You should see the same output as before but without the warning. Test this on the command line by running npm run lint. This makes the command especially handy as a pre-commit hook to avoid committing code with errors. The -quiet option suppresses warnings and reports only errors. node_modules/.bin/prettier -single-quote -print-width = 100 "**/*. Run a test of Prettier against our code from the command-line. Learn about the defaults and decide on your own overrides by reading the Options available in the Prettier documentation Thankfully, Prettier allows us to override any defaults using various command-line options passed at run-time. I personally prefer using single-quotes and a print width of 100. formatting the code against a print width of 80.semicolons inserted at the end of every line.Out of the box Prettier already has excellent defaults, including: We'll be doing that now to test everything is correctly installed. Test Prettier on our codeĪt its simplest Prettier can be run as a command-line tool. Rule of thumb: If your project depends on a package, it should be listed in your package.json file as a dependency and installed locally in your project, rather than globally. We install all the dependencies local to the project and avoid installing Node packages globally on our system. Setup the test projectīegin by creating a very simple Node project in a blank directory. In short, ESLint is the de facto for static analysis and Prettier has quickly become the go-to tool for formatting code. By focusing primarily on the formatting rules, Prettier can do more sophisticated things under the hood, but due to being opinionated doesn't require time fine-tuning these style rules. Prettier's sole specialisation is to handle formatting of code and it does this job extremely well. But we will rely on ESLint purely to help alert us to problematic code and defer the format handling to Prettier. It's true that ESLint could very well handle both the code quality errors and syntax format violations. This means ESLint can help us find problematic code before we commit to version control and (more importantly) before the code finds its way onto Production. What is ESLint?ĮSLint - the pluggable linting utility for JavaScript and JSXĬode linting is a form of static analysis that will find both code errors as well as highlight syntax not adhering to formatting styles. Prettier currently supports JavaScript (including ES2017), JSX, Flow, TypeScript, CSS, LESS, SCSS, JSON and GraphQL. It is particularly advantageous when working on projects in teams. Prettier is an opinionated code formatterĪ tool that will format code against some opinionated and standard default formatting rules to ensure all final code maintains a consistent style. Code -install-extension dbaeumer.vscode-eslintĬode -install-extension esbenp.prettier-vscodeĬhange VSCode settings to include "editor.formatOnSave": true, to automatically format on save.
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