{"adoption": {"forks": 363, "observed_at": "2026-08-28T04:09:29.403956+00:00", "stars": 5766}, "canonical_url": "https://ross.abutalabs.com/products/istanbul-nyc", "card": {"archived": false, "artifact_type": "cli-tool", "description": "the Istanbul command line interface", "domain": ["testing", "developer-tools"], "enriched": true, "function": ["testing", "cli", "developer-tools"], "health_score": 87, "homepage": "https://istanbul.js.org/", "language": "JavaScript", "license": "ISC", "license_family": "permissive", "maturity": "stable", "member_repos": ["istanbuljs/nyc", "istanbuljs/istanbuljs"], "name": "Istanbul (nyc)", "platform": ["cli", "cross-platform"], "pushed_at": "2026-05-17T16:05:31+00:00", "repo": "istanbuljs/nyc", "stars": 5766, "tags": ["code-coverage", "istanbul", "javascript", "instrumentation", "test-coverage", "mocha", "source-maps", "nodejs"], "topics": ["code-coverage", "javascript", "istanbul"], "urls": [{"kind": "homepage", "url": "https://istanbul.js.org/"}, {"kind": "site_page", "url": "https://istanbul.js.org/docs/tutorials"}, {"kind": "site_page", "url": "https://istanbul.js.org/docs/advanced"}, {"kind": "site_page", "url": "https://istanbul.js.org/integrations"}], "use_cases": ["measure code coverage of my mocha tests", "generate lcov and html coverage reports for a JavaScript project", "get coverage for TypeScript or Babel code", "instrument subprocesses spawned during tests", "track how well unit tests exercise the codebase"], "what_it_is": "nyc is the official command-line interface for Istanbul, a JavaScript code coverage tool that instruments ES5 and ES2015+ code with line counters. It wraps test runners like mocha, AVA, and tap to collect and report coverage, including source-mapped coverage for Babel and TypeScript projects.", "when_to_avoid": ["you use Jest or node-tap, which already bundle Istanbul coverage", "you prefer V8-native coverage via c8 without instrumentation"], "when_to_choose": ["you need coverage for a Node.js project using mocha, AVA, or a runner without built-in coverage", "you need source-mapped coverage for Babel or TypeScript", "you need to instrument subprocesses spawned by your tests"]}, "data_as_of": "2026-08-30T08:39:29.467469+00:00", "members": [{"path": "/repos/istanbuljs/nyc", "repo": "istanbuljs/nyc", "role": "main", "score": 71}, {"path": "/repos/istanbuljs/istanbuljs", "repo": "istanbuljs/istanbuljs", "role": "sdk", "score": 58}], "provenance": {"archived": {"kind": "observed", "observed_at": "2026-08-28T04:09:29.403956+00:00", "source": "github"}, "artifact_type": {"confidence": null, "enriched_at": "2026-08-29T17:52:55.463414+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "2d7e255ac0bc97fd199b9836331c6f6f85fff32f31e22b1fe57085c4b2aa6ea5", "fetched_at": "2026-08-28T04:09:29.403956+00:00", "kind": "readme", "missing": false, "url": "https://github.com/istanbuljs/nyc"}, {"content_hash": "fd7d4665a9562b20a9f5aa9a3bb16899cea6859f819b55dfef214e4b6e47c5e9", "fetched_at": "2026-08-29T08:48:55.424420+00:00", "kind": "homepage", "missing": false, "url": "https://istanbul.js.org/"}, {"content_hash": "e230905c262ad20d14bfb9b5c63e13ecf6eea6515466d01c7bd3a95f3098af1d", "fetched_at": "2026-08-29T08:48:55.426912+00:00", "kind": "site_page", "missing": false, "url": "https://istanbul.js.org/docs/tutorials"}, {"content_hash": "95604956c652381afcad7c60a4b0a22adbd628aee3ea19675f365a52dbfb1e0b", "fetched_at": "2026-08-29T08:48:55.428561+00:00", "kind": "site_page", "missing": false, "url": "https://istanbul.js.org/docs/advanced"}, {"content_hash": "8141228828654594621f4167f7aaef60941a31f014074718c7ac3258989d831a", "fetched_at": "2026-08-29T08:48:55.430044+00:00", "kind": "site_page", "missing": false, "url": "https://istanbul.js.org/integrations"}], "taxonomy_version": 