type RpcId = number | string | null;
type RpcRequestPreinit<T = unknown> = (undefined extends T ? RpcParamlessRequestPreinit : never) | RpcParamfulRequestPreinit<T>;
interface RpcParamfulRequestPreinit<T = unknown> {
    readonly id?: RpcId;
    readonly method: string;
    readonly params: T;
}
interface RpcParamlessRequestPreinit {
    readonly id?: RpcId;
    readonly method: string;
    readonly params?: undefined;
}
type RpcRequestInit<T = unknown> = (undefined extends T ? RpcParamlessRequestInit : never) | RpcParamfulRequestInit<T>;
interface RpcParamfulRequestInit<T = unknown> {
    readonly jsonrpc: "2.0";
    readonly id: RpcId;
    readonly method: string;
    readonly params: T;
}
interface RpcParamlessRequestInit {
    readonly jsonrpc: "2.0";
    readonly id: RpcId;
    readonly method: string;
    readonly params?: undefined;
}
declare class RpcRequest<T = unknown> {
    readonly id: RpcId;
    readonly method: string;
    readonly params: T;
    readonly jsonrpc: "2.0";
    constructor(id: RpcId, method: string, params: T);
    static from<T>(init: RpcRequestInit<T>): RpcRequest<T>;
    toJSON(): RpcRequestInit<T>;
}

export { type RpcId, type RpcParamfulRequestInit, type RpcParamfulRequestPreinit, type RpcParamlessRequestInit, type RpcParamlessRequestPreinit, RpcRequest, type RpcRequestInit, type RpcRequestPreinit };