiagnosticsForFile (/home/josh/repos/tsd/node_modules/@tsd/typescript/typescript/lib/typescript.js:114725:61) at /home/josh/repos/tsd/node_modules/@tsd/typescript/typescript/lib/typescript.js:114653:24 at Object.flatMap (/home/josh/repos/tsd/node_modules/@tsd/typescript/typescript/lib/typescript.js:716:25) at getDiagnosticsHelper (/home/josh/repos/tsd/node_modules/@tsd/typescript/typescript/lib/typescript.js:114649:56) at Object.getSemanticDiagnostics (/home/josh/repos/tsd/node_modules/@tsd/typescript/typescript/lib/typescript.js:114660:20) at getDiagnostics (/home/josh/repos/tsd/dist/lib/compiler.js:76:10) at /home/josh/repos/tsd/dist/lib/index.js:91:42 at Generator.next () at fulfilled (/home/josh/repos/tsd/dist/lib/index.js:5:58) at processTicksAndRejections (node:internal/process/task_queues:96:5) ```

[JoshuaKGoldberg]

Ah! Duplicate of https://github.com/microsoft/TypeScript/pull/47183.

[ghost91-]

@JoshuaKGoldberg https://github.com/microsoft/TypeScript/pull/47183 has been closed, but the issue still persists in tsd 0.20.0, which uses tsc 4.6.0. Is the fix in tsc already included in 4.6.0? If so, this might be something different...

[JoshuaKGoldberg]

It should be. I haven't checked this project since the 4.6.0 release.

[ghost91-]

https://github.com/League-of-Foundry-Developers/foundry-vtt-types/commit/5bc913b021df810f69c7793634aa42bdb70db5e7 is still broken :(

[ghost91-]

@SamVerschueren is there anything we can do to help solve this issue? It's a major blocker for us right now and it doesn't seem like there is any progress.

@JoshuaKGoldberg, I believe you had some ideas about what was going on...?

[ghost91-]

@SamVerschueren bump...? :)

[JoshuaKGoldberg]

Closing out my old issues for repos I no longer have context on. If anybody has a need for what this issue was asking about, I'd encourage them/you to file a new issue. Cheers!

[JoshuaKGoldberg]

Oh, and: I have no idea anymore. Sorry 😄