{"adoption": {"forks": 85, "observed_at": "2026-08-28T04:06:06.881871+00:00", "stars": 2026}, "canonical_url": "https://ross.abutalabs.com/products/fengari", "card": {"archived": false, "artifact_type": "library", "description": "🌙 φεγγάρι - The Lua VM written in JS ES6 for Node and the browser", "domain": ["programming-languages", "parsers", "web-development", "developer-tools"], "enriched": true, "function": ["interpreter", "parser", "programming-language"], "health_score": 72, "homepage": null, "language": "JavaScript", "license": "MIT", "license_family": "permissive", "maturity": "active", "member_repos": ["fengari-lua/fengari"], "name": "fengari-lua/fengari", "platform": ["browser"], "pushed_at": "2026-01-02T13:02:57+00:00", "repo": "fengari-lua/fengari", "stars": 2026, "tags": ["lua-vm", "es6", "virtual-machine", "lua-53", "runtime", "nodejs", "javascript", "web"], "topics": ["lua", "javascript", "es6", "vm", "fengari", "lua-vm"], "urls": [], "use_cases": ["run Lua scripts in the browser", "embed a Lua interpreter in a Node.js application", "execute user-provided Lua code safely in a web app", "port Lua programs to JavaScript environments", "build a web-based Lua playground or REPL", "script game or app logic in Lua from JavaScript"], "what_it_is": "Fengari is a complete Lua 5.3 virtual machine, parser, and base libraries ported from the Lua C library to JavaScript ES6, runnable in Node.js and the browser. It exposes the same C API as native Lua through a JS API, letting developers embed and execute Lua code in JavaScript environments.", "when_to_avoid": ["you need maximum Lua execution performance (use native Lua or LuaJIT)", "you need Lua 5.4 features or newer semantics", "you only need to parse or lint Lua rather than execute it"], "when_to_choose": ["you need to run Lua code where only JavaScript is available (browser or Node)", "you want Lua 5.3 semantics without native compilation", "you're building tools that let users write Lua scripts in web apps"]}, "data_as_of": "2026-08-30T08:39:29.467469+00:00", "members": [{"path": "/products/fengari", "repo": "fengari-lua/fengari", "role": "main", "score": 58}], "provenance": {"archived": {"kind": "observed", "observed_at": "2026-08-28T04:06:06.881871+00:00", "source": "github"}, "artifact_type": {"confidence": null, "enriched_at": "2026-08-30T02:59:44.038248+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "2f2aab5d77cd0f794cc743a31779fd030a03076bea2005e7faa9824bbba4b580", "fetched_at": "2026-08-28T04:06:06.881871+00:00", "kind": "readme", "missing": false, "url": "https://github.com/fengari-lua/fengari"}, {"content_hash": "7f2d1d41df405b3b9ce2dffa60a30482fbb4f1acfb08ce1cf7e272e3ca9ec0eb", "fetched_at": "2026-08-29T10:39:58.929050+00:00", "kind": "registry_npm", "missing": false, "url": "https://registry.npmjs.org/fengari"}], "taxonomy_version": 1}, "description": {"kind": "observed", "observed_at": "2026-08-28T04:06:06.881871+00:00", "source": "github"}, "domain": {"confidence": null, "enriched_at": "2026-08-30T02:59:44.038248+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "2f2aab5d77cd0f794cc743a31779fd030a03076bea2005e7faa9824bbba4b580", "fetched_at": "2026-08-28T04:06:06.881871+00:00", "kind": "readme", "missing": false, "url": "https://github.com/fengari-lua/fengari"}, {"content_hash": "7f2d1d41df405b3b9ce2dffa60a30482fbb4f1acfb08ce1cf7e272e3ca9ec0eb", "fetched_at": "2026-08-29T10:39:58.929050+00:00", "kind": "registry_npm", "missing": false, "url": "https://registry.npmjs.org/fengari"}], "taxonomy_version": 