Function flatten

flatten<T>(arr: T[], depth??: number): unknown[]
Flattens an array up to the specified depth

Example
```
flatten([1, [2], 3, 4]); // [1, 2, 3, 4]
```
Example
```
flatten([1, [2, [3, [4, 5], 6], 7], 8], 2); // [1, 2, 3, [4, 5], 6, 7, 8]
```
Type Parameters
- T
Parameters
- arr: T[]
- Optional depth: number = 1
Returns unknown[]
- Defined in array/flatten/index.ts:10

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