{"adoption": {"forks": 366, "observed_at": "2026-08-28T04:09:17.946852+00:00", "stars": 5424}, "canonical_url": "https://ross.abutalabs.com/products/estree", "card": {"archived": false, "artifact_type": "learning-resource", "description": "The ESTree Spec", "domain": ["parsers", "programming-languages", "developer-tools"], "enriched": true, "function": ["parser", "documentation"], "health_score": 68, "homepage": null, "language": null, "license": "NOASSERTION", "license_family": "other", "maturity": "active", "member_repos": ["estree/estree"], "name": "estree/estree", "platform": ["cross-platform"], "pushed_at": "2026-05-01T13:47:12+00:00", "repo": "estree/estree", "stars": 5424, "tags": ["estree", "ast", "specification", "javascript-ast", "standard", "javascript"], "topics": ["estree", "javascript", "ast", "parsing", "specification"], "urls": [], "use_cases": ["understand the AST node format produced by JavaScript parsers", "build a tool that manipulates JavaScript source code via ASTs", "check how a new JavaScript syntax feature should be represented as AST nodes", "implement a JavaScript parser compatible with the ESTree format", "write codemods or linters that traverse JavaScript syntax trees"], "what_it_is": "The ESTree Spec is a community-maintained specification for the JavaScript AST (Abstract Syntax Tree) format originally produced by SpiderMonkey's parser API. It serves as the lingua franca standard that JavaScript parsing and code-manipulation tools like ESLint, Babel, and Acorn align to.", "when_to_avoid": ["you need an actual parser implementation rather than a specification document", "you need AST specs for languages other than JavaScript"], "when_to_choose": ["you are building or using JavaScript parsing, linting, transpiling, or code-generation tools and need the canonical AST node definitions", "you want to propose or track how new ECMAScript syntax maps to AST structures"]}, "data_as_of": "2026-08-30T08:39:29.467469+00:00", "members": [{"path": "/products/estree", "repo": "estree/estree", "role": "main", "score": 68}], "provenance": {"archived": {"kind": "observed", "observed_at": "2026-08-28T04:09:17.946852+00:00", "source": "github"}, "artifact_type": {"confidence": null, "enriched_at": "2026-08-29T17:56:55.641566+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "2455aefeba0b15de525bf6028a8b76e32f8d5370e8a71a85905369154f67a251", "fetched_at": "2026-08-28T04:09:17.946852+00:00", "kind": "readme", "missing": false, "url": "https://github.com/estree/estree"}], "taxonomy_version": 1}, "description": {"kind": "observed", "observed_at": "2026-08-28T04:09:17.946852+00:00", "source": "github"}, "domain": {"confidence": null, "enriched_at": "2026-08-29T17:56:55.641566+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "2455aefeba0b15de525bf6028a8b76e32f8d5370e8a71a85905369154f67a251", "fetched_at": "2026-08-28T04:09:17.946852+00:00", "kind": "readme", "missing": false, "url": "https://github.com/estree/estree"}], "taxonomy_version": 1}, "enriched": {"inputs": [], "kind": "computed", "method": "enrichment_status"}, "function": {"confidence": null, "enriched_at": "2026-08-29T17:56:55.641566+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "2455aefeba0b15de525bf6028a8b76e32f8d5370e8a71a85905369154f67a251", "fetched_at": "2026-08-28T04:09:17.946852+00:00", "kind": "readme", "missing": false, "url": "https://github.com/estree/estree"}], "taxonomy_version": 