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Bun vs Ts-node vs Tsx

Side-by-side NPM package comparison

bun

Very Popular

Version 1.3.10

92
Excellent

Bun is a fast all-in-one JavaScript runtime.

Weekly Downloads
1.0M
10%
Bundle (gzip)
5.8 KB
Updated
Vulns
0

Health Score Breakdown

Maintenance
100
Popularity
100
Quality
80
Security
100
Stability
70

ts-node

Extremely Popular

Version 10.9.2

80
Excellent

TypeScript execution environment and REPL for node.js, with source map support

Weekly Downloads
42.3M
12%
Bundle (gzip)
221.9 KB
Updated
Vulns
0

Health Score Breakdown

Maintenance
60
Popularity
100
Quality
80
Security
100
Stability
70

tsx

Extremely Popular

Version 4.21.0

80
Excellent

TypeScript Execute (tsx): Node.js enhanced with esbuild to run TypeScript & ESM files

Weekly Downloads
32.0M
25%
Bundle (gzip)
126.8 KB
Updated
Vulns
0

Health Score Breakdown

Maintenance
60
Popularity
100
Quality
80
Security
100
Stability
70

Choosing between Bun and Ts-node and Tsx? 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

Ts-node leads with 42.3M weekly downloads — roughly 1.3x more. Tsx has 32.0M weekly downloads. Bun has 1.0M weekly downloads. Higher download counts generally indicate broader community adoption and a larger ecosystem of tutorials, plugins, and support.

Bundle Size

Bun has the smallest gzipped bundle at 5.8 KB. Tsx comes in at 126.8 KB. Ts-node comes in at 221.9 KB. A smaller bundle size means faster page loads, which improves user experience and Core Web Vitals scores.

Health Score Comparison

Bun has an overall health score of 92/100 (excellent), with strong maintenance, quality, security, popularity scores. Ts-node has an overall health score of 80/100 (very good), with strong quality, security, popularity scores. Tsx has an overall health score of 80/100 (very good), with strong quality, security, popularity scores. Health scores are calculated from maintenance activity, code quality, security posture, popularity, and stability metrics.

When to Choose Each

Choose Bun if you value large community support, actively maintained, strong security track record. Choose Ts-node if you value massive community and ecosystem, strong security track record. Choose Tsx if you value massive community and ecosystem, strong security track record.

Our Verdict

Both Bun and Ts-node and Tsx are solid choices for JavaScript development. Bun has the edge in overall health score (92/100), 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 bun better than ts-node?
It depends on your needs. Bun has a health score of 92/100 while Ts-node scores 80/100. Ts-node has more weekly downloads (42.3M), suggesting broader adoption. Consider your specific requirements — bundle size, community support, and feature set — to decide which is the better fit.
Which has a smaller bundle size, bun or ts-node?
Bun has the smaller gzipped bundle at 5.8 KB. A smaller bundle means faster load times for your users, which can positively impact SEO and user experience.
How many developers use bun vs ts-node?
Based on npm download statistics, Bun has approximately 1.0M weekly downloads and Ts-node has approximately 42.3M weekly downloads. These numbers reflect package installations, not unique developers, but they indicate relative adoption levels.
Which is better maintained, bun or ts-node?
Bun currently has the higher overall health score at 92/100. Bun has a maintenance score of 100/100 and Ts-node scores 60/100 on maintenance.

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