Targeting Pre-ES5 Engines

[zenparsing]

It may be useful for those wanting to run es6now-translated code on IE8 to translate some ES5 syntax additions:

• IdentifierName syntax:

  x.delete("foo")

• Trailing commas in array and object literals:

  [a, b, c,];
  ({ a: 1, b: 2, });

Should we translate these as an option?

[zenparsing]

Recent changes (the addition of the Map shim and renaming _es6now.Class to _es6now.class) have created a requirement on an ES5 engine.

For the next-next version, we'll look into providing an option to translate the features above and restore functionality for IE8.

[zenparsing]

Won't fix for now.