import type { CrocoProjectState } from "./preproduction-workspace.ts";
import type { VideoArtifact, VideoGenerationRun } from "./video-production-state.ts";
/** Read, edit and verify one native file with optimistic concurrency for both import and generation. */
export declare function editNativeVideoComposition<T extends {
    html: string;
}>(origin: string, projectFolder: string, compositionPath: string, edit: (html: string) => T | Promise<T>, signal: AbortSignal, expectedVersion?: string): Promise<T & {
    compositionVersion: string;
}>;
/** Sync a verified H3 artifact, retaining its task identity and actual media coverage. */
export declare function syncNativeVideoClip(origin: string, projectFolder: string, run: Pick<VideoGenerationRun, "unitId" | "compositionPath" | "previousArtifactId" | "previousImportedClip">, artifact: Pick<VideoArtifact, "id" | "relativePath" | "durationSeconds" | "hasAudio">, state: CrocoProjectState, signal: AbortSignal): Promise<string>;
/** Prepare a reversible native file write; rollback uses the latest native file revision. */
export declare function prepareNativeVideoVersion(origin: string, projectFolder: string, run: VideoGenerationRun, artifact: VideoArtifact, state: CrocoProjectState, signal: AbortSignal, recoveryTimeoutMs: number): Promise<{
    elementId: string;
    commit(): Promise<void>;
    rollback(): Promise<void>;
}>;