Champion: @michaelficarra
Spec repo: https://github.com/michaelficarra/optional-catch-binding-proposal/
Spec text: https://michaelficarra.github.io/optional-catch-binding-proposal/
Stage: -1 :)

Moved to Stage 3 at the July meeting https://github.com/tc39/agendas/blob/master/2017/07.md

Stage 4 at May 2018 meeting

This hasn't been presented to the committee as of this writing, but will be at the July meeting. If it receives broad support it is likely to advance quickly, in my personal estimation.

It allows the binding to be omitted from a catch clause:

try {
  throw 0;
} catch {
  doSomethingWhichDoesntCareAboutTheValueThrown();
}

or

try {
  throw 0;
} catch {
  doSomethingWhichDoesntCareAboutTheValueThrown();
} finally {
  doSomeCleanup();
}

This will need a (very small) change in Babylon, including a change to the AST (marking the catch binding as optional), and then a very small change to Babel.

This would make a great first contribution, I think!

UPDATE:

• Babylon PR - Add optionality to catch bindings babylon#634
• Babel PR - Add optionality to catch bindings babel#5956