eslint-plugin-react VS typescript-eslint

> [1] https://github.com/jsx-eslint/eslint-plugin-react/blob/maste...

From what I remember, being able to pass children as a prop is considered a side-effect of an implementation detail, that breaks the expected abstraction. There really isn't any reason to use it, and I think there's a chance it may even confuse the virtual dom diffing?

Also this would prevent you from accidentally doing both at once:

  Is it me?}>

I try to focus on the issues rather than individuals, but the root of the problems in the listed eslint plugin libraries points to ljharb.

If you do some simple digging into these libraries, you will find that these types of commits are quite common within them.

https://github.com/jsx-eslint/eslint-plugin-react/commit/e1d...

https://github.com/jsx-eslint/jsx-ast-utils/commit/bad51d062...

https://github.com/jsx-eslint/eslint-plugin-jsx-a11y/commit/...

He would rather see the download count of these polyfill libraries https://github.com/ljharb/ljharb#projects-i-maintain increase, compared to assessing the health of the JavaScript ecosystem.

An obvious pick for React projects, but eslint-plugin-react along with their plugin:react/recommended rule set is a must. This will give you some sensible rules such as requiring a key to be specified in JSX arrays. eslint-config-airbnb is another good (if a bit loose) base rule set on top of eslint-plugin-react to start from.

If you already have the eslint-plugin-react installed, you can enable the following rule.

You can also add ESLint now (props to @femincan for the suggestion). It comes with recommended settings for these plugins: typescript, prettier, react, react-hooks, jsx-a11y.

Also for what it’s worth, there’s a React ESLint code rule that can enforce this behavior either way for Component props - I’m not in front of a code base atm, but I wonder if my preference for the syntax above is influenced by a popular linting preset like AirBnB which enforces this rule? https://github.com/jsx-eslint/eslint-plugin-react/blob/master/docs/rules/jsx-curly-brace-presence.md

The missing piece is on this page, in a small note at the end of the page: the eslint rule to disallow missing React when using JSX.

Thanks for weighing in, that's good to know. After wondering if this could be auto-refactored, I came across https://github.com/jsx-eslint/eslint-plugin-react/blob/maste..., will definitely have to give that (with `--fix`) a try in the new year and see if I can get the team on board! – desire for typescript being a compelling factor.

Personally I do like the non-destructured `props.abc` throughout component code, really helps clarify at a glance where something is coming from, whether it's locally or externally defined, etc. Code style is an endless exercise in compromises/opinions though, even _with_ tools like eslint and prettier.

eslint-plugin-react react/hook-use-state

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):