Code formatter4/6/2023 Hard to decide what is the ‘best’ way to format a long argument list? Prettier will format that argument list beautifully for you. Hate writing semicolons in JavaScript? Can’t remember what statements are affected by the rules of automatic semicolon insertion? No problem, leave out all semicolons and Prettier will handle them for you. It means you can write stylistically idiosyncratic code and Prettier will fix it for you. Prettier guarantees consistency in formatting by parsing your code into an abstract syntax tree (AST) and pretty-printing the AST.Īll of your original styling choices are gone² and your code is pretty-printed to a standard style, with some options that you and your team can decide on and preconfigure. Prettier is an opinionated code formatter that supports JavaScript (including ES2017), JSX, Flow, TypeScript, JSON, CSS, Less, SCSS, styled-components, Markdown, and GraphQL. ![]() Prettier makes formatting computers’ work. At the same time, Prettier makes code formatting consistent across an entire codebase, increasing legibility. And owners, maintainers, and collaborators don’t have to enforce a style guide using nits in code reviews. With Prettier, individuals who are not familiar with the project’s style guidelines have one less thing to worry about when making a pull request. This is fantastic for many teams and projects, but especially for open source, where contributors are usually dispersed, often strangers, and sometimes new to the project. ![]() In practice, this means that Prettier leverages what computers are good at - parsing and analysing code - to enable smoother, easier collaboration in software development.¹ Prettier is an opinionated code formatter. ![]() Cherry Blossom Avenue, Greenwich Park, LondonĪs part of my work with Outreachy on Jaeger, an open source distributed tracing system, we’ve recently added Prettier to the Node.js client library.
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