Public record
Software health reportschema 0.34.0 · metrics 2.10.0 · 2026-09-23 08:54 UTC

RunDevelopment / refa

A library for finite automata and regular expressions in the context of JS RegExp

TypeScriptMIT★ 30 stars⑂ 3 forkssince Mar 2020View on GitHub ↗
KindLibraryhow this is determined
#regex#nfa#dfa#regexp#javascript-regexp

RunDevelopment/refa holds a health index of 40 out of 100, placing it in the Weak band. It scores highest on Community & Adoption (60/100) and lowest on Vitality (21/100). It was last updated 828 days ago. A single contributor accounts for most of its recent work.

40
overall / 100
Weak

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.

40
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 48 is calibrated to 47 on the published index scale (record calibration 2026-08-02).

Ownership

Michael SchmidtPersonal account
152 followers56 public repossince Aug 2016

This repository is owned by a personal account. A single-owner project carries more continuity risk than an organization-backed one.

Package ecosystems

RegistryPackageVersionDownloads / moVersionsLast publishTags
npmrefa0.12.116,809,296201105 days agodfanfaregexregexpregularexpression

Metrics by category

Vitality

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

21At Risk · 21% of overall

Development activity

1Critical
How it's scored
0/36Push recency — last push 828 days ago
0/36Commit cadence — 0/52 weeks with commits
0/18Commit volume — 0 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_year0
human_commit_share0.94
days_since_last_push828
active_weeks_last_year0

Release discipline

52Moderate
How it's scored
27/27Ships releases — 18 releases published
0/36Release recency — latest release 1,105 days ago
19.8/27Release cadence — a release every ~110.5 days
0/10OpenSSF Scorecard: Signed-Releases — no data
Inputs used
releases_count18
latest_release_tagv0.12.1
releases_from_tagsno
days_since_latest_release1,105
mean_days_between_releases110.5
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?

60Moderate · 17% of overall

Popularity & adoption

26At Risk
How it's scored
23.7/60Stars — 30 stars
2.5/25Forks — 3 forks
0/15Watchers — 1 watchers
Inputs used
forks3
stars30
watchers1
growth_stateunverified
growth_factor_pct100
growth_unverified_reasonno_history

Community health

70Good
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
0/6.3PR template
Inputs used
has_readmeyes
has_licenseyes
readme_badges2
has_contributingyes
has_issue_templateno
has_code_of_conductno
readme_badge_servicesgithub.com, shields.io
has_pull_request_templateno

Ecosystem adoption (downloads)

100Exceptional
How it's scored
80/80Monthly downloads — 16,809,296 downloads/month across npm
0/20Registry dependents — not reported by this ecosystem
Inputs used
packagesrefa
dependents—
ecosystemsnpm
total_downloads—
monthly_downloads16,809,296
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?

54Moderate · 23% of overall

Maintainer resilience (bus factor)

20At Risk
How it's scored
9/54Bus factor — 1 contributor(s) cover half of all commits
0/22.5Commit distribution — top contributor authored 100% of commits
1.4/13.5Contributor breadth — 1 contributors
10/10OpenSSF Scorecard: Contributors — project has 5 contributing companies or organizations
Inputs used
bus_factor1
contributors_sampled1
top_contributor_share1

Issue & PR responsiveness

75Good
How it's scored
37/42Issue resolution — 88% of issues closed
28/30PR acceptance — 41/44 decided PRs merged
0/13Newcomer PR acceptance — no first-time contributor's PR decided in 30d
0/15OpenSSF Scorecard: Code-Review — Found 0/29 approved changesets -- score normalized to 0
Inputs used
merged_prs41
open_issues4
closed_issues30
prs_merged_7d0
prs_decided_7d0
prs_merged_30d0
prs_decided_30d0
issue_closed_ratio0.882
closed_unmerged_prs3
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

63Moderate
How it's scored
10/30Ownership backing — personal (user) account
0/20Verified domain — not applicable to user accounts
15.7/25Owner reach — 152 followers of RunDevelopment
24.8/25Track record — 56 public repos, account ~10 yr old
Inputs used
followers152
owner_typeUser
is_verified—
owner_loginRunDevelopment
public_repos56
account_age_days3,699
Excluded from scoring (no data or not applicable): Verified domain. Remaining weights renormalized.

