/**
 * IndentExtension — block-level attribute that applies margin-left for indentation.
 *
 * Commands: `indent()`, `outdent()` — act on the active paragraph/heading.
 */
import { Extension } from '@tiptap/core';
export interface IndentOptions {
    types: string[];
    minLevel: number;
    maxLevel: number;
    step: number;
}
declare module '@tiptap/core' {
    interface Commands<ReturnType> {
        indent: {
            indent: () => ReturnType;
            outdent: () => ReturnType;
        };
    }
}
export declare const IndentExtension: Extension<IndentOptions, any>;
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