Public record
Software health reportschema 0.34.0 · metrics 2.10.0 · 2026-09-19 13:41 UTC

darklang / dark

Darklang main repo, including language, backend, and infra

F#Apache-2.0★ 2,168 stars⑂ 115 forkssince Dec 2016View on GitHub ↗

darklang/dark holds a health index of 87 out of 100, placing it in the Excellent band. It scores highest on Vitality (94/100) and lowest on Security (58/100). It was last updated 1 day ago. A single contributor accounts for most of its recent work.

87
overall / 100
Excellent

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.

87
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 73 is calibrated to 87 on the published index scale (record calibration 2026-08-02).

Ownership

darklangOrganization
325 followers35 public repossince Oct 2017

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

Metrics by category

Vitality

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

94Exceptional · 21% of overall
How it's scored
36/36Push recency — last push 1 days ago
32.5/36Commit cadence — 47/52 weeks with commits
18/18Commit volume — 2,033 commits in the last year
10/10OpenSSF Scorecard: Maintained — 30 commit(s) and 0 issue activity found in the last 90 days -- score normalized to 10
Inputs used
commits_last_year2,033
human_commit_share0.99
days_since_last_push1
active_weeks_last_year47
How it's scored
27/27Ships releases — 33 releases published
36/36Release recency — latest release 6 days ago
27/27Release cadence — a release every ~12.1 days
0/10OpenSSF Scorecard: Signed-Releases — Project has not signed or included provenance with any releases.
Inputs used
releases_count33
latest_release_tagv0.0.35
releases_from_tagsno
days_since_latest_release6
mean_days_between_releases12.1

Community & Adoption

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

82Excellent · 17% of overall
How it's scored
54.1/60Stars — 2,168 stars
17.1/25Forks — 115 forks
8/15Watchers — 29 watchers
Inputs used
forks115
stars2,168
watchers29
growth_stateunverified
growth_factor_pct100
growth_unverified_reasonno_history

Community health

85Excellent
How it's scored
22.5/22.5README
22.5/22.5License — recognized license (Apache-2.0)
18/18CONTRIBUTING guide
13.5/13.5Code of conduct
0/7.2Issue template
0/6.3PR template
Inputs used
has_readmeyes
has_licenseyes
readme_badges0
has_contributingyes
has_issue_templateno
has_code_of_conductyes
readme_badge_services—
has_pull_request_templateno

Sustainability & Governance

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

64Moderate · 23% of overall
How it's scored
9/54Bus factor — 1 contributor(s) cover half of all commits
10.3/22.5Commit distribution — top contributor authored 54% of commits
13.5/13.5Contributor breadth — 58 contributors
10/10OpenSSF Scorecard: Contributors — project has 21 contributing companies or organizations
Inputs used
bus_factor1
contributors_sampled58
top_contributor_share0.542
How it's scored
39.8/42Issue resolution — 95% of issues closed
26.7/30PR acceptance — 4,225/4,753 decided PRs merged
0/13Newcomer PR acceptance — no first-time contributor's PR decided in 30d
6/15OpenSSF Scorecard: Code-Review — Found 2/5 approved changesets -- score normalized to 4
Inputs used
merged_prs4,225
open_issues45
closed_issues812
prs_merged_7d10
prs_decided_7d11
prs_merged_30d52
prs_decided_30d54
issue_closed_ratio0.947
closed_unmerged_prs528
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.
How it's scored
30/30Ownership backing — organization-owned
0/20Verified domain
18.1/25Owner reach — 325 followers of darklang
23.3/25Track record — 35 public repos, account ~8 yr old
Inputs used
followers325
owner_typeOrganization
is_verifiedno
owner_logindarklang
public_repos35
account_age_days3,259

Engineering Quality

Are baseline engineering and documentation practices in place?

