Top-level declarations in .d.ts files must start with either a 'declar' or 'export' - tests failing

[PingItIn]

Hello,
we are trying to use your library in our project. So far it works very well, thanks! However, when we "build" our typescript application we get the following error:

node_modules/dictation_support/dist/index.d.ts:295:1 - error TS1046: Top-level declarations in .d.ts files must start with either a 'declare' or 'export' modifier.

The reason for this error is, that the enum Command{...} doesn't have either an export nor a declare. When adding export/declare temporarily it works, so I wanted to create a PR, to fix the issue.

However, before creating the PR, I need run the tests which I can't get to work. I get the same issues as already described in this issue comment:
#17 (comment)

Do you have an idea why we run into these issues with the test? Would you be able to add export/declare to the Command enum?