PorchlampFind the projects that leave the light on.2026-10-17

What happens to a stranger's pull request here, in the Porchlamp snapshot of 17 October 2026.

For josdejong/mathjs, the reply time has too small a sample to measure (0 pull requests counted; 10 needed). 100% of 37 outside pull requests got no reply within 14 days (20 April to 17 October 2026). It ranks 1,979 of 3,219 overall. For first-time contributors it ranks 1,401 of 1,525 (the bottom 9%).

Key facts
Rank1,979 of 3,219
Score47.36
TierC
Median first reply—
14-day no-reply share100%
First-timer rank1,401 of 1,525
EcosystemJavaScript
Window20 April to 17 October 2026

Composite

Rank
1,979 of 3,219
Score
47.36
Tier
C
Coverage
86% · Ceiling A
Quadrant
Crucible

Coordinates: leverage 55.1 (coverage 91%), friction 59.2 (coverage 82%)

Five pillars

Score out of 100, and how much of the pillar was measured
PillarScoreCoverage
Responsiveness35.870%
Criticality65.1100%
Governance50.5100%
Rigor41.470%
Accessibility38.985%

The measured parameters

Responsiveness

ParameterValueScoreCountWindowSource
Decision Rate (90d)Share of outside pull requests that were merged or closed within 90 days.25.0%31.31610 April to 9 July 2026primaryraw/pr_window/josdejong__mathjs.json
PR Ghost Rate (14d)Share of outside pull requests with no maintainer response, merge or close within 14 days.100.0%0.03720 April to 17 October 2026primaryraw/pr_window/josdejong__mathjs.json
First-timer Merge RateShare of first-time outside authors' decided pull requests that were merged.62.5%78.18—primaryraw/author_history/josdejong__mathjs.json
Time to First ResponseMedian hours from an outside pull request opening to its first substantive human reply.Not shown: Insufficient sample size
Time to Merge (p90)Hours within which 90% of merged outside pull requests were merged.796.6 hours (33.2 days)16.0510 April to 7 October 2026primaryraw/pr_window/josdejong__mathjs.json

Criticality

ParameterValueScoreCountWindowSource
DependentsPackages in the registry that depend on this project, counted once each.1,94178.6——primaryraw/dependents/josdejong__mathjs.json
Monthly DownloadsDownloads from the package registry in a month.15.7 million downloads a month73.6——primaryraw/downloads/npm__mathjs.json
OpenSSF CriticalityOpenSSF criticality score from 0 to 1, computed from the project's public activity signals.0.435543.5——primaryraw/github_meta/josdejong__mathjs.json

Governance

ParameterValueScoreCountWindowSource
Elephant FactorThe fewest organisations that account for half of the last year's commits.125.058—primaryraw/commits_365d/josdejong__mathjs.json
Legal IP RegimeThe contributor licence regime: DCO, none, a foundation CLA or a corporate CLA.No CLA or sign-off found85.0——primaryraw/governance/josdejong__mathjs.json
Promotion LadderHow openly a contributor can become a maintainer, from closed to verified.No written path to becoming a maintainer40.0——primaryraw/governance/josdejong__mathjs.json

Rigor

ParameterValueScoreCountWindowSource
AI Policy PostureWhether the project has a written policy on AI-assisted contributions.No written AI policy40.0——primaryraw/governance/josdejong__mathjs.json
Pipeline DefensesHow well the project's build and review pipeline defends against bad changes, 0 to 100.42.542.5——primaryraw/scorecard/josdejong__mathjs.json
Substantive Review RateShare of decided pull requests that received a substantive review.Not shown: Insufficient sample size

Accessibility

ParameterValueScoreCountWindowSource
Developer ExperienceDeveloper experience, 0 to 100: half CI run time, half setup signals.7070.010—primaryraw/actions_runs/josdejong__mathjs.json
Newcomer ConversionShare of first-time authors whose first pull request merged within 180 days.27.3%54.511—primaryraw/author_history/josdejong__mathjs.json
Newcomer Issue SupplyOpen, unassigned, up-to-date issues marked for newcomers.110.0——primaryraw/gfi/josdejong__mathjs.json
Newcomer Return RateShare of those merged first-time authors who sent a second pull request within 90 days.Not shown: Insufficient sample size

Persona view

PersonaRankScoreTierStatus
Balanced1,979 of 3,21947.36CRated
First-timer1,401 of 1,52542.42CRated
Career capital672 of 79849.43CRated
Senior systemsFewer than 3 organizations account for most commits (not multi-vendor).
AI-assisted2,418 of 3,69646.14CRated

Integrity

Snapshot
2026-10-17
Raw hash
7c34a41ac3a724632d6da5798f477e1848c73a1ab5fca789979d68dc14fc9cdb

No suspicion flags on this repository.

The full record is in data/2026-10-17/repos/f3.json, under the key josdejong/mathjs.

How every number is measured: Porchlamp methodology.

Open an issue about this record and say what looks wrong.

Porchlamp (2026). josdejong/mathjs. Snapshot 2026-10-17. https://porchlamp.org/projects/josdejong/mathjs/. CC BY 4.0.

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