import { IMillisecondsImmutable, IMillisecondsMutable } from '@ef-carbon/primitive';
export interface IImmutable {
    readonly start: IMillisecondsImmutable;
    readonly end: IMillisecondsImmutable;
    readonly duration?: IMillisecondsImmutable;
}
export interface IMutable extends IImmutable {
    start: IMillisecondsMutable;
    end: IMillisecondsMutable;
}
export default IMutable;