import type { DbFile } from '../../../../types/dbTypes';
export declare const SPLAT_EXTENSIONS: readonly ["ply", "spz", "splat", "ksplat", "sog"];
/** For a file input's `accept`. */
export declare const SPLAT_ACCEPT = ".ply,.spz,.splat,.ksplat,.sog";
export declare function isSplatExtension(extension: string | null | undefined): boolean;
/**
 * Which files Spark can render. Either signal is enough: an upload records the
 * type, while a file added through a generic path only carries an extension.
 */
export declare function isSplatFile(file: DbFile): boolean;
/**
 * Splat ids to switch on: the visible ones `seen` has not claimed yet, which it then claims.
 * Claiming every splat, visible or not, is what keeps a refetch from re-adding a hidden one.
 */
export declare function claimSplatIds(files: DbFile[], seen: Set<string>): string[];
/** Spark's `SplatFileType` values, as literals so only the loader ever imports Spark. */
export type SplatFileType = 'ply' | 'spz' | 'splat' | 'ksplat' | 'pcsogszip';
/**
 * Names the decoder for an extension. Assets are stored under an extensionless UUID,
 * so Spark cannot infer this from the download URL and throws if left to guess.
 */
export declare function splatFileType(extension: string | null | undefined): SplatFileType | undefined;
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