/**
 * Copyright 2019-2022, 2024, Optimizely
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
import { LoggerFacade } from '../logging/logger';
import { OptimizelyConfig } from '../shared_types';
import { DatafileManager } from './datafile_manager';
import { ProjectConfig } from './project_config';
import { Service, BaseService } from '../service';
import { Consumer, Fn, Transformer } from '../utils/type';
export declare const NO_SDKKEY_OR_DATAFILE = "sdkKey or datafile must be provided";
export declare const GOT_INVALID_DATAFILE = "got invalid datafile";
import { Platform } from '../platform_support';
interface ProjectConfigManagerConfig {
    datafile?: string;
    jsonSchemaValidator?: Transformer<unknown, boolean>;
    datafileManager?: DatafileManager;
    logger?: LoggerFacade;
}
export interface ProjectConfigManager extends Service {
    setLogger(logger: LoggerFacade): void;
    getConfig(): ProjectConfig | undefined;
    getOptimizelyConfig(): OptimizelyConfig | undefined;
    onUpdate(listener: Consumer<ProjectConfig>): Fn;
}
/**
 * ProjectConfigManager provides project config objects via its methods
 * getConfig and onUpdate. It uses a DatafileManager to fetch datafile if provided.
 * It is responsible for parsing and validating datafiles, and converting datafile
 * string into project config objects.
 * @param {ProjectConfigManagerConfig}    config
 */
export declare const LOGGER_NAME = "ProjectConfigManager";
export declare class ProjectConfigManagerImpl extends BaseService implements ProjectConfigManager {
    private datafile?;
    private projectConfig?;
    private optimizelyConfig?;
    jsonSchemaValidator?: Transformer<unknown, boolean>;
    datafileManager?: DatafileManager;
    private eventEmitter;
    constructor(config: ProjectConfigManagerConfig);
    setLogger(logger: LoggerFacade): void;
    start(): void;
    makeDisposable(): void;
    private handleInitError;
    private handleDatafileManagerError;
    /**
     * Handle new datafile by attemping to create a new Project Config object. If successful and
     * the new config object's revision is newer than the current one, sets/updates the project config
     * and emits onUpdate event. If unsuccessful,
     * the project config and optimizely config objects will not be updated. If the error
     * is fatal, handleInitError will be called.
     */
    private handleNewDatafile;
    getConfig(): ProjectConfig | undefined;
    getOptimizelyConfig(): OptimizelyConfig | undefined;
    /**
     * Add a listener for project config updates. The listener will be called
     * whenever this instance has a new project config object available.
     * Returns a dispose function that removes the subscription
     * @param  {Function} listener
     * @return {Function}
     */
    onUpdate(listener: Consumer<ProjectConfig>): Fn;
    stop(): void;
}
export declare const __platforms: Platform[];
export {};
