DEV Community πŸ‘©β€πŸ’»πŸ‘¨β€πŸ’»

DEV Community πŸ‘©β€πŸ’»πŸ‘¨β€πŸ’» is a community of 963,673 amazing developers

We're a place where coders share, stay up-to-date and grow their careers.

Create account Log in
Gyandeep Singh
Gyandeep Singh

Posted on • Updated on

Coding with TypeScript, Prettier and ?

Recently I started working on a new web app project and we used TypeScript on both front-end and the server. TypeScript was a game changer just from the types.

We need static code analysis and code formatting to make the code readable, correct and <whatever>. Here is how I solved this in my code setup:

  • Code analysis -> TypeScript compiler
  • Code formatting -> Prettier

That's it. Using pre-commit hooks it made my life so easy that i don't even have to think about code formatting as its done for me and consistent across the board. All I have to think about is the actual code.

Question: Do I need ESlint/TSLint to check my code for non-style issues?

Because typescript compilers already does that for you.

I am just asking because I have not felt the need for it and I know everybody uses it. So i am thinking what am I missing?

Please share your thoughts :)

Top comments (6)

Collapse
 
nickytonline profile image
Nick Taylor

If you have a TypeScript project you should be using tslint. Choose your tslint config and then add the tslint prettier config as well. Here's a good article that talks about it.

You didn't mention it, but I'm curious what you use for pre-commit hooks. Are you using husky? If so, it works well with lint-staged.

You can run anything. lint-staged compliments this package very well. Here's an example, github.com/nickytonline/generator-...

Collapse
 
gyandeeps profile image
Gyandeep Singh Author

Thats my basic question on why do I need tslint? Typescript parser helps me detect all the code issues and prettier styles the code.

Collapse
 
nickytonline profile image
Nick Taylor

Prettier formats the code and the TypeScript compiler type checks, but neither are linters. Prettier is linter-like in the sense, it does the linting formatting rules part. However, for example TS nor Prettier will enforce using const or the no-console linting rules or how a variable is written, e.g. camelCase vs. PascalCase. This is why I'd recommend also using tslint.

Thread Thread
 
gyandeeps profile image
Gyandeep Singh Author

I agree. I Have not made up my mind yet, thats why I am trying to understand what people do in similar project setup. Then i can also follow the same path.

Thread Thread
 
nickytonline profile image
Nick Taylor • Edited on

Update to this. I use eslint with TypeScript now. If you want to see my setup, check out

nickytonline / iamdeveloper.com

Source code for my web site iamdeveloper.com

iamdeveloper.com

Netlify Status

Hey there, I'm Nick and this is my site's source code. This site started off as a clone of the Netlify CMS Gatsby Starter (check it out!). Since then, I've tweaked it a lot and converted the codebase to TypeScript.

Feel free to peruse the code and/or fork it. πŸ˜‰

Thanks to all the wonderful projects that made it possible to build this blog.

To get up and running:

  • clone the repository by running git clone git@github.com:nickytonline/www.iamdeveloper.com.git or git clone https://github.com/nickytonline/www.iamdeveloper.com.git
  • run npm install
  • run npm run develop to get up and running with the Gatsby development server.
  • Since the project uses Babel and not TypeScript as the compiler, a separate process is required to run type checking. Open another terminal and run npm run type-check:watch
  • If you're curious about why the Netlify CMS admin is…

Also, here's a great post from @robertcoopercode about TypeScript and ESLINT.

Thread Thread
 
robertcoopercode profile image
Robert Cooper

Woot woot thanks for the shoutout.

@gyandeeps and I have been discussing whether using a linter is at all useful when combined with TypeScript. He doesn't seem convinced, haha.

This post blew up on DEV in 2020:

js visualized

πŸš€βš™οΈ JavaScript Visualized: the JavaScript Engine

As JavaScript devs, we usually don't have to deal with compilers ourselves. However, it's definitely good to know the basics of the JavaScript engine and see how it handles our human-friendly JS code, and turns it into something machines understand! πŸ₯³

Happy coding!