Add isOfType helper

Use case - a redux saga that is run when two actions dispatched, one with payload, other w/o payload

const fetchEntity = createActionCreator('FETCH', resolve => (id: string) => resolve(id));
const reFetchEntity = createActionCreator('RE_FETCH')

function* watchFetchEntity() {
  yield takeLastest([getType(fetchEntity), getType(reFetchEntity)], fetchEntitySaga);
}

function* fetchEntitySaga(action: ActionType<typeof fetchEntity> | ActionType<typeof reFetchEntity>) {
  const id = isOfType(getType(fetchEntity), action) 
    ? action.payload // id from fetchEntity
    : yield select(selectEntityId)
}

[the-dr-lazy]

This feature will release in version 3.1.0. Thanks to @kotarella1110 and @nikolay-borzov.

[the-dr-lazy]

🎉 This issue has been resolved in version 3.1.0 🎉

The release is available on:

• GitHub release
• npm package (@next dist-tag)

Your semantic-release bot 📦🚀