import { TrieRoot } from '../TrieNode';
import { Sequence } from 'gensequence';
export declare const DATA = "__DATA__";
export interface ExportOptions {
    base?: number;
    comment?: string;
    /**
     * This will reduce the size of the `.trie` file by removing references to short suffixes.
     * But it does increase the size of the trie when loaded into memory.
     */
    optimizeSimpleReferences?: boolean;
    /**
     * To improve diffs, an EOL is added before each double letter prefix.
     * @default true
     */
    addLineBreaksToImproveDiffs?: boolean;
}
/**
 * Serialize a TrieRoot.
 */
export declare function serializeTrie(root: TrieRoot, options?: ExportOptions | number): Sequence<string>;
export declare function importTrie(linesX: Iterable<string> | string): TrieRoot;
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