{"adoption": {"forks": 113, "observed_at": "2026-08-28T04:04:26.295074+00:00", "stars": 1342}, "canonical_url": "https://ross.abutalabs.com/products/observe-js", "card": {"archived": true, "artifact_type": "library", "description": "A library for observing Arrays, Objects and PathValues", "domain": ["web-development", "frontend"], "enriched": true, "function": ["state-management", "developer-tools"], "health_score": 10, "homepage": null, "language": "JavaScript", "license": null, "license_family": "other", "maturity": "abandoned", "member_repos": ["googlearchive/observe-js"], "name": "googlearchive/observe-js", "platform": ["browser"], "pushed_at": "2015-11-12T23:10:07+00:00", "repo": "googlearchive/observe-js", "stars": 1342, "tags": ["data-binding", "object-observe", "dirty-checking", "polymer", "archived", "javascript", "nodejs"], "topics": [], "urls": [], "use_cases": ["watch for changes to javascript object properties", "observe array mutations and get minimal splices", "react to changes at a nested object path", "build data binding for a web framework", "detect changes in javascript data structures"], "what_it_is": "observe-js is a JavaScript library for observing changes to Arrays, Objects, and PathValues, exposing observers like PathObserver, ArrayObserver, ObjectObserver, and CompoundObserver. It uses the native Object.observe API when available and falls back to dirty-checking otherwise.", "when_to_avoid": ["starting any new project - it is archived and Object.observe was removed from browsers", "modern reactive UIs - use Proxies, RxJS, or framework reactivity instead"], "when_to_choose": ["maintaining legacy Polymer-era code that already depends on it", "targeting very old environments where you need Object.observe-style observation with a dirty-checking fallback"]}, "data_as_of": "2026-08-30T08:39:29.467469+00:00", "members": [{"path": "/products/observe-js", "repo": "googlearchive/observe-js", "role": "main", "score": 10}], "provenance": {"archived": {"kind": "observed", "observed_at": "2026-08-28T04:04:26.295074+00:00", "source": "github"}, "artifact_type": {"confidence": null, "enriched_at": "2026-08-30T04:43:05.531619+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "e3a537a00d5caa9f35213e8dcdbbabe539a42292f02f12b089006e9f99242ef1", "fetched_at": "2026-08-28T04:04:26.295074+00:00", "kind": "readme", "missing": false, "url": "https://github.com/googlearchive/observe-js"}], "taxonomy_version": 1}, "description": {"kind": "observed", "observed_at": "2026-08-28T04:04:26.295074+00:00", "source": "github"}, "domain": {"confidence": null, "enriched_at": "2026-08-30T04:43:05.531619+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "e3a537a00d5caa9f35213e8dcdbbabe539a42292f02f12b089006e9f99242ef1", "fetched_at": "2026-08-28T04:04:26.295074+00:00", "kind": "readme", "missing": false, "url": "https://github.com/googlearchive/observe-js"}], "taxonomy_version": 1}, "enriched": {"inputs": [], "kind": "computed", "method": "enrichment_status"}, "function": {"confidence": null, "enriched_at": "2026-08-30T04:43:05.531619+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "e3a537a00d5caa9f35213e8dcdbbabe539a42292f02f12b089006e9f99242ef1", "fetched_at": "2026-08-28T04:04:26.295074+00:00", "kind": "readme", "missing": false, "url": "https://github.com/googlearchive/observe-js"}], "taxonomy_version": 1}, "health_score": {"inputs": ["days_since_push", "days_since_release", "archived"], "kind": "computed", "method": "health_v1"}, "homepage": {"kind": "observed", "observed_at": "2026-08-28T04:04:26.295074+00:00", "source": "github"}, "language": {"kind": "observed", "observed_at": "2026-08-28T04:04:26.295074+00:00", "source": "github"}, "license": {"kind": "observed", "observed_at": "2026-08-28T04:04:26.295074+00:00", "source": "github"}, "license_family": {"inputs": ["license"], "kind": "computed", "method": "license_family"}, "maturity": {"confidence": null, "enriched_at": "2026-08-30T04:43:05.531619+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "e3a537a00d5caa9f35213e8dcdbbabe539a42292f02f12b089006e9f99242ef1", "fetched_at": "2026-08-28T04:04:26.295074+00:00", "kind": "readme", "missing": false, "url": "https://github.com/googlearchive/observe-js"}], "taxonomy_version": 