If a non-constructable value is returned, then an error is thrown?

[trusktr]

Does this mean decorators can still return plain functions? f.e.

function log(Class) {
  return function () {
    console.log('instantiating class')
    return new Class()
  }
}

@log
class Foo {}

new Foo() // logs "instantiating class"

?

Or does it have to be a class?

[pzuraq]

Class decorators must return a callable value, it does not need to be constructable, per the spec: https://arai-a.github.io/ecma262-compare/?pr=2417&id=sec-applydecoratorstoclassdefinition

[trusktr]

Oh ok. So then any function is ok to return, not just anything callable with new? If so, the README could use an update.

[pzuraq]

Yes, and proxies are also ok to return, as they can intercept calls.

[trusktr]

PR #483

[pzuraq]

Closing as this was addressed by #483