/**
 * Cloudflare Workers adapter for email validation
 * Supports Workers, Pages Functions, and Durable Objects
 */
interface KVNamespace {
    get<T = unknown>(key: string, type?: 'text' | 'json' | 'arrayBuffer' | 'stream'): Promise<T | null>;
    put(key: string, value: string | ArrayBuffer | ReadableStream, options?: {
        expirationTtl?: number;
    }): Promise<void>;
    delete(key: string): Promise<void>;
}
interface DurableObjectNamespace {
    idFromName(name: string): DurableObjectId;
    get(id: DurableObjectId): DurableObjectStub;
}
interface DurableObjectId {
    toString(): string;
}
interface DurableObjectStub {
    fetch(request: Request): Promise<Response>;
}
interface DurableObjectState {
    storage: DurableObjectStorage;
}
interface DurableObjectStorage {
    get<T = unknown>(key: string): Promise<T | undefined>;
    put<T = unknown>(key: string, value: T): Promise<void>;
    delete(key: string): Promise<void>;
}
export interface CloudflareRequest extends Request {
    cf?: {
        country?: string;
        colo?: string;
        timezone?: string;
    };
}
export interface CloudflareEnv {
    EMAIL_CACHE?: KVNamespace;
    EMAIL_VALIDATOR?: DurableObjectNamespace;
    [key: string]: unknown;
}
export interface CloudflareContext {
    waitUntil(promise: Promise<unknown>): void;
    passThroughOnException(): void;
}
declare function workerHandler(request: CloudflareRequest, env: CloudflareEnv, ctx: CloudflareContext): Promise<Response>;
export declare class EmailValidatorDO {
    private state;
    private env;
    private cache;
    constructor(state: DurableObjectState, env: CloudflareEnv);
    fetch(request: Request): Promise<Response>;
    private handleValidation;
    private handleCacheClear;
    private handleCacheStats;
}
declare const _default: {
    fetch: typeof workerHandler;
    workerHandler: typeof workerHandler;
    EmailValidatorDO: typeof EmailValidatorDO;
};
export default _default;
export { workerHandler };