Improve references search and quick info on properties with type errors within nullable contextual types #61383
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…rs within nullable contextual types
typescript-bot
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For Uncommitted Bug
Andarist
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Mar 9, 2025
| @@ -3558,6 +3558,7 @@ function getSymbolAtLocationForQuickInfo(node: Node, checker: TypeChecker): Symb | |||
| * @internal | |||
| */ | |||
| export function getPropertySymbolsFromContextualType(node: ObjectLiteralElementWithName, checker: TypeChecker, contextualType: Type, unionSymbolOk: boolean): readonly Symbol[] { | |||
| contextualType = contextualType.getNonNullableType(); | |||
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This just fine-tunes the algorithm for a common case. By discarding nullable (that can't provide anything useful here as they don't have properties anyway) the !contextualType.isUnion() "fast path" is taken here. This allows for better symbol result to be returned from here - despite those locations having errors. Without this the symbol of the anonymous object literal type (the one with error) is picked and that's less useful.
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fixes #61382