import type { MediaKind, TimelineEngine } from '@elah/core';
import type { DragElementPayload } from './elementDrag';
import { isCompatibleTrackKind } from './trackCompat';
export { isCompatibleTrackKind };
export interface InsertAssetOptions {
    desiredStartFrame?: number;
    targetTrackId?: string;
    videoOnly?: boolean;
}
export type InsertAssetFailureReason = 'missing-asset' | 'no-track' | 'locked' | 'incompatible-track' | 'cancelled';
export type InsertedKind = MediaKind | 'element';
export type InsertAssetResult = {
    ok: true;
    kind: InsertedKind;
    trackId: string;
    clipIds: string[];
} | {
    ok: false;
    kind: InsertedKind;
    reason: InsertAssetFailureReason;
};
export declare function resolveDropPosition(existingClips: {
    startFrame: number;
    durationFrames: number;
}[], desiredStart: number, durationFrames: number): {
    startFrame: number;
    durationFrames: number;
};
export declare function insertMediaAsset(engine: TimelineEngine, assetId: string, opts?: InsertAssetOptions): Promise<InsertAssetResult>;
export declare function insertElement(engine: TimelineEngine, payload: DragElementPayload, opts?: InsertAssetOptions): InsertAssetResult;
export declare function growClipToAssetDuration(engine: TimelineEngine, clipId: string, expectedFallbackFrames: number, newDurationSec: number): void;