TypeError: Cannot read properties of undefined (reading 'flags') at needsNameFromDeclaration at getNameForExportedSymbol #59159
Description
🔎 Search Terms
import type node class member completion parameter method
🕗 Version & Regression Information
- This is a crash
⏯ Playground Link
N/A
💻 Code
/// <reference path="fourslash.ts" /> // @module: nodenext // @Filename: /generation.d.ts //// export type GenerationConfigType = { max_length?: number }; // @FileName: /index.d.ts //// export declare class PreTrainedModel { //// _get_generation_config( //// param: import("./generation.js").GenerationConfigType, //// ): import("./generation.js").GenerationConfigType; //// } //// //// export declare class BlenderbotSmallPreTrainedModel extends PreTrainedModel { //// /*1*/ //// } verify.completions({ marker: "1", includes: [ { name: "_get_generation_config", insertText: `_get_generation_config(param: import("./generation.js").GenerationConfigType): import("./generation.js").GenerationConfigType;`, filterText: "_get_generation_config", }, ], preferences: { includeCompletionsWithClassMemberSnippets: true, includeCompletionsWithInsertText: true, }, isNewIdentifierLocation: true, });🙁 Actual behavior
crash
🙂 Expected behavior
no crash
Additional information about the issue
repro based on #59085 (comment):
Req #6451 - completionInfo at needsNameFromDeclaration (/typescript-5.6.0-dev.20240630/lib/typescript.js:138216:19) at getNameForExportedSymbol (/typescript-5.6.0-dev.20240630/lib/typescript.js:138210:7) at visit (/typescript-5.6.0-dev.20240630/lib/typescript.js:161488:20) at visitNode (/typescript-5.6.0-dev.20240630/lib/typescript.js:92400:19) at tryGetAutoImportableReferenceFromTypeNode (/typescript-5.6.0-dev.20240630/lib/typescript.js:161481:20) at /typescript-5.6.0-dev.20240630/lib/typescript.js:161118:37 at sameMap (/typescript-5.6.0-dev.20240630/lib/typescript.js:2470:22) at createSignatureDeclarationFromSignature (/typescript-5.6.0-dev.20240630/lib/typescript.js:161115:27) at outputMethod (/typescript-5.6.0-dev.20240630/lib/typescript.js:161017:20) at Object.addNewNodeForMemberSymbol (/typescript-5.6.0-dev.20240630/lib/typescript.js:160999:9) at getEntryForMemberCompletion (/typescript-5.6.0-dev.20240630/lib/typescript.js:163718:22) at createCompletionEntry (/typescript-5.6.0-dev.20240630/lib/typescript.js:163566:35) at getCompletionEntriesFromSymbols (/typescript-5.6.0-dev.20240630/lib/typescript.js:164192:19) at completionInfoFromData (/typescript-5.6.0-dev.20240630/lib/typescript.js:163218:23) at Object.getCompletionsAtPosition (/typescript-5.6.0-dev.20240630/lib/typescript.js:162764:24) at Object.getCompletionsAtPosition2 [as getCompletionsAtPosition] (/typescript-5.6.0-dev.20240630/lib/typescript.js:149346:35) at IOSession.getCompletions (/typescript-5.6.0-dev.20240630/lib/typescript.js:190799:54) at completionInfo (/typescript-5.6.0-dev.20240630/lib/typescript.js:189137:43) at /typescript-5.6.0-dev.20240630/lib/typescript.js:191603:15 at IOSession.executeWithRequestId (/typescript-5.6.0-dev.20240630/lib/typescript.js:191592:14) at IOSession.executeCommand (/typescript-5.6.0-dev.20240630/lib/typescript.js:191601:29) at IOSession.onMessage (/typescript-5.6.0-dev.20240630/lib/typescript.js:191649:68) at Interface.<anonymous> (/typescript-5.6.0-dev.20240630/lib/tsserver.js:501:14)