vandy

/**
 * Moves to the end all "falsy" items within the array (this).
 *
 * Could be used for extending Array.prototype:
 * Array.prototype.separate = separate;
 *
 * @param [test] {Function} - function to determine whether an item is falsy
 *      if not provided, "falsy" is Boolean(value) except zero.
 * @returns {number} - first "falsy" item index
 */

vandy

/**
 * Compares a date with today in the client's time zone. The comparison is day-wise,
 * so that all dates since today's midnight till the next midnight are considered "today".
 * Yesterday and tomorrow are separate from the past and future.
 *
 * @param dateRepresentation {string|number|Date}
 * @returns {number}
 *      +2 - date is in the future (after tomorrow)
 *      +1 - tomorrow
 *      0 - today