1}, "description": {"kind": "observed", "observed_at": "2026-08-28T04:09:29.403956+00:00", "source": "github"}, "domain": {"confidence": null, "enriched_at": "2026-08-29T17:52:55.463414+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "2d7e255ac0bc97fd199b9836331c6f6f85fff32f31e22b1fe57085c4b2aa6ea5", "fetched_at": "2026-08-28T04:09:29.403956+00:00", "kind": "readme", "missing": false, "url": "https://github.com/istanbuljs/nyc"}, {"content_hash": "fd7d4665a9562b20a9f5aa9a3bb16899cea6859f819b55dfef214e4b6e47c5e9", "fetched_at": "2026-08-29T08:48:55.424420+00:00", "kind": "homepage", "missing": false, "url": "https://istanbul.js.org/"}, {"content_hash": "e230905c262ad20d14bfb9b5c63e13ecf6eea6515466d01c7bd3a95f3098af1d", "fetched_at": "2026-08-29T08:48:55.426912+00:00", "kind": "site_page", "missing": false, "url": "https://istanbul.js.org/docs/tutorials"}, {"content_hash": "95604956c652381afcad7c60a4b0a22adbd628aee3ea19675f365a52dbfb1e0b", "fetched_at": "2026-08-29T08:48:55.428561+00:00", "kind": "site_page", "missing": false, "url": "https://istanbul.js.org/docs/advanced"}, {"content_hash": "8141228828654594621f4167f7aaef60941a31f014074718c7ac3258989d831a", "fetched_at": "2026-08-29T08:48:55.430044+00:00", "kind": "site_page", "missing": false, "url": "https://istanbul.js.org/integrations"}], "taxonomy_version": 1}, "enriched": {"inputs": [], "kind": "computed", "method": "enrichment_status"}, "function": {"confidence": null, "enriched_at": "2026-08-29T17:52:55.463414+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "2d7e255ac0bc97fd199b9836331c6f6f85fff32f31e22b1fe57085c4b2aa6ea5", "fetched_at": "2026-08-28T04:09:29.403956+00:00", "kind": "readme", "missing": false, "url": "https://github.com/istanbuljs/nyc"}, {"content_hash": "fd7d4665a9562b20a9f5aa9a3bb16899cea6859f819b55dfef214e4b6e47c5e9", "fetched_at": "2026-08-29T08:48:55.424420+00:00", "kind": "homepage", "missing": false, "url": "https://istanbul.js.org/"}, {"content_hash": "e230905c262ad20d14bfb9b5c63e13ecf6eea6515466d01c7bd3a95f3098af1d", "fetched_at": "2026-08-29T08:48:55.426912+00:00", "kind": "site_page", "missing": false, "url": "https://istanbul.js.org/docs/tutorials"}, {"content_hash": "95604956c652381afcad7c60a4b0a22adbd628aee3ea19675f365a52dbfb1e0b", "fetched_at": "2026-08-29T08:48:55.428561+00:00", "kind": "site_page", "missing": false, "url": "https://istanbul.js.org/docs/advanced"}, {"content_hash": "8141228828654594621f4167f7aaef60941a31f014074718c7ac3258989d831a", "fetched_at": "2026-08-29T08:48:55.430044+00:00", "kind": "site_page", "missing": false, "url": "https://istanbul.js.org/integrations"}], "taxonomy_version": 