/**
 * Minify all the given JSON files in place. It minifies the files in parallel.
 *
 * @param files An array of paths to the files
 * @param hasComment A boolean to support comments in json. Default `true`.
 * @returns {Promise<void>} Returns a void promise that resolves when all the files are minified
 * @throws {Promise<string | Error>} The promise is rejected with the reason for failure
 */
export declare function minifyFiles(files: readonly string[], hasComment?: boolean): Promise<void>;
/**
 * Spawn minijson with the given arguments
 *
 * @param args An array of arguments
 * @returns {Promise<string>} Returns a promise that resolves to stdout output string when the operation finishes
 * @throws {Promise<string | Error>} The promise is rejected with the reason for failure
 */
export declare function spawnMinijson(args: string[]): Promise<string>;
/**
 * Minify the given JSON string
 *
 * @param jsonString The json string you want to minify
 * @param hasComment A boolean to support comments in json. Default `true`.
 * @returns {Promise<string>} The minified json string
 * @throws {Promise<string | Error>} The promise is rejected with the reason for failure
 */
export declare function minifyString(jsonString: string, hasComment?: boolean): Promise<string>;