import { Record } from 'immutable';
import { Playhead } from '../ValueObject/Playhead';
/**
 * Make all properties in T null able
 */
export declare type Nullable<T> = {
    [P in keyof T]: T[P] | null;
};
export interface WithPlayheadInterface {
    readonly playhead: Playhead;
    setPlayhead(playhead?: Playhead): this;
    mutate(playhead: number | undefined, mutator: (self: this) => this): this;
}
export declare function RecordWithPlayhead<T, DefaultProps = Nullable<T>>(defaultState: DefaultProps, name: string, initialPlayhead?: Playhead): new (defaultProps?: DefaultProps | undefined) => WithPlayheadInterface & Record<{
    playhead: number;
} & T> & {
    playhead: number;
} & T;