Scenario: I want to integrate Prettier in our code base which is currently using ESLint (for .js and .scss both). The project is using gulp.

It doesn't feel quite right to me to use ESLint, I wonder if it would be better to use Stylelint or Sass Lint instead.

I completed integrating ESLint + Prettier, Planning to do the same with [ Stylelint || Sasslint || EsLint] + Prettier.

And have gulp 'fix' on file save (Watcher).

Any recommendation is appreciated.

I think you scan skip MongoDB for now and focussing on creating web component with Reactjs or Vue, I would also recommend to use TypeScript for type hinting support.

For styling, learn CSS first then upgrade to SASS/SCSS or LESS (pick one as mostly same concept) to make CSS more maintainable.

Also to improve your skill on both sectors, install linters if available. For TypeScipt, there are TSLint and for styling, i think there are Stylint. Linter will help you adapt to make a clean code and understand how other peoples usually styled their code.

you don't actually have to choose between these tools as they have vastly different purposes. i think its more a matter of understanding how to use them.

while eslint and stylelint are used to notify you about code quality issues, to guide you to write better code, prettier automatically handles code formatting (without notifying me). nothing else.

prettier and eslint both officially discourage using the eslint-plugin-prettier way, as these tools actually do very different things. autofixing with linters on watch isnt a great idea either. auto-fixing should only be done intentionally. you're not alone though, as a lot of devs set this up wrong.

i encourage you to think about what problem you're trying to solve and configure accordingly.

for my teams i set it up like this:

• eslint, stylelint, prettier locally installed for cli use and ide support
• eslint config prettier (code formatting rules are not eslints business, so dont warn me about it)
• vscode workspace config: format on save
• separate npm scripts for linting, and formatting
• precommit hooks (husky)

so you can easily integrate with gulp. its just js after all ;)