1}, "enriched": {"inputs": [], "kind": "computed", "method": "enrichment_status"}, "function": {"confidence": null, "enriched_at": "2026-08-30T02:59:44.038248+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "2f2aab5d77cd0f794cc743a31779fd030a03076bea2005e7faa9824bbba4b580", "fetched_at": "2026-08-28T04:06:06.881871+00:00", "kind": "readme", "missing": false, "url": "https://github.com/fengari-lua/fengari"}, {"content_hash": "7f2d1d41df405b3b9ce2dffa60a30482fbb4f1acfb08ce1cf7e272e3ca9ec0eb", "fetched_at": "2026-08-29T10:39:58.929050+00:00", "kind": "registry_npm", "missing": false, "url": "https://registry.npmjs.org/fengari"}], "taxonomy_version": 1}, "health_score": {"inputs": ["days_since_push", "days_since_release", "archived"], "kind": "computed", "method": "health_v1"}, "homepage": {"kind": "observed", "observed_at": "2026-08-28T04:06:06.881871+00:00", "source": "github"}, "language": {"kind": "observed", "observed_at": "2026-08-28T04:06:06.881871+00:00", "source": "github"}, "license": {"kind": "observed", "observed_at": "2026-08-28T04:06:06.881871+00:00", "source": "github"}, "license_family": {"inputs": ["license"], "kind": "computed", "method": "license_family"}, "maturity": {"confidence": null, "enriched_at": "2026-08-30T02:59:44.038248+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "2f2aab5d77cd0f794cc743a31779fd030a03076bea2005e7faa9824bbba4b580", "fetched_at": "2026-08-28T04:06:06.881871+00:00", "kind": "readme", "missing": false, "url": "https://github.com/fengari-lua/fengari"}, {"content_hash": "7f2d1d41df405b3b9ce2dffa60a30482fbb4f1acfb08ce1cf7e272e3ca9ec0eb", "fetched_at": "2026-08-29T10:39:58.929050+00:00", "kind": "registry_npm", "missing": false, "url": "https://registry.npmjs.org/fengari"}], "taxonomy_version": 1}, "member_repos": {"kind": "observed", "observed_at": "2026-08-28T04:06:06.881871+00:00", "source": "github"}, "name": {"kind": "observed", "observed_at": "2026-08-28T04:06:06.881871+00:00", "source": "github"}, "platform": {"confidence": null, "enriched_at": "2026-08-30T02:59:44.038248+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "2f2aab5d77cd0f794cc743a31779fd030a03076bea2005e7faa9824bbba4b580", "fetched_at": "2026-08-28T04:06:06.881871+00:00", "kind": "readme", "missing": false, "url": "https://github.com/fengari-lua/fengari"}, {"content_hash": "7f2d1d41df405b3b9ce2dffa60a30482fbb4f1acfb08ce1cf7e272e3ca9ec0eb", "fetched_at": "2026-08-29T10:39:58.929050+00:00", "kind": "registry_npm", "missing": false, "url": "https://registry.npmjs.org/fengari"}], "taxonomy_version": 1}, "pushed_at": {"kind": "observed", "observed_at": "2026-08-28T04:06:06.881871+00:00", "source": "github"}, "repo": {"kind": "observed", "observed_at": "2026-08-28T04:06:06.881871+00:00", "source": "github"}, "stars": {"kind": "observed", "observed_at": "2026-08-28T04:06:06.881871+00:00", "source": "github"}, "tags": {"confidence": null, "enriched_at": "2026-08-30T02:59:44.038248+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "2f2aab5d77cd0f794cc743a31779fd030a03076bea2005e7faa9824bbba4b580", "fetched_at": "2026-08-28T04:06:06.881871+00:00", "kind": "readme", "missing": false, "url": "https://github.com/fengari-lua/fengari"}, {"content_hash": "7f2d1d41df405b3b9ce2dffa60a30482fbb4f1acfb08ce1cf7e272e3ca9ec0eb", "fetched_at": "2026-08-29T10:39:58.929050+00:00", "kind": "registry_npm", "missing": false, "url": "https://registry.npmjs.org/fengari"}], "taxonomy_version": 