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Eagerly fall back to TupleBase

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Nathan Shively-Sanders
2017-11-06 15:44:16 -08:00
parent c2374c4ec3
commit ea55de3e98
1 changed files with 2 additions and 2 deletions
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src/compiler/checker.ts
+2 -2
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@@ -4993,7 +4993,7 @@ namespace ts {
function getBaseTypes(type: InterfaceType): BaseType[] {
if (!type.resolvedBaseTypes) {
if (type.objectFlags & ObjectFlags.Tuple) {
type.resolvedBaseTypes = [createTypeFromGenericGlobalType(globalTupleBaseType || globalArrayType, [getUnionType(type.typeParameters)])];
type.resolvedBaseTypes = [createTypeFromGenericGlobalType(globalTupleBaseType, [getUnionType(type.typeParameters)])];
}
else if (type.symbol.flags & (SymbolFlags.Class | SymbolFlags.Interface)) {
if (type.symbol.flags & SymbolFlags.Class) {
@@ -24526,7 +24526,7 @@ namespace ts {
// TODO: ReadonlyArray and TupleBase should always be available, but haven't been required previously
globalReadonlyArrayType = <GenericType>getGlobalTypeOrUndefined("ReadonlyArray" as __String, /*arity*/ 1);
globalTupleBaseType = <GenericType>getGlobalTypeOrUndefined("TupleBase" as __String, /*arity*/ 1);
globalTupleBaseType = <GenericType>getGlobalTypeOrUndefined("TupleBase" as __String, /*arity*/ 1) || globalArrayType;
anyReadonlyArrayType = globalReadonlyArrayType ? createTypeFromGenericGlobalType(globalReadonlyArrayType, [anyType]) : anyArrayType;
globalThisType = <GenericType>getGlobalTypeOrUndefined("ThisType" as __String, /*arity*/ 1);
}