This certainly makes for a small diff since there are no code changes beyond installing npm packages. I think, though, that this makes it irrelevant, and also introduces this linting error:

Compiled with warnings.

./src/index.js
  Line 9:10:  'T' is defined but never used  no-unused-vars

I don't think we gain anything here; revoking this diff would only remove dependencies and not any code.

Going forward:

1. Test plan for cashtab changes will probably always be npm install && npm start followed by npm test
2. Code change should involve some behavior change, otherwise if we need to revoke the behavior-change diff, we might need to dig this one up too

Please use fbt. Our other stuff use fbt.