Function getBaseTypes

test/fixtures/snapshot/typescript.js:57173–57202

(type)

            error(node, ts.Diagnostics.Type_0_recursively_references_itself_as_a_base_type, typeToString(type, /*enclosingDeclaration*/ undefined, 2 /* TypeFormatFlags.WriteArrayAsGenericType */));
        }
        function getBaseTypes(type) {
            if (!type.baseTypesResolved) {
                if (pushTypeResolution(type, 7 /* TypeSystemPropertyName.ResolvedBaseTypes */)) {
                    if (type.objectFlags & 8 /* ObjectFlags.Tuple */) {
                        type.resolvedBaseTypes = [getTupleBaseType(type)];
                    }
                    else if (type.symbol.flags & (32 /* SymbolFlags.Class */ | 64 /* SymbolFlags.Interface */)) {
                        if (type.symbol.flags & 32 /* SymbolFlags.Class */) {
                            resolveBaseTypesOfClass(type);
                        }
                        if (type.symbol.flags & 64 /* SymbolFlags.Interface */) {
                            resolveBaseTypesOfInterface(type);
                        }
                    }
                    else {
                        ts.Debug.fail("type must be class or interface");
                    }
                    if (!popTypeResolution() && type.symbol.declarations) {
                        for (var _i = 0, _a = type.symbol.declarations; _i < _a.length; _i++) {
                            var declaration = _a[_i];
                            if (declaration.kind === 257 /* SyntaxKind.ClassDeclaration */ || declaration.kind === 258 /* SyntaxKind.InterfaceDeclaration */) {
                                reportCircularBaseType(declaration, type);
                            }
                        }
                    }
                }
                type.baseTypesResolved = true;
            }
            return type.resolvedBaseTypes;
        }
        function getTupleBaseType(type) {
            var elementTypes = ts.sameMap(type.typeParameters, function (t, i) { return type.elementFlags[i] & 8 /* ElementFlags.Variadic */ ? getIndexedAccessType(t, numberType) : t; });
            return createArrayType(getUnionType(elementTypes || ts.emptyArray), type.readonly);