66Good · 19% of overall
How it's scored
0/24CI workflows
24/24Tests present
0/16Linter config
0/9.6Pre-commit hooks
6.4/6.4.editorconfig
20/20OpenSSF Scorecard: CI-Tests — 5 out of 5 merged PRs checked by a CI test -- score normalized to 10
Inputs used
has_cino
has_testsyes
has_editorconfigyes
has_linter_configno
has_precommit_configno

Documentation

90Excellent
How it's scored
30/30README
25/25Documentation directory
15/15Documentation / homepage site — https://darklang.com
10/10Repository description
10/10Topics — 4 topics
0/10Wiki
Inputs used
topicsprogramming-language, cloud, functional-programming, editor
has_wikino
homepagehttps://darklang.com
docs_sitehttps://darklang.com
has_readmeyes
has_docs_diryes
has_descriptionyes

Security

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

58Moderate · 16% of overall
How it's scored
7.5/7.5Binary-Artifacts — no binaries found in the repo
0/7.5Branch-Protection — no data
2.5/2.5CI-Tests — 5 out of 5 merged PRs checked by a CI test -- score normalized to 10
0/2.5CII-Best-Practices — no effort to earn an OpenSSF best practices badge detected
3/7.5Code-Review — Found 2/5 approved changesets -- score normalized to 4
2.5/2.5Contributors — project has 21 contributing companies or organizations
0/10Dangerous-Workflow — no data
7.5/7.5Dependency-Update-Tool — update tool detected
0/5Fuzzing — project is not fuzzed
2.5/2.5License — license file detected
7.5/7.5Maintained — 30 commit(s) and 0 issue activity found in the last 90 days -- score normalized to 10
0/5Packaging — no data
0/5Pinned-Dependencies — dependency not pinned by hash detected -- score normalized to 0
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 — Project has not signed or included provenance with any releases.
0/7.5Token-Permissions — no data
2.2/7.5Vulnerabilities — 7 existing vulnerabilities detected
Inputs used
sourceopenssf_scorecard
checks_evaluated14
scorecard_versionv5.5.0
checks_inconclusive4
scorecard_aggregate4.7
Excluded from scoring (no data or not applicable): Branch-Protection, Dangerous-Workflow, Packaging, Token-Permissions. Remaining weights renormalized.

Dependency advisories

100Exceptional
How it's scored
35/35Direct dependencies free of known advisories — no direct dependency carries a known advisory
0/25Indirect dependencies free of known advisories — transitive set not separable from development and test dependencies in this scope
0/40No advisories left outstanding — no advisory carries a publication date
Inputs used
sourceosv
advisories7
affected_packages6
assessed_packages222
unassessed_packages2
affected_by_severityhigh 3, moderate 3
direct_affected_packages0
Excluded from scoring (no data or not applicable): Indirect dependencies free of known advisories, No advisories left outstanding. Remaining weights renormalized. Matched 222 resolved dependencies against OSV. 2 could not be assessed — no resolved version, an unsupported ecosystem, or beyond the reported package list. This repository publishes no package the index resolves, so the repository dependency graph was assessed instead. That graph mixes development and test pins with shipped dependencies, so only the declared runtime dependencies are scored; transitive findings are reported as context and excluded from the score. 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.

76Good · 4% of overall
How it's scored
45/45Agent instructions — AGENTS.md, CLAUDE.md
0/15Machine-readable docs (llms.txt)
40/40Legible commit history — 81 of 99 human commits state their intent (structured subject or explanatory body)
Inputs used
has_llms_txtno
llms_txt_url—
legible_history_share0.818
agent_instruction_filesAGENTS.md, CLAUDE.md
agent_instruction_max_bytes38,560
How it's scored
0/18One-command bootstrap
22/22Automated tests
0/11Lint / format config
11/11Static type checking — vscode-extension/client/tsconfig.json, vscode-extension/tsconfig.json
10/10Reproducible environment — devcontainer, Dockerfile, lockfile
0/10Demonstrated agent practice — no agent-authored commits among the last 100
8/8Automated maintenance — 1 of the last 100 commits are automated dependency updates
0/10OpenSSF Scorecard: Pinned-Dependencies — dependency not pinned by hash detected -- score normalized to 0
Inputs used
has_nixno
has_testsyes
lockfilespackage-lock.json
has_dockerfileyes
typed_languageyes
bootstrap_files—
has_devcontaineryes
has_linter_configno
typecheck_configsvscode-extension/client/tsconfig.json, vscode-extension/tsconfig.json
agent_commit_share0
toolchain_manifests—
dependency_bot_commit_share0.01
How it's scored
45/45Type-checkable code — F# (statically typed)
55/55Manageable file sizes — 0/38 source files over 60KB
Inputs used
primary_languageF#
largest_source_bytes27,792
source_files_sampled38
oversized_source_files0
How it's scored
0/40API schema (OpenAPI/GraphQL/proto) — not applicable to this kind of software
20/20MCP server
40/40Runnable examples — examples
Inputs used
example_dirsexamples
has_mcp_signalyes
api_schema_files—
interfaces_expected_of—
Excluded from scoring (no data or not applicable): API schema (OpenAPI/GraphQL/proto). Remaining weights renormalized.

