es-toolkit/docs/reference/array/uniq.md
2024-06-13 22:20:12 +09:00

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# uniq
Creates a duplicate-free version of an array.
This function takes an array and returns a new array containing only the unique values
from the original array, preserving the order of first occurrence.
## Signature
```typescript
function uniq<T>(arr: T[]): T[];
```
### Parameters
- `arr` (`T[]`): The array to process.
### Returns
(`T[]`): A new array with only unique values from the original array.
## Examples
```typescript
const array = [1, 2, 2, 3, 4, 4, 5];
const result = uniq(array);
// result will be [1, 2, 3, 4, 5]
```