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 preactjs/signals, the reply time and the share with no reply within 14 days both have too small a sample to measure (0 and 8 pull requests counted; 10 needed). It ranks 1,899 of 3,219 overall. It is not ranked for first-time contributors: not enough evidence to show under this lens.

Key facts
Rank1,899 of 3,219
Score48.05
TierC
Median first reply—
14-day no-reply share—
First-timer rankNot enough evidence to show under this lens.
EcosystemJavaScript
Window—

Composite

Rank
1,899 of 3,219
Score
48.05
Tier
C
Coverage
70% · Ceiling B
Quadrant
Nursery

Coordinates: leverage 49.0 (coverage 100%), friction 50.0 (coverage 45%)

Five pillars

Score out of 100, and how much of the pillar was measured
PillarScoreCoverage
Responsiveness61.310%
Criticality50.2100%
Governance50.5100%
Rigor46.0100%
Accessibility21.050%

The measured parameters

Responsiveness

ParameterValueScoreCountWindowSource
Decision Rate (90d)Share of outside pull requests that were merged or closed within 90 days.Not shown: Insufficient sample size
PR Ghost Rate (14d)Share of outside pull requests with no maintainer response, merge or close within 14 days.Not shown: Insufficient sample size
First-timer Merge RateShare of first-time outside authors' decided pull requests that were merged.Not shown: Insufficient sample size
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.190.5 hours (7.9 days)61.31319 April to 16 October 2026primaryraw/pr_window/preactjs__signals.json

Criticality

ParameterValueScoreCountWindowSource
DependentsPackages in the registry that depend on this project, counted once each.6143.8——primaryraw/dependents/preactjs__signals.json
Monthly DownloadsDownloads from the package registry in a month.10.8 million downloads a month71.1——primaryraw/downloads/npm__signals.json
OpenSSF CriticalityOpenSSF criticality score from 0 to 1, computed from the project's public activity signals.0.426642.7——primaryraw/github_meta/preactjs__signals.json

Governance

ParameterValueScoreCountWindowSource
Elephant FactorThe fewest organisations that account for half of the last year's commits.125.0239—primaryraw/commits_365d/preactjs__signals.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/preactjs__signals.json
Promotion LadderHow openly a contributor can become a maintainer, from closed to verified.No written path to becoming a maintainer40.0——primaryraw/governance/preactjs__signals.json

Rigor

ParameterValueScoreCountWindowSource
AI Policy PostureWhether the project has a written policy on AI-assisted contributions.No written AI policy40.0——primaryraw/governance/preactjs__signals.json
Pipeline DefensesHow well the project's build and review pipeline defends against bad changes, 0 to 100.79.230879.252—proxy:review_ciraw/pr_window/preactjs__signals.json
Substantive Review RateShare of decided pull requests that received a substantive review.6.3%7.81619 April to 16 October 2026primaryraw/pr_window/preactjs__signals.json

Accessibility

ParameterValueScoreCountWindowSource
Developer ExperienceDeveloper experience, 0 to 100: half CI run time, half setup signals.7070.030—primaryraw/actions_runs/preactjs__signals.json
Newcomer ConversionShare of first-time authors whose first pull request merged within 180 days.Not shown: Insufficient sample size
Newcomer Issue SupplyOpen, unassigned, up-to-date issues marked for newcomers.00.0——primaryraw/gfi/preactjs__signals.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
Balanced1,899 of 3,21948.05CRated
First-timerNot enough evidence to show under this lens.
Career capitalThis repository's production-criticality signal is not yet high enough for career-capital ranking.
Senior systemsFewer than 3 organizations account for most commits (not multi-vendor).
AI-assisted2,141 of 3,69648.11CRated

Integrity

Snapshot
2026-10-17
Raw hash
976e2e9494741263227821ca9afd572e9325297f90759f09fb2e5c66d5d7afa4

No suspicion flags on this repository.

The full record is in data/2026-10-17/repos/49.json, under the key preactjs/signals.

How every number is measured: Porchlamp methodology.

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

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

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