Function cleanup

test/fixtures/snapshot/typescript.js:54755–54758

(result)

                                || typeToTypeNodeHelper(getTypeFromTypeNode(a), context);
                        })));
                        function cleanup(result) {
                            context.enclosingDeclaration = oldEnclosing;
                            return result;
                        }
                    });
                    if (result.length === clauses.length) {
                        return result;