Package maintenance

69Good
How it's scored
25/25Published & resolvable — 1 package(s) on npm
4/35Publish recency — latest publish 1,105 days ago
20/20Version history — 20 published versions
20/20Not deprecated — active, not deprecated or yanked
Inputs used
packagesrefa
ecosystemsnpm
any_deprecatedno
min_days_since_publish1,105

Engineering Quality

Are baseline engineering and documentation practices in place?

58Moderate · 19% of overall

Engineering practices

64Moderate
How it's scored
24/24CI workflows — 2 workflow(s)
24/24Tests present
16/16Linter config — .eslintrc.js
0/9.6Pre-commit hooks
0/6.4.editorconfig
0/20OpenSSF Scorecard: CI-Tests — 0 out of 12 merged PRs checked by a CI test -- score normalized to 0
Inputs used
has_ciyes
has_testsyes
has_editorconfigno
has_linter_configyes
has_precommit_configno

Documentation

50Moderate
How it's scored
30/30README
0/25Documentation directory
0/15Documentation / homepage site
10/10Repository description
10/10Topics — 5 topics
0/10Wiki
Inputs used
topicsregex, nfa, dfa, regexp, javascript-regexp
has_wikino
homepage—
docs_site—
has_readmeyes
has_docs_dirno
has_descriptionyes

Security

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

50Moderate · 16% of overall

Security posture

38Weak
How it's scored
7.5/7.5Binary-Artifacts — no binaries found in the repo
0/7.5Branch-Protection — no data
0/2.5CI-Tests — 0 out of 12 merged PRs checked by a CI test -- score normalized to 0
0/2.5CII-Best-Practices — no effort to earn an OpenSSF best practices badge detected
0/7.5Code-Review — Found 0/29 approved changesets -- score normalized to 0
2.5/2.5Contributors — project has 5 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
0/5Packaging — no data
2.5/5Pinned-Dependencies — dependency not pinned by hash detected -- score normalized to 5
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 — 48 existing vulnerabilities detected
Inputs used
sourceopenssf_scorecard
checks_evaluated15
scorecard_versionv5.5.0
checks_inconclusive3
scorecard_aggregate3.8
Excluded from scoring (no data or not applicable): Branch-Protection, Packaging, 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_packages1
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:refa@0.12.1 runtime dependency closure — what installing the published package pulls in — 1 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.

51Moderate · 4% of overall

Agent context & guidance

10Critical
How it's scored
0/45Agent instructions — no CLAUDE.md / AGENTS.md / editor rules
0/15Machine-readable docs (llms.txt)
10.2/40Legible commit history — 18 of 94 human commits state their intent (structured subject or explanatory body)
Inputs used
has_llms_txtno
llms_txt_url—
legible_history_share0.191
agent_instruction_files—
agent_instruction_max_bytes—

Verify loop (build / test / typecheck)

67Good
How it's scored
0/18One-command bootstrap
22/22Automated tests
11/11Lint / format config — .eslintrc.js
11/11Static type checking — scripts/tsconfig.json, tests/tsconfig.json, tsconfig.json
10/10Reproducible environment — lockfile
0/10Demonstrated agent practice — no agent-authored commits among the last 100
8/8Automated maintenance — 6 of the last 100 commits are automated dependency updates
5/10OpenSSF Scorecard: Pinned-Dependencies — dependency not pinned by hash detected -- score normalized to 5
Inputs used
has_nixno
has_testsyes
lockfilespackage-lock.json
has_dockerfileno
typed_languageyes
bootstrap_files—
has_devcontainerno
has_linter_configyes
typecheck_configsscripts/tsconfig.json, tests/tsconfig.json, tsconfig.json
agent_commit_share0
toolchain_manifests—
dependency_bot_commit_share0.06

