rolldown/tsdown
What happens to a stranger's pull request here, in the Porchlamp snapshot of 17 October 2026.
Outside pull requests to rolldown/tsdown got a first human reply in a median of 11.6 hours (41 pull requests, 20 April to 17 October 2026); 29% got none within 14 days. It ranks 992 of 3,219 overall. For first-time contributors it ranks 580 of 1,525 (the top 39%).
| Rank | 992 of 3,219 |
|---|---|
| Score | 55.44 |
| Tier | B |
| Median first reply | 11.6 hours |
| 14-day no-reply share | 29% |
| First-timer rank | 580 of 1,525 |
| Ecosystem | JavaScript |
| Window | 20 April to 17 October 2026 |
Composite
- Rank
- 992 of 3,219
- Score
- 55.44
- Tier
- B
- Coverage
- 100% · Full
- Quadrant
- Nursery
Coordinates: leverage 46.9 (coverage 100%), friction 35.6 (coverage 100%)
Five pillars
| Pillar | Score | Coverage |
|---|---|---|
| Responsiveness | 79.8 | 100% |
| Criticality | 37.1 | 100% |
| Governance | 50.5 | 100% |
| Rigor | 60.7 | 100% |
| Accessibility | 46.8 | 100% |
The measured parameters
Responsiveness
| Parameter | Value | Score | Count | Window | Source |
|---|---|---|---|---|---|
| Decision Rate (90d)Share of outside pull requests that were merged or closed within 90 days. | 100.0% | 100.0 | 19 | 20 April to 19 July 2026 | primaryraw/pr_window/rolldown__tsdown.json |
| PR Ghost Rate (14d)Share of outside pull requests with no maintainer response, merge or close within 14 days. | 28.9% | 42.2 | 45 | 20 April to 17 October 2026 | primaryraw/pr_window/rolldown__tsdown.json |
| First-timer Merge RateShare of first-time outside authors' decided pull requests that were merged. | 61.8% | 77.2 | 34 | — | primaryraw/author_history/rolldown__tsdown.json |
| Time to First ResponseMedian hours from an outside pull request opening to its first substantive human reply. | 11.6 hours (0.5 days) | 100.0 | 41 | 20 April to 17 October 2026 | primaryraw/pr_window/rolldown__tsdown.json |
| Time to Merge (p90)Hours within which 90% of merged outside pull requests were merged. | 509.8 hours (21.2 days) | 30.1 | 33 | 20 April to 17 October 2026 | primaryraw/pr_window/rolldown__tsdown.json |
Criticality
| Parameter | Value | Score | Count | Window | Source |
|---|---|---|---|---|---|
| DependentsPackages in the registry that depend on this project, counted once each. | 0 | 10.1 | — | — | primaryraw/dependents/rolldown__tsdown.json |
| Monthly DownloadsDownloads from the package registry in a month. | 19.5 million downloads a month | 74.6 | — | — | primaryraw/downloads/npm__tsdown.json |
| OpenSSF CriticalityOpenSSF criticality score from 0 to 1, computed from the project's public activity signals. | 0.41 | 41.0 | — | — | primaryraw/github_meta/rolldown__tsdown.json |
Governance
| Parameter | Value | Score | Count | Window | Source |
|---|---|---|---|---|---|
| Elephant FactorThe fewest organisations that account for half of the last year's commits. | 1 | 25.0 | 597 | — | primaryraw/commits_365d/rolldown__tsdown.json |
| Legal IP RegimeThe contributor licence regime: DCO, none, a foundation CLA or a corporate CLA. | No CLA or sign-off found | 85.0 | — | — | primaryraw/governance/rolldown__tsdown.json |
| Promotion LadderHow openly a contributor can become a maintainer, from closed to verified. | No written path to becoming a maintainer | 40.0 | — | — | primaryraw/governance/rolldown__tsdown.json |
Rigor
| Parameter | Value | Score | Count | Window | Source |
|---|---|---|---|---|---|
| AI Policy PostureWhether the project has a written policy on AI-assisted contributions. | Written AI policy | 95.0 | — | — | primaryraw/governance/rolldown__tsdown.json |
| Pipeline DefensesHow well the project's build and review pipeline defends against bad changes, 0 to 100. | 74.9855 | 75.0 | 46 | — | proxy:review_ciraw/pr_window/rolldown__tsdown.json |
| Substantive Review RateShare of decided pull requests that received a substantive review. | 6.0% | 7.5 | 50 | 20 April to 17 October 2026 | primaryraw/pr_window/rolldown__tsdown.json |
Accessibility
| Parameter | Value | Score | Count | Window | Source |
|---|---|---|---|---|---|
| Developer ExperienceDeveloper experience, 0 to 100: half CI run time, half setup signals. | 50 | 50.0 | 30 | — | primaryraw/actions_runs/rolldown__tsdown.json |
| Newcomer ConversionShare of first-time authors whose first pull request merged within 180 days. | 77.8% | 100.0 | 18 | — | primaryraw/author_history/rolldown__tsdown.json |
| Newcomer Issue SupplyOpen, unassigned, up-to-date issues marked for newcomers. | 0 | 0.0 | — | — | primaryraw/gfi/rolldown__tsdown.json |
| Newcomer Return RateShare of those merged first-time authors who sent a second pull request within 90 days. | 14.3% | 28.6 | 14 | — | primaryraw/author_history/rolldown__tsdown.json |
Persona view
| Persona | Rank | Score | Tier | Status |
|---|---|---|---|---|
| Balanced | 992 of 3,219 | 55.44 | B | Rated |
| First-timer | 580 of 1,525 | 59.32 | B | Rated |
| Career capital | This repository's production-criticality signal is not yet high enough for career-capital ranking. | |||
| Senior systems | Fewer than 3 organizations account for most commits (not multi-vendor). | |||
| AI-assisted | 946 of 3,696 | 56.88 | B | Rated |
Integrity
- Snapshot
- 2026-10-17
- Raw hash
- 537343bbfe1b11f93283e51aeea7a0060aaea6a8da24a04b17cc740ce66ea3f0
No suspicion flags on this repository.
The full record is in data/2026-10-17/repos/89.json, under the key rolldown/tsdown.
How every number is measured: Porchlamp methodology.
Open an issue about this record and say what looks wrong.
Porchlamp (2026). rolldown/tsdown. Snapshot 2026-10-17. https://porchlamp.org/projects/rolldown/tsdown/. CC BY 4.0.
Similar projects
The ranked projects nearest this one in the same ecosystem.
- select2/select2 (rank 983)
- bendlang/bend (rank 988)
- eclipse-theia/theia (rank 993)
- gethomepage/homepage (rank 998)
- remeda/remeda (rank 999)