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Fixed cache key computation for tuple target types with partially named members (#55695)

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This commit is contained in:
Mateusz Burzyński
2023-09-11 23:41:08 +02:00
committed by GitHub
parent 4f899a1691
commit 4b0f54fe9f
5 changed files with 190 additions and 2 deletions
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3
src/compiler/checker.ts
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@@ -16392,10 +16392,9 @@ export function createTypeChecker(host: TypeCheckerHost): TypeChecker {
// [...X[]] is equivalent to just X[]
return readonly ? globalReadonlyArrayType : globalArrayType;
}
const memberIds = mapDefined(namedMemberDeclarations, node => node ? getNodeId(node) : undefined);
const key = map(elementFlags, f => f & ElementFlags.Required ? "#" : f & ElementFlags.Optional ? "?" : f & ElementFlags.Rest ? "." : "*").join() +
(readonly ? "R" : "") +
(memberIds.length ? "," + memberIds.join(",") : "");
(some(namedMemberDeclarations, node => !!node) ? "," + map(namedMemberDeclarations, node => node ? getNodeId(node) : "_").join(",") : "");
let type = tupleTypes.get(key);
if (!type) {
tupleTypes.set(key, type = createTupleTargetType(elementFlags, readonly, namedMemberDeclarations));