{"adoption": {"forks": 212, "observed_at": "2026-08-28T04:06:06.479707+00:00", "stars": 2022}, "canonical_url": "https://ross.abutalabs.com/products/graaljs", "card": {"archived": false, "artifact_type": "library", "description": "GraalJS – A high-performance, ECMAScript compliant, and embeddable JavaScript runtime for Java", "domain": ["programming-languages", "developer-tools", "web-development", "cross-platform"], "enriched": true, "function": ["interpreter", "programming-language", "sdk", "developer-tools"], "health_score": 100, "homepage": "https://www.graalvm.org/javascript/", "language": "C++", "license": "UPL-1.0", "license_family": "other", "maturity": "active", "member_repos": ["oracle/graaljs"], "name": "oracle/graaljs", "platform": ["jvm", "cross-platform"], "pushed_at": "2026-08-26T16:55:31+00:00", "repo": "oracle/graaljs", "stars": 2022, "tags": ["javascript-engine", "graalvm", "ecmascript", "polyglot", "nashorn-migration", "rhino-migration", "embeddable", "nodejs"], "topics": ["graalvm", "javascript", "nodejs", "java"], "urls": [], "use_cases": ["embed a javascript engine in a java application", "run node.js apps on the jvm", "migrate from nashorn or rhino to a modern ecmascript engine", "server-side rendering of react on the jvm", "script java applications with javascript", "run webassembly modules from javascript", "evaluate javascript in tools like intellij http client"], "what_it_is": "GraalJS is a high-performance, ECMAScript-compliant JavaScript engine implemented in Java on top of GraalVM. It can execute JavaScript and Node.js applications and be embedded in Java applications via Maven artifacts, offering Java interoperability and WebAssembly support.", "when_to_avoid": ["you need a standalone JavaScript runtime outside the JVM ecosystem", "you require all GraalVM optimizations while running on a stock OpenJDK", "your project depends on Nashorn/Rhino-specific non-standard behaviors"], "when_to_choose": ["you need a fast, spec-compliant javascript runtime on the JVM", "you want to embed JavaScript scripting in a Java host application", "you are migrating legacy Nashorn or Rhino code to modern ECMAScript", "you need Java/JavaScript interoperability via GraalVM polyglot APIs"]}, "data_as_of": "2026-08-30T08:39:29.467469+00:00", "members": [{"path": "/products/graaljs", "repo": "oracle/graaljs", "role": "main", "score": 95}], "provenance": {"archived": {"kind": "observed", "observed_at": "2026-08-28T04:06:06.479707+00:00", "source": "github"}, "artifact_type": {"confidence": null, "enriched_at": "2026-08-30T03:00:06.889711+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "dd61f4832d84cd8ea84bf42c23988a64a08b69fff8ffd7ada6787a1a632e1e4e", "fetched_at": "2026-08-28T04:06:06.479707+00:00", "kind": "readme", "missing": false, "url": "https://github.com/oracle/graaljs"}, {"content_hash": "bcb672b31c2644b4679b7f96ac887c69c09f4f4df1621aa975de6e74fde69d1b", "fetched_at": "2026-08-29T10:40:04.958323+00:00", "kind": "homepage", "missing": false, "url": "https://www.graalvm.org/javascript/"}, {"content_hash": "11d023998689012dec29530b5ca41352c6e76ab910e9a99ddc5e5275bd2f9f1a", "fetched_at": "2026-08-29T10:40:04.967936+00:00", "kind": "site_page", "missing": false, "url": "https://www.graalvm.org/javascript/docs"}], "taxonomy_version": 1}, "description": {"kind": "observed", "observed_at": "2026-08-28T04:06:06.479707+00:00", "source": "github"}, "domain": {"confidence": null, "enriched_at": "2026-08-30T03:00:06.889711+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "dd61f4832d84cd8ea84bf42c23988a64a08b69fff8ffd7ada6787a1a632e1e4e", "fetched_at": "2026-08-28T04:06:06.479707+00:00", "kind": "readme", "missing": false, "url": "https://github.com/oracle/graaljs"}, {"content_hash": "bcb672b31c2644b4679b7f96ac887c69c09f4f4df1621aa975de6e74fde69d1b", "fetched_at": "2026-08-29T10:40:04.958323+00:00", "kind": "homepage", "missing": false, "url": "https://www.graalvm.org/javascript/"}, {"content_hash": "11d023998689012dec29530b5ca41352c6e76ab910e9a99ddc5e5275bd2f9f1a", "fetched_at": "2026-08-29T10:40:04.967936+00:00", "kind": "site_page", "missing": false, "url": "https://www.graalvm.org/javascript/docs"}], "taxonomy_version": 1}, "enriched": {"inputs": [], "kind": "computed", "method": "enrichment_status"}, "function": {"confidence": null, "enriched_at": "2026-08-30T03:00:06.889711+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "dd61f4832d84cd8ea84bf42c23988a64a08b69fff8ffd7ada6787a1a632e1e4e", "fetched_at": "2026-08-28T04:06:06.479707+00:00", "kind": "readme", "missing": false, "url": "https://github.com/oracle/graaljs"}, {"content_hash": "bcb672b31c2644b4679b7f96ac887c69c09f4f4df1621aa975de6e74fde69d1b", "fetched_at": "2026-08-29T10:40:04.958323+00:00", "kind": "homepage", "missing": false, "url": "https://www.graalvm.org/javascript/"}, {"content_hash": "11d023998689012dec29530b5ca41352c6e76ab910e9a99ddc5e5275bd2f9f1a", "fetched_at": "2026-08-29T10:40:04.967936+00:00", "kind": "site_page", "missing": false, "url": "https://www.graalvm.org/javascript/docs"}], "taxonomy_version": 1}, "health_score": {"inputs": ["days_since_push", "days_since_release", "archived"], "kind": "computed", "method": "health_v1"}, "homepage": {"kind": "observed", "observed_at": "2026-08-28T04:06:06.479707+00:00", "source": "github"}, "language": {"kind": "observed", "observed_at": "2026-08-28T04:06:06.479707+00:00", "source": "github"}, "license": {"kind": "observed", "observed_at": "2026-08-28T04:06:06.479707+00:00", "source": "github"}, "license_family": {"inputs": ["license"], "kind": "computed", "method": "license_family"}, "maturity": {"confidence": null, "enriched_at": "2026-08-30T03:00:06.889711+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "dd61f4832d84cd8ea84bf42c23988a64a08b69fff8ffd7ada6787a1a632e1e4e", "fetched_at": "2026-08-28T04:06:06.479707+00:00", "kind": "readme", "missing": false, "url": "https://github.com/oracle/graaljs"}, {"content_hash": "bcb672b31c2644b4679b7f96ac887c69c09f4f4df1621aa975de6e74fde69d1b", "fetched_at": "2026-08-29T10:40:04.958323+00:00", "kind": "homepage", "missing": false, "url": "https://