Typescript: Die Eigenschaft 'parent' von undefined kann in collectEnclosingScopes nicht gelesen werden

Erstellt am 21. März 2019 · 3Kommentare · Quelle: microsoft/TypeScript

TypeScript-Version: 3.4.0-rc

Fehler

Beim Bearbeiten von Code in VS Code ist dieser Fehler aufgetreten. Sorry, noch keine Repo-Schritte

  ERR TypeScript Server Error (3.4.0-rc)
Cannot read property 'parent' of undefined
TypeError: Cannot read property 'parent' of undefined
    at collectEnclosingScopes (tsserver.js:117195:127)
    at getPossibleExtractionsWorker (tsserver.js:117275:30)
    at getPossibleExtractions (tsserver.js:117232:26)
    at Object.getAvailableActions (tsserver.js:116745:35)
    at tsserver.js:111488:128
    at getIterator (tsserver.js:625:23)
    at Object.next (tsserver.js:620:35)
    at Object.arrayFrom (tsserver.js:1253:32)
    at Object.getApplicableRefactors (tsserver.js:111487:23)
    at Proxy.getApplicableRefactors (tsserver.js:121287:32)
    at IOSession.Session.getApplicableRefactors (tsserver.js:130013:53)
    at Session.handlers.ts.createMapFromTemplate._a.(anonymous function) (tsserver.js:128853:61)
    at tsserver.js:130237:88
    at IOSession.Session.executeWithRequestId (tsserver.js:130228:28)
    at IOSession.Session.executeCommand (tsserver.js:130237:33)
    at IOSession.Session.onMessage (tsserver.js:130259:35)
    at Interface.<anonymous> (tsserver.js:131556:27)
    at Interface.emit (events.js:182:13)
    at Interface._onLine (readline.js:290:10)
    at Interface._normalWrite (readline.js:433:12)
    at Socket.ondata (readline.js:149:10)
    at Socket.emit (events.js:182:13)
    at addChunk (_stream_readable.js:279:12)
    at readableAddChunk (_stream_readable.js:264:11)
    at Socket.Readable.push (_stream_readable.js:219:10)
    at Pipe.onread (net.js:636:20): Error: TypeScript Server Error (3.4.0-rc)

Bug

Quelle

mjbvz

Hilfreichster Kommentar

Ich habe auch einen ähnlichen Fehler erhalten:

TypeScript-Versionen : 3.7.1-rc , 3.7.2 , 3.7.3-insiders.20191123

Es tritt kein Fehler auf <=3.6.4

TypeError: Cannot read property 'parent' of undefined
    at Object.getDeclarationOfExpando (/<redacted>/node_modules/typescript/lib/tsc.js:8604:19)
    at getTypeOfFuncClassEnumModule (/<redacted>/node_modules/typescript/lib/tsc.js:32596:40)
    at getTypeOfSymbol (/<redacted>/node_modules/typescript/lib/tsc.js:32702:24)
    at getExternalModuleMember (/<redacted>/node_modules/typescript/lib/tsc.js:28512:64)
    at getTargetOfExportSpecifier (/<redacted>/node_modules/typescript/lib/tsc.js:28557:17)
    at getTargetOfAliasDeclaration (/<redacted>/node_modules/typescript/lib/tsc.js:28600:28)
    at resolveAlias (/<redacted>/node_modules/typescript/lib/tsc.js:28633:30)
    at resolveSymbol (/<redacted>/node_modules/typescript/lib/tsc.js:28623:67)
    at getSymbolIfSameReference (/<redacted>/node_modules/typescript/lib/tsc.js:29170:33)
    at /<redacted>/node_modules/typescript/lib/tsc.js:29164:21

morrisallison am 23. Nov. 2019

👍5

Alle 3 Kommentare

Der einzige Ort, an dem dies im Code passieren kann, ist hier:

        while (true) {
            current = current.parent;
            // A function parameter's initializer is actually in the outer scope, not the function declaration
            if (current.kind === SyntaxKind.Parameter) {
                // Skip all the way to the outer scope of the function that declared this parameter
                current = findAncestor(current, parent => isFunctionLikeDeclaration(parent))!.parent;
            }

Ich vermute, wir haben einen Parameter in einem JSDoc in der Nähe der obersten Ebene gefunden und dann versucht, zur einschließenden Funktion dec zu gelangen, aber keinen gefunden und einen Tiefpunkt erreicht.

findAncestor(...)! ist sehr verdächtig und es wäre schön, es zu verbieten ...

RyanCavanaugh am 26. März 2019

Ich habe einen ähnlichen Fehler erhalten:

Version: Typoskript 3.7.0-dev.20191017

ERROR in ./node_modules/hammerjs/hammer.js                                         
Module build failed (from ./node_modules/ts-loader/index.js):                       
TypeError: Cannot read property 'parent' of undefined                               
    at getOuterTypeParameters (/<redacted>/node_modules/typescript/lib/typescript.js:39886:29)                                   
    at getOuterTypeParametersOfClassOrInterface (/<redacted>/node_modules/typescript/lib/typescript.js:39944:20)
    at getDeclaredTypeOfClassOrInterface (/<redacted>/node_modules/typescript/lib/typescript.js:40217:43)
    at createAnonymousTypeNode (/<redacted>/node_modules/typescript/lib/typescript.js:36601:59)
    at typeToTypeNodeHelper (/<redacted>/node_modules/typescript/lib/typescript.js:36547:28)                                     
    at /<redacted>/node_modules/typescript/lib/typescript.js:36336:106
    at withContext (/<redacted>/node_modules/typescript/lib/typescript.js:36381:37)
    at Object.typeToTypeNode (/<redacted>/node_modules/typescript/lib/typescript.js:36336:28)
    at typeToString (/<redacted>/node_modules/typescript/lib/typescript.js:36303:40)                                             
    at reportNonexistentProperty (/<redacted>/node_modules/typescript/lib/typescript.js:54143:165)

marcusbuffett am 23. Okt. 2019