import { EntityMetadata } from './EntityMetadata';
import { Playhead } from '../ValueObject/Playhead';
export declare function isSerializableAction(action: any): action is SerializableAction;
export interface SerializableAction<Metadata extends EntityMetadata = EntityMetadata> {
    type: string;
    metadata: EntityMetadata & {
        playhead?: Playhead;
    } & Metadata;
    [extraProps: string]: any;
}