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Fixed a bug that results in a spurious error when specializing an old… #9274

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merged 1 commit into from
Oct 20, 2024
Merged

Fixed a bug that results in a spurious error when specializing an old… #9274

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20 changes: 15 additions & 5 deletions packages/pyright-internal/src/analyzer/typeUtils.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -2004,14 +2004,24 @@ export function getTypeVarArgsRecursive(type: Type, recursionCount = 0): TypeVar
recursionCount++;

const aliasInfo = type.props?.typeAliasInfo;
if (aliasInfo?.typeArgs) {
if (aliasInfo) {
const combinedList: TypeVarType[] = [];

aliasInfo?.typeArgs.forEach((typeArg) => {
addTypeVarsToListIfUnique(combinedList, getTypeVarArgsRecursive(typeArg, recursionCount));
});
if (aliasInfo.typeArgs) {
aliasInfo?.typeArgs.forEach((typeArg) => {
addTypeVarsToListIfUnique(combinedList, getTypeVarArgsRecursive(typeArg, recursionCount));
});

return combinedList;
return combinedList;
}

if (aliasInfo.shared.typeParams) {
aliasInfo.shared.typeParams.forEach((typeParam) => {
addTypeVarsToListIfUnique(combinedList, [typeParam]);
});

return combinedList;
}
}

if (isTypeVar(type)) {
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