{"adoption": {"forks": 855, "observed_at": "2026-08-28T04:09:43.270077+00:00", "stars": 6414}, "canonical_url": "https://ross.abutalabs.com/products/jsnes", "card": {"archived": false, "artifact_type": "library", "description": "A JavaScript NES emulator.", "domain": ["gaming-tools", "web-development", "frontend", "cross-platform"], "enriched": true, "function": ["game-engine", "graphics", "audio-processing", "sdk"], "health_score": 98, "homepage": "https://jsnes.org", "language": "JavaScript", "license": "Apache-2.0", "license_family": "permissive", "maturity": "active", "member_repos": ["bfirsh/jsnes"], "name": "bfirsh/jsnes", "platform": ["browser", "cross-platform"], "pushed_at": "2026-08-25T06:24:06+00:00", "repo": "bfirsh/jsnes", "stars": 6414, "tags": ["nes-emulator", "emulation", "6502", "retro-gaming", "canvas", "gamepad", "react", "nodejs", "javascript"], "topics": ["nes", "emulation", "javascript", "emulator", "6502"], "urls": [], "use_cases": ["embed a playable NES emulator in a web page", "run NES ROMs in Node.js", "build a React-based retro game player", "add gamepad and keyboard input to an emulator frontend", "render NES frames to a custom canvas or audio pipeline"], "what_it_is": "JSNES is a Nintendo Entertainment System (NES) emulator written in JavaScript, distributed as a library usable in both the browser and Node.js. It provides a high-level Browser component with rendering, audio, and input handling, plus a low-level NES class for custom integrations.", "when_to_avoid": ["you need to emulate consoles other than the NES", "you require cycle-accurate, high-fidelity emulation for serious preservation work", "you want a ready-made desktop emulator application"], "when_to_choose": ["you want to emulate NES games in JavaScript without native dependencies", "you need a library-level emulator to embed in your own web app or React project", "you want headless emulation in Node.js with custom rendering or audio"]}, "data_as_of": "2026-08-30T08:39:29.467469+00:00", "members": [{"path": "/products/jsnes", "repo": "bfirsh/jsnes", "role": "main", "score": 88}], "provenance": {"archived": {"kind": "observed", "observed_at": "2026-08-28T04:09:43.270077+00:00", "source": "github"}, "artifact_type": {"confidence": null, "enriched_at": "2026-08-29T17:44:55.298442+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "3b8bf53e03db7d030e791c2e362b76ad963144d7510fe47d609d6d7f8574e0ea", "fetched_at": "2026-08-28T04:09:43.270077+00:00", "kind": "readme", "missing": false, "url": "https://github.com/bfirsh/jsnes"}, {"content_hash": "f4909a444992f9de6229a35315e0085a1e8fcee94156f394533f8f35546827f2", "fetched_at": "2026-08-29T08:42:00.383899+00:00", "kind": "homepage", "missing": false, "url": "https://jsnes.org"}, {"content_hash": "22b535618515c9131c2040dd67dc1ebff42f51c812215b645a8c99d3f44ceee3", "fetched_at": "2026-08-29T08:42:00.393757+00:00", "kind": "registry_npm", "missing": false, "url": "https://registry.npmjs.org/jsnes"}], "taxonomy_version": 1}, "description": {"kind": "observed", "observed_at": "2026-08-28T04:09:43.270077+00:00", "source": "github"}, "domain": {"confidence": null, "enriched_at": "2026-08-29T17:44:55.298442+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "3b8bf53e03db7d030e791c2e362b76ad963144d7510fe47d609d6d7f8574e0ea", "fetched_at": "2026-08-28T04:09:43.270077+00:00", "kind": "readme", "missing": false, "url": "https://github.com/bfirsh/jsnes"}, {"content_hash": "f4909a444992f9de6229a35315e0085a1e8fcee94156f394533f8f35546827f2", "fetched_at": "2026-08-29T08:42:00.383899+00:00", "kind": "homepage", "missing": false, "url": "https://jsnes.org"}, {"content_hash": "22b535618515c9131c2040dd67dc1ebff42f51c812215b645a8c99d3f44ceee3", "fetched_at": "2026-08-29T08:42:00.393757+00:00", "kind": "registry_npm", "missing": false, "url": "https://registry.npmjs.org/jsnes"}], "taxonomy_version": 