Add tests for our complex TypeScript typing

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#831 opened on Mar 6, 2018 3 comments 0 reactions 0 assignees View on GitHub

code maintenance help wanted ready

Description

We should add some tests to make sure our typing works. My guess is that this broke in the recent Flow upgrade.

┆Issue is synchronized with this [Jira Task](https://mozilla-hub.atlassian.net/browse/FP-709)

This issue has not been assessed yet.