Public record
Software health reportschema 0.34.0 · metrics 2.10.0 · 2026-09-17 15:45 UTC

typestack / class-validator

Decorator-based property validation for classes.

TypeScriptMIT★ 11,838 stars⑂ 848 forkssince Oct 2015View on GitHub ↗
KindLibraryhow this is determined
#validation#validator#decorators#typescript

typestack/class-validator holds a health index of 77 out of 100, placing it in the Good band. It scores highest on Community & Adoption (90/100) and lowest on Vitality (39/100). It was last updated 175 days ago. 2 contributors account for most of its recent work.

77
overall / 100
Good

Software health index

Metrics are grouped into weighted categories on one standardized 1–100 scale. Overall starts as their weighted mean, calibrated against the distribution of the public record so bands carry percentile meaning; when public evidence triggers the High-Risk Jurisdiction Policy, the rating is adjusted and receives an At Risk ceiling of 34.

77
Exceptional93-100The record's top tier (≈ top 5%); essentially all checked criteria met
Excellent80-92Strong across the board; minor gaps
Good65-79Healthy; gaps are limited and manageable
Moderate50-64Acceptable with notable gaps; review recommended
Weak35-49Material weaknesses across several areas
At Risk20-34Significant weaknesses; adoption warrants caution
Critical1-19Severe problems (abandoned, single-maintainer, no hygiene)
VitalityCommunity &AdoptionSustainability &GovernanceEngineeringQualitySecurityAI Readiness

Score profile

Each axis is a category. The shape matters more than the average — a healthy subject fills the whole shape, while a spike-and-crater profile means strength in one dimension is masking risk in another.

The weighted overall 66 is calibrated to 77 on the published index scale (record calibration 2026-08-02).

Ownership

TypeStackOrganization
513 followers9 public repossince Dec 2016

This repository is backed by an organization — shared, accountable stewardship that can outlive any single maintainer.

Package ecosystems

RegistryPackageVersionDownloads / moVersionsLast publish
npmclass-validator0.15.143,942,87562203 days ago

Metrics by category

Vitality

Is the project alive — is code being written and are releases shipping?

39Weak · 21% of overall

Development activity

24At Risk
How it's scored
9.9/36Push recency — last push 175 days ago
2.8/36Commit cadence — 4/52 weeks with commits
11.1/18Commit volume — 16 commits in the last year
0/10OpenSSF Scorecard: Maintained — 0 commit(s) and 0 issue activity found in the last 90 days -- score normalized to 0
Inputs used
commits_last_year16
human_commit_share0.27
days_since_last_push175
active_weeks_last_year4

Release discipline

62Moderate
How it's scored
27/27Ships releases — 10 releases published
16.2/36Release recency — latest release 203 days ago
12.6/27Release cadence — a release every ~208 days
0/10OpenSSF Scorecard: Signed-Releases — no data
Inputs used
releases_count10
latest_release_tagv0.15.1
releases_from_tagsno
days_since_latest_release203
mean_days_between_releases208
Excluded from scoring (no data or not applicable): OpenSSF Scorecard: Signed-Releases. Remaining weights renormalized.

Community & Adoption

Does the project have users, downloads, attention, and a welcoming setup for contributors?

90Excellent · 17% of overall

Popularity & adoption

94Exceptional
How it's scored
60/60Stars — 11,838 stars
24.4/25Forks — 848 forks
10.1/15Watchers — 66 watchers
Inputs used
forks848
stars11,838
watchers66
growth_stateunverified
growth_factor_pct100
growth_unverified_reasonno_history

Community health

77Good
How it's scored
22.5/22.5README
22.5/22.5License — recognized license (MIT)
18/18CONTRIBUTING guide
0/13.5Code of conduct
0/7.2Issue template
6.3/6.3PR template
Inputs used
has_readmeyes
has_licenseyes
readme_badges3
has_contributingyes
has_issue_templateno
has_code_of_conductno
readme_badge_servicesbadge.fury.io, codecov.io, github.com
has_pull_request_templateyes

Ecosystem adoption (downloads)

100Exceptional
How it's scored
80/80Monthly downloads — 43,942,875 downloads/month across npm
0/20Registry dependents — not reported by this ecosystem
Inputs used
packagesclass-validator
dependents—
ecosystemsnpm
total_downloads—
monthly_downloads43,942,875
unverified_packages_excluded—
Excluded from scoring (no data or not applicable): Registry dependents. Remaining weights renormalized.

