var baseFlatten = require('./_baseFlatten');

/** Used as references for various `Number` constants. */ var INFINITY = 1 / 0;

/**

* Recursively flattens `array`.
*
* @static
* @memberOf _
* @since 3.0.0
* @category Array
* @param {Array} array The array to flatten.
* @returns {Array} Returns the new flattened array.
* @example
*
* _.flattenDeep([1, [2, [3, [4]], 5]]);
* // => [1, 2, 3, 4, 5]
*/

function flattenDeep(array) {

var length = array == null ? 0 : array.length;
return length ? baseFlatten(array, INFINITY) : [];

}

module.exports = flattenDeep;