import { Configuration } from 'webpack';
export declare function isDevelopment(): boolean;
/**
 * Smartly merge webpack configuration. Basic configuration is merged by default.
 * @param configs
 * @example
 * // Support TypeScript and CSS.
 * module.exports = merge({
 *     css(),
 *     ts(),
 *     { ...others },
 * });
 */
export declare function merge(...configs: Configuration[]): Configuration;
export declare function checkDependency(name: string): void;
/**
 * Return paths to help webpack resolve modules or loaders.
 * @param request - Start point to find paths.
 * @private
 */
export declare function getResolveModules(request: string): string[];
/**
 * This function doesn't really "do anything" at runtime, it's just the identity function for typing.
 * @param config
 */
export declare function createWebpackConfiguration<T extends Configuration>(config: T): Configuration & T;