genemichaels VS typescript-eslint

Python and JavaScript have similarly good formatters (as long as your idiot colleagues don't insist on using yapf instead of Black, despite yapf producing non-deterministic output!). In fact I would say Rust is probably behind Prettier in terms of auto formatting. The rustfmt output is less pretty (subjective I know), the devs have made several strange decisions and it seems to be semi-abandoned (maybe partly because the devs were ... shall we say not as friendly and welcoming as the Rust community likes to bleat on about).

There are a couple of alternative formatters:

* https://github.com/andrewbaxter/genemichaels

There are alternatives to rustfmt: Prettier Rust and genemichaels

Gene Michaels, code formatter

I think we should all take inspiration from Gene Michaels and just start naming crates after random people.

Typescript-eslint can assist in this task. This tool helps identify all instances of unsafe any usage. Specifically, all usages of JSON.parse can be found and it can be ensured that the received data's format is checked. More about getting rid of the any type in a codebase can be read in the article Making TypeScript Truly "Strongly Typed".

> Only lint files that have changed? How hard that is?

Quite hard, especially since type-aware rules from e.g. https://typescript-eslint.io/ mean that changing the type of a variable in file A can break your code in file B, even if file B hasn't changed.

The article only touches this: when converting to TypeScript, `any` is useful, but in the end you don't want this type in your codebase - so don't forget to use typescript-eslint [0] and turn on those no-unsafe-* rules which guard against `any` leaking into your code.

[0] https://github.com/typescript-eslint/typescript-eslint

By convention, React components should be named in PascalCase. @typescript-eslint has the config we need, and though we can't specifically target React components, we can target variables (and set some other conventions while we're at it):