{"adoption": {"forks": 125, "observed_at": "2026-08-28T04:03:47.870008+00:00", "stars": 1155}, "canonical_url": "https://ross.abutalabs.com/products/sylvester", "card": {"archived": false, "artifact_type": "library", "description": "Vector, matrix and geometry math JavaScript", "domain": ["graphics", "web-development"], "enriched": true, "function": ["math"], "health_score": 20, "homepage": "http://sylvester.jcoglan.com", "language": "JavaScript", "license": null, "license_family": "other", "maturity": "maintenance", "member_repos": ["jcoglan/sylvester"], "name": "jcoglan/sylvester", "platform": ["browser", "cross-platform"], "pushed_at": "2019-05-13T07:43:54+00:00", "repo": "jcoglan/sylvester", "stars": 1155, "tags": ["linear-algebra", "vectors", "matrices", "geometry", "javascript", "algorithms", "nodejs"], "topics": [], "urls": [], "use_cases": ["do vector and matrix math in javascript", "compute dot and cross products in the browser", "linear algebra library for node.js", "model lines and planes in 3d space", "multiply matrices in javascript"], "what_it_is": "Sylvester is a JavaScript library for vector, matrix, and geometry math, supporting any number of dimensions plus lines and planes in 3D space. It runs in browsers and on server-side JavaScript runtimes.", "when_to_avoid": ["you need GPU-accelerated or high-performance linear algebra for graphics or ML", "you need an actively maintained library with recent updates", "you need tensors or multidimensional arrays beyond vectors and matrices"], "when_to_choose": ["you need simple object-oriented vector/matrix operations in JavaScript", "you want a lightweight, dependency-free math library for browser or Node"]}, "data_as_of": "2026-08-30T08:39:29.467469+00:00", "members": [{"path": "/products/sylvester", "repo": "jcoglan/sylvester", "role": "main", "score": 32}], "provenance": {"archived": {"kind": "observed", "observed_at": "2026-08-28T04:03:47.870008+00:00", "source": "github"}, "artifact_type": {"confidence": null, "enriched_at": "2026-08-30T06:32:13.362149+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "b7ee488dbe6b1603a8c0e650c72865c95050c88efb682f6c3ee01073a08efb85", "fetched_at": "2026-08-28T04:03:47.870008+00:00", "kind": "readme", "missing": false, "url": "https://github.com/jcoglan/sylvester"}, {"content_hash": "2c638d5928a0c8af764fdcf6265073d964cf9a9c431bf1eeab5b11a2f728193b", "fetched_at": "2026-08-29T12:37:50.499507+00:00", "kind": "homepage", "missing": false, "url": "http://sylvester.jcoglan.com"}, {"content_hash": "dc4b10edb762bd5787e1d204339319b04ae82d7e179bb93af052b8870174c3c7", "fetched_at": "2026-08-29T12:37:50.508486+00:00", "kind": "site_page", "missing": false, "url": "http://sylvester.jcoglan.com/docs.html"}], "taxonomy_version": 1}, "description": {"kind": "observed", "observed_at": "2026-08-28T04:03:47.870008+00:00", "source": "github"}, "domain": {"confidence": null, "enriched_at": "2026-08-30T06:32:13.362149+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "b7ee488dbe6b1603a8c0e650c72865c95050c88efb682f6c3ee01073a08efb85", "fetched_at": "2026-08-28T04:03:47.870008+00:00", "kind": "readme", "missing": false, "url": "https://github.com/jcoglan/sylvester"}, {"content_hash": "2c638d5928a0c8af764fdcf6265073d964cf9a9c431bf1eeab5b11a2f728193b", "fetched_at": "2026-08-29T12:37:50.499507+00:00", "kind": "homepage", "missing": false, "url": "http://sylvester.jcoglan.com"}, {"content_hash": "dc4b10edb762bd5787e1d204339319b04ae82d7e179bb93af052b8870174c3c7", "fetched_at": "2026-08-29T12:37:50.508486+00:00", "kind": "site_page", "missing": false, "url": "http://sylvester.jcoglan.com/docs.html"}], "taxonomy_version": 