interface IsAscii {
    /** **Default:** `false` */
    onlyPrintable?: boolean;
}
/**
 * Check if all characters of the string are in the ASCII table (%d0-%d127).
 *
 * If you enable `onlyPrintable` valid characters will be limited to
 * printable characters from the ASCII table (%32-%d126).
 *
 * Empty returns `false`.
 */
export declare function isAscii(str: string, params?: IsAscii): boolean;
export {};