1}, "health_score": {"inputs": ["days_since_push", "days_since_release", "archived"], "kind": "computed", "method": "health_v1"}, "homepage": {"kind": "observed", "observed_at": "2026-08-28T04:09:29.403956+00:00", "source": "github"}, "language": {"kind": "observed", "observed_at": "2026-08-28T04:09:29.403956+00:00", "source": "github"}, "license": {"kind": "observed", "observed_at": "2026-08-28T04:09:29.403956+00:00", "source": "github"}, "license_family": {"inputs": ["license"], "kind": "computed", "method": "license_family"}, "maturity": {"confidence": null, "enriched_at": "2026-08-29T17:52:55.463414+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "2d7e255ac0bc97fd199b9836331c6f6f85fff32f31e22b1fe57085c4b2aa6ea5", "fetched_at": "2026-08-28T04:09:29.403956+00:00", "kind": "readme", "missing": false, "url": "https://github.com/istanbuljs/nyc"}, {"content_hash": "fd7d4665a9562b20a9f5aa9a3bb16899cea6859f819b55dfef214e4b6e47c5e9", "fetched_at": "2026-08-29T08:48:55.424420+00:00", "kind": "homepage", "missing": false, "url": "https://istanbul.js.org/"}, {"content_hash": "e230905c262ad20d14bfb9b5c63e13ecf6eea6515466d01c7bd3a95f3098af1d", "fetched_at": "2026-08-29T08:48:55.426912+00:00", "kind": "site_page", "missing": false, "url": "https://istanbul.js.org/docs/tutorials"}, {"content_hash": "95604956c652381afcad7c60a4b0a22adbd628aee3ea19675f365a52dbfb1e0b", "fetched_at": "2026-08-29T08:48:55.428561+00:00", "kind": "site_page", "missing": false, "url": "https://istanbul.js.org/docs/advanced"}, {"content_hash": "8141228828654594621f4167f7aaef60941a31f014074718c7ac3258989d831a", "fetched_at": "2026-08-29T08:48:55.430044+00:00", "kind": "site_page", "missing": false, "url": "https://istanbul.js.org/integrations"}], "taxonomy_version": 1}, "member_repos": {"kind": "observed", "observed_at": "2026-08-28T04:09:29.403956+00:00", "source": "github"}, "name": {"kind": "observed", "observed_at": "2026-08-28T04:09:29.403956+00:00", "source": "github"}, "platform": {"confidence": null, "enriched_at": "2026-08-29T17:52:55.463414+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "2d7e255ac0bc97fd199b9836331c6f6f85fff32f31e22b1fe57085c4b2aa6ea5", "fetched_at": "2026-08-28T04:09:29.403956+00:00", "kind": "readme", "missing": false, "url": "https://github.com/istanbuljs/nyc"}, {"content_hash": "fd7d4665a9562b20a9f5aa9a3bb16899cea6859f819b55dfef214e4b6e47c5e9", "fetched_at": "2026-08-29T08:48:55.424420+00:00", "kind": "homepage", "missing": false, "url": "https://istanbul.js.org/"}, {"content_hash": "e230905c262ad20d14bfb9b5c63e13ecf6eea6515466d01c7bd3a95f3098af1d", "fetched_at": "2026-08-29T08:48:55.426912+00:00", "kind": "site_page", "missing": false, "url": "https://istanbul.js.org/docs/tutorials"}, {"content_hash": "95604956c652381afcad7c60a4b0a22adbd628aee3ea19675f365a52dbfb1e0b", "fetched_at": "2026-08-29T08:48:55.428561+00:00", "kind": "site_page", "missing": false, "url": "https://istanbul.js.org/docs/advanced"}, {"content_hash": "8141228828654594621f4167f7aaef60941a31f014074718c7ac3258989d831a", "fetched_at": "2026-08-29T08:48:55.430044+00:00", "kind": "site_page", "missing": false, "url": "https://istanbul.js.org/integrations"}], "taxonomy_version": 