1}, "health_score": {"inputs": ["days_since_push", "days_since_release", "archived"], "kind": "computed", "method": "health_v1"}, "homepage": {"kind": "observed", "observed_at": "2026-08-28T04:09:17.946852+00:00", "source": "github"}, "language": {"kind": "observed", "observed_at": "2026-08-28T04:09:17.946852+00:00", "source": "github"}, "license": {"kind": "observed", "observed_at": "2026-08-28T04:09:17.946852+00:00", "source": "github"}, "license_family": {"inputs": ["license"], "kind": "computed", "method": "license_family"}, "maturity": {"confidence": null, "enriched_at": "2026-08-29T17:56:55.641566+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "2455aefeba0b15de525bf6028a8b76e32f8d5370e8a71a85905369154f67a251", "fetched_at": "2026-08-28T04:09:17.946852+00:00", "kind": "readme", "missing": false, "url": "https://github.com/estree/estree"}], "taxonomy_version": 1}, "member_repos": {"kind": "observed", "observed_at": "2026-08-28T04:09:17.946852+00:00", "source": "github"}, "name": {"kind": "observed", "observed_at": "2026-08-28T04:09:17.946852+00:00", "source": "github"}, "platform": {"confidence": null, "enriched_at": "2026-08-29T17:56:55.641566+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "2455aefeba0b15de525bf6028a8b76e32f8d5370e8a71a85905369154f67a251", "fetched_at": "2026-08-28T04:09:17.946852+00:00", "kind": "readme", "missing": false, "url": "https://github.com/estree/estree"}], "taxonomy_version": 1}, "pushed_at": {"kind": "observed", "observed_at": "2026-08-28T04:09:17.946852+00:00", "source": "github"}, "repo": {"kind": "observed", "observed_at": "2026-08-28T04:09:17.946852+00:00", "source": "github"}, "stars": {"kind": "observed", "observed_at": "2026-08-28T04:09:17.946852+00:00", "source": "github"}, "tags": {"confidence": null, "enriched_at": "2026-08-29T17:56:55.641566+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "2455aefeba0b15de525bf6028a8b76e32f8d5370e8a71a85905369154f67a251", "fetched_at": "2026-08-28T04:09:17.946852+00:00", "kind": "readme", "missing": false, "url": "https://github.com/estree/estree"}], "taxonomy_version": 1}, "topics": {"kind": "observed", "observed_at": "2026-08-28T04:09:17.946852+00:00", "source": "github"}, "urls": {"kind": "observed", "observed_at": "2026-08-28T04:09:17.946852+00:00", "source": "github"}, "use_cases": {"confidence": null, "enriched_at": "2026-08-29T17:56:55.641566+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "2455aefeba0b15de525bf6028a8b76e32f8d5370e8a71a85905369154f67a251", "fetched_at": "2026-08-28T04:09:17.946852+00:00", "kind": "readme", "missing": false, "url": "https://github.com/estree/estree"}], "taxonomy_version": 1}, "what_it_is": {"confidence": null, "enriched_at": "2026-08-29T17:56:55.641566+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "2455aefeba0b15de525bf6028a8b76e32f8d5370e8a71a85905369154f67a251", "fetched_at": "2026-08-28T04:09:17.946852+00:00", "kind": "readme", "missing": false, "url": "https://github.com/estree/estree"}], "taxonomy_version": 1}, "when_to_avoid": {"confidence": null, "enriched_at": "2026-08-29T17:56:55.641566+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "2455aefeba0b15de525bf6028a8b76e32f8d5370e8a71a85905369154f67a251", "fetched_at": "2026-08-28T04:09:17.946852+00:00", "kind": "readme", "missing": false, "url": "https://github.com/estree/estree"}], "taxonomy_version": 1}, "when_to_choose": {"confidence": null, "enriched_at": "2026-08-29T17:56:55.641566+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "2455aefeba0b15de525bf6028a8b76e32f8d5370e8a71a85905369154f67a251", "fetched_at": "2026-08-28T04:09:17.946852+00:00", "kind": "readme", "missing": false, "url": "https://github.com/estree/estree"}], "taxonomy_version": 1}}, "score": {"components": {"activity": 80, "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": 4221, "days_push": 124, "days_rel": null, "gap_med": null, "n_releases_24m": 0}, "score": 68, "version": 2}, "staleness": {"enrichment_outdated": false, "low_confidence": false, "scrape_days": 9, "stale_scrape": false}}