Code legibility for models

93Exceptional
How it's scored
45/45Type-checkable code — TypeScript (statically typed)
47.6/55Manageable file sizes — 21/157 source files over 60KB
Inputs used
primary_languageTypeScript
largest_source_bytes757,205
source_files_sampled157
oversized_source_files21

Key facts

30GitHub stars
1contributors
0commits, last 12 months
828days since last push
18releases
1bus factor
4open 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 ★ / 3 ⇿
0Stars
3Forks
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.

111222212020-102022-082024-06
Major 0Minor 7Patch 3

Each point covers 4 days.

OpenSSF Scorecard 3.8 / 10
3.8aggregate

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 · 2026-09-23 08:54 UTC

10Binary-Artifactsno binaries found in the repo
n/aBranch-Protectioninternal error: error during branchesHandler.setup: internal error: some github tokens can't read classic branch protection rules: https://github.com/ossf/scorecard-action/blob/main/docs/authentication/fine-grained-auth-token.md
0CI-Tests0 out of 12 merged PRs checked by a CI test -- score normalized to 0
0CII-Best-Practicesno effort to earn an OpenSSF best practices badge detected
0Code-ReviewFound 0/29 approved changesets -- score normalized to 0
10Contributorsproject has 5 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
n/aPackagingpackaging workflow not detected
5Pinned-Dependenciesdependency not pinned by hash detected -- score normalized to 5
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
0Vulnerabilities48 existing vulnerabilities detected
Direct dependencies 1
RegistryPackageVersion constraintManifest
npm@eslint-community/regexpp^4.8.0package.json
All dependencies 396

Full resolved dependency set from the GitHub dependency graph: 1 direct and 395 indirect (transitive) packages. The transitive closure is complete when the repository commits a lockfile.