Key facts

2,168GitHub stars
58contributors
2,033commits, last 12 months
1days since last push
33releases
1bus factor
45open issues
npmpackage ecosystems

Data collection warnings

  • Star history unavailable: GitHub GraphQL error: Resource not accessible by personal access token
  • Could not fetch npm package 'darklang-vs-code-extension' from its registry
  • Could not fetch npm package 'darklang-lsp-client' from its registry

More detail

Star and fork history 0 ★ / 115 ⇿
0Stars
115Forks
24Releases

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.

020406080100120115152020-062023-062026-06
Major 0Minor 0Patch 24

Each point covers 6 days.

OpenSSF Scorecard 4.7 / 10
4.7aggregate

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 · 2026-09-19 13:40 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
10CI-Tests5 out of 5 merged PRs checked by a CI test -- score normalized to 10
0CII-Best-Practicesno effort to earn an OpenSSF best practices badge detected
4Code-ReviewFound 2/5 approved changesets -- score normalized to 4
10Contributorsproject has 21 contributing companies or organizations
n/aDangerous-Workflowno workflows found
10Dependency-Update-Toolupdate tool detected
0Fuzzingproject is not fuzzed
10Licenselicense file detected
10Maintained30 commit(s) and 0 issue activity found in the last 90 days -- score normalized to 10
n/aPackagingpackaging workflow not detected
0Pinned-Dependenciesdependency not pinned by hash detected -- score normalized to 0
0SASTSAST tool is not run on all commits -- score normalized to 0
0Security-Policysecurity policy file not detected
0Signed-ReleasesProject has not signed or included provenance with any releases.
n/aToken-PermissionsNo tokens found
3Vulnerabilities7 existing vulnerabilities detected
Direct dependencies 1
RegistryPackageVersion constraintManifest
npmvscode-languageclient^7.0.0vscode-extension/client/package.json
All dependencies 224

Full resolved dependency set from the GitHub dependency graph: 1 direct and 223 indirect (transitive) packages. The transitive closure is complete when the repository commits a lockfile.

