import { SchemaDirectiveVisitor } from 'graphql-tools';
interface PurgeCacheDirectiveProps {
    /**
     * The path to get extra nodes from result object.
     *
     * ```
     * // define
     * const schema = makeExecutableSchema({
     *   schemaDirectives: {
     *     purgeCache: PurgeCacheDirective({ extraNodesPath: '__invalid_nodes__' }),
     *   }
     * })
     *
     * type Mutation {
     *   editArticle(id: ID!): Article! @purgeCache(type: "Article")
     * }
     *
     * // @purgeCache will invalidate three nodes: Article:1, Article:2 and Comment:3.
     * const editArticleResult = {
     *   id: '1',
     *   content: '...',
     *   __invalid_nodes__: [
     *     { id: '2', type: 'Article' },
     *     { id: '3', type: 'Comment' }
     *   ]
     * }
     * ```
     */
    extraNodesPath?: string;
    /**
     * Custom function to resolve type and id.
     *
     * Same as `@logCache`, see `logCache.ts` for details.
     **/
    typeResolver?: (type: string, node: any) => string;
    idResolver?: (type: string, node: any) => string;
}
export declare const PurgeCacheDirective: ({ extraNodesPath, typeResolver, idResolver, }: PurgeCacheDirectiveProps) => typeof SchemaDirectiveVisitor;
export {};