import { RichNode, RichText, RichElement } from './type';
export declare function createTextNode(content: string): RichText;
export declare function isElement(node: RichNode): node is RichElement;
export declare function createElementNode(tagName: string, htmlTagName: string): RichElement;
/**
 * 获取上一个兄弟节点
 * @param el
 * @returns
 */
export declare function getPreviousElement(el: RichNode): RichElement | null;
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