import type { EstimatorFactory } from "./contract.js";
/**
 * Counts the tokens of one piece of text. The whole of what this module knows about a
 * tokenizer library: replacing the library is replacing this function.
 */
export type EncodeCount = (text: string) => number;
/**
 * Builds a factory over a given encoder. The parameter is the seam the tests use to stand a
 * failing encoder up; every caller outside this module wants `estimatorFactory`.
 */
export declare const createEstimatorFactory: (count?: EncodeCount) => EstimatorFactory;
export declare const estimatorFactory: EstimatorFactory;