flow like the river

VISUALIZACION/node_modules/graphql/utilities/getOperationAST.d.ts

@@ -0,0 +1,13 @@
+import { Maybe } from '../jsutils/Maybe';
+
+import { DocumentNode, OperationDefinitionNode } from '../language/ast';
+
+/**
+ * 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>;