export declare class StringUtils {
    /**
     * Example:
     * ```
     *  StringUtils.format('hello {0}', 'world');
     * ```
     *
     * @param tpl
     * @param args
     */
    static format(tpl: string, ...args: any[]): string;
    static compileTpl(tpl: string, tplData: {
        [key: string]: any;
    }): string;
}