Function optionOk

optionOk<E, T>(res: Result.Result<E, T>): Option.Option<T>
Takes the success value as an optional if the result is an Ok, otherwise returns None.
Type Parameters
- E
- T
Parameters
- res: Result.Result<E, T>
  The source result.
Returns Option.Option<T>
The success value if exists.

Examples
Example
```
expect(optionOk(ok(2))).toStrictEqual(some(2));
expect(optionOk(err("nothing left"))).toStrictEqual(none());
```
- Defined in src/result.ts:537