Sustainability & Governance

Will the project survive its people — bus factor, responsiveness, who backs it, and package upkeep?

71Good · 23% of overall

Maintainer resilience (bus factor)

61Moderate
How it's scored
25.2/54Bus factor — 2 contributor(s) cover half of all commits
12.7/22.5Commit distribution — top contributor authored 44% of commits
13.5/13.5Contributor breadth — 98 contributors
10/10OpenSSF Scorecard: Contributors — project has 14 contributing companies or organizations
Inputs used
bus_factor2
contributors_sampled98
top_contributor_share0.435

Issue & PR responsiveness

68Good
How it's scored
31.1/42Issue resolution — 74% of issues closed
20.8/30PR acceptance — 1,066/1,535 decided PRs merged
0/13Newcomer PR acceptance — no first-time contributor's PR decided in 30d
7.5/15OpenSSF Scorecard: Code-Review — Found 10/20 approved changesets -- score normalized to 5
Inputs used
merged_prs1,066
open_issues278
closed_issues794
prs_merged_7d0
prs_decided_7d0
prs_merged_30d0
prs_decided_30d0
issue_closed_ratio0.741
closed_unmerged_prs469
first_time_authors_30d0
first_time_prs_merged_30d0
first_time_prs_decided_30d0
Excluded from scoring (no data or not applicable): Newcomer PR acceptance. Remaining weights renormalized.

Ownership & stewardship

69Good
How it's scored
30/30Ownership backing — organization-owned
0/20Verified domain
19.5/25Owner reach — 513 followers of typestack
19.3/25Track record — 9 public repos, account ~9 yr old
Inputs used
followers513
owner_typeOrganization
is_verifiedno
owner_logintypestack
public_repos9
account_age_days3,562

Package maintenance

91Excellent
How it's scored
25/25Published & resolvable — 1 package(s) on npm
26/35Publish recency — latest publish 203 days ago
20/20Version history — 62 published versions
20/20Not deprecated — active, not deprecated or yanked
Inputs used
packagesclass-validator
ecosystemsnpm
any_deprecatedno
min_days_since_publish203

Engineering Quality

Are baseline engineering and documentation practices in place?

74Good · 19% of overall

Engineering practices

74Good
How it's scored
24/24CI workflows — 4 workflow(s)
24/24Tests present
16/16Linter config — .eslintrc.yml
0/9.6Pre-commit hooks
0/6.4.editorconfig
10/20OpenSSF Scorecard: CI-Tests — 16 out of 29 merged PRs checked by a CI test -- score normalized to 5
Inputs used
has_ciyes
has_testsyes
has_editorconfigno
has_linter_configyes
has_precommit_configno

Documentation

75Good
How it's scored
30/30README
25/25Documentation directory
0/15Documentation / homepage site
10/10Repository description
10/10Topics — 4 topics
0/10Wiki
Inputs used
topicsvalidation, validator, decorators, typescript
has_wikino
homepage—
docs_site—
has_readmeyes
has_docs_diryes
has_descriptionyes

Security

Are visible security and supply-chain practices strong, without unresolved high-risk jurisdiction exposure?

59Moderate · 16% of overall

Security posture

49Weak
How it's scored
7.5/7.5Binary-Artifacts — no binaries found in the repo
6/7.5Branch-Protection — branch protection is not maximal on development and all release branches
1.2/2.5CI-Tests — 16 out of 29 merged PRs checked by a CI test -- score normalized to 5
0/2.5CII-Best-Practices — no effort to earn an OpenSSF best practices badge detected
3.8/7.5Code-Review — Found 10/20 approved changesets -- score normalized to 5
2.5/2.5Contributors — project has 14 contributing companies or organizations
10/10Dangerous-Workflow — no dangerous workflow patterns detected
7.5/7.5Dependency-Update-Tool — update tool detected
0/5Fuzzing — project is not fuzzed
2.5/2.5License — license file detected
0/7.5Maintained — 0 commit(s) and 0 issue activity found in the last 90 days -- score normalized to 0
5/5Packaging — packaging workflow detected
2/5Pinned-Dependencies — dependency not pinned by hash detected -- score normalized to 4
0/5SAST — SAST tool is not run on all commits -- score normalized to 0
0/5Security-Policy — security policy file not detected
0/7.5Signed-Releases — no data
0/7.5Token-Permissions — detected GitHub workflow tokens with excessive permissions
0/7.5Vulnerabilities — 18 existing vulnerabilities detected
Inputs used
sourceopenssf_scorecard
checks_evaluated17
scorecard_versionv5.5.0
checks_inconclusive1
scorecard_aggregate4.9
Excluded from scoring (no data or not applicable): Signed-Releases. Remaining weights renormalized.

