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

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+import { ASTVisitor } from '../../language/visitor';
+import { SDLValidationContext } from '../ValidationContext';
+
+export function duplicateDirectiveNameMessage(directiveName: string): string;
+
+export function existedDirectiveNameMessage(directiveName: string): string;
+
+/**
+ * Unique directive names
+ *
+ * A GraphQL document is only valid if all defined directives have unique names.
+ */
+export function UniqueDirectiveNames(context: SDLValidationContext): ASTVisitor;