RegistryPackageVersionRelation
npm@eslint-community/regexpp4.8.0direct
npm@aashutoshrathi/word-wrap1.2.6indirect
npm@babel/code-frame7.22.13indirect
npm@babel/core7.12.0indirect
npm@babel/generator7.23.0indirect
npm@babel/helper-environment-visitor7.22.20indirect
npm@babel/helper-function-name7.23.0indirect
npm@babel/helper-hoist-variables7.22.5indirect
npm@babel/helper-member-expression-to-functions7.12.0indirect
npm@babel/helper-module-imports7.10.4indirect
npm@babel/helper-module-transforms7.12.0indirect
npm@babel/helper-optimise-call-expression7.10.4indirect
npm@babel/helper-replace-supers7.12.0indirect
npm@babel/helper-simple-access7.10.4indirect
npm@babel/helper-split-export-declaration7.22.6indirect
npm@babel/helper-string-parser7.22.5indirect
npm@babel/helper-validator-identifier7.22.20indirect
npm@babel/helpers7.10.4indirect
npm@babel/highlight7.22.20indirect
npm@babel/parser7.23.0indirect
npm@babel/template7.22.15indirect
npm@babel/traverse7.23.2indirect
npm@babel/types7.23.0indirect
npm@cspotcode/source-map-support0.8.1indirect
npm@es-joy/jsdoccomment0.40.1indirect
npm@eslint-community/eslint-utils4.4.0indirect
npm@eslint/eslintrc2.1.2indirect
npm@eslint/js8.47.0indirect
npm@humanwhocodes/config-array0.11.10indirect
npm@humanwhocodes/module-importer1.0.1indirect
npm@humanwhocodes/object-schema1.2.1indirect
npm@istanbuljs/load-nyc-config1.1.0indirect
npm@istanbuljs/schema0.1.2indirect
npm@jridgewell/gen-mapping0.3.2indirect
npm@jridgewell/resolve-uri3.1.0indirect
npm@jridgewell/set-array1.1.2indirect
npm@jridgewell/source-map0.3.2indirect
npm@jridgewell/sourcemap-codec1.4.14indirect
npm@jridgewell/trace-mapping0.3.19indirect
npm@jridgewell/trace-mapping0.3.9indirect
npm@nodelib/fs.scandir2.1.5indirect
npm@nodelib/fs.stat2.0.5indirect
npm@nodelib/fs.walk1.2.8indirect
npm@rollup/plugin-node-resolve9.0.0indirect
npm@rollup/pluginutils3.1.0indirect
npm@tsconfig/node101.0.9indirect
npm@tsconfig/node121.0.11indirect
npm@tsconfig/node141.0.3indirect
npm@tsconfig/node161.0.3indirect
npm@types/chai4.2.22indirect
npm@types/detect-indent0.1.30indirect
npm@types/estree0.0.39indirect
npm@types/glob5.0.30indirect
npm@types/json-schema7.0.12indirect
npm@types/minimatch3.0.3indirect
npm@types/mkdirp0.3.29indirect
npm@types/mocha9.0.0indirect
npm@types/node12.20.13indirect
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npm@typescript-eslint/types6.4.1indirect
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npm@typescript-eslint/utils6.4.1indirect
npm@typescript-eslint/visitor-keys6.4.1indirect
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npm@unicode/unicode-15.0.01.4.2indirect
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npmdebug4.3.3indirect
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npmmerge21.4.1indirect
npmmicromatch4.0.5indirect
npmminimatch3.1.2indirect
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npmminimist1.2.6indirect
npmmkdirp0.5.4indirect
npmmocha9.2.2indirect
npmms2.1.2indirect
npmms2.1.3indirect
npmnanoid3.3.1indirect
npmnatural-compare1.4.0indirect
npmneo-async2.6.2indirect
npmnode-preload0.2.1indirect
npmnormalize-path3.0.0indirect
npmnyc15.1.0indirect
npmonce1.4.0indirect
npmoptionator0.9.3indirect
npmp-limit2.2.2indirect
npmp-limit3.1.0indirect
npmp-locate4.1.0indirect
npmp-locate5.0.0indirect
npmp-map3.0.0indirect
npmp-try2.2.0indirect
npmpackage-hash4.0.0indirect
npmparent-module1.0.1indirect
npmpath-exists4.0.0indirect
npmpath-is-absolute1.0.1indirect
npmpath-key3.1.1indirect
npmpath-parse1.0.7indirect
npmpath-type4.0.0indirect
npmpathval1.1.1indirect
npmpicomatch2.3.1indirect
npmpkg-dir4.2.0indirect
npmprelude-ls1.2.1indirect
npmprettier2.8.7indirect
npmprettier-linter-helpers1.0.0indirect
npmprocess-on-spawn1.0.0indirect