1}, "enriched": {"inputs": [], "kind": "computed", "method": "enrichment_status"}, "function": {"confidence": null, "enriched_at": "2026-08-30T06:32:13.362149+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "b7ee488dbe6b1603a8c0e650c72865c95050c88efb682f6c3ee01073a08efb85", "fetched_at": "2026-08-28T04:03:47.870008+00:00", "kind": "readme", "missing": false, "url": "https://github.com/jcoglan/sylvester"}, {"content_hash": "2c638d5928a0c8af764fdcf6265073d964cf9a9c431bf1eeab5b11a2f728193b", "fetched_at": "2026-08-29T12:37:50.499507+00:00", "kind": "homepage", "missing": false, "url": "http://sylvester.jcoglan.com"}, {"content_hash": "dc4b10edb762bd5787e1d204339319b04ae82d7e179bb93af052b8870174c3c7", "fetched_at": "2026-08-29T12:37:50.508486+00:00", "kind": "site_page", "missing": false, "url": "http://sylvester.jcoglan.com/docs.html"}], "taxonomy_version": 1}, "health_score": {"inputs": ["days_since_push", "days_since_release", "archived"], "kind": "computed", "method": "health_v1"}, "homepage": {"kind": "observed", "observed_at": "2026-08-28T04:03:47.870008+00:00", "source": "github"}, "language": {"kind": "observed", "observed_at": "2026-08-28T04:03:47.870008+00:00", "source": "github"}, "license": {"kind": "observed", "observed_at": "2026-08-28T04:03:47.870008+00:00", "source": "github"}, "license_family": {"inputs": ["license"], "kind": "computed", "method": "license_family"}, "maturity": {"confidence": null, "enriched_at": "2026-08-30T06:32:13.362149+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "b7ee488dbe6b1603a8c0e650c72865c95050c88efb682f6c3ee01073a08efb85", "fetched_at": "2026-08-28T04:03:47.870008+00:00", "kind": "readme", "missing": false, "url": "https://github.com/jcoglan/sylvester"}, {"content_hash": "2c638d5928a0c8af764fdcf6265073d964cf9a9c431bf1eeab5b11a2f728193b", "fetched_at": "2026-08-29T12:37:50.499507+00:00", "kind": "homepage", "missing": false, "url": "http://sylvester.jcoglan.com"}, {"content_hash": "dc4b10edb762bd5787e1d204339319b04ae82d7e179bb93af052b8870174c3c7", "fetched_at": "2026-08-29T12:37:50.508486+00:00", "kind": "site_page", "missing": false, "url": "http://sylvester.jcoglan.com/docs.html"}], "taxonomy_version": 1}, "member_repos": {"kind": "observed", "observed_at": "2026-08-28T04:03:47.870008+00:00", "source": "github"}, "name": {"kind": "observed", "observed_at": "2026-08-28T04:03:47.870008+00:00", "source": "github"}, "platform": {"confidence": null, "enriched_at": "2026-08-30T06:32:13.362149+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "b7ee488dbe6b1603a8c0e650c72865c95050c88efb682f6c3ee01073a08efb85", "fetched_at": "2026-08-28T04:03:47.870008+00:00", "kind": "readme", "missing": false, "url": "https://github.com/jcoglan/sylvester"}, {"content_hash": "2c638d5928a0c8af764fdcf6265073d964cf9a9c431bf1eeab5b11a2f728193b", "fetched_at": "2026-08-29T12:37:50.499507+00:00", "kind": "homepage", "missing": false, "url": "http://sylvester.jcoglan.com"}, {"content_hash": "dc4b10edb762bd5787e1d204339319b04ae82d7e179bb93af052b8870174c3c7", "fetched_at": "2026-08-29T12:37:50.508486+00:00", "kind": "site_page", "missing": false, "url": "http://sylvester.jcoglan.com/docs.html"}], "taxonomy_version": 1}, "pushed_at": {"kind": "observed", "observed_at": "2026-08-28T04:03:47.870008+00:00", "source": "github"}, "repo": {"kind": "observed", "observed_at": "2026-08-28T04:03:47.870008+00:00", "source": "github"}, "stars": {"kind": "observed", "observed_at": "2026-08-28T04:03:47.870008+00:00", "source": "github"}, "tags": {"confidence": null, "enriched_at": "2026-08-30T06:32:13.362149+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "b7ee488dbe6b1603a8c0e650c72865c95050c88efb682f6c3ee01073a08efb85", "fetched_at": "2026-08-28T04:03:47.870008+00:00", "kind": "readme", "missing": false, "url": "https://github.com/jcoglan/sylvester"}, {"content_hash": "2c638d5928a0c8af764fdcf6265073d964cf9a9c431bf1eeab5b11a2f728193b", "fetched_at": "2026-08-29T12:37:50.499507+00:00", "kind": "homepage", "missing": false, "url": "http://sylvester.jcoglan.com"}, {"content_hash": "dc4b10edb762bd5787e1d204339319b04ae82d7e179bb93af052b8870174c3c7", "fetched_at": "2026-08-29T12:37:50.508486+00:00", "kind": "site_page", "missing": false, "url": "http://sylvester.jcoglan.com/docs.html"}], "taxonomy_version": 