Inconsistent type strictness

[hazel-sudz]

There's multiple typescript tsc configs and tslint configs and not all of them play well together. For instance, my ts files sometimes compiled with my node projects but didn't compile with the default firebase typescripts setup.

Eventually, we need to setup a single typescript config so that everything compiles with the same rules and so that files can be used in any environment.

Not particularly important but annoying.