Prettier: A Code Formatter for Consistent Code Styling

Prettier: A Code Formatter for Consistent Code Styling


Prettier is an opinionated code formatter that helps maintain consistent code styling. It ensures that code adheres to a specific formatting style, making it easier to read, navigate, and collaborate on code across teams.

Benefits of Using Prettier

There are many benefits to using Prettier, including:

  • Improved Code Readability: Prettier formats code consistently, making it easier to read and understand.
  • Increased Code Maintainability: Consistent code formatting reduces the cognitive load required to understand code, making it easier to maintain and update.
  • Streamlined Code Review: Prettier-formatted code reduces the need for stylistic discussions during code reviews, focusing discussions on more substantive issues.
  • Promotes Code Consistency: Prettier enforces a consistent coding style across the codebase, ensuring that code looks and feels similar regardless of the developer.

Installing Prettier

To install Prettier, you can follow these steps:

  1. Open your project’s root directory in a terminal window.
  2. Run the following command:
npm install -g prettier

This will install Prettier globally.

Using Prettier

Once you have installed Prettier, you can use it to format your code. To do this, you can run the following command:

prettier --write [filename]

his will format the specified file according to Prettier’s rules. You can also use Prettier in your code editor by installing the Prettier plugin for your editor.

Configuring Prettier

You can customise Prettier’s formatting rules by creating a .prettierrc file in your project’s root directory.

This file contains a JSON object that defines your preferred formatting options. For example, the following configuration will set the indentation size to 2 spaces and the line length to 80 characters:

  "tabWidth": 2,
  "printWidth": 80,
  "trailingComma": "es5"

Incorporating Prettier into your Workflow

To incorporate Prettier into your workflow, you should integrate it with your code editor and your build process. This will ensure your code is formatted automatically whenever you save a file or run your build process.


Prettier is a valuable tool for maintaining consistent and readable code. Using Prettier, you can help ensure that your code is easy to understand, maintain, and collaborate on.

Additional Resources


Hi, my name is Stephen Finchett. I have been a software engineer for over 30 years and worked on complex, business critical, multi-user systems for all of my career. For the last 15 years, I have been concentrating on web based solutions using the Microsoft Stack including ASP.Net, C#, TypeScript, SQL Server and running everything at scale within Kubernetes.