import { Plugin, PromiseOrValue } from 'graphql-yoga';
export declare function hashSHA256(str: string, api?: {
    crypto: Crypto;
    TextEncoder: (typeof globalThis)['TextEncoder'];
}): Promise<string>;
export interface APQStoreOptions {
    max?: number;
    ttl?: number;
}
export declare function createInMemoryAPQStore(options?: APQStoreOptions): APQStore;
export interface APQOptions {
    store?: APQStore;
    hash?: (str: string, api: {
        crypto: Crypto;
        TextEncoder: typeof TextEncoder;
    }) => PromiseOrValue<string>;
}
export interface APQStore {
    get(key: string): PromiseOrValue<string | null | undefined>;
    set(key: string, query: string): PromiseOrValue<any>;
}
export interface APQExtension {
    version: 1;
    sha256Hash: string;
}
export declare function useAPQ(options?: APQOptions): Plugin;