ESLint
Pluggable linting utility for JavaScript.
Pricing
Free tier
Flat rate
Adoption
↗RisingLicense
Open Source
Data freshness
Verified · Jul 15, 2026Overview
What is ESLint?
ESLint is a tool that helps you identify problematic patterns in your code and enforces consistent coding conventions. It's highly configurable, allowing teams to adapt it to their specific needs.
Key differentiator
“ESLint stands out as one of the most configurable and widely adopted linting tools for JavaScript, offering extensive customization options and broad ecosystem support.”
Capability profile
Capability Radar
Honest assessment
Strengths & Weaknesses
↑ Strengths
↓ Weaknesses
ESLint's extensive configuration options and rule sets can be overwhelming for beginners, requiring significant time to understand how to customize it effectively.
Running ESLint on large codebases can lead to performance issues due to the extensive checks and configurations, potentially slowing down development workflows.
Managing `.eslintrc` files and ensuring consistency across multiple projects or environments requires a deep understanding of ESLint's configuration structure and options.
To extend functionality beyond core rules, ESLint relies heavily on community-maintained plugins which may not always be up-to-date or compatible with the latest versions of ESLint.
Fit analysis
Who is it for?
✓ Best for
Teams working on large JavaScript projects who need strict coding standards.
Projects that require integration with multiple development environments or editors.
Developers looking for a customizable linting solution.
✕ Not a fit for
Small projects where the overhead of configuration outweighs benefits.
Scenarios requiring real-time code analysis in cloud-based IDEs (ESLint is primarily local).
Cost structure
Pricing
Free Tier
Available
Open source — free to use
Starts at
$0
Model
Flat rate
Enterprise
None
Performance benchmarks
How Fast Is It?
Ecosystem
Relationships
Next step
Get Started with ESLint
Step-by-step setup guide with code examples and common gotchas.