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zloirock/core-js

Establishedrank #103

Standard Library

25.5k+56 · 7d 1.7k 100est. MITJavaScriptpushed 38m ago
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Composite

67

conf 65%

Momentum

47

conf 60%

Vitality (PVI)

74

conf 67%

Community

62

conf 60%

Security & maint.

95

conf 85%

Ecosystem influence

68

conf 60%

Opportunity

59

conf 60%

Breakout · 7d

47%

conf 71%

Executive summary

core-js is currently classified as established with a composite score of 67/100. Momentum (47) and vitality (74) are aligned — growth is backed by sustained maintenance. Estimated 7-day gain of 56 stars against a 25.5k-star base. Risk is assessed as low; the interpretable model puts its probability of entering the top trend cohort within 7 days at 47%.

90-day trajectory

+229 · 30d
2026-08-012026-10-29

Score breakdown

Every input, weight and normalized value — nothing hidden. Inputs marked est. are estimated until the full ingestion pipeline lands.

Momentum

Star velocityest.25%49
Star accelerationest.15%52
Fork velocityest.10%32
Contributor growthest.10%53
Issue activity growthest.10%38
PR activity growthest.10%85
External mention velocityest.10%2
Release event impactest.5%69
Trending-rank persistenceest.5%53

Model tn-interpretable-1.0.0 · confidence 60% · coverage 100%

Project Vitality Index

Commit consistency20%100
Release cadenceest.15%64
PR responsivenessest.15%73
Issue responsivenessest.15%62
Contributor diversityest.10%74
Maintainer continuityest.10%87
Documentation qualityest.5%55
Dependency freshnessest.5%49
Security hygieneest.5%64

Model tn-interpretable-1.0.0 · confidence 67% · coverage 100%

Security & maintenance

Release recency25%100
License clarity20%92
Maintenance status25%100
Dependency stalenessest.15%86
Bus factorest.15%93

Model tn-interpretable-1.0.0 · confidence 85% · coverage 100%

Ecosystem influence

Dependent repositoriesest.30%80
Quality-weighted dependentsest.20%81
Documentation citationsest.15%70
Contributor overlapest.15%28
Registry adoptionest.10%34
Topic centralityest.10%100

Model tn-interpretable-1.0.0 · confidence 60% · coverage 92% · missing: packageRegistryAdoption