Fix Emit Decorator with multiple arguments

[mugi-uno]

When using Emit with multiple arguments, it will not work properly.
Maybe because the arguments are passed as an array

b9f0ba8#diff-a542f5e3653e6b2d1bd03489368849b9R269

[WolfgangKurz]

I think

this.$emit(emitName, returnValue)

should pass args together like below

this.$emit(emitName, returnValue, ...args)

Isn't it?

[mugi-uno]

@WolfgangKurz
Yes, that pattern also needed to be corrected.

How about this?
5238ee8

[WolfgangKurz]

Yes, we need args anyway, and that solution also very good.

Thanks for your response and fixing.

[kaorun343]

Thanks for your PR!!!
Could you fix this?

[gmoneh]

Hi. I don't know if you guys noticed, but PR #291 broke the emit decorator as is defined in the documentation. Now, if the function returns a value, the arguments received by the function are not emitted as arguments of the event, as the documentation states and as used to work before.
Does this PR fix that?

[mugi-uno]

Yes. I intend to do so.

At least the test I added in this PR should work with code prior to #291.

[MrJmpl3]

Nice work everyone, I really forgot that the arguments went along with the $emit.

Sorry about the problems.

PD: I think in testing, missing when you have a one argument and return that argument only (That is why I created the PR #291 ).

@Component
class ChildComponent extends Vue {
 count = 0

 @Emit()
 count(n: number) {
  return n;
 }
}