1}, "topics": {"kind": "observed", "observed_at": "2026-08-28T04:03:47.870008+00:00", "source": "github"}, "urls": {"kind": "observed", "observed_at": "2026-08-28T04:03:47.870008+00:00", "source": "github"}, "use_cases": {"confidence": null, "enriched_at": "2026-08-30T06:32:13.362149+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "b7ee488dbe6b1603a8c0e650c72865c95050c88efb682f6c3ee01073a08efb85", "fetched_at": "2026-08-28T04:03:47.870008+00:00", "kind": "readme", "missing": false, "url": "https://github.com/jcoglan/sylvester"}, {"content_hash": "2c638d5928a0c8af764fdcf6265073d964cf9a9c431bf1eeab5b11a2f728193b", "fetched_at": "2026-08-29T12:37:50.499507+00:00", "kind": "homepage", "missing": false, "url": "http://sylvester.jcoglan.com"}, {"content_hash": "dc4b10edb762bd5787e1d204339319b04ae82d7e179bb93af052b8870174c3c7", "fetched_at": "2026-08-29T12:37:50.508486+00:00", "kind": "site_page", "missing": false, "url": "http://sylvester.jcoglan.com/docs.html"}], "taxonomy_version": 1}, "what_it_is": {"confidence": null, "enriched_at": "2026-08-30T06:32:13.362149+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "b7ee488dbe6b1603a8c0e650c72865c95050c88efb682f6c3ee01073a08efb85", "fetched_at": "2026-08-28T04:03:47.870008+00:00", "kind": "readme", "missing": false, "url": "https://github.com/jcoglan/sylvester"}, {"content_hash": "2c638d5928a0c8af764fdcf6265073d964cf9a9c431bf1eeab5b11a2f728193b", "fetched_at": "2026-08-29T12:37:50.499507+00:00", "kind": "homepage", "missing": false, "url": "http://sylvester.jcoglan.com"}, {"content_hash": "dc4b10edb762bd5787e1d204339319b04ae82d7e179bb93af052b8870174c3c7", "fetched_at": "2026-08-29T12:37:50.508486+00:00", "kind": "site_page", "missing": false, "url": "http://sylvester.jcoglan.com/docs.html"}], "taxonomy_version": 1}, "when_to_avoid": {"confidence": null, "enriched_at": "2026-08-30T06:32:13.362149+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "b7ee488dbe6b1603a8c0e650c72865c95050c88efb682f6c3ee01073a08efb85", "fetched_at": "2026-08-28T04:03:47.870008+00:00", "kind": "readme", "missing": false, "url": "https://github.com/jcoglan/sylvester"}, {"content_hash": "2c638d5928a0c8af764fdcf6265073d964cf9a9c431bf1eeab5b11a2f728193b", "fetched_at": "2026-08-29T12:37:50.499507+00:00", "kind": "homepage", "missing": false, "url": "http://sylvester.jcoglan.com"}, {"content_hash": "dc4b10edb762bd5787e1d204339319b04ae82d7e179bb93af052b8870174c3c7", "fetched_at": "2026-08-29T12:37:50.508486+00:00", "kind": "site_page", "missing": false, "url": "http://sylvester.jcoglan.com/docs.html"}], "taxonomy_version": 1}, "when_to_choose": {"confidence": null, "enriched_at": "2026-08-30T06:32:13.362149+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "b7ee488dbe6b1603a8c0e650c72865c95050c88efb682f6c3ee01073a08efb85", "fetched_at": "2026-08-28T04:03:47.870008+00:00", "kind": "readme", "missing": false, "url": "https://github.com/jcoglan/sylvester"}, {"content_hash": "2c638d5928a0c8af764fdcf6265073d964cf9a9c431bf1eeab5b11a2f728193b", "fetched_at": "2026-08-29T12:37:50.499507+00:00", "kind": "homepage", "missing": false, "url": "http://sylvester.jcoglan.com"}, {"content_hash": "dc4b10edb762bd5787e1d204339319b04ae82d7e179bb93af052b8870174c3c7", "fetched_at": "2026-08-29T12:37:50.508486+00:00", "kind": "site_page", "missing": false, "url": "http://sylvester.jcoglan.com/docs.html"}], "taxonomy_version": 1}}, "score": {"components": {"activity": 0, "longevity": 100, "rhythm": 35}, "computed_at": "2026-09-03T02:20:16.233290+00:00", "flags": ["no_releases", "no_license"], "formula": "round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)", "inputs": {"age_days": 6633, "days_push": 2669, "days_rel": null, "gap_med": null, "n_releases_24m": 0}, "score": 32, "version": 2}, "staleness": {"enrichment_outdated": false, "low_confidence": false, "scrape_days": 9, "stale_scrape": false}}