import { DBaseStateSet } from "./d-base-state-set";
import { DBaseStateSetSub } from "./d-base-state-set-sub";
import { DBaseStateSetSubDatum } from "./d-base-state-set-sub-datum";
export declare abstract class DBaseStateSetSubImpl implements DBaseStateSetSub {
    protected readonly _parent: DBaseStateSet;
    protected readonly _stateToInterval: Map<string, number>;
    protected readonly _intervalToDatum: Map<number, DBaseStateSetSubDatum>;
    constructor(parent: DBaseStateSet, intervalToDatum: Map<number, DBaseStateSetSubDatum>);
    add(state: string, interval: number): this;
    protected abstract newDatum(interval: number): DBaseStateSetSubDatum;
    remove(state: string): this;
    set(state: string, interval: number, on: boolean): this;
    has(state: string): boolean;
    clear(): this;
}