export type GedcomActEntry = string[];
export type ActsExtractionResult = {
    entries: GedcomActEntry[];
    indis: number[];
};
/** Level-1 tag from a line like `1 BIRT` or `1 DIVF` (no false match on `DIV` vs `DIVF`). */
export declare function gedcomLevel1Tag(line: string): string | null;
export declare function extractActEntriesAndIndis(lines: string[], initialIndis: number[], textualIndiXrefToIndi?: ReadonlyMap<string, number>): ActsExtractionResult;