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node_modules/graphql/validation/rules/NoUndefinedVariables.d.ts

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+import Maybe from '../../tsutils/Maybe';
+import { ASTVisitor } from '../../language/visitor';
+import { ValidationContext } from '../ValidationContext';
+
+export function undefinedVarMessage(
+  varName: string,
+  opName: Maybe<string>,
+): string;
+
+/**
+ * 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 NoUndefinedVariables(context: ValidationContext): ASTVisitor;