/**
 * Checks whether a value is a string and contains at least one non-whitespace character
 *
 * @example
 * is.notBlank(''); // false
 * is.notBlank('    '); // false
 * is.notBlank('test'); // true
 * is.notBlank({toString: function() { return 'test'; }}); // false - since values are not converted to strings
 */
declare function notBlank(value: any): boolean;
export default notBlank;