fix(*): Fix compilation problems in my local environment

[schmidt-sebastian]

Fixing three TS type errors that show up in my local build environment.

Note that even with these fixed, I still can't get the tests to pass in my local environment.

[gauntface]

LGTM for messaging changes.

[sphippen]

The storage change is a little bit of a hack, but the typings for the "then" method are also wonky in this version of Typescript. I'm okay lying to the type system a little, but I'd add a comment explaining the cast is only there to make tsc happy.

[googlebot]

So there's good news and bad news.

👍 The good news is that everyone that needs to sign a CLA (the pull request submitter and all commit authors) have done so. Everything is all good there.

😕 The bad news is that it appears that one or more commits were authored by someone other than the pull request submitter. We need to confirm that they're okay with their commits being contributed to this project. Please have them confirm that here in the pull request.

Note to project maintainer: This is a terminal state, meaning the cla/google commit status will not change from this state. It's up to you to confirm consent of the commit author(s) and merge this pull request when appropriate.

[jshcrowthe]

This LGTM thanks all!