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no-sparse-arrays.md

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no-sparse-arrays

禁止在数组中出现连续的逗号。

数组中连续的逗号多是书写错误。本规范能辅助找出这种书写错误。若有必要应该显示的写入 undefined

const bar = [1, , 2];
const foo = [1, 2];
const bar = [1, undefined, 2];