Function substituteIndexedMappedType

test/fixtures/snapshot/typescript.js:62384–62388

(objectType, index)

            return !!(getUnionType([intersectTypes(type1, type2), neverType]).flags & 131072 /* TypeFlags.Never */);
        }
        function substituteIndexedMappedType(objectType, index) {
            var mapper = createTypeMapper([getTypeParameterFromMappedType(objectType)], [index]);
            var templateMapper = combineTypeMappers(objectType.mapper, mapper);
            return instantiateType(getTemplateTypeFromMappedType(objectType), templateMapper);
        }
        function getIndexedAccessType(objectType, indexType, accessFlags, accessNode, aliasSymbol, aliasTypeArguments) {
            if (accessFlags === void 0) { accessFlags = 0 /* AccessFlags.None */; }
            return getIndexedAccessTypeOrUndefined(objectType, indexType, accessFlags, accessNode, aliasSymbol, aliasTypeArguments) || (accessNode ? errorType : unknownType);