/**
 * Compare two strings ignore case with start and end limited
 *
 * @param a
 * @param b
 * @param aStart
 * @param aEnd
 * @param bStart
 * @param bEnd
 *
 * @example
 *
 *      compareSubstring('aBCd', 'AbcDE', 1, 3, 0, 2);  //=> 1
 *      compareSubstring('aBCd', 'AbcDE', 1, 3, 1, 3);  //=> 0
 *      compareSubstring('aBCd', 'AbcDE', 1, 3, 2, 4);  //=> -1
 */
export declare function compareSubstringIgnoreCase(a: string, b: string, aStart?: number, aEnd?: number, bStart?: number, bEnd?: number): number;
export default compareSubstringIgnoreCase;