no-sparse-arrays

禁止使用稀疏数组

稀疏数组包含空槽，比如['ranwawa', , 'zhangshan']的长度是3,但是在forEach遍历的时候会自动跳过空槽,就导致了行为上的不一致,容易误导小白。

干掉空槽

const foo = ['ranwawa', , 'zhangshan'];

const foo = ['ranwawa', , 'zhangshan'];

const foo = ['ranwawa', 'zhangshan'];

const foo = ['ranwawa', 'zhangshan'];

no-sparse-arrays ​