Dependency advisories

100Exceptional
How it's scored
35/35Direct dependencies free of known advisories — no direct dependency carries a known advisory
25/25Indirect dependencies free of known advisories — no indirect dependency carries a known advisory
0/40No advisories left outstanding — no advisory carries a publication date
Inputs used
sourceosv
advisories0
affected_packages0
assessed_packages3
unassessed_packages0
affected_by_severitynone
direct_affected_packages0
Excluded from scoring (no data or not applicable): No advisories left outstanding. Remaining weights renormalized. Matched the npm:class-validator@0.15.1 runtime dependency closure — what installing the published package pulls in — 3 packages. Reachability is not analyzed.

AI Readiness

How well is the repo equipped to be developed and maintained with AI coding agents? Carries a deliberately small weight (4%): agent tooling is a real maintenance signal, but a repository with none can still reach 100/100.

68Good · 4% of overall

Agent context & guidance

40Weak
How it's scored
0/45Agent instructions — no CLAUDE.md / AGENTS.md / editor rules
0/15Machine-readable docs (llms.txt)
40/40Legible commit history — 27 of 27 human commits state their intent (structured subject or explanatory body)
Inputs used
has_llms_txtno
llms_txt_url—
legible_history_share1
agent_instruction_files—
agent_instruction_max_bytes—

Verify loop (build / test / typecheck)

66Good
How it's scored
0/18One-command bootstrap
22/22Automated tests
11/11Lint / format config — .eslintrc.yml
11/11Static type checking — tsconfig.json
10/10Reproducible environment — lockfile
0/10Demonstrated agent practice — no agent-authored commits among the last 100
8/8Automated maintenance — 73 of the last 100 commits are automated dependency updates
4/10OpenSSF Scorecard: Pinned-Dependencies — dependency not pinned by hash detected -- score normalized to 4
Inputs used
has_nixno
has_testsyes
lockfilespackage-lock.json
has_dockerfileno
typed_languageyes
bootstrap_files—
has_devcontainerno
has_linter_configyes
typecheck_configstsconfig.json
agent_commit_share0
toolchain_manifests—
dependency_bot_commit_share0.73

Code legibility for models

100Exceptional
How it's scored
45/45Type-checkable code — TypeScript (statically typed)
54.7/55Manageable file sizes — 1/178 source files over 60KB
Inputs used
primary_languageTypeScript
largest_source_bytes162,878
source_files_sampled178
oversized_source_files1

Machine-readable interfaces

100Exceptional
How it's scored
0/40API schema (OpenAPI/GraphQL/proto) — not applicable to this kind of software
0/20MCP server — not applicable to this kind of software
40/40Runnable examples — sample
Inputs used
example_dirssample
has_mcp_signalno
api_schema_files—
interfaces_expected_of—
Excluded from scoring (no data or not applicable): API schema (OpenAPI/GraphQL/proto), MCP server. Remaining weights renormalized.

Key facts

11,838GitHub stars
98contributors
16commits, last 12 months
175days since last push
10releases
2bus factor
278open issues
npmpackage ecosystems

Data collection warnings

  • Star history unavailable: GitHub GraphQL error: Resource not accessible by personal access token

More detail

Star and fork history 0 ★ / 848 ⇿
0Stars
848Forks
10Releases

When each star and fork was added, collected from GitHub and bucketed by day. Cumulative growth sits directly above the daily additions it is made of, so the two read against each other: steady organic accretion looks nothing like an abrupt, short-lived burst. Where that difference is measurable, it is reported as growth authenticity.

