* 递归调用 * 将全局变量设置在参数中 * 函数包裹，延缓执行 # Usage ``` javascript import flatten from 'array-flattened' flatten([1, 2, 3, [4], [5, ['a']]]); // => [1, 2, 3, 4, 5, 'a'] ``` ### Author haoj ### reference arr-flatten
javascript
import flatten from 'array-flattened'
flatten([1, 2, 3, [4], [5, ['a']]]);
// => [1, 2, 3, 4, 5, 'a']
``