Software · head to head
Deno vs ESLint
Deno
Software
A fast, open-source, fully Node-compatible JS runtime with TypeScript baked right in
- From
- Free
- Rated
- -
The short version
- Each has a real cost: Deno the runtime itself is MIT licensed per the project's GitHub repository (denoland/deno LICENSE.md) with no cost, but Deno Deploy's free tier caps at 1 million requests and 15 CPU hours per month, per deno.com/deploy/pricing (Aug 2026); ESLint slow performance on large codebases compared to newer tools like Oxlint and Biome
Where they differ
Only the attributes on which Deno and ESLint actually diverge.
Identical on both: starting price (Free), free tier (Yes), user rating (Not yet rated), category (Unknown).
What people use each for
The jobs each tool is most often brought in to do.
Deno
No use cases recorded yet. See the Deno review.
ESLint
- Statically analysing JavaScript and JSX to find problems before runtimenot Deno
- Automatically fixing issues with syntax-aware rewritesnot Deno
- Enforcing a consistent code style across a teamnot Deno
- Running as a CI step to block non-conforming codenot Deno
- Writing custom rules for project-specific conventionsnot Deno
Where each one falls short
Documented limitations, not opinions. Every one is a constraint you would hit in normal use.
Deno
- The runtime itself is MIT licensed per the project's GitHub repository (denoland/deno LICENSE.md) with no cost, but Deno Deploy's free tier caps at 1 million requests and 15 CPU hours per month, per deno.com/deploy/pricing (Aug 2026)
- Deno Deploy Pro at $20 per month charges $2 per additional million requests and $0.05 per additional CPU hour once the included quota is exceeded, per deno.com/deploy/pricing
ESLint
- Slow performance on large codebases compared to newer tools like Oxlint and Biome
- Complexity in configuration from scratch, particularly for TypeScript support
- Limited built-in TypeScript support, requiring separate parsers and coordination with new TypeScript features
Pricing, plan by plan
Deno
FreeNo published plan breakdown. See the Deno review.
ESLint
FreeNo published plan breakdown. See the ESLint review.
Which should you pick?
Choose ESLint if
- You want to start without paying.
- You work on Browser-based JavaScript, Node.js, Any JavaScript environment.
Questions people ask
- Is Deno or ESLint better?
- Neither clearly leads. Deno starts at Free and ESLint at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
- Which is cheaper, Deno or ESLint?
- Deno starts at Free and ESLint at Free.
- Does Deno or ESLint run on more platforms?
- Deno runs on Web. ESLint runs on Browser-based JavaScript, Node.js, Any JavaScript environment.
- Can I use Deno for free?
- Both have a free tier, so you can try either at no cost before committing.
Answered from the vendors’ own pages
ESLint: Does ESLint automatically fix code issues?
Many problems ESLint finds can be automatically fixed via the --fix flag. ESLint fixes are syntax-aware so you won't experience errors introduced by traditional find-and-replace algorithms.
SourceESLint: How much does ESLint cost?
ESLint is completely free and open-source software maintained by the OpenJS Foundation. The project accepts voluntary donations from sponsors.
SourceESLint: Can I write custom ESLint rules?
Yes. You can develop custom rules that work alongside built-in functionality through ESLint's plugin system, allowing complete customization for your project needs.
Source