02004006008001,000814102016-042021-062026-08
Major 0Minor 3Patch 7

Each point covers 10 days.

OpenSSF Scorecard 4.9 / 10
4.9aggregate

Independent, tool-agnostic security assessment from the open-source OpenSSF Scorecard. Each check rewards a security practice, not a specific vendor's tool. Checks Scorecard could not determine are marked n/a and excluded from the security score (never counted as zero).Scorecard v5.5.0 · 2026-09-17 15:44 UTC

10Binary-Artifactsno binaries found in the repo
8Branch-Protectionbranch protection is not maximal on development and all release branches
5CI-Tests16 out of 29 merged PRs checked by a CI test -- score normalized to 5
0CII-Best-Practicesno effort to earn an OpenSSF best practices badge detected
5Code-ReviewFound 10/20 approved changesets -- score normalized to 5
10Contributorsproject has 14 contributing companies or organizations
10Dangerous-Workflowno dangerous workflow patterns detected
10Dependency-Update-Toolupdate tool detected
0Fuzzingproject is not fuzzed
10Licenselicense file detected
0Maintained0 commit(s) and 0 issue activity found in the last 90 days -- score normalized to 0
10Packagingpackaging workflow detected
4Pinned-Dependenciesdependency not pinned by hash detected -- score normalized to 4
0SASTSAST tool is not run on all commits -- score normalized to 0
0Security-Policysecurity policy file not detected
n/aSigned-Releasesno releases found
0Token-Permissionsdetected GitHub workflow tokens with excessive permissions
0Vulnerabilities18 existing vulnerabilities detected
Direct dependencies 3
RegistryPackageVersion constraintManifest
npm@types/validator^13.15.3package.json
npmlibphonenumber-js^1.11.1package.json
npmvalidator^13.15.22package.json
All dependencies 476

Full resolved dependency set from the GitHub dependency graph: 3 direct and 473 indirect (transitive) packages. The transitive closure is complete when the repository commits a lockfile.

RegistryPackageVersionRelation
npm@types/validator13.15.3direct
npmlibphonenumber-js1.11.1direct
npmvalidator13.15.22direct
npm@aashutoshrathi/word-wrap1.2.6indirect
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npm@babel/generator7.23.0indirect
npm@babel/helper-compilation-targets7.20.0indirect
npm@babel/helper-environment-visitor7.22.20indirect
npm@babel/helper-function-name7.23.0indirect
npm@babel/helper-hoist-variables7.22.5indirect
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npm@babel/helper-plugin-utils7.22.5indirect
npm@babel/helper-simple-access7.20.2indirect
npm@babel/helper-split-export-declaration7.22.6indirect
npm@babel/helper-string-parser7.27.1indirect
npm@babel/helper-validator-identifier7.28.5indirect
npm@babel/helper-validator-option7.18.6indirect
npm@babel/helpers7.28.6indirect
npm@babel/parser7.29.0indirect
npm@babel/plugin-syntax-async-generators7.8.4indirect
npm@babel/plugin-syntax-bigint7.8.3indirect
npm@babel/plugin-syntax-class-properties7.12.13indirect
npm@babel/plugin-syntax-import-meta7.10.4indirect
npm@babel/plugin-syntax-json-strings7.8.3indirect
npm@babel/plugin-syntax-jsx7.22.5indirect
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npm@babel/plugin-syntax-numeric-separator7.10.4indirect
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npm@babel/plugin-syntax-optional-chaining7.8.3indirect
npm@babel/plugin-syntax-top-level-await7.14.5indirect
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Dependency advisories 0

Installing npm:class-validator@0.15.1 pulls in 3 packages, direct and transitive: 0 carry known advisories, of which 0 are direct dependencies.

No known advisories affect the assessed dependencies.

An advisory means the version recorded in the dependency graph falls inside an advisory’s affected range. Reachability is not analysed, and the graph includes development and test pins — a finding may concern tooling rather than shipped software.

Raw JSON report machine-readable

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Scores are signals, not warranties. They reflect publicly visible practices on GitHub — not a code audit, and not a security guarantee.

Missing data is excluded and weights renormalized, never scored as zero. Methodology is versioned and open: metrics v2.10.0, schema v0.34.0 — full methodology · metrics wiki.

How one result sits in the wider record: aggregate statistics — npm.