effect-ts
59 weekly downloads · 73.0 B gzip · Health 43/100
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Comparison guide
Effect-ts vs Fp-ts
Side-by-side NPM package comparison
Quick Verdict
Smallest Bundle
Effect-ts
73.0 B gzipped
Most Popular
Fp-ts
2.3M weekly downloads
Best Maintained
Effect-ts
20/100 maintenance score
Highest Quality
Fp-ts
80/100 quality score
Overall Pick
Fp-ts
Best all-around based on popularity, size, maintenance & quality
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Choosing between Effect-ts and Fp-ts? Here's a data-driven comparison based on real npm data — downloads, bundle size, health scores, and more — to help you decide which package fits your project best.
Downloads & Popularity
Fp-ts leads with 2.3M weekly downloads — roughly 38765.5x more. Effect-ts has 59 weekly downloads. Higher download counts generally indicate broader community adoption and a larger ecosystem of tutorials, plugins, and support.
Bundle Size
Effect-ts has the smallest gzipped bundle at 73.0 B. Fp-ts comes in at 57.1 KB. A smaller bundle size means faster page loads, which improves user experience and Core Web Vitals scores.
Health Score Comparison
Fp-ts has an overall health score of 68/100 (good), with strong quality, security, popularity scores. Effect-ts has an overall health score of 43/100 (moderate), with strong security scores. Health scores are calculated from maintenance activity, code quality, security posture, popularity, and stability metrics.
When to Choose Each
Choose Effect-ts if you value minimal bundle footprint, strong security track record. Choose Fp-ts if you value large community support, strong security track record.
Our Verdict
Both Effect-ts and Fp-ts are solid choices for JavaScript development. Fp-ts has the edge in overall health score (68/100), while each package brings unique strengths to the table. Evaluate them based on your project's priorities — whether that's community size, bundle efficiency, or maintenance activity — and choose the one that aligns best with your requirements.
Frequently Asked Questions
- Is effect-ts better than fp-ts?
- It depends on your needs. Effect-ts has a health score of 43/100 while Fp-ts scores 68/100. Fp-ts has more recorded weekly downloads (2.3M). Consider your specific requirements — bundle size, community support, and feature set — to decide which is the better fit.
- Which has a smaller bundle size, effect-ts or fp-ts?
- Effect-ts has the smaller gzipped bundle at 73.0 B. A smaller bundle means faster load times for your users, which can positively impact SEO and user experience.
- How many developers use effect-ts vs fp-ts?
- Fp-ts has more recorded weekly downloads (2.3M). Download counts reflect package installations, not unique developers.
- Which is better maintained, effect-ts or fp-ts?
- Effect-ts has a maintenance score of 20/100. Effect-ts scores 20/100 and Fp-ts scores 20/100 on maintenance.
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