[API reference](https://evolu.dev/docs/api-reference) › [@evolu/common](https://evolu.dev/docs/api-reference/common) › [Set](https://evolu.dev/docs/api-reference/common/Set) › deleteFromSet

```ts
function deleteFromSet<T>(set: ReadonlySet<T>, item: T): ReadonlySet<T>;
```

Defined in: [packages/common/src/Set.ts:151](https://github.com/evoluhq/evolu/blob/e7144e2bbe9069362b62dec1b64a8aa922b8f1b0/packages/common/src/Set.ts#L151)

Returns a new readonly set with an item removed.

If the item doesn't exist, returns a new set with the same elements (still a
new reference for change detection).

### Example

```ts
deleteFromSet(new Set([1, 2, 3]), 2); // Set {1, 3}
deleteFromSet(new Set([1, 2]), 5); // Set {1, 2} (new reference)
```