![]() ![]() You can then add this command to your NPM scripts passing in your src folder as a glob to it instead of a single file. The available options can be found on the website. These can be added to a .prettierrc file in the root folder of your project. You can configure other options that you want prettier to work with, but usually, a configuration file is used for it. This will pretty print the index.js file in its place itself. ![]() After installation succeeds, to run against a specific file, all you need to do now is run the command yarn prettier -write index.js. Prettier recommends installing the exact version in your project since they tend to introduce stylistic changes in patch releases. (yarn add prettier -dev -exact or npm install -save-dev -save-exact prettier). You need to install the prettier CLI first. Other editor level configuration can be set here too. And it just worked! (I also have the "prettier.singleQuote": true since I prefer that. After that, I put in a preference in my user settings ("editor.formatOnSave": true). For Visual Studio Code, it just required a download from the marketplace. There are the following levels at which you can use Prettier:įor installing it in your IDE/Editor, go to the integrations page on the website and download the corresponding plugin. How do I set it up?Īs mentioned, Prettier automates the process of formatting the entire code base. The properties that are respected are: indent_style, indent_size/tab_width and max_line_length. Prettier version 1.9 onwards reads from editorconfig if it is present. You can integrate prettier with ESLint to have a win-win combo. On the other hand, Prettier is only concerned about formatting the file (maximum length, mixed tabs and spaces, quote style etc.). This is one of the most commonly asked questions and the brief answer is that ESLint is a code quality tool (no unused variables, no global variables, prefer promises etc.). ![]() If you want to take it for a spin, use the playground to play with it. For you, everything gets formatted magically and you do not have to worry about it.įor example: foo(reallyLongArg(), omgSoManyParameters(), IShouldRefactorThis(), isThereSeriouslyAnotherOne()) So it ensures that there would not be any breaking changes to the code that was written. Under the hood, all the javascript code is converted into Abstract Syntax Tree and then formatted back. It takes in all your code, removes all formatting, and re-formats the code according to its style guidelines. So, after setting up prettier, you no longer need to argue with coworkers about code formatting rules, semicolons, line breaks etc. Prettier is an opinionated code formatter and it automates the process of formatting the entire code base. So it helps you overcome formatting fatigue with a very easy setup. Wasting time formatting your code is a monotonous task and Prettier has been designed to solve this problem of wasting time on it. Even if you spend a few days making everything consistent, some other developer might check-in their changes or disable some flag to quickly get their code in. prettier.This post was originally published at If you have been programming for a while, you would be familiar with the hassles of writing clean code and maintaining consistency across a project on some specific code style guidelines. The reason it uses filepath instead of using something like file extension is because the Prettier config file can have overrides that are triggered based on the filepath. This wasn't stated clearly enough for me to understand in the docs. It turns out that if you pass the filepath option, Prettier will infer the parser option for you. I had always struggled to figure out which parser to use as Prettier doesn't seem to list the defaults (especially when trying to format JSON). # CLI works as expectedĪfter a lot of trial and error, I was finally able to figure out the required steps in order to get it to work.įirst, using the Node API requires that you pass the parser option. However, when I would try to run the Node API on the same file, it wouldn't quite format the code in the same way. What I mean by that is when running the Prettier CLI with a Prettier config file, it would format the code as expected. For some time now I've struggled to get the Prettier Node API to format code in the same way as the CLI does. ![]()
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