1}, "enriched": {"inputs": [], "kind": "computed", "method": "enrichment_status"}, "function": {"confidence": null, "enriched_at": "2026-08-29T17:44:55.298442+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "3b8bf53e03db7d030e791c2e362b76ad963144d7510fe47d609d6d7f8574e0ea", "fetched_at": "2026-08-28T04:09:43.270077+00:00", "kind": "readme", "missing": false, "url": "https://github.com/bfirsh/jsnes"}, {"content_hash": "f4909a444992f9de6229a35315e0085a1e8fcee94156f394533f8f35546827f2", "fetched_at": "2026-08-29T08:42:00.383899+00:00", "kind": "homepage", "missing": false, "url": "https://jsnes.org"}, {"content_hash": "22b535618515c9131c2040dd67dc1ebff42f51c812215b645a8c99d3f44ceee3", "fetched_at": "2026-08-29T08:42:00.393757+00:00", "kind": "registry_npm", "missing": false, "url": "https://registry.npmjs.org/jsnes"}], "taxonomy_version": 1}, "health_score": {"inputs": ["days_since_push", "days_since_release", "archived"], "kind": "computed", "method": "health_v1"}, "homepage": {"kind": "observed", "observed_at": "2026-08-28T04:09:43.270077+00:00", "source": "github"}, "language": {"kind": "observed", "observed_at": "2026-08-28T04:09:43.270077+00:00", "source": "github"}, "license": {"kind": "observed", "observed_at": "2026-08-28T04:09:43.270077+00:00", "source": "github"}, "license_family": {"inputs": ["license"], "kind": "computed", "method": "license_family"}, "maturity": {"confidence": null, "enriched_at": "2026-08-29T17:44:55.298442+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "3b8bf53e03db7d030e791c2e362b76ad963144d7510fe47d609d6d7f8574e0ea", "fetched_at": "2026-08-28T04:09:43.270077+00:00", "kind": "readme", "missing": false, "url": "https://github.com/bfirsh/jsnes"}, {"content_hash": "f4909a444992f9de6229a35315e0085a1e8fcee94156f394533f8f35546827f2", "fetched_at": "2026-08-29T08:42:00.383899+00:00", "kind": "homepage", "missing": false, "url": "https://jsnes.org"}, {"content_hash": "22b535618515c9131c2040dd67dc1ebff42f51c812215b645a8c99d3f44ceee3", "fetched_at": "2026-08-29T08:42:00.393757+00:00", "kind": "registry_npm", "missing": false, "url": "https://registry.npmjs.org/jsnes"}], "taxonomy_version": 1}, "member_repos": {"kind": "observed", "observed_at": "2026-08-28T04:09:43.270077+00:00", "source": "github"}, "name": {"kind": "observed", "observed_at": "2026-08-28T04:09:43.270077+00:00", "source": "github"}, "platform": {"confidence": null, "enriched_at": "2026-08-29T17:44:55.298442+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "3b8bf53e03db7d030e791c2e362b76ad963144d7510fe47d609d6d7f8574e0ea", "fetched_at": "2026-08-28T04:09:43.270077+00:00", "kind": "readme", "missing": false, "url": "https://github.com/bfirsh/jsnes"}, {"content_hash": "f4909a444992f9de6229a35315e0085a1e8fcee94156f394533f8f35546827f2", "fetched_at": "2026-08-29T08:42:00.383899+00:00", "kind": "homepage", "missing": false, "url": "https://jsnes.org"}, {"content_hash": "22b535618515c9131c2040dd67dc1ebff42f51c812215b645a8c99d3f44ceee3", "fetched_at": "2026-08-29T08:42:00.393757+00:00", "kind": "registry_npm", "missing": false, "url": "https://registry.npmjs.org/jsnes"}], "taxonomy_version": 1}, "pushed_at": {"kind": "observed", "observed_at": "2026-08-28T04:09:43.270077+00:00", "source": "github"}, "repo": {"kind": "observed", "observed_at": "2026-08-28T04:09:43.270077+00:00", "source": "github"}, "stars": {"kind": "observed", "observed_at": "2026-08-28T04:09:43.270077+00:00", "source": "github"}, "tags": {"confidence": null, "enriched_at": "2026-08-29T17:44:55.298442+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "3b8bf53e03db7d030e791c2e362b76ad963144d7510fe47d609d6d7f8574e0ea", "fetched_at": "2026-08-28T04:09:43.270077+00:00", "kind": "readme", "missing": false, "url": "https://github.com/bfirsh/jsnes"}, {"content_hash": "f4909a444992f9de6229a35315e0085a1e8fcee94156f394533f8f35546827f2", "fetched_at": "2026-08-29T08:42:00.383899+00:00", "kind": "homepage", "missing": false, "url": "https://jsnes.org"}, {"content_hash": "22b535618515c9131c2040dd67dc1ebff42f51c812215b645a8c99d3f44ceee3", "fetched_at": "2026-08-29T08:42:00.393757+00:00", "kind": "registry_npm", "missing": false, "url": "https://registry.npmjs.org/jsnes"}], "taxonomy_version": 