1}, "member_repos": {"kind": "observed", "observed_at": "2026-08-28T04:04:26.295074+00:00", "source": "github"}, "name": {"kind": "observed", "observed_at": "2026-08-28T04:04:26.295074+00:00", "source": "github"}, "platform": {"confidence": null, "enriched_at": "2026-08-30T04:43:05.531619+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "e3a537a00d5caa9f35213e8dcdbbabe539a42292f02f12b089006e9f99242ef1", "fetched_at": "2026-08-28T04:04:26.295074+00:00", "kind": "readme", "missing": false, "url": "https://github.com/googlearchive/observe-js"}], "taxonomy_version": 1}, "pushed_at": {"kind": "observed", "observed_at": "2026-08-28T04:04:26.295074+00:00", "source": "github"}, "repo": {"kind": "observed", "observed_at": "2026-08-28T04:04:26.295074+00:00", "source": "github"}, "stars": {"kind": "observed", "observed_at": "2026-08-28T04:04:26.295074+00:00", "source": "github"}, "tags": {"confidence": null, "enriched_at": "2026-08-30T04:43:05.531619+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "e3a537a00d5caa9f35213e8dcdbbabe539a42292f02f12b089006e9f99242ef1", "fetched_at": "2026-08-28T04:04:26.295074+00:00", "kind": "readme", "missing": false, "url": "https://github.com/googlearchive/observe-js"}], "taxonomy_version": 1}, "topics": {"kind": "observed", "observed_at": "2026-08-28T04:04:26.295074+00:00", "source": "github"}, "urls": {"kind": "observed", "observed_at": "2026-08-28T04:04:26.295074+00:00", "source": "github"}, "use_cases": {"confidence": null, "enriched_at": "2026-08-30T04:43:05.531619+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "e3a537a00d5caa9f35213e8dcdbbabe539a42292f02f12b089006e9f99242ef1", "fetched_at": "2026-08-28T04:04:26.295074+00:00", "kind": "readme", "missing": false, "url": "https://github.com/googlearchive/observe-js"}], "taxonomy_version": 1}, "what_it_is": {"confidence": null, "enriched_at": "2026-08-30T04:43:05.531619+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "e3a537a00d5caa9f35213e8dcdbbabe539a42292f02f12b089006e9f99242ef1", "fetched_at": "2026-08-28T04:04:26.295074+00:00", "kind": "readme", "missing": false, "url": "https://github.com/googlearchive/observe-js"}], "taxonomy_version": 1}, "when_to_avoid": {"confidence": null, "enriched_at": "2026-08-30T04:43:05.531619+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "e3a537a00d5caa9f35213e8dcdbbabe539a42292f02f12b089006e9f99242ef1", "fetched_at": "2026-08-28T04:04:26.295074+00:00", "kind": "readme", "missing": false, "url": "https://github.com/googlearchive/observe-js"}], "taxonomy_version": 1}, "when_to_choose": {"confidence": null, "enriched_at": "2026-08-30T04:43:05.531619+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "e3a537a00d5caa9f35213e8dcdbbabe539a42292f02f12b089006e9f99242ef1", "fetched_at": "2026-08-28T04:04:26.295074+00:00", "kind": "readme", "missing": false, "url": "https://github.com/googlearchive/observe-js"}], "taxonomy_version": 1}}, "score": {"components": {"activity": 0, "longevity": 100, "rhythm": 8}, "computed_at": "2026-09-03T02:20:16.233290+00:00", "flags": ["archived", "no_license"], "formula": "round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)", "inputs": {"age_days": 5136, "days_push": 3947, "days_rel": null, "gap_med": null, "n_releases_24m": 0}, "score": 10, "version": 2}, "staleness": {"enrichment_outdated": false, "low_confidence": false, "scrape_days": 9, "stale_scrape": false}}