What distinguishes the installation of eslint as an extension from installing it as an npm package?

After researching multiple blogs and videos about the setup and configuration of eslint and prettier for vscode development, I've noticed a common gap in explanation. None of the resources adequately clarify why it's necessary to install eslint as an npm package and a VS Code extension separately.

What impact does installing one without the other have? I'm eager to understand the rationale behind this distinction.

Answer №1

Why is it necessary to install ESLint both as an npm package and a Visual Studio Code extension?

Simply put, it isn't.

However, there are advantages to installing ESLint/Prettier as both an extension and a dependency:

  • Using the same package in VSCode and in your CI environment eliminates discrepancies
  • You have the flexibility to manage and update versions as needed
  • You can tailor versions for different projects, allowing for compatibility with older codebases while utilizing new features for newer projects
  • Accessing ESLint/Prettier through the package.json's script block enables customization and control over commands
  • Integration with tools like Husky or NPM hooks automates code verification and formatting

In my experience, installing locally as a package dependency (excluding CLI tools like create-react-app or angular-cli) leads to a more predictable workflow.

Answer №2

ESLint and Prettier are tools that can help with code formatting and syntax detection.

When these tools are added as extensions in your IDE, such as vscode, you'll see real-time squiggly lines and have the ability to format code on save.

However, if someone else starts your project in a different environment without these extensions, they may not have access to these helpful features.

On the other hand, by installing ESLint and Prettier as npm packages in your pipeline (e.g. npm start or continuous deployment), you may not have real-time squiggly lines, but you can still benefit from auto-formatting and blocking rules.

  • Auto-formatting may not occur on save, depending on the configuration.
  • Blocking rules can halt the pipeline until errors or warnings are fixed by the developer.
  • Ensuring that anyone starting the project, regardless of their IDE, has the necessary packages included.

Answer №3

Utilizing ESLint in two unique ways can greatly benefit both team collaboration and individual coding efficiency:

  1. ESLint as an NPM Package: This method is perfect for team projects as it ensures consistent code quality across different setups. By enforcing the same coding standards, issues can be caught early in the development process.

  2. ESLint as a VSCode Extension: By using ESLint as a VSCode extension, developers can enjoy real-time code formatting that allows for immediate issue detection and correction as code is being typed. This feature boosts productivity by enabling quick problem-solving on the spot.

By embracing both of these approaches, teams can benefit from a comprehensive solution that provides standardized quality and efficient, real-time coding enhancements.

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