Software · head to head
Yarn vs Deno
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: Yarn yarn 2+ (Berry) has limited ESM support which can be a constraint for some projects; 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)
Where they differ
Only the attributes on which Yarn and Deno actually diverge.
Identical on both: starting price (Free), free tier (Yes), user rating (Not yet rated), category (Unknown).
Where each one falls short
Documented limitations, not opinions. Every one is a constraint you would hit in normal use.
Yarn
- Yarn 2+ (Berry) has limited ESM support which can be a constraint for some projects
- Smaller ecosystem and community compared to npm, though still substantial
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
Pricing, plan by plan
Yarn
FreeNo published plan breakdown. See the Yarn review.
Deno
FreeNo published plan breakdown. See the Deno review.
Which should you pick?
Questions people ask
- Is Yarn or Deno better?
- Neither clearly leads. Yarn starts at Free and Deno at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
- Which is cheaper, Yarn or Deno?
- Yarn starts at Free and Deno at Free.
- Does Yarn or Deno run on more platforms?
- Yarn runs on Web, Linux, macOS, Windows. Deno runs on Web.
- Can I use Yarn for free?
- Both have a free tier, so you can try either at no cost before committing.
Answered from the vendors’ own pages
Yarn: What is Yarn's main advantage over npm?
Yarn downloads packages in parallel, significantly reducing installation time. It uses a yarn.lock file for deterministic installs, ensuring identical package versions across machines and preventing version conflicts common with npm.
SourceYarn: Can I use Yarn in offline environments?
Yes, Yarn supports secure offline environments. The yarn.lock file enables reproducible installs without requiring new downloads.
Source