vm argument missing from implemented "missing" handler function

[ijabit]

vue & vue-i18n version

ex: 2.5.17, 8.2.1

Steps to reproduce

Implement the missing function like this:

missing: function (loc: Locale, key: Path, vm?: Vue) {
  console.log(loc, key, vm);
}

What is Expected?

The vm argument should be populated.

What is actually happening?

The vm argument is not populated.

I believe the bug is here:
https://github.com/kazupon/vue-i18n/blob/dev/src/index.js
On line 358: return this._root.t(key, ...values)
It doesn't include the host parameter (which is supposed to get mapped to the vm argument in my function.

[ijabit]

@kazupon this fix was released to v8.3.0 right? If so, I updated the package and this bug is still there.