![]() Super() must be called before using this. Use single quotes for strings except to avoid escaping.Įslint: quotes console.log( 'hello there') // ✓ ok console.log( "hello there") // ✗ avoid console.log( `hello there`) // ✗ avoid The best way to learn about standard is to just install it and give it a try on eslintrc.This is a summary of the standard JavaScript So, why use Prettier if I can also format my code using just ESLint In a short answer, because Prettier do the code formatting better than ESLint. Once the package has been installed, we need to update the extends section of your. Npm install -save-dev eslint-config-prettier - we'll use Prettier for code formatting concerns, and ESLint for code-quality concerns, so we need to turns off all ESLint rules that are unnecessary or might conflict with Prettier. We'll also install and use the Prettier VS Code extension later on, which already comes with Prettier package bundled in, but in general it's a good practice to add the npm package to your project directly as well, just in case some people won't use VS Code as their code editor of choice. Npm install -save-dev -save-exact prettier - add the prettier package as a dev dependency to your project. Read more on the VS Code Documentation page. NOTE: You may want to add these VS Code settings as Workspace settings instead of User settings, meaning that they will only apply to this specific project and not to any project you'll open in VS Code. eslintrc.json file in the root of your project, which looks like so (we'll modify it a little bit later on): ? Would you like to install them now with npm ? › No / YesĪs a result, you'll end up having a. Select "Yes" and hit enter:Ĭhecking peerDependencies of config that you have selected requires the following || ^6.8.0 || ^7.2.0 || ^3 || ^2.3.0 || ^1.7.0 You can also set your preferences in the options. It supports many languages and integrates with most code editors. # the final prompt here is where eslint will ask you if you want to install all the necessary dependencies. UPDATE: Paulo Ramos created an awesome shell script for this: Prettier Prettier is an opinionated code formatter. # question 8: ? What format do you want your config file to be in ? … # question 7 (we'll rely on Airbnb's JavaScript style guide here): ? Which style guide do you want to follow ? … # question 6: ? How would you like to define a style for your project ? … # question 5: ? Where does your code run ? … # question 4 (select "No", because we won't add TypeScript support for this project): ? Does your project use TypeScript ? › No / Yes # question 3: ? Which framework does your project use ? … # question 2: ? What type of modules does your project use ? … ❯ To check syntax, find problems, and enforce code style # question 1: ? How would you like to use ESLint ? … Here's a list of them, and the answers we'll need to choose ( ✔ and ❯ symbols indicate the selected answers): This command will ask you a few questions via CLI. Npx eslint -init - set up a configuration file for eslint. Npm install eslint -save-dev - install the latest eslint package version. Npm uninstall eslint - React Native 0.63.4 (at the moment of this writing) doesn't come with the latest eslint version, so we'll simply uninstall it and then install it again to pull the latest version. Npm uninstall - React Native 0.63.4 (at the moment of this writing) comes with a predefined eslint config, but we'll remove that package because we'll create our own config. ![]() For this sample, we'll ignore those details. Disable formatting in js file (we will format through EsLint) Make Prettier run on all file formats except for. It will open your ide setting in json format: Tell eslint to always show its status. ![]() Use Ctrl+, shortcut or go to File ->Preferences ->Settings. To see how you can run this app for iOS or Android please see the Running your React Native application section from the React Native Documentation. Make VSCode to auto format every time file is saved. This project was bootstrapped with React Native CLI. How to set up ESLint and Prettier in a React Native app. ![]()
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