What is tsup?
A tool that bundles TypeScript libraries with automatic configuration, supporting Node.js native features and experimental CSS support.
Platform & deployment
Independently observed- CLI
Security & compliance
Known vulnerabilities: 1 (0 in the last 12 months), max severity LOW sourcea count reflects scale & disclosure, not quality
tsup FAQ
Common questions about tsup, answered from independent, dated evidence.
What is tsup?
A tool that bundles TypeScript libraries with automatic configuration, supporting Node.js native features and experimental CSS support. It is indexed under Bundlers.
Source: https://tsup.egoist.dev
What platforms does tsup support?
tsup supports a command-line interface. Platforms we have not confirmed are simply not listed here rather than ruled out.
Source: https://tsup.egoist.dev
Is tsup open source?
Yes. tsup is published under the MIT licence, a permissive licence that generally allows commercial use and modification. Licence terms can change between releases, so verify against the repository for the version you intend to use.
Source: https://github.com/egoist/tsup
tsup alternatives
Other bundlers we track, ranked by the same independent score.
- ViteA modern, high-performance build system for web developmenthigh · 78%
- webpackJavaScript module bundler that packages code and assets for web browsershigh · 78%
- MetroA high-performance bundler optimized for React Native developmentmedium · 66%
- RollupA JavaScript bundler that optimizes ES modules for different runtime environments and removes unused code automaticallyhigh · 76%
- RspackA high-performance bundler that replaces webpack while maintaining API compatibilitymedium · 65%
- Turbopackmedium · 60%
Compare tsup
Side by side against other bundlers, attribute by attribute, with a source on every value.
The vioscaleAI score: one lens on the evidence
Not user reviews and not a paid placement: a confidence-weighted blend of the independent signals below (adoption, activity, security posture, and more), which you can sort and re-weight yourself. Vendors can correct their listing but can never move their rank, and stars are weighted low as a vanity metric. It is one way to read the evidence for tsup, not the verdict.
| Signal | Score | Weight | Contribution | Evidence |
|---|---|---|---|---|
| Release cadence | 96 | 0.07 | 6.4 | ✓ |
| Dependent projects | 66 | 0.08 | 5.3 | ✓ |
| Stars | 77 | 0.03 | 2.5 | ✓ |
| Security score | 35 | 0.05 | 1.9 | ✓ |
| Capabilities | 0 | 0.08 | 0.0 | - |
| Integrations | 0 | 0.05 | 0.0 | - |
| Development activity | 0 | 0.12 | 0.0 | ✓ |
| Security posture | 0 | 0.09 | 0.0 | - |
| Package downloads | 0 | 0.17 | 0.0 | - |
| Developer Q&A activity | 0 | 0.08 | 0.0 | - |
Computed . Re-weight it by intent, or see the full method.
All data & sourcesshow ↓
Every value we hold, with its source, retrieval date, and confidence. This is the evidence behind the score: don't trust it, verify it.
Activity
| Attribute | Value | Evidence |
|---|---|---|
| Commits last 30d | 0 | mediumsource · 2026-08-18 · 65% |
Adoption
Content
| Attribute | Value | Evidence |
|---|---|---|
| Faq | 3 items | mediumsource · 2026-09-10 · 72% |
Language
| Attribute | Value | Evidence |
|---|---|---|
| Primary | TypeScript | highsource · 2026-10-14 · 90% |
License
| Attribute | Value | Evidence |
|---|---|---|
| Spdx | MIT | highsource · 2026-10-14 · 95% |
Release
Security
Is tsup the right choice for you?
Tell us the job, the constraints and what you weigh most, and we will rank tsup against the rest of the bundlers we index, using the same dated evidence weighted your way.
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Is this your product?
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- Correct anything wrong, with evidence
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