import { EIP1193ProviderFunc, JsonRpcMiddlewareHandler, JsonRpcRequest } from "../types.js";
export declare class PublicProvider implements JsonRpcMiddlewareHandler {
    private privateJsonRpcMethods;
    private provider?;
    private rpcUrl?;
    constructor(rpcUrl?: string);
    requestHandler: (next: EIP1193ProviderFunc) => (request: JsonRpcRequest) => Promise<any>;
    getRpcUrl(): string | undefined;
    setRpcUrl(rpcUrl: string): void;
}