import * as React from 'react';
import { ReactNode } from 'react';
import { Cmd, Dispatcher, Sub } from 'tea-cup-fp';
export declare class DispatchBridge<Msg> {
    private d?;
    subscribe(d: Dispatcher<Msg>): void;
    dispatch(msg: Msg): void;
}
export type SetModelFunc<Model> = (model: Model) => void;
export declare class SetModelBridge<Model> {
    private sm;
    subscribe(sm: SetModelFunc<Model>): void;
    setModel(model: Model): void;
}
export type ProgramListener<Model, Msg> = (e: ProgramEvent<Model, Msg>) => void;
export type ProgramEvent<Model, Msg> = {
    tag: 'init';
    count: number;
    mac: [Model, Cmd<Msg>];
} | {
    tag: 'update';
    count: number;
    msg: Msg;
    mac: [Model, Cmd<Msg>];
};
export interface ProgramInterop<Model, Msg> {
    dispatchBridge?: DispatchBridge<Msg>;
    setModelBridge?: SetModelBridge<Model>;
    listener?: ProgramListener<Model, Msg>;
    paused?: () => boolean;
}
/**
 * The program props : asks for init, view, update and subs in order
 * to start the TEA MVU loop.
 */
export interface ProgramProps<Model, Msg> extends ProgramInterop<Model, Msg> {
    init: () => [Model, Cmd<Msg>];
    view: (dispatch: Dispatcher<Msg>, model: Model) => ReactNode;
    update: (msg: Msg, model: Model) => [Model, Cmd<Msg>];
    subscriptions: (model: Model) => Sub<Msg>;
    flushSyncDefault?: boolean;
}
/**
 * A React component that holds a TEA "program", implementing the MVU loop.
 */
export declare function Program<Model, Msg>(props: ProgramProps<Model, Msg>): React.ReactNode;
export declare function needsFlush(defaultValue: boolean | undefined, flush: boolean | undefined): boolean;