[API reference](https://evolu.dev/docs/api-reference) › [@evolu/sqlite-wasm](https://evolu.dev/docs/api-reference/sqlite-wasm) › [c-api](https://evolu.dev/docs/api-reference/sqlite-wasm/c-api) › SqliteLockLevel

```ts
type SqliteLockLevel =
  | typeof SQLITE_LOCK_NONE
  | typeof SQLITE_LOCK_SHARED
  | typeof SQLITE_LOCK_RESERVED
  | typeof SQLITE_LOCK_PENDING
  | typeof SQLITE_LOCK_EXCLUSIVE;
```

Defined in: [packages/sqlite-wasm/src/Constants.ts:616](https://github.com/evoluhq/evolu/blob/bc4578a260dd15d5bbf94b83765ca05984d194cb/packages/sqlite-wasm/src/Constants.ts#L616)

A file lock level of the VFS xLock and xUnlock methods.