import * as React from "react";
import { IOWidget, Fun } from "./widget";
export interface Branch<i, o> {
    condition: Fun<i, boolean>;
    widget: IOWidget<i, o>;
}
export interface ChoiceProps<i, o> {
    input: i;
    branches: Branch<i, o>[];
    on_done: (output: o) => void;
}
export interface ChoiceState<i, o> {
}
export declare class Choice<i, o> extends React.Component<ChoiceProps<i, o>, ChoiceState<i, o>> {
    constructor(props: ChoiceProps<i, o>, context: any);
    render(): (JSX.Element | null)[];
}
export declare let choice: <i, o>(branches: Branch<i, o>[]) => IOWidget<i, o>;