import { Tree } from './tree';
import { Node, Triple } from './types';
export interface FormatOptions {
    /** How to indent formatted strings. */
    indent?: number | null;
    /** If `true`, put initial attributes on the first line. */
    compact?: boolean;
}
/**
 * Format a `Tree` object into a PENMAN string.
 *
 * `options` consists of the following:
 *  - `indent`: How to indent formatted strings.
 *  - `compact`: If `true`, put initial attributes on the first line.
 *
 * @param tree - A Tree object.
 * @param options - Optional arguments.
 * @param options.indent - How to indent formatted strings.
 * @param options.compact - If `true`, put initial attributes on the first line.
 * @returns The PENMAN-serialized string of the `Tree` object.
 * @example
 * import { format } from 'penman-js';
 *
 * console.log(format(
 *   ['b', [['/', 'bark-01'],
 *          [':ARG0', ['d', [['/', 'dog']]]]]
 *   ]
 * ));
 * // (b / bark-01
 * //   :ARG0 (d / dog))
 */
export declare const format: (tree: Tree | Node, options?: FormatOptions) => string;
export interface FormatTriplesOptions {
    /** whether or not to indent the results, default true */
    indent?: boolean;
}
/**
 * Return the formatted triple conjunction of `triples`.
 *
 * `options` consists of the following:
 *  - `indent`: Whether or not to indent the results, default true.
 *
 * @param triples - An iterable of triples.
 * @param options - Optional arguments.
 * @param options.indent - Whether or not to indent the results, default true.
 * @returns The serialized triple conjunction of `triples`.
 * @example
 * import { decode, formatTriples } from 'penman-js';
 *
 * const g = decode('(b / bark-01 :ARG0 (d / dog))');
 * console.log(formatTriples(g.triples));
 * // instance(b, bark-01) ^
 * // ARG0(b, d) ^
 * // instance(d, dog)
 */
export declare const formatTriples: (triples: Triple[], options?: FormatTriplesOptions) => string;