/** ## `empty_or` : `ArrayLike`长度为0则进行替换
@example
```ts
empty_or([1,2,3], 'empty') // [1,2,3]
empty_or([], 'empty') // 'empty'
```
@category Collect
  */
export declare const empty_or: <T extends ArrayLike<unknown>, O>(arrlike: T, or: O) => O | T;
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