flow like the river

BACK_BACK/node_modules/graphql/validation/rules/NoUndefinedVariablesRule.d.ts

@@ -0,0 +1,12 @@
+import { ASTVisitor } from '../../language/visitor';
+import { ValidationContext } from '../ValidationContext';
+
+/**
+ * No undefined variables
+ *
+ * A GraphQL operation is only valid if all variables encountered, both directly
+ * and via fragment spreads, are defined by that operation.
+ */
+export function NoUndefinedVariablesRule(
+  context: ValidationContext,
+): ASTVisitor;