RegistryPackageVersionRelation
npmvscode-languageclient7.0.0direct
Gocloud.google.com/go/pubsub1.0.1indirect
npm@aashutoshrathi/word-wrap1.2.6indirect
npm@esbuild/aix-ppc640.28.1indirect
npm@esbuild/android-arm0.28.1indirect
npm@esbuild/android-arm640.28.1indirect
npm@esbuild/android-x640.28.1indirect
npm@esbuild/darwin-arm640.28.1indirect
npm@esbuild/darwin-x640.28.1indirect
npm@esbuild/freebsd-arm640.28.1indirect
npm@esbuild/freebsd-x640.28.1indirect
npm@esbuild/linux-arm0.28.1indirect
npm@esbuild/linux-arm640.28.1indirect
npm@esbuild/linux-ia320.28.1indirect
npm@esbuild/linux-loong640.28.1indirect
npm@esbuild/linux-mips64el0.28.1indirect
npm@esbuild/linux-ppc640.28.1indirect
npm@esbuild/linux-riscv640.28.1indirect
npm@esbuild/linux-s390x0.28.1indirect
npm@esbuild/linux-x640.28.1indirect
npm@esbuild/netbsd-arm640.28.1indirect
npm@esbuild/netbsd-x640.28.1indirect
npm@esbuild/openbsd-arm640.28.1indirect
npm@esbuild/openbsd-x640.28.1indirect
npm@esbuild/openharmony-arm640.28.1indirect
npm@esbuild/sunos-x640.28.1indirect
npm@esbuild/win32-arm640.28.1indirect
npm@esbuild/win32-ia320.28.1indirect
npm@esbuild/win32-x640.28.1indirect
npm@eslint-community/eslint-utils4.4.0indirect
npm@eslint-community/regexpp4.9.1indirect
npm@eslint/eslintrc2.1.2indirect
npm@eslint/js8.51.0indirect
npm@humanwhocodes/config-array0.11.11indirect
npm@humanwhocodes/module-importer1.0.1indirect
npm@humanwhocodes/object-schema1.2.1indirect
npm@isaacs/cliui8.0.2indirect
npm@nodelib/fs.scandir2.1.5indirect
npm@nodelib/fs.stat2.0.5indirect
npm@nodelib/fs.walk1.2.8indirect
npm@pkgjs/parseargs0.11.0indirect
npm@types/json-schema7.0.13indirect
npm@types/mocha9.1.1indirect
npm@types/node16.18.58indirect
npm@types/semver7.5.3indirect
npm@types/vscode1.83.0indirect
npm@typescript-eslint/eslint-plugin5.62.0indirect
npm@typescript-eslint/parser5.62.0indirect
npm@typescript-eslint/scope-manager5.62.0indirect
npm@typescript-eslint/type-utils5.62.0indirect
npm@typescript-eslint/types5.62.0indirect
npm@typescript-eslint/typescript-estree5.62.0indirect
npm@typescript-eslint/utils5.62.0indirect
npm@typescript-eslint/visitor-keys5.62.0indirect
npmacorn8.10.0indirect
npmacorn-jsx5.3.2indirect
npmajv6.12.6indirect
npmansi-colors4.1.3indirect
npmansi-regex5.0.1indirect
npmansi-regex6.1.0indirect
npmansi-styles4.3.0indirect
npmansi-styles6.2.1indirect
npmanymatch3.1.3indirect
npmargparse2.0.1indirect
npmarray-union2.1.0indirect
npmbalanced-match1.0.2indirect
npmbinary-extensions2.2.0indirect
npmbrace-expansion1.1.18indirect
npmbrace-expansion2.1.4indirect
npmbraces3.0.3indirect
npmbrowser-stdout1.3.1indirect
npmcallsites3.1.0indirect
npmcamelcase6.3.0indirect
npmchalk4.1.2indirect
npmchokidar3.5.3indirect
npmcliui8.0.1indirect
npmcolor-convert2.0.1indirect
npmcolor-name1.1.4indirect
npmconcat-map0.0.1indirect
npmcross-spawn7.0.3indirect
npmdebug4.4.0indirect
npmdecamelize4.0.0indirect
npmdeep-is0.1.4indirect
npmdiff5.2.0indirect
npmdir-glob3.0.1indirect
npmdoctrine3.0.0indirect
npmeastasianwidth0.2.0indirect
npmemoji-regex8.0.0indirect
npmemoji-regex9.2.2indirect
npmesbuild0.28.1indirect
npmescalade3.2.0indirect
npmescape-string-regexp4.0.0indirect
npmeslint8.51.0indirect
npmeslint-scope5.1.1indirect
npmeslint-scope7.2.2indirect
npmeslint-visitor-keys3.4.3indirect
npmespree9.6.1indirect
npmesquery1.5.0indirect
npmesrecurse4.3.0indirect
npmestraverse4.3.0indirect
npmestraverse5.3.0indirect
npmesutils2.0.3indirect
npmfast-deep-equal3.1.3indirect
npmfast-glob3.3.1indirect
npmfast-json-stable-stringify2.1.0indirect
npmfast-levenshtein2.0.6indirect
npmfastq1.15.0indirect
npmfile-entry-cache6.0.1indirect
npmfill-range7.1.1indirect
npmfind-up5.0.0indirect
npmflat5.0.2indirect
npmflat-cache3.1.1indirect
npmflatted3.4.2indirect
npmforeground-child3.3.0indirect
npmfs.realpath1.0.0indirect
npmfsevents2.3.3indirect
npmget-caller-file2.0.5indirect
npmglob10.4.5indirect
npmglob7.2.0indirect
npmglob-parent5.1.2indirect
npmglob-parent6.0.2indirect
