Function nullable

nullable<T extends BSBType>(type: T): T
Mark a type as nullable. Nullable fields can have null values in addition to their defined type.
Type Parameters
- T extends BSBType
Parameters
- type: T
Returns T
Example
```
const UserSchema = bsb.object({
  lastLogin: nullable(bsb.datetime('Last login time')),
});
```
- Defined in src/interfaces/schema-types.ts:554