1}, "topics": {"kind": "observed", "observed_at": "2026-08-28T04:09:43.270077+00:00", "source": "github"}, "urls": {"kind": "observed", "observed_at": "2026-08-28T04:09:43.270077+00:00", "source": "github"}, "use_cases": {"confidence": null, "enriched_at": "2026-08-29T17:44:55.298442+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "3b8bf53e03db7d030e791c2e362b76ad963144d7510fe47d609d6d7f8574e0ea", "fetched_at": "2026-08-28T04:09:43.270077+00:00", "kind": "readme", "missing": false, "url": "https://github.com/bfirsh/jsnes"}, {"content_hash": "f4909a444992f9de6229a35315e0085a1e8fcee94156f394533f8f35546827f2", "fetched_at": "2026-08-29T08:42:00.383899+00:00", "kind": "homepage", "missing": false, "url": "https://jsnes.org"}, {"content_hash": "22b535618515c9131c2040dd67dc1ebff42f51c812215b645a8c99d3f44ceee3", "fetched_at": "2026-08-29T08:42:00.393757+00:00", "kind": "registry_npm", "missing": false, "url": "https://registry.npmjs.org/jsnes"}], "taxonomy_version": 1}, "what_it_is": {"confidence": null, "enriched_at": "2026-08-29T17:44:55.298442+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "3b8bf53e03db7d030e791c2e362b76ad963144d7510fe47d609d6d7f8574e0ea", "fetched_at": "2026-08-28T04:09:43.270077+00:00", "kind": "readme", "missing": false, "url": "https://github.com/bfirsh/jsnes"}, {"content_hash": "f4909a444992f9de6229a35315e0085a1e8fcee94156f394533f8f35546827f2", "fetched_at": "2026-08-29T08:42:00.383899+00:00", "kind": "homepage", "missing": false, "url": "https://jsnes.org"}, {"content_hash": "22b535618515c9131c2040dd67dc1ebff42f51c812215b645a8c99d3f44ceee3", "fetched_at": "2026-08-29T08:42:00.393757+00:00", "kind": "registry_npm", "missing": false, "url": "https://registry.npmjs.org/jsnes"}], "taxonomy_version": 1}, "when_to_avoid": {"confidence": null, "enriched_at": "2026-08-29T17:44:55.298442+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "3b8bf53e03db7d030e791c2e362b76ad963144d7510fe47d609d6d7f8574e0ea", "fetched_at": "2026-08-28T04:09:43.270077+00:00", "kind": "readme", "missing": false, "url": "https://github.com/bfirsh/jsnes"}, {"content_hash": "f4909a444992f9de6229a35315e0085a1e8fcee94156f394533f8f35546827f2", "fetched_at": "2026-08-29T08:42:00.383899+00:00", "kind": "homepage", "missing": false, "url": "https://jsnes.org"}, {"content_hash": "22b535618515c9131c2040dd67dc1ebff42f51c812215b645a8c99d3f44ceee3", "fetched_at": "2026-08-29T08:42:00.393757+00:00", "kind": "registry_npm", "missing": false, "url": "https://registry.npmjs.org/jsnes"}], "taxonomy_version": 1}, "when_to_choose": {"confidence": null, "enriched_at": "2026-08-29T17:44:55.298442+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "3b8bf53e03db7d030e791c2e362b76ad963144d7510fe47d609d6d7f8574e0ea", "fetched_at": "2026-08-28T04:09:43.270077+00:00", "kind": "readme", "missing": false, "url": "https://github.com/bfirsh/jsnes"}, {"content_hash": "f4909a444992f9de6229a35315e0085a1e8fcee94156f394533f8f35546827f2", "fetched_at": "2026-08-29T08:42:00.383899+00:00", "kind": "homepage", "missing": false, "url": "https://jsnes.org"}, {"content_hash": "22b535618515c9131c2040dd67dc1ebff42f51c812215b645a8c99d3f44ceee3", "fetched_at": "2026-08-29T08:42:00.393757+00:00", "kind": "registry_npm", "missing": false, "url": "https://registry.npmjs.org/jsnes"}], "taxonomy_version": 1}}, "score": {"components": {"activity": 99, "longevity": 100, "rhythm": 66}, "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": 6273, "days_push": 8, "days_rel": 144, "gap_med": 41, "n_releases_24m": 2}, "score": 88, "version": 2}, "staleness": {"enrichment_outdated": false, "low_confidence": false, "scrape_days": 9, "stale_scrape": false}}