npmglobals13.23.0indirect
npmglobby11.1.0indirect
npmgraphemer1.4.0indirect
npmhas-flag4.0.0indirect
npmhe1.2.0indirect
npmignore5.2.4indirect
npmimport-fresh3.3.0indirect
npmimurmurhash0.1.4indirect
npminflight1.0.6indirect
npminherits2.0.4indirect
npmis-binary-path2.1.0indirect
npmis-extglob2.1.1indirect
npmis-fullwidth-code-point3.0.0indirect
npmis-glob4.0.3indirect
npmis-number7.0.0indirect
npmis-path-inside3.0.3indirect
npmis-plain-obj2.1.0indirect
npmis-unicode-supported0.1.0indirect
npmisexe2.0.0indirect
npmjackspeak3.4.3indirect
npmjs-yaml4.3.2indirect
npmjson-buffer3.0.1indirect
npmjson-schema-traverse0.4.1indirect
npmjson-stable-stringify-without-jsonify1.0.1indirect
npmkeyv4.5.4indirect
npmlevn0.4.1indirect
npmlocate-path6.0.0indirect
npmlodash.merge4.6.2indirect
npmlog-symbols4.1.0indirect
npmlru-cache10.4.3indirect
npmlru-cache6.0.0indirect
npmmerge21.4.1indirect
npmmicromatch4.0.5indirect
npmminimatch3.1.5indirect
npmminimatch5.1.9indirect
npmminimatch9.0.9indirect
npmminipass7.1.2indirect
npmmocha11.1.0indirect
npmms2.1.3indirect
npmnatural-compare1.4.0indirect
npmnatural-compare-lite1.4.0indirect
npmnormalize-path3.0.0indirect
npmonce1.4.0indirect
npmoptionator0.9.3indirect
npmp-limit3.1.0indirect
npmp-locate5.0.0indirect
npmpackage-json-from-dist1.0.1indirect
npmparent-module1.0.1indirect
npmpath-exists4.0.0indirect
npmpath-is-absolute1.0.1indirect
npmpath-key3.1.1indirect
npmpath-scurry1.11.1indirect
npmpath-type4.0.0indirect
npmpicomatch2.3.2indirect
npmprelude-ls1.2.1indirect
npmpunycode2.3.0indirect
npmqueue-microtask1.2.3indirect
npmrandombytes2.1.0indirect
npmreaddirp3.6.0indirect
npmrequire-directory2.1.1indirect
npmresolve-from4.0.0indirect
npmreusify1.0.4indirect
npmrimraf3.0.2indirect
npmrun-parallel1.2.0indirect
npmsafe-buffer5.2.1indirect
npmsemver7.5.4indirect
npmserialize-javascript6.0.2indirect
npmshebang-command2.0.0indirect
npmshebang-regex3.0.0indirect
npmsignal-exit4.1.0indirect
npmslash3.0.0indirect
npmstring-width4.2.3indirect
npmstring-width5.1.2indirect
npmstrip-ansi6.0.1indirect
npmstrip-ansi7.1.0indirect
npmstrip-json-comments3.1.1indirect
npmsupports-color7.2.0indirect
npmsupports-color8.1.1indirect
npmtext-table0.2.0indirect
npmto-regex-range5.0.1indirect
npmtslib1.14.1indirect
npmtsutils3.21.0indirect
npmtype-check0.4.0indirect
npmtype-fest0.20.2indirect
npmtypescript4.9.5indirect
npmuri-js4.4.1indirect
npmvscode-jsonrpc6.0.0indirect
npmvscode-languageserver-protocol3.16.0indirect
npmvscode-languageserver-types3.16.0indirect
npmwhich2.0.2indirect
npmworkerpool6.5.1indirect
npmwrap-ansi7.0.0indirect
npmwrap-ansi8.1.0indirect
npmwrappy1.0.2indirect
npmy18n5.0.8indirect
npmyallist4.0.0indirect
npmyargs17.7.2indirect
npmyargs-parser21.1.1indirect
npmyargs-unparser2.0.0indirect
npmyocto-queue0.1.0indirect
NuGetMicrosoft.AspNetCore.Components.WebAssembly—indirect
NuGetMicrosoft.AspNetCore.Components.WebAssembly.DevServer—indirect
NuGetSQLitePCLRaw.bundle_e_sqlite33.0.2indirect
Dependency advisories 6

This repository publishes no package the index resolves, so its own dependency graph was assessed — 222 packages, which also include development and test pins that never ship: 6 carry known advisories, of which 0 are direct. 2 could not be assessed — no resolved version, an unsupported ecosystem, or beyond the reported package list.

PackageVersionRelationSeverityAdvisoriesFixed in
cross-spawn7.0.3indirecthigh17.0.5
glob10.4.5indirecthigh111.1.0
serialize-javascript6.0.2indirecthigh27.0.5
ajv6.12.6indirectmoderate18.18.0
diff5.2.0indirectmoderate18.0.3
micromatch4.0.5indirectmoderate14.0.8

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

Feedback

Spotted something off in this report, or have thoughts to share? Wrong measurements, missed tooling, ideas, questions — anything is welcome. Every message is read and gets a response.

The message is kept through sign-in.

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.