[mhink]

Hah! Thanks for the link- I discovered this gem just now in their list of comparisons to JS syntax:

  Javascript    | Reason
  --------------+----------------------------
  const x = y;  | let x = y;
  let x = y;    | reference cells
  var x = y;    | No equivalent (thankfully)

[vmasto]

:) Yeah, unfortunately JavaScript can only be improved by educating people not to use the horrible parts (rather than fixing/deprecating them which is not possible). const and let were extremely necessary.