/**
 * Copyright 2017 Yahoo Holdings Inc.
 * Licensed under the terms of the MIT license. See LICENSE file in project root for terms.
 */
import type { ICerebroConfig, ICerebroConfigEntry, ICerebroConfigOptions, ICerebroContext, ICerebroOptions } from './interfaces';
/**
 * Cerebro is the main class that creates the configuration.
 * It takes a configuration object and returns a CerebroConfig object
 * that represents the settings store.
 *
 * @class Cerebro
 * @constructor
 * @param {Array} config List of configuration objects
 * @param {Object} [options]
 * @param {Object} [options.customEvaluators] - contains the list of custom evaluators {evaluator: function}
 * @param {Object} [options.poller] - contains the poller instance
 */
export declare class Cerebro<Flags extends Record<string, any> = Record<string, any>> {
    _config: any;
    _customEvaluators: any;
    constructor(config: ICerebroConfigEntry[], options?: ICerebroOptions);
    /**
     * Builds a config based on provided context
     * @param  {Object} context
     * @param  {Object} [options]
     * @param  {Object} [options.overrides] - contains the list of overrides {setting: 'value'}
     * @return {CerebroConfig}
     */
    resolveConfig(context: ICerebroContext, options?: ICerebroConfigOptions): ICerebroConfig<Flags>;
    /**
     * Parses the dehydrated object for use on the client.
     * Intended to be used on the client.
     * The input of this function is expected to be the output of dehydrate().
     *
     * @param {JSON} dehydratedObject The output of #dehydrate()
     * @return {CerebroConfig} A usable instance of CerebroConfig
     */
    static rehydrate<Flags extends Record<string, any> = Record<string, any>>(dehydratedObject: string): ICerebroConfig;
    private _handleConfigUpdate;
    private _preprocess;
    private _build;
    /**
     * Verifies that custom evalutors are functions and come wrapped in an object.
     * Throws an error if the custom evaluator is not in the right format.
     *
     * @private
     * @param {Object} customEvaluators The object to be evaluated
     */
    private _validateCustomEvaluators;
}