var baseIteratee = require('./_baseIteratee'),
    baseWhile = require('./_baseWhile');

/**
 * Creates a slice of `array` excluding elements dropped from the beginning. 
 * Elements are dropped until `predicate` returns falsey.  The predicate is
 * invoked with three arguments: (value, index, array). 
 *
 * @static
 * @memberOf _
 * @since 3.0.0
 * @category Array
 * @param {Array} array The array to query. 
 * @param {Function} [predicate=_.identity] The function invoked per iteration. 
 * @returns {Array} Returns the slice of `array`. 
 * @example
 *
 * var users = [
 *   { 'user': 'barney',  'active': false },
 *   { 'user': 'fred',    'active': false },
 *   { 'user': 'pebbles', 'active': true }
 * ];
 *
 * _.dropWhile(users, function(o) { return ! o.active; });
 * // => objects for ['pebbles']
 *
 * // The `_.matches` iteratee shorthand. 
 * _.dropWhile(users, { 'user': 'barney', 'active': false });
 * // => objects for ['fred', 'pebbles']
 *
 * // The `_.matchesProperty` iteratee shorthand. 
 * _.dropWhile(users, ['active', false]);
 * // => objects for ['pebbles']
 *
 * // The `_.property` iteratee shorthand. 
 * _.dropWhile(users, 'active');
 * // => objects for ['barney', 'fred', 'pebbles']
 */
function dropWhile(array, predicate) {
  return (array && array.length)
    ?  baseWhile(array, baseIteratee(predicate, 3), true)
    : [];
}

module.exports = dropWhile;
