export declare enum Direction {
    PLAIN_TO_TYPED = "PLAIN_TO_TYPED",
    TYPED_TO_PLAIN = "TYPED_TO_PLAIN"
}
export declare enum Visibility {
    EXPOSE = "EXPOSE",
    EXCLUDE = "EXCLUDE"
}
export interface SelectOptions {
    toTypedOnly?: boolean;
    toPlainOnly?: boolean;
    [key: string]: any;
}
export interface SelectFunction {
    (obj: any, direction: Direction, options?: SelectOptions): boolean;
}
declare type SelectorOptionsTuple = [SelectFunction, SelectOptions | undefined];
export declare class Selectable {
    selectors: SelectorOptionsTuple[];
    defaultVisibility: Visibility;
    /**
     * Add a select function, possibly with options, that is asked if this
     * selectable should be selected for a transformation.
     * @param selector A function that is passed the object to be transformed,
     *                 the transformation direction and the options. So the
     *                 options can be used to prametrize the function.
     * @param options An object implementing SelectOptions.
     */
    addSelector(selector: SelectFunction, options?: SelectOptions): void;
    /**
     * Is this selectable to be selected for the given object and direction?
     * @returns either `Visibility.EXPOSE` or `Visibility.EXCLUDE` if there
     *          is an explicit answer, `undefined` otherwise.
     */
    selected(obj: any, direction: Direction): Visibility | undefined;
    private doesSelectorApply;
}
export {};