Public record
Software health reportschema 0.34.0 · metrics 2.10.0 · 2026-09-16 10:21 UTC

shikijs / shiki

A beautiful yet powerful syntax highlighter

TypeScriptMIT★ 13,809 stars⑂ 602 forkssince Oct 2018View on GitHub ↗
KindCommand-line toolLibraryNetwork servicehow this is determined

shikijs/shiki holds a health index of 94 out of 100, placing it in the Exceptional band. It scores highest on Community & Adoption (94/100) and lowest on AI Readiness (58/100). It was last updated 5 days ago. 2 contributors account for most of its recent work.

94
overall / 100
Exceptional

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.

94
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 81 is calibrated to 94 on the published index scale (record calibration 2026-08-02).

Ownership

ShikiOrganization
198 followers9 public repossince Aug 2020

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

Package ecosystems

RegistryPackageVersionDownloads / moVersionsLast publishTags
npm@shikijs/cli4.4.3304,67414737 days agoshikicli
npm@shikijs/core4.4.386,029,57714737 days agoshiki
npm@shikijs/langs4.4.390,490,1037137 days agoshikitextmate-grammars
npmshiki4.4.386,007,37120237 days agoshiki
npm@shikijs/monaco4.4.3839,17014737 days agoshikimonaco-editor
npm@shikijs/rehype4.4.32,846,80614437 days agoshikirehype
npm@shikijs/stream4.4.31,307,222837 days agoshikistreamingllm
npm@shikijs/themes4.4.395,519,5507137 days agoshikitextmate-themes

Metrics by category

Vitality

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

89Excellent · 21% of overall
How it's scored
36/36Push recency — last push 5 days ago
18/36Commit cadence — 26/52 weeks with commits
18/18Commit volume — 151 commits in the last year
10/10OpenSSF Scorecard: Maintained — 29 commit(s) and 2 issue activity found in the last 90 days -- score normalized to 10
Inputs used
commits_last_year151
human_commit_share1
days_since_last_push5
active_weeks_last_year26

Release discipline

100Exceptional
How it's scored
27/27Ships releases — 100 releases published
36/36Release recency — latest release 37 days ago
27/27Release cadence — a release every ~17.9 days
0/10OpenSSF Scorecard: Signed-Releases — no data
Inputs used
releases_count100
latest_release_tagv4.4.3
releases_from_tagsno
days_since_latest_release37
mean_days_between_releases17.9
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?

94Exceptional · 17% of overall
How it's scored
60/60Stars — 13,809 stars
23.2/25Forks — 602 forks
7.7/15Watchers — 25 watchers
Inputs used
forks602
stars13,809
watchers25
growth_stateunverified
growth_factor_pct100
growth_unverified_reasonno_history

Community health

92Excellent
How it's scored
22.5/22.5README
22.5/22.5License — recognized license (MIT)
18/18CONTRIBUTING guide
13.5/13.5Code 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_conductyes
readme_badge_servicesshields.io
has_pull_request_templateyes
How it's scored
80/80Monthly downloads — 363,344,473 downloads/month across npm
0/20Registry dependents — not reported by this ecosystem
Inputs used
packages@shikijs/cli, @shikijs/core, @shikijs/langs, shiki, @shikijs/monaco, @shikijs/rehype, @shikijs/stream, @shikijs/themes
dependents—
ecosystemsnpm
total_downloads—
monthly_downloads363,344,473
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?

75Good · 23% of overall
How it's scored
25.2/54Bus factor — 2 contributor(s) cover half of all commits
13.2/22.5Commit distribution — top contributor authored 41% of commits
13.5/13.5Contributor breadth — 99 contributors
10/10OpenSSF Scorecard: Contributors — project has 91 contributing companies or organizations
Inputs used
bus_factor2
contributors_sampled99
top_contributor_share0.413
How it's scored
36.5/42Issue resolution — 87% of issues closed
21.8/30PR acceptance — 474/651 decided PRs merged
13/13Newcomer PR acceptance — 5/5 first-time contributors' PRs merged in 30d
7.5/15OpenSSF Scorecard: Code-Review — Found 16/30 approved changesets -- score normalized to 5
Inputs used
merged_prs474
open_issues77
closed_issues517
prs_merged_7d7
prs_decided_7d8
prs_merged_30d7
prs_decided_30d8
issue_closed_ratio0.87
closed_unmerged_prs177
first_time_authors_30d5
first_time_prs_merged_30d5
first_time_prs_decided_30d5
How it's scored
30/30Ownership backing — organization-owned
0/20Verified domain
16.5/25Owner reach — 198 followers of shikijs
19.3/25Track record — 9 public repos, account ~6 yr old
Inputs used
followers198
owner_typeOrganization
is_verifiedno
owner_loginshikijs
public_repos9
account_age_days2,233

Package maintenance

100Exceptional
How it's scored
25/25Published & resolvable — 8 package(s) on npm
35/35Publish recency — latest publish 37 days ago
20/20Version history — 202 published versions
20/20Not deprecated — active, not deprecated or yanked
Inputs used
packages@shikijs/cli, @shikijs/core, @shikijs/langs, shiki, @shikijs/monaco, @shikijs/rehype, @shikijs/stream, @shikijs/themes
ecosystemsnpm
any_deprecatedno
min_days_since_publish37

Engineering Quality

Are baseline engineering and documentation practices in place?

