Add `.finally`

[trufae]

Bluebird already provides the .finally logic which in some situations makes the code cleaner. it will be good if co can have it too.

[kyeotic]

Javascript already has a finally. Just use it

co(function * () {
  try {
   // try to work
  } catch (e) {
  // handle your errors
  } finally {
    // cleanup
  }
})

[luizamboni]

Javascript already has a finally. Just use it

Yes, all of us, know this, but the intend to use a module like co is invert this control...
to can use a finally in a generator without build a other generator method to wrap try, catch and finally

The same logic can be applied from catch too.. "javascript alreay has a catch" then why co need have one ?
Make sense ?

example:

const obj = {
  insertInDb: function*(attrs){
     //without try ...
  }
}

co(obj.insertInDb(attrs)).catch(...).finally(..close connections etc)

[kyeotic]

Co doesn't add a catch either, because you don't need one. You use the js keywords

const obj = {
  insertInDb: function*(attrs){
     //without try ...
  }
}

co(function * () {
  try {
    yield obj.insertInDb(attrs)
  } catch e() {
    ...
  } finally{ 
    ..close connections etc
  }
})

[kyeotic]

The finally in this line

co(obj.insertInDb(attrs)).catch(...).finally(..close connections etc)

Would have to be on the Promise.prototype. co returns Promises.

[vedmant]

You can use .then() after .catch() it will work as .finally() https://stackoverflow.com/a/35999141/1753349