deep_copy.js

'use strict';

var flattenArray = require( './../lib' );

var opts;
var arr;
var out;

arr = [ 1, [2, [3, [4, [ 5 ], 6], 7], 8], 9 ];

opts = {
	'depth': 2,
	'copy': true
};

out = flattenArray( arr, opts );
console.log( out );
// => [ 1, 2, 3, [4, [ 5 ], 6], 7, 8, 9 ]

console.log( arr[1][1][1] === out[3] );
// => false