ESLint vs ktlint

Overview

ESLint

Stacks38.6K

Followers14.0K

Votes28

GitHub Stars26.6K

Forks4.8K

ktlint

Stacks16

Followers14

Votes0

GitHub Stars6.6K

Forks518

ESLint vs ktlint: What are the differences?

Introduction

In the world of programming, tools like ESLint and ktlint play a vital role in helping developers maintain code quality by enforcing coding standards and identifying potential errors.

Implementation Language: ESLint is written in JavaScript, primarily intended for JavaScript code linting, while ktlint is written in Kotlin and is specifically designed for linting Kotlin code.
Configuration: ESLint offers a highly customizable configuration setup through its configuration files, allowing developers to tailor linting rules to their specific requirements. On the other hand, ktlint follows a more opinionated approach with a limited configuration that focuses on maintaining a consistent Kotlin code style.
Community and Ecosystem: ESLint has a vast and active community supporting it, providing a wide range of plugins and extensions for various frameworks and libraries. In contrast, ktlint, being relatively newer, may have a smaller ecosystem with fewer community-contributed plugins available.
Integration with Build Tools: ESLint seamlessly integrates with popular build tools such as webpack and Babel, enabling easy incorporation into the build process. ktlint also supports integration with build tools like Gradle for smooth incorporation into Kotlin projects.
Error and Warning Differentiation: ESLint differentiates between errors and warnings, allowing developers to prioritize fixes based on severity levels. In comparison, ktlint treats all deviations from the coding standard as errors, ensuring a stricter approach to enforcing code style consistency.
File Support: ESLint has flexibility in supporting multiple file types and formats beyond JavaScript, such as JSX, TypeScript, and more. Conversely, ktlint focuses solely on linting Kotlin files, specializing in maintaining Kotlin code quality.

In Summary, ESLint and ktlint differ in their implementation language, configuration flexibility, community support, build tool integration, error handling, and file support.

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CLI (Node.js)

Manual

Detailed Comparison

ESLint	ktlint
A pluggable and configurable linter tool for identifying and reporting on patterns in JavaScript. Maintain your code quality with ease.	An anti-bikeshedding Kotlin linter with built-in formatter.
-	No configuration; Built-in formatter; Customizable output; A single executable jar with all dependencies included
Statistics
GitHub Stars 26.6K	GitHub Stars 6.6K
GitHub Forks 4.8K	GitHub Forks 518
Stacks 38.6K	Stacks 16
Followers 14.0K	Followers 14
Votes 28	Votes 0
Pros & Cons
Pros 8 Consistent javascript - opinions don't matter anymore 6 Free 6 IDE Integration 4 Customizable 2 Focuses code review on quality not style	No community feedback yet
Integrations
JavaScript	Kotlin

What are some alternatives to ESLint, ktlint?

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

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 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 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 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 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

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

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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ESLint vs ktlint: What are the differences?

Introduction

In the world of programming, tools like ESLint and ktlint play a vital role in helping developers maintain code quality by enforcing coding standards and identifying potential errors.

Implementation Language: ESLint is written in JavaScript, primarily intended for JavaScript code linting, while ktlint is written in Kotlin and is specifically designed for linting Kotlin code.
Configuration: ESLint offers a highly customizable configuration setup through its configuration files, allowing developers to tailor linting rules to their specific requirements. On the other hand, ktlint follows a more opinionated approach with a limited configuration that focuses on maintaining a consistent Kotlin code style.
Community and Ecosystem: ESLint has a vast and active community supporting it, providing a wide range of plugins and extensions for various frameworks and libraries. In contrast, ktlint, being relatively newer, may have a smaller ecosystem with fewer community-contributed plugins available.
Integration with Build Tools: ESLint seamlessly integrates with popular build tools such as webpack and Babel, enabling easy incorporation into the build process. ktlint also supports integration with build tools like Gradle for smooth incorporation into Kotlin projects.
Error and Warning Differentiation: ESLint differentiates between errors and warnings, allowing developers to prioritize fixes based on severity levels. In comparison, ktlint treats all deviations from the coding standard as errors, ensuring a stricter approach to enforcing code style consistency.
File Support: ESLint has flexibility in supporting multiple file types and formats beyond JavaScript, such as JSX, TypeScript, and more. Conversely, ktlint focuses solely on linting Kotlin files, specializing in maintaining Kotlin code quality.

In Summary, ESLint and ktlint differ in their implementation language, configuration flexibility, community support, build tool integration, error handling, and file support.