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  1. Stackups
  2. DevOps
  3. Code Review
  4. Code Review
  5. ESLint vs Prettier

ESLint vs Prettier

OverviewDecisionsComparisonAlternatives

Overview

ESLint
ESLint
Stacks38.6K
Followers14.0K
Votes28
GitHub Stars26.6K
Forks4.8K
Prettier
Prettier
Stacks13.2K
Followers1.3K
Votes7
GitHub Stars51.1K
Forks4.6K

ESLint vs Prettier: What are the differences?

ESLint and Prettier are popular tools in the JavaScript ecosystem, used for maintaining code quality and enforcing coding standards. Let's explore the key difference between them.

  1. Parsing and Analysis: ESLint primarily focuses on analyzing and identifying problematic patterns or code that might have potential bugs or errors. It performs a thorough static analysis of JavaScript code to catch issues like unused variables, missing semicolons, and more. On the other hand, Prettier is primarily concerned with code formatting and styling. It automatically enforces a consistent code style by parsing the code and then reformatting it to follow predefined rules.

  2. Configuration and Style Guide: ESLint offers a highly flexible and customizable configuration setup. It allows developers to define their own set of rules or use popular style guides like Airbnb, Google, or Standard. Additionally, ESLint offers options for enabling or disabling specific rules based on project preferences. In contrast, Prettier has a less flexible configuration. It follows a strict set of predefined rules for code styling and does not provide options for customization or style guide selection.

  3. Formatting vs Linting: While both ESLint and Prettier enforce code quality, they have different focuses. ESLint is primarily concerned with linting, which involves catching bugs and finding code quality issues. It helps to identify potential errors and improve the overall code quality. On the other hand, Prettier focuses solely on code formatting. It does not perform any linting or static analysis, and its primary goal is to ensure consistent and aesthetically pleasing code formatting.

  4. Fixing vs Rewriting Code: ESLint, being a linter, not only identifies code issues but also provides automatic fix suggestion for certain errors. It has the ability to automatically fix some problems by rewriting the code. This can be helpful in saving time and effort for developers. In contrast, Prettier does not offer automatic fix suggestions. Instead, it completely rewrites the code to match the predefined formatting rules, resulting in a consistent and formatted codebase.

  5. Supported Languages: ESLint primarily focuses on JavaScript and provides extensive support for linting JavaScript code, including ECMAScript 6+ syntax and JSX in React. It also supports various plugins and configurations for other languages like TypeScript and Vue. On the other hand, Prettier supports multiple languages, including JavaScript, TypeScript, CSS, HTML, JSON, YAML, and more. It can be used as a code formatter for a wide range of file types.

  6. Integration with Development Tools: ESLint integrates seamlessly with popular development tools and IDEs. It provides plugins for editors like Visual Studio Code, Sublime Text, and Atom, allowing real-time linting and quick error identification during development. Additionally, ESLint can be easily integrated into build tools or pre-commit hooks for enforcing code quality standards. On the other hand, Prettier also supports integration with various tools and editors but primarily focuses on providing a standalone code formatter.

In summary, ESLint is more focused on static analysis, customization, and linting JavaScript code, whereas Prettier is primarily concerned with code formatting and enforcing consistent style rules across multiple languages.

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Advice on ESLint, Prettier

Carlos
Carlos

Mar 14, 2020

Needs adviceonPrettierPrettierESLintESLintgulpgulp

Scenario: I want to integrate Prettier in our code base which is currently using ESLint (for .js and .scss both). The project is using gulp.

It doesn't feel quite right to me to use ESLint, I wonder if it would be better to use Stylelint or Sass Lint instead.

I completed integrating ESLint + Prettier, Planning to do the same with [ Stylelint || Sasslint || EsLint] + Prettier.

And have gulp 'fix' on file save (Watcher).

Any recommendation is appreciated.