npmprompts2.4.2indirect
npmpunycode2.1.1indirect
npmqueue-microtask1.2.3indirect
npmrandombytes2.1.0indirect
npmreaddirp3.6.0indirect
npmrechoir0.8.0indirect
npmregexp-tree0.1.23indirect
npmrelease-zalgo1.0.0indirect
npmrequire-directory2.1.1indirect
npmrequire-from-string2.0.2indirect
npmrequire-main-filename2.0.0indirect
npmresolve1.22.1indirect
npmresolve-from4.0.0indirect
npmresolve-from5.0.0indirect
npmreusify1.0.4indirect
npmrimraf3.0.2indirect
npmrollup2.47.0indirect
npmrollup-plugin-terser7.0.2indirect
npmrun-parallel1.2.0indirect
npmsafe-buffer5.1.2indirect
npmsafe-regex2.1.1indirect
npmsemver5.7.1indirect
npmsemver6.3.0indirect
npmsemver7.3.8indirect
npmsemver7.5.4indirect
npmsemver-try-require6.0.0indirect
npmserialize-javascript4.0.0indirect
npmserialize-javascript6.0.0indirect
npmset-blocking2.0.0indirect
npmshebang-command2.0.0indirect
npmshebang-regex3.0.0indirect
npmshiki0.14.1indirect
npmsignal-exit3.0.3indirect
npmsisteransi1.0.5indirect
npmslash3.0.0indirect
npmsource-map0.5.7indirect
npmsource-map0.6.1indirect
npmsource-map-support0.5.21indirect
npmspawn-wrap2.0.0indirect
npmspdx-exceptions2.3.0indirect
npmspdx-expression-parse3.0.1indirect
npmspdx-license-ids3.0.9indirect
npmsprintf-js1.0.3indirect
npmstring-width4.2.0indirect
npmstrip-ansi6.0.1indirect
npmstrip-bom3.0.0indirect
npmstrip-bom4.0.0indirect
npmstrip-json-comments3.1.1indirect
npmsupports-color5.5.0indirect
npmsupports-color7.2.0indirect
npmsupports-color8.1.1indirect
npmsupports-preserve-symlinks-flag1.0.0indirect
npmtapable2.2.1indirect
npmteamcity-service-messages0.1.14indirect
npmterser5.14.2indirect
npmtest-exclude6.0.0indirect
npmtext-table0.2.0indirect
npmto-fast-properties2.0.0indirect
npmto-regex-range5.0.1indirect
npmts-api-utils1.0.2indirect
npmts-node10.9.1indirect
npmtsconfig-paths4.1.2indirect
npmtsconfig-paths-webpack-plugin4.0.0indirect
npmtype-check0.4.0indirect
npmtype-detect4.0.8indirect
npmtype-fest0.20.2indirect
npmtype-fest0.8.1indirect
npmtypedarray-to-buffer3.1.5indirect
npmtypedoc0.24.8indirect
npmtypescript5.0.2indirect
npmuglify-js3.12.7indirect
npmuri-js4.2.2indirect
npmuuid3.4.0indirect
npmv8-compile-cache-lib3.0.1indirect
npmvscode-oniguruma1.7.0indirect
npmvscode-textmate8.0.0indirect
npmwatskeburt0.9.0indirect
npmwhich2.0.2indirect
npmwhich-module2.0.0indirect
npmwordwrap1.0.0indirect
npmworkerpool6.2.0indirect
npmwrap-ansi6.2.0indirect
npmwrap-ansi7.0.0indirect
npmwrappy1.0.2indirect
npmwrite-file-atomic3.0.3indirect
npmy18n4.0.1indirect
npmy18n5.0.8indirect
npmyallist4.0.0indirect
npmyargs15.4.1indirect
npmyargs16.2.0indirect
npmyargs-parser18.1.3indirect
npmyargs-parser20.2.4indirect
npmyargs-unparser2.0.0indirect
npmyn3.1.1indirect
npmyocto-queue0.1.0indirect
Dependency advisories 0

Installing npm:refa@0.12.1 pulls in 1 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.

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62es-shims/String.prototype.matchAllSpec-compliant polyfill for String.prototype.matchAll, in ES2020Moderate56inspect-js/is-regexIs this value a JS regex?Moderate53sindresorhus/matcherSimple wildcard matchingModerate50sindresorhus/identifier-regexRegular expression for matching JavaScript identifiersModerate48sindresorhus/super-regexMake a regular expression time out if it takes too long to executeWeak45micromatch/is-globIf you use globs, this will make your code faster. Returns `true` if the given string looks like a glob pattern or an extglob pattern. This makes it easy to create code that only uses external modules like node-glob when necessary, resulting in much faster code execution and initialization time, and a better user experience. 55+ million downloads. Weak

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.