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  5. ESLint vs RuboCop

ESLint vs RuboCop

OverviewDecisionsComparisonAlternatives

Overview

RuboCop
RuboCop
Stacks1.4K
Followers222
Votes41
ESLint
ESLint
Stacks38.6K
Followers14.0K
Votes28
GitHub Stars26.6K
Forks4.8K

ESLint vs RuboCop: What are the differences?

Introduction

ESLint and RuboCop are static analysis tools that help developers ensure code quality, enforce coding standards, and identify potential issues or bugs. While both tools serve a similar purpose, there are some key differences between them that make them suitable for different programming languages and ecosystems.

  1. Language Support: ESLint is primarily designed for JavaScript and has comprehensive support for ECMAScript standards. On the other hand, RuboCop is tailored for Ruby programming language and has deep understanding of Ruby syntax, idioms, and best practices.

  2. Configuration Options: ESLint offers a flexible configuration system that allows developers to enable or disable specific rules, define custom rules, and configure rule options. RuboCop also provides configuration options but follows a more opinionated approach with a predefined set of rules specifically geared towards Ruby conventions.

  3. Rule Sets and Plugins: ESLint has a vibrant ecosystem with a wide range of rule sets and plugins available to address specific coding styles, frameworks, or libraries. This extensibility allows developers to tailor ESLint to their specific needs. RuboCop also provides support for plugins and has a variety of predefined rule sets, making it easy to adopt and enforce Ruby conventions.

  4. Integration and Tooling: ESLint integrates seamlessly with popular code editors and development tools and has widespread adoption in the JavaScript ecosystem. It has robust support for IDE plugins, build systems, and continuous integration environments. RuboCop also integrates well with editors and development environments but has a stronger presence in the Ruby community.

  5. Community and Documentation: ESLint has a large and active community, which means more support, frequent updates, and a wealth of documentation and resources. With a strong focus on JavaScript ecosystem, it has become a go-to tool for many developers. RuboCop has a dedicated community that focuses on Ruby and offers comprehensive documentation and resources specifically geared towards Ruby programming.

  6. Validation Strategy: ESLint provides developers with the ability to perform static analysis on JavaScript code and help catch potential errors or anti-patterns. RuboCop, on the other hand, leverages a more stylistic approach and focuses on enforcing Ruby coding conventions and best practices.

In summary, ESLint and RuboCop have key differences in terms of language support, configuration options, rule sets, integration, community, documentation, and validation strategy. While ESLint is more prevalent in the JavaScript ecosystem, RuboCop is widely adopted by Ruby developers, making them suitable choices for their respective programming languages.

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Advice on RuboCop, ESLint

Weverton
Weverton

CTO at SourceLevel

Aug 10, 2020

Review

To communicate isn’t just getting rid of syntax errors and making code work. The code should communicate ideas to people through a programming language that computers can also understand.

You should adopt semantic variables, classes, modules, and methods names. For instance, in Ruby, we avoid using particular prefixes such as is_paid, get_name and set_name. In their places, we use directly paid?, name, and name=.

My advice is to use idiomatic and features that the programming language you use offers to you whenever possible, and figure out ways to better pass the message.

Why wouldn’t we be worried about semantics, typos, and styles? We should care for the quality of our code, and the many concepts that define it. You can start by using a #linter to collect some issues from your codebase automatically.

116k views116k
Comments
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

RuboCop
RuboCop
ESLint
ESLint

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.

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

Statistics
GitHub Stars
-
GitHub Stars
26.6K
GitHub Forks
-
GitHub Forks
4.8K
Stacks
1.4K
Stacks
38.6K
Followers
222
Followers
14.0K
Votes
41
Votes
28
Pros & Cons
Pros
  • 9
    Open-source
  • 8
    Completely free
  • 7
    Runs Offline
  • 4
    Can automatically fix some problems
  • 4
    Customizable
Pros
  • 8
    Consistent javascript - opinions don't matter anymore
  • 6
    IDE Integration
  • 6
    Free
  • 4
    Customizable
  • 2
    Focuses code review on quality not style
Integrations
Ruby
Ruby
JavaScript
JavaScript

What are some alternatives to RuboCop, ESLint?

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.

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.

bitHound

bitHound

With faster deployment cycles, a hundred competing priorities and tight deadlines to juggle– your team has a lot on their plate. Uncover and focus on the critical issues impacting your team, avoid software pitfalls and ship with confidence.

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