type DiffOpType = 'equal' | 'insert' | 'delete';
interface LineDiffRow {
    type: DiffOpType | 'replace';
    oldIndex: number | null;
    newIndex: number | null;
    oldText: string;
    newText: string;
}
declare const diffLines: (oldText: string, newText: string) => LineDiffRow[];
interface WordDiffSeg {
    type: DiffOpType;
    text: string;
}
declare const diffWords: (oldText: string, newText: string) => {
    oldSegs: WordDiffSeg[];
    newSegs: WordDiffSeg[];
};
declare const pairReplacements: (rows: LineDiffRow[]) => LineDiffRow[];
export { diffLines, diffWords, pairReplacements };
export type { LineDiffRow, WordDiffSeg, DiffOpType };