Public record
Software health reportschema 0.31.0 · metrics 2.10.0 · 2026-08-04 20:32 UTC

ampproject / remapping

Remap sequential sourcemaps through transformations to point at the original source code

TypeScript · JavaScriptApache-2.0★ 137 stars⑂ 32 forkssince Aug 2019archivedView on GitHub ↗
KindLibraryhow this is determined

ampproject/remapping holds a health index of 19 out of 100, placing it in the Critical band. It scores highest on Community & Adoption (74/100) and lowest on Vitality (18/100). The repository is archived, so no further maintenance is expected.

19
overall / 100
Critical

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.

19
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 53 is calibrated to 54 on the published index scale (record calibration 2026-08-02).

Ownership

AMPOrganization
520 followers60 public repossince Sep 2015

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

Package ecosystems

RegistryPackageVersionDownloads / moVersionsLast publishTags
npm@ampproject/remapping2.3.0145,967,14919886 days agosourcemapremap

Metrics by category

Vitality

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

18Critical · 21% of overall

Development activity

1Critical
How it's scored
0/36Push recency — last push 401 days ago
0/36Commit cadence — 0/52 weeks with commits
0/18Commit volume — 0 commits in the last year
0/10OpenSSF Scorecard: Maintained — project is archived
Inputs used
commits_last_year0
human_commit_share0.98
days_since_last_push401
active_weeks_last_year0

Release discipline

44Weak
How it's scored
27/27Ships releases — 5 releases published
0/36Release recency — latest release 886 days ago
12.6/27Release cadence — a release every ~188.3 days
0/10OpenSSF Scorecard: Signed-Releases — no data
Inputs used
releases_count5
latest_release_tagv2.3.0
releases_from_tagsno
days_since_latest_release886
mean_days_between_releases188.3
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?

74Good · 17% of overall

Popularity & adoption

49Weak
How it's scored
34.6/60Stars — 137 stars
12.4/25Forks — 32 forks
1.7/15Watchers — 3 watchers
Inputs used
forks32
stars137
watchers3
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

Ecosystem adoption (downloads)

100Exceptional
How it's scored
80/80Monthly downloads — 145,967,149 downloads/month across npm
0/20Registry dependents — not reported by this ecosystem
Inputs used
packages@ampproject/remapping
dependents—
ecosystemsnpm
total_downloads—
monthly_downloads145,967,149
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?

62Moderate · 23% of overall

Maintainer resilience (bus factor)

32At Risk
How it's scored
9/54Bus factor — 1 contributor(s) cover half of all commits
5.9/22.5Commit distribution — top contributor authored 74% of commits
6.8/13.5Contributor breadth — 5 contributors
10/10OpenSSF Scorecard: Contributors — project has 5 contributing companies or organizations
Inputs used
bus_factor1
contributors_sampled5
top_contributor_share0.739

Issue & PR responsiveness

61Moderate
How it's scored
40.2/42Issue resolution — 96% of issues closed
13.1/30PR acceptance — 78/179 decided PRs merged
0/13Newcomer PR acceptance — no first-time contributor's PR decided in 30d
0/15OpenSSF Scorecard: Code-Review — Found 1/25 approved changesets -- score normalized to 0
Inputs used
merged_prs78
open_issues1
closed_issues23
prs_merged_7d0
prs_decided_7d0
prs_merged_30d0
prs_decided_30d0
issue_closed_ratio0.958
closed_unmerged_prs101
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

93Exceptional
How it's scored
30/30Ownership backing — organization-owned
0/20Verified domain — verified-domain status not read for this organization
19.5/25Owner reach — 520 followers of ampproject
25/25Track record — 60 public repos, account ~10 yr old
Inputs used
followers520
owner_typeOrganization
is_verified—
owner_loginampproject
public_repos60
account_age_days3,988
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 886 days ago
20/20Version history — 19 published versions
20/20Not deprecated — active, not deprecated or yanked
Inputs used
packages@ampproject/remapping
ecosystemsnpm
any_deprecatedno
min_days_since_publish886

Engineering Quality

Are baseline engineering and documentation practices in place?

62Moderate · 19% of overall

Engineering practices

76Good
How it's scored
24/24CI workflows — 1 workflow(s)
24/24Tests present
16/16Linter config — .eslintrc.js
0/9.6Pre-commit hooks
6.4/6.4.editorconfig
6/20OpenSSF Scorecard: CI-Tests — 1 out of 3 merged PRs checked by a CI test -- score normalized to 3
Inputs used
has_ciyes
has_testsyes
has_editorconfigyes
has_linter_configyes
has_precommit_configno

Documentation

40Weak
How it's scored
30/30README
0/25Documentation directory
0/15Documentation / homepage site
10/10Repository description
0/10Topics
0/10Wiki
Inputs used
topics—
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?

49Weak · 16% of overall

Security posture

36Weak
How it's scored
7.5/7.5Binary-Artifacts — no binaries found in the repo
0/7.5Branch-Protection — no data
0.8/2.5CI-Tests — 1 out of 3 merged PRs checked by a CI test -- score normalized to 3
0/2.5CII-Best-Practices — no effort to earn an OpenSSF best practices badge detected
0/7.5Code-Review — Found 1/25 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 — project is archived
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
0/7.5Vulnerabilities — 39 existing vulnerabilities detected
Inputs used
sourceopenssf_scorecard
checks_evaluated15
scorecard_versionv5.5.0
checks_inconclusive3
scorecard_aggregate3.6
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_packages4
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:@ampproject/remapping@2.3.0 runtime dependency closure — what installing the published package pulls in — 4 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.

59Moderate · 4% of overall

Agent context & guidance

15Critical
How it's scored
0/45Agent instructions — no CLAUDE.md / AGENTS.md / editor rules
0/15Machine-readable docs (llms.txt)
15.2/40Legible commit history — 28 of 98 human commits state their intent (structured subject or explanatory body)
Inputs used
has_llms_txtno
llms_txt_url—
legible_history_share0.286
agent_instruction_files—
agent_instruction_max_bytes—

Verify loop (build / test / typecheck)

62Moderate
How it's scored
0/18One-command bootstrap
22/22Automated tests
11/11Lint / format config — .eslintrc.js
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 — 2 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_dockerfileno
typed_languageyes
bootstrap_files—
has_devcontainerno
has_linter_configyes
typecheck_configstsconfig.json
agent_commit_share0
toolchain_manifests—
dependency_bot_commit_share0.02

Code legibility for models

100Exceptional
How it's scored
45/45Type-checkable code — TypeScript (statically typed)
55/55Manageable file sizes — 0/45 source files over 60KB
Inputs used
primary_languageTypeScript
largest_source_bytes16,204
source_files_sampled45
oversized_source_files0

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 — samples
Inputs used
example_dirssamples
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

137GitHub stars
5contributors
0commits, last 12 months
401days since last push
5releases
1bus factor
1open 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 ★ / 32 ⇿
0Stars
32Forks
5Releases

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.

01325383232019-082023-012026-07
Major 0Minor 3Patch 2

Each point covers 7 days.

OpenSSF Scorecard 3.6 / 10
3.6aggregate

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 · 2026-08-04 20:32 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
3CI-Tests1 out of 3 merged PRs checked by a CI test -- score normalized to 3
0CII-Best-Practicesno effort to earn an OpenSSF best practices badge detected
0Code-ReviewFound 1/25 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
0Maintainedproject is archived
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
0Vulnerabilities39 existing vulnerabilities detected
Direct dependencies 2
RegistryPackageVersion constraintManifest
npm@jridgewell/gen-mapping^0.3.5package.json
npm@jridgewell/trace-mapping^0.3.24package.json
All dependencies 474

Full resolved dependency set from the GitHub dependency graph: 3 direct and 471 indirect (transitive) packages. The transitive closure is complete when the repository commits a lockfile.

RegistryPackageVersionRelation
npm@jridgewell/gen-mapping0.3.5direct
npm@jridgewell/trace-mapping0.2.7direct
npm@jridgewell/trace-mapping0.3.24direct
npm@ampproject/remapping2.0.3indirect
npm@babel/code-frame7.16.7indirect
npm@babel/compat-data7.17.0indirect
npm@babel/core7.17.0indirect
npm@babel/generator7.17.0indirect
npm@babel/helper-compilation-targets7.16.7indirect
npm@babel/helper-environment-visitor7.16.7indirect
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npm@babel/helper-plugin-utils7.16.7indirect
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npm@babel/helper-validator-option7.16.7indirect
npm@babel/helpers7.17.0indirect
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npm@babel/parser7.17.0indirect
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npm@jest/environment27.5.1indirect
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npm@jest/test-sequencer27.5.1indirect
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npm@jest/types27.5.1indirect
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Dependency advisories 0

Installing npm:@ampproject/remapping@2.3.0 pulls in 4 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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Related records

Inspected repositories sharing catalogue tags or ecosystems with ampproject/remapping. Read them side by side →

53jridgewell/sourcemapsMonorepo for various sourcemap librariesModerate36thlorenz/convert-source-mapConverts a source-map from/to different formats.Weak77soenneker/soenneker.gen.adaptFrictionless object mappingGood45timothee-haudebourg/locspanCode mapping utility types and traits for Rust.Weak98CesiumGS/cesiumAn open-source JavaScript library for world-class 3D globes and maps :earth_americas:Exceptional98electricitymaps/electricitymaps-contribThe open source repository for Electricity Maps data parsers that powers the world's most comprehensive electricity data platformExceptional

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 v0.31.0 — full methodology · metrics wiki.

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