type ArgumentsType<T> = T extends (...args: infer A) => any ? A : never;
type ReturnType<T> = T extends (...args: any) => infer R ? R : never;
type PromisifyFn<T> = ReturnType<T> extends Promise<any> ? T : (...args: ArgumentsType<T>) => Promise<Awaited<ReturnType<T>>>;
type BirpcResolver = (name: string, resolved: (...args: unknown[]) => unknown) => ((...args: unknown[]) => unknown) | undefined;
interface ChannelOptions {
    /**
     * Function to post raw message
     */
    post: (data: any, ...extras: any[]) => any | Promise<any>;
    /**
     * Listener to receive raw message
     */
    on: (fn: (data: any, ...extras: any[]) => void) => any | Promise<any>;
    /**
     * Custom function to serialize data
     *
     * by default it passes the data as-is
     */
    serialize?: (data: any) => any;
    /**
     * Custom function to deserialize data
     *
     * by default it passes the data as-is
     */
    deserialize?: (data: any) => any;
}
interface EventOptions<Remote> {
    /**
     * Names of remote functions that do not need response.
     */
    eventNames?: (keyof Remote)[];
    /**
     * Maximum timeout for waiting for response, in milliseconds.
     *
     * @default 60_000
     */
    timeout?: number;
    /**
     * Custom resolver to resolve function to be called
     *
     * For advanced use cases only
     */
    resolver?: BirpcResolver;
    /**
     * Custom error handler
     */
    onError?: (error: Error, functionName: string, args: any[]) => boolean | void;
}
type BirpcOptions<Remote> = EventOptions<Remote> & ChannelOptions;
type BirpcFn<T> = PromisifyFn<T> & {
    /**
     * Send event without asking for response
     */
    asEvent(...args: ArgumentsType<T>): void;
};
interface BirpcGroupFn<T> {
    /**
     * Call the remote function and wait for the result.
     */
    (...args: ArgumentsType<T>): Promise<Awaited<ReturnType<T>>[]>;
    /**
     * Send event without asking for response
     */
    asEvent(...args: ArgumentsType<T>): void;
}
type BirpcReturn<RemoteFunctions, LocalFunctions = Record<string, never>> = {
    [K in keyof RemoteFunctions]: BirpcFn<RemoteFunctions[K]>;
} & {
    $functions: LocalFunctions;
};
type BirpcGroupReturn<RemoteFunctions> = {
    [K in keyof RemoteFunctions]: BirpcGroupFn<RemoteFunctions[K]>;
};
interface BirpcGroup<RemoteFunctions, LocalFunctions = Record<string, never>> {
    readonly clients: BirpcReturn<RemoteFunctions, LocalFunctions>[];
    readonly functions: LocalFunctions;
    readonly broadcast: BirpcGroupReturn<RemoteFunctions>;
    updateChannels(fn?: ((channels: ChannelOptions[]) => void)): BirpcReturn<RemoteFunctions, LocalFunctions>[];
}
declare const DEFAULT_TIMEOUT = 60000;
declare function createBirpc<RemoteFunctions = Record<string, never>, LocalFunctions = Record<string, never>>(functions: LocalFunctions, options: BirpcOptions<RemoteFunctions>): BirpcReturn<RemoteFunctions, LocalFunctions>;
declare function cachedMap<T, R>(items: T[], fn: ((i: T) => R)): R[];
declare function createBirpcGroup<RemoteFunctions = Record<string, never>, LocalFunctions = Record<string, never>>(functions: LocalFunctions, channels: ChannelOptions[] | (() => ChannelOptions[]), options?: EventOptions<RemoteFunctions>): BirpcGroup<RemoteFunctions, LocalFunctions>;

export { type ArgumentsType, type BirpcFn, type BirpcGroup, type BirpcGroupFn, type BirpcGroupReturn, type BirpcOptions, type BirpcResolver, type BirpcReturn, type ChannelOptions, DEFAULT_TIMEOUT, type EventOptions, type PromisifyFn, type ReturnType, cachedMap, createBirpc, createBirpcGroup };