86Excellent · 19% of overall
How it's scored
24/24CI workflows — 2 workflow(s)
24/24Tests present
16/16Linter config — eslint.config.js
0/9.6Pre-commit hooks
0/6.4.editorconfig
20/20OpenSSF Scorecard: CI-Tests — 16 out of 16 merged PRs checked by a CI test -- score normalized to 10
Inputs used
has_ciyes
has_testsyes
has_editorconfigno
has_linter_configyes
has_precommit_configno

Documentation

90Excellent
How it's scored
30/30README
25/25Documentation directory
15/15Documentation / homepage site — http://shiki.style/
10/10Repository description
10/10Topics — 4 topics
0/10Wiki
Inputs used
topicsmarkdown, shiki, syntax-highlighting, textmate-grammar
has_wikino
homepagehttp://shiki.style/
docs_sitehttp://shiki.style/
has_readmeyes
has_docs_diryes
has_descriptionyes

Security

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

68Good · 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 — 16 out of 16 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
3.8/7.5Code-Review — Found 16/30 approved changesets -- score normalized to 5
2.5/2.5Contributors — project has 91 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
7.5/7.5Maintained — 29 commit(s) and 2 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 — no data
0/7.5Token-Permissions — detected GitHub workflow tokens with excessive permissions
7.5/7.5Vulnerabilities — 0 existing vulnerabilities detected
Inputs used
sourceopenssf_scorecard
checks_evaluated15
scorecard_versionv5.5.0
checks_inconclusive3
scorecard_aggregate6
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_packages44
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:shiki@4.4.3 runtime dependency closure — what installing the published package pulls in — 44 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.

58Moderate · 4% of overall
How it's scored
0/45Agent instructions — no CLAUDE.md / AGENTS.md / editor rules
0/15Machine-readable docs (llms.txt)
40/40Legible commit history — 100 of 100 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—
How it's scored
0/18One-command bootstrap
22/22Automated tests
11/11Lint / format config — eslint.config.js
11/11Static type checking — docs/tsconfig.json, packages/magic-move/playground/tsconfig.json, packages/stream/playground/tsconfig.json, tsconfig.json
10/10Reproducible environment — lockfile
2/10Demonstrated agent practice — 1 of the last 100 commits agent-authored or agent-credited
0/8Automated maintenance — no automated dependency updates observed
0/10OpenSSF Scorecard: Pinned-Dependencies — dependency not pinned by hash detected -- score normalized to 0
Inputs used
has_nixno
has_testsyes
lockfilespnpm-lock.yaml
has_dockerfileno
typed_languageyes
bootstrap_files—
has_devcontainerno
has_linter_configyes
typecheck_configsdocs/tsconfig.json, packages/magic-move/playground/tsconfig.json, packages/stream/playground/tsconfig.json, tsconfig.json
agent_commit_share0.01
toolchain_manifests—
dependency_bot_commit_share0
How it's scored
45/45Type-checkable code — TypeScript (statically typed)
55/55Manageable file sizes — 0/380 source files over 60KB
Inputs used
primary_languageTypeScript
largest_source_bytes42,529
source_files_sampled380
oversized_source_files0

Key facts

13,809GitHub stars
99contributors
151commits, last 12 months
5days since last push
100releases
2bus factor
77open 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 ★ / 602 ⇿
0Stars
602Forks
100Releases

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.

0100200300400500600595462019-012022-112026-09
Major 3Minor 46Patch 51

Each point covers 8 days.

OpenSSF Scorecard 6.0 / 10
6.0aggregate

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 · 2026-09-16 10:20 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-Tests16 out of 16 merged PRs checked by a CI test -- score normalized to 10
0CII-Best-Practicesno effort to earn an OpenSSF best practices badge detected
5Code-ReviewFound 16/30 approved changesets -- score normalized to 5
10Contributorsproject has 91 contributing companies or organizations
10Dangerous-Workflowno dangerous workflow patterns detected
10Dependency-Update-Toolupdate tool detected
0Fuzzingproject is not fuzzed
10Licenselicense file detected
10Maintained29 commit(s) and 2 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
n/aSigned-Releasesno releases found
0Token-Permissionsdetected GitHub workflow tokens with excessive permissions
10Vulnerabilities0 existing vulnerabilities detected
Direct dependencies 54
RegistryPackageVersion constraintManifest
npm@shikijs/vscode-textmatecatalog:prodpackages/cli/package.json
npmansiscatalog:prodpackages/cli/package.json
npmcaccatalog:prodpackages/cli/package.json
npmshikiworkspace:*packages/cli/package.json
npmcaccatalog:prodpackages/codegen/package.json
npmprettiercatalog:clipackages/codegen/package.json
npmshikiworkspace:*packages/codegen/package.json
npmshikiworkspace:*packages/colorized-brackets/package.json
npm@shikijs/primitiveworkspace:*packages/core/package.json
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npmohashcatalog:integrationspackages/magic-move/package.json
npmmarkdown-exitcatalog:integrationspackages/markdown-exit/package.json
npmshikiworkspace:*packages/markdown-exit/package.json
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npm@types/hastcatalog:typespackages/shiki/package.json
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npmtwoslashcatalog:integrationspackages/twoslash/package.json
All dependencies 79

Full resolved dependency set from the GitHub dependency graph: 15 direct and 64 indirect (transitive) packages. The transitive closure is complete when the repository commits a lockfile.

RegistryPackageVersionRelation
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Dependency advisories 0

Installing npm:shiki@4.4.3 pulls in 44 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

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 — npm.