import type { Delta } from "../delta/delta";
import type { Op, Ops } from "../delta/interface";
/**
 * 判断 Delta 是否以指定文本结尾
 * @param delta
 * @param text
 */
export declare const deltaEndsWith: (delta: Delta, text: string) => boolean;
/**
 * 标准化独立 EOL 字符
 * @param ops
 * @note 方便处理 Ops 的换行操作
 */
export declare const normalizeEOL: (ops: Ops) => Ops;
/**
 * 规范化 End Of Line
 * @param text
 */
export declare const formatEOL: (text: string) => string;
/**
 * 判断是否为 EOL Op
 * @param op
 */
export declare const isEOLOp: (op: Op | null) => boolean | null;
/**
 * 判断是否以 EOL 起始
 * @param op
 */
export declare const startsWithEOL: (op: Op | null) => boolean | null;
/**
 * 从 Delta 中提取文本
 * @param delta
 */
export declare const deltaToText: (delta: Delta) => string;