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export interface JsonRpcObject {  id: number;  jsonrpc: '2.0';}
export interface JsonRpcRequest extends JsonRpcObject {  method: string;  params: unknown[];}
export interface JsonRpcResponseBaseError {  code: number;  data?: number | string;  message: string;}
export interface RpcErrorInterface<T> {  code: number;  data?: T;  message: string;  stack: string;}
interface JsonRpcResponseSingle<T> {  error?: JsonRpcResponseBaseError;  result: T;}
interface JsonRpcResponseSubscription<T> {  method?: string;  params: {    error?: JsonRpcResponseBaseError;    result: T;    subscription: number | string;  };}
export type JsonRpcResponseBase<T> = JsonRpcResponseSingle<T> & JsonRpcResponseSubscription<T>;
export type JsonRpcResponse<T> = JsonRpcObject & JsonRpcResponseBase<T>;
export type ProviderInterfaceCallback = (error: Error | null, result: any) => void;
export type ProviderInterfaceEmitted = 'connected' | 'disconnected' | 'error';
export type ProviderInterfaceEmitCb = (value?: any) => any;
export interface ProviderInterface {  /** true if the provider supports subscriptions (not available for HTTP) */  readonly hasSubscriptions: boolean;  /** true if the clone() functionality is available on the provider */  readonly isClonable: boolean;  /** true if the provider is currently connected (ws/sc has connection logic) */  readonly isConnected: boolean;  /** (optional) stats for the provider with connections/bytes */  readonly stats?: ProviderStats;
  clone (): ProviderInterface;  connect (): Promise<void>;  disconnect (): Promise<void>;  on (type: ProviderInterfaceEmitted, sub: ProviderInterfaceEmitCb): () => void;  send <T = any> (method: string, params: unknown[], isCacheable?: boolean): Promise<T>;  subscribe (type: string, method: string, params: unknown[], cb: ProviderInterfaceCallback): Promise<number | string>;  unsubscribe (type: string, method: string, id: number | string): Promise<boolean>;}
export interface EndpointStats {  bytesRecv: number;  bytesSent: number;  cached: number;  errors: number;  requests: number;  subscriptions: number;  timeout: number;}
export interface ProviderStats {  active: {    requests: number;    subscriptions: number;  };  total: EndpointStats;}