465k views465k
Comments
Alex
Alex

Software Engineer

Aug 7, 2020

Review

you don't actually have to choose between these tools as they have vastly different purposes. i think its more a matter of understanding how to use them.

while eslint and stylelint are used to notify you about code quality issues, to guide you to write better code, prettier automatically handles code formatting (without notifying me). nothing else.

prettier and eslint both officially discourage using the eslint-plugin-prettier way, as these tools actually do very different things. autofixing with linters on watch isnt a great idea either. auto-fixing should only be done intentionally. you're not alone though, as a lot of devs set this up wrong.

i encourage you to think about what problem you're trying to solve and configure accordingly.

for my teams i set it up like this:

  • eslint, stylelint, prettier locally installed for cli use and ide support
  • eslint config prettier (code formatting rules are not eslints business, so dont warn me about it)
  • vscode workspace config: format on save
  • separate npm scripts for linting, and formatting
  • precommit hooks (husky)

so you can easily integrate with gulp. its just js after all ;)

159k views159k
Comments

Detailed Comparison

ESLint
ESLint
Prettier
Prettier

A pluggable and configurable linter tool for identifying and reporting on patterns in JavaScript. Maintain your code quality with ease.

Prettier is an opinionated code formatter. It enforces a consistent style by parsing your code and re-printing it with its own rules that take the maximum line length into account, wrapping code when necessary.

-
An opinionated code formatter; Supports many languages; Integrates with most editors; Has few options; You press save and code is formatted; No need to discuss style in code review; Saves you time and energy
Statistics
GitHub Stars
26.6K
GitHub Stars
51.1K
GitHub Forks
4.8K
GitHub Forks
4.6K
Stacks
38.6K
Stacks
13.2K
Followers
14.0K
Followers
1.3K
Votes
28
Votes
7
Pros & Cons
Pros
  • 8
    Consistent javascript - opinions don't matter anymore
  • 6
    Free
  • 6
    IDE Integration
  • 4
    Customizable
  • 2
    Broad ecosystem of support & users
Pros
  • 2
    Customizable
  • 1
    Completely free
  • 1
    Open Source
  • 1
    Atom/VSCode package
  • 1
    Runs offline
Integrations
JavaScript
JavaScript
GraphQL
GraphQL
JavaScript
JavaScript
TypeScript
TypeScript
Flow
Flow
Vue.js
Vue.js
AngularJS
AngularJS
markdown
markdown
YAML
YAML
Less
Less

What are some alternatives to ESLint, Prettier?

Code Climate

Code Climate

After each Git push, Code Climate analyzes your code for complexity, duplication, and common smells to determine changes in quality and surface technical debt hotspots.

Codacy

Codacy

Codacy automates code reviews and monitors code quality on every commit and pull request on more than 40 programming languages reporting back the impact of every commit or PR, issues concerning code style, best practices and security.

Phabricator

Phabricator

Phabricator is a collection of open source web applications that help software companies build better software.

PullReview

PullReview

PullReview helps Ruby and Rails developers to develop new features cleanly, on-time, and with confidence by automatically reviewing their code.

Gerrit Code Review

Gerrit Code Review

Gerrit is a self-hosted pre-commit code review tool. It serves as a Git hosting server with option to comment incoming changes. It is highly configurable and extensible with default guarding policies, webhooks, project access control and more.

SonarQube

SonarQube

SonarQube provides an overview of the overall health of your source code and even more importantly, it highlights issues found on new code. With a Quality Gate set on your project, you will simply fix the Leak and start mechanically improving.

RuboCop

RuboCop

RuboCop is a Ruby static code analyzer. Out of the box it will enforce many of the guidelines outlined in the community Ruby Style Guide.

CodeFactor.io

CodeFactor.io

CodeFactor.io automatically and continuously tracks code quality with every GitHub or BitBucket commit and pull request, helping software developers save time in code reviews and efficiently tackle technical debt.

Amazon CodeGuru

Amazon CodeGuru

It is a machine learning service for automated code reviews and application performance recommendations. It helps you find the most expensive lines of code that hurt application performance and keep you up all night troubleshooting, then gives you specific recommendations to fix or improve your code.

Reviewable

Reviewable

A code review tool for GitHub pull requests inspired by Google's internal tool. Powerful diffing and workflow features wrapped in a beautiful UI, with seamless GitHub integration. Free for public repos.

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