/** Best-effort `FORM` (media type) for GEDCOM 7 `OBJE`.`FILE` from a URI or path. */
export declare function guessMediaFormFromUri(uri: string, mimeHint?: string | null): string;
/** `FORM` from a local `File` (`file.type` when set) and optional path fallback. */
export declare function guessMediaFormFromFile(file: File, pathHint?: string | null): string;
/** Remplace un `FORM` générique si l’extension du chemin permet de l’affiner. */
export declare function refineGenericObjeForm(form: string | undefined, sourceUri: string): string;