/**
 * Replace items in Buffer based on given object
 * Ex: formatMessage(Buffer.from("Hello {World}!"),{"World":"Joe"}) => Hello Joe!
 * @param str Buffer to be replaced
 * @param params Object with items to replace
 * @returns Buffer with items replaced
 */
export declare function formatMessage(str: Buffer, params: {
    [key: string]: unknown;
}): Buffer;