eslint-plugin-unicorn VS putout

XO. This feels like the Black of Typescript linting. XO has styles for everything and is very opinionated. This can be nice, because it takes a lot of code style decisions off of your plate. But beware it can be cumbersome to implement in the middle of a project because it will require extensive reformatting. In lieu of XO, I found Unicorn opinionated enough and more immediately useful.

Recently, we chose to add the Unicorn plugin, which contain dozens of ESlint rules. It can feel overwhelming at first because it triggers hundreds of errors. Fortunately, we discovered eslint-nibble: a command line tool that helps adding rules one by one with a graphical interface.

I recently scanned out codebase with https://github.com/sindresorhus/eslint-plugin-unicorn/blob/main/docs/rules/prefer-set-has.md and found many instances of potential "accidentally quadratic" uses of array.includes instead. gas a nice autofix to convert to set. there are some fun and sometimes useful lint rules out there...

There’s an ESLint rule for that (albeit in a plugin)

Many popular eslint configs have even introduce rules to warn on its usage for these very reasons.

eslint-plugin-unicorn

I find eslint-plugin-unicorn package pretty useful for updating old code. With IE11 dead and NodeJS v12 LTS sunsetting soon, it's a brave new world.

Due to its plugin-first architecture, the initial API is kept as lean as possible, preventing unnecessary bloat and allowing the developer the choice of extension. Some plugin rules are also smaller than those available in ESLint, e.g., the debugger rule. We can also use Putout with ESLint by allowing Putout to handle code transformations while ESLint handles any formatting broken after the code transformation. We can use the plugin eslint-plugin-putout to help with this integration.

🐊 Pluggable and configurable code transformer with built-in ESLint, Babel plugins support for js, jsx typescript, flow, markdown, yaml and json