1}, "topics": {"kind": "observed", "observed_at": "2026-08-28T04:06:06.881871+00:00", "source": "github"}, "urls": {"kind": "observed", "observed_at": "2026-08-28T04:06:06.881871+00:00", "source": "github"}, "use_cases": {"confidence": null, "enriched_at": "2026-08-30T02:59:44.038248+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "2f2aab5d77cd0f794cc743a31779fd030a03076bea2005e7faa9824bbba4b580", "fetched_at": "2026-08-28T04:06:06.881871+00:00", "kind": "readme", "missing": false, "url": "https://github.com/fengari-lua/fengari"}, {"content_hash": "7f2d1d41df405b3b9ce2dffa60a30482fbb4f1acfb08ce1cf7e272e3ca9ec0eb", "fetched_at": "2026-08-29T10:39:58.929050+00:00", "kind": "registry_npm", "missing": false, "url": "https://registry.npmjs.org/fengari"}], "taxonomy_version": 1}, "what_it_is": {"confidence": null, "enriched_at": "2026-08-30T02:59:44.038248+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "2f2aab5d77cd0f794cc743a31779fd030a03076bea2005e7faa9824bbba4b580", "fetched_at": "2026-08-28T04:06:06.881871+00:00", "kind": "readme", "missing": false, "url": "https://github.com/fengari-lua/fengari"}, {"content_hash": "7f2d1d41df405b3b9ce2dffa60a30482fbb4f1acfb08ce1cf7e272e3ca9ec0eb", "fetched_at": "2026-08-29T10:39:58.929050+00:00", "kind": "registry_npm", "missing": false, "url": "https://registry.npmjs.org/fengari"}], "taxonomy_version": 1}, "when_to_avoid": {"confidence": null, "enriched_at": "2026-08-30T02:59:44.038248+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "2f2aab5d77cd0f794cc743a31779fd030a03076bea2005e7faa9824bbba4b580", "fetched_at": "2026-08-28T04:06:06.881871+00:00", "kind": "readme", "missing": false, "url": "https://github.com/fengari-lua/fengari"}, {"content_hash": "7f2d1d41df405b3b9ce2dffa60a30482fbb4f1acfb08ce1cf7e272e3ca9ec0eb", "fetched_at": "2026-08-29T10:39:58.929050+00:00", "kind": "registry_npm", "missing": false, "url": "https://registry.npmjs.org/fengari"}], "taxonomy_version": 1}, "when_to_choose": {"confidence": null, "enriched_at": "2026-08-30T02:59:44.038248+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "2f2aab5d77cd0f794cc743a31779fd030a03076bea2005e7faa9824bbba4b580", "fetched_at": "2026-08-28T04:06:06.881871+00:00", "kind": "readme", "missing": false, "url": "https://github.com/fengari-lua/fengari"}, {"content_hash": "7f2d1d41df405b3b9ce2dffa60a30482fbb4f1acfb08ce1cf7e272e3ca9ec0eb", "fetched_at": "2026-08-29T10:39:58.929050+00:00", "kind": "registry_npm", "missing": false, "url": "https://registry.npmjs.org/fengari"}], "taxonomy_version": 1}}, "score": {"components": {"activity": 60, "longevity": 100, "rhythm": 31}, "computed_at": "2026-09-02T17:46:02.011165+00:00", "flags": [], "formula": "round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)", "inputs": {"age_days": 3500, "days_push": 243, "days_rel": 250, "gap_med": null, "n_releases_24m": 1}, "score": 58, "version": 2}, "staleness": {"enrichment_outdated": false, "low_confidence": false, "scrape_days": 9, "stale_scrape": false}}