/**
 * @copyright Sister Software. All rights reserved.
 * @author Teffen Ellis, et al.
 * @license
 * See LICENSE file in the project root for full license information.
 */
declare const nodeInspectSymbol: unique symbol;
/**
 * Map of byte-pair encodings according to their BPE rank
 * @internal
 */
export declare class RanksMap {
    protected _prefixToSuffixRankMap: Map<
    /** Prefix */
    string, Map<
    /** Suffix */
    string, 
    /** Rank */
    number>>;
    getRank(prefix: string, suffix: string): number | undefined;
    constructor(vocab: VocabEntry[] | BPEVocab, mergesSpacesCount?: number);
    get size(): number;
    [nodeInspectSymbol](): string;
}
/**
 * A parsed vocabulary entry.
 * The rank of the byte-pair encoding is derived from the index of the pair in the `vocab.bpe` file.
 */
export interface VocabEntry {
    /** The word stem prefix in the pair. */
    prefix: string;
    /** The suffix token in the pair. */
    suffix: string;
}
/**
 * A vocabulary of byte-pair encodings.
 *
 * @see {@linkcode parseBPEFile}
 */
export interface BPEVocab {
    version: string;
    entries: VocabEntry[];
}
export {};