I made a breaking change:

[jamestalmage]

When I made this change, I thought I was modifying a private API.

Unfortunately AssertionVisitor is exposed publicly and used in babel-plugin-espower.

The only way this is a problem is if people have pinned to babel-plugin-espower@>=1.0.0 <1.1.0 (i.e. a Tilde Range)

It is probably worth releasing [email protected] that pins espower@>=1.0.0 <=1.2.0.

This probably has implications for empower as well.

[twada]

@jamestalmage Oh nice catch. I should be more aware of argument ordering.
That was my mistake. So sorry.
Now working on 1.0.1 release.

[twada]

Released babel-plugin-espower 1.0.1. Thanks!