1}, "pushed_at": {"kind": "observed", "observed_at": "2026-08-28T04:09:29.403956+00:00", "source": "github"}, "repo": {"kind": "observed", "observed_at": "2026-08-28T04:09:29.403956+00:00", "source": "github"}, "stars": {"kind": "observed", "observed_at": "2026-08-28T04:09:29.403956+00:00", "source": "github"}, "tags": {"confidence": null, "enriched_at": "2026-08-29T17:52:55.463414+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "2d7e255ac0bc97fd199b9836331c6f6f85fff32f31e22b1fe57085c4b2aa6ea5", "fetched_at": "2026-08-28T04:09:29.403956+00:00", "kind": "readme", "missing": false, "url": "https://github.com/istanbuljs/nyc"}, {"content_hash": "fd7d4665a9562b20a9f5aa9a3bb16899cea6859f819b55dfef214e4b6e47c5e9", "fetched_at": "2026-08-29T08:48:55.424420+00:00", "kind": "homepage", "missing": false, "url": "https://istanbul.js.org/"}, {"content_hash": "e230905c262ad20d14bfb9b5c63e13ecf6eea6515466d01c7bd3a95f3098af1d", "fetched_at": "2026-08-29T08:48:55.426912+00:00", "kind": "site_page", "missing": false, "url": "https://istanbul.js.org/docs/tutorials"}, {"content_hash": "95604956c652381afcad7c60a4b0a22adbd628aee3ea19675f365a52dbfb1e0b", "fetched_at": "2026-08-29T08:48:55.428561+00:00", "kind": "site_page", "missing": false, "url": "https://istanbul.js.org/docs/advanced"}, {"content_hash": "8141228828654594621f4167f7aaef60941a31f014074718c7ac3258989d831a", "fetched_at": "2026-08-29T08:48:55.430044+00:00", "kind": "site_page", "missing": false, "url": "https://istanbul.js.org/integrations"}], "taxonomy_version": 1}, "topics": {"kind": "observed", "observed_at": "2026-08-28T04:09:29.403956+00:00", "source": "github"}, "urls": {"kind": "observed", "observed_at": "2026-08-28T04:09:29.403956+00:00", "source": "github"}, "use_cases": {"confidence": null, "enriched_at": "2026-08-29T17:52:55.463414+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "2d7e255ac0bc97fd199b9836331c6f6f85fff32f31e22b1fe57085c4b2aa6ea5", "fetched_at": "2026-08-28T04:09:29.403956+00:00", "kind": "readme", "missing": false, "url": "https://github.com/istanbuljs/nyc"}, {"content_hash": "fd7d4665a9562b20a9f5aa9a3bb16899cea6859f819b55dfef214e4b6e47c5e9", "fetched_at": "2026-08-29T08:48:55.424420+00:00", "kind": "homepage", "missing": false, "url": "https://istanbul.js.org/"}, {"content_hash": "e230905c262ad20d14bfb9b5c63e13ecf6eea6515466d01c7bd3a95f3098af1d", "fetched_at": "2026-08-29T08:48:55.426912+00:00", "kind": "site_page", "missing": false, "url": "https://istanbul.js.org/docs/tutorials"}, {"content_hash": "95604956c652381afcad7c60a4b0a22adbd628aee3ea19675f365a52dbfb1e0b", "fetched_at": "2026-08-29T08:48:55.428561+00:00", "kind": "site_page", "missing": false, "url": "https://istanbul.js.org/docs/advanced"}, {"content_hash": "8141228828654594621f4167f7aaef60941a31f014074718c7ac3258989d831a", "fetched_at": "2026-08-29T08:48:55.430044+00:00", "kind": "site_page", "missing": false, "url": "https://istanbul.js.org/integrations"}], "taxonomy_version": 1}, "what_it_is": {"confidence": null, "enriched_at": "2026-08-29T17:52:55.463414+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "2d7e255ac0bc97fd199b9836331c6f6f85fff32f31e22b1fe57085c4b2aa6ea5", "fetched_at": "2026-08-28T04:09:29.403956+00:00", "kind": "readme", "missing": false, "url": "https://github.com/istanbuljs/nyc"}, {"content_hash": "fd7d4665a9562b20a9f5aa9a3bb16899cea6859f819b55dfef214e4b6e47c5e9", "fetched_at": "2026-08-29T08:48:55.424420+00:00", "kind": "homepage", "missing": false, "url": "https://istanbul.js.org/"}, {"content_hash": "e230905c262ad20d14bfb9b5c63e13ecf6eea6515466d01c7bd3a95f3098af1d", "fetched_at": "2026-08-29T08:48:55.426912+00:00", "kind": "site_page", "missing": false, "url": "https://istanbul.js.org/docs/tutorials"}, {"content_hash": "95604956c652381afcad7c60a4b0a22adbd628aee3ea19675f365a52dbfb1e0b", "fetched_at": "2026-08-29T08:48:55.428561+00:00", "kind": "site_page", "missing": false, "url": "https://istanbul.js.org/docs/advanced"}, {"content_hash": "8141228828654594621f4167f7aaef60941a31f014074718c7ac3258989d831a", "fetched_at": "2026-08-29T08:48:55.430044+00:00", "kind": "site_page", "missing": false, "url": "https://istanbul.js.org/integrations"}], "taxonomy_version": 1}, "when_to_avoid": {"confidence": null, "enriched_at": "2026-08-29T17:52:55.463414+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "2d7e255ac0bc97fd199b9836331c6f6f85fff32f31e22b1fe57085c4b2aa6ea5", "fetched_at": "2026-08-28T04:09:29.403956+00:00", "kind": "readme", "missing": false, "url": "https://github.com/istanbuljs/nyc"}, {"content_hash": "fd7d4665a9562b20a9f5aa9a3bb16899cea6859f819b55dfef214e4b6e47c5e9", "fetched_at": "2026-08-29T08:48:55.424420+00:00", "kind": "homepage", "missing": false, "url": "https://istanbul.js.org/"}, {"content_hash": "e230905c262ad20d14bfb9b5c63e13ecf6eea6515466d01c7bd3a95f3098af1d", "fetched_at": "2026-08-29T08:48:55.426912+00:00", "kind": "site_page", "missing": false, "url": "https://istanbul.js.org/docs/tutorials"}, {"content_hash": "95604956c652381afcad7c60a4b0a22adbd628aee3ea19675f365a52dbfb1e0b", "fetched_at": "2026-08-29T08:48:55.428561+00:00", "kind": "site_page", "missing": false, "url": "https://istanbul.js.org/docs/advanced"}, {"content_hash": "8141228828654594621f4167f7aaef60941a31f014074718c7ac3258989d831a", "fetched_at": "2026-08-29T08:48:55.430044+00:00", "kind": "site_page", "missing": false, "url": "https://istanbul.js.org/integrations"}], "taxonomy_version": 1}, "when_to_choose": {"confidence": null, "enriched_at": "2026-08-29T17:52:55.463414+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "2d7e255ac0bc97fd199b9836331c6f6f85fff32f31e22b1fe57085c4b2aa6ea5", "fetched_at": "2026-08-28T04:09:29.403956+00:00", "kind": "readme", "missing": false, "url": "https://github.com/istanbuljs/nyc"}, {"content_hash": "fd7d4665a9562b20a9f5aa9a3bb16899cea6859f819b55dfef214e4b6e47c5e9", "fetched_at": "2026-08-29T08:48:55.424420+00:00", "kind": "homepage", "missing": false, "url": "https://istanbul.js.org/"}, {"content_hash": "e230905c262ad20d14bfb9b5c63e13ecf6eea6515466d01c7bd3a95f3098af1d", "fetched_at": "2026-08-29T08:48:55.426912+00:00", "kind": "site_page", "missing": false, "url": "https://istanbul.js.org/docs/tutorials"}, {"content_hash": "95604956c652381afcad7c60a4b0a22adbd628aee3ea19675f365a52dbfb1e0b", "fetched_at": "2026-08-29T08:48:55.428561+00:00", "kind": "site_page", "missing": false, "url": "https://istanbul.js.org/docs/advanced"}, {"content_hash": "8141228828654594621f4167f7aaef60941a31f014074718c7ac3258989d831a", "fetched_at": "2026-08-29T08:48:55.430044+00:00", "kind": "site_page", "missing": false, "url": "https://istanbul.js.org/integrations"}], "taxonomy_version": 1}}, "score": {"components": {"activity": 82, "longevity": 100, "rhythm": 39}, "computed_at": "2026-09-03T02:20:16.233290+00:00", "flags": [], "formula": "round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)", "inputs": {"age_days": 4134, "days_push": 108, "days_rel": 192, "gap_med": 521, "n_releases_24m": 2}, "score": 71, "version": 2}, "staleness": {"enrichment_outdated": false, "low_confidence": false, "scrape_days": 9, "stale_scrape": false}}