12345678910111213
import Maybe from '../tsutils/Maybe.d.ts';import { DocumentNode, OperationDefinitionNode } from '../language/ast.d.ts';
/** * Returns an operation AST given a document AST and optionally an operation * name. If a name is not provided, an operation is only returned if only one is * provided in the document. */export function getOperationAST(  documentAST: DocumentNode,  operationName: Maybe<string>,): Maybe<OperationDefinitionNode>;