export type Json = boolean | number | string | null | {
    [property: string]: Json;
} | Json[];
export type JRPCVersion = "2.0";
export type JRPCId = number | string | void;
export type ConsoleLike = Pick<Console, "log" | "warn" | "error" | "debug" | "info" | "trace">;
export interface JRPCBase {
    jsonrpc?: JRPCVersion;
    id?: JRPCId;
}
export interface JRPCResponse<T> extends JRPCBase {
    result?: T;
    error?: any;
}
export interface JRPCRequest<T> extends JRPCBase {
    method: string;
    params?: T;
}
export type JRPCEngineNextCallback = (cb?: (done: (error?: Error) => void) => void) => void;
export type JRPCEngineEndCallback = (error?: Error) => void;
export type JRPCEngineReturnHandler = (done: (error?: Error) => void) => void;
interface IdMapValue {
    req: JRPCRequest<unknown>;
    res: JRPCResponse<unknown>;
    next: JRPCEngineNextCallback;
    end: JRPCEngineEndCallback;
}
export interface IdMap {
    [requestId: string]: IdMapValue;
}
export type JRPCMiddleware<T, U> = (req: JRPCRequest<T>, res: JRPCResponse<U>, next: JRPCEngineNextCallback, end: JRPCEngineEndCallback) => void;
export type AsyncJRPCEngineNextCallback = () => Promise<void>;
export type Maybe<T> = T | Partial<T> | null | undefined;
export interface JRPCSuccess<T> extends JRPCBase {
    result: Maybe<T>;
}
/**
 * A data object, that must be either:
 *
 * - A JSON-serializable object.
 * - An object with a `cause` property that is an error-like value, and any
 * other properties that are JSON-serializable.
 */
export type DataWithOptionalCause = Json | {
    [key: string]: Json | unknown;
    cause?: unknown;
};
/**
 * A data object, that must be either:
 *
 * - A valid DataWithOptionalCause value.
 * - undefined.
 */
export type OptionalDataWithOptionalCause = undefined | DataWithOptionalCause;
export interface JRPCError {
    code: number;
    message: string;
    data?: DataWithOptionalCause;
    stack?: string;
}
export interface PendingJRPCResponse<T> extends JRPCBase {
    result?: T;
    error?: Error | JRPCError;
}
export interface JRPCFailure extends JRPCBase {
    error: JRPCError;
}
export type AsyncJRPCMiddleware<T, U> = (req: JRPCRequest<T>, res: PendingJRPCResponse<U>, next: AsyncJRPCEngineNextCallback) => Promise<void>;
export type ReturnHandlerCallback = (error: null | Error) => void;
export type BufferEncoding = "ascii" | "utf8" | "utf-8" | "utf16le" | "ucs2" | "ucs-2" | "base64" | "latin1" | "binary" | "hex";
export type BlockData = string | string[];
export type Block = Record<string, BlockData>;
export type SendAsyncCallBack = (err: Error, providerRes: JRPCResponse<Block>) => void;
export type SendCallBack<U> = (err: any, providerRes: U) => void;
export type Payload = Partial<JRPCRequest<string[]>>;
export interface RequestArguments<T> {
    method: string;
    params?: T;
}
export interface ExtendedJsonRpcRequest<T> extends JRPCRequest<T> {
    skipCache?: boolean;
}
export {};