import type { Draft, Segment, Timerange } from "../draft.js";
export declare function setUuidProvider(fn: (() => string) | null): void;
export declare function uuid(): string;
export declare function hexToRgb(hex: string): [number, number, number];
export interface CompanionRefs {
    ids: string[];
    materials: Array<{
        type: string;
        data: Record<string, unknown>;
    }>;
}
export declare function createCompanionMaterials(trackType: "text" | "video" | "audio"): CompanionRefs;
export declare function registerCompanions(draft: Draft, companions: CompanionRefs): void;
export declare function baseSegment(id: string, materialId: string, trackId: string, timerange: Timerange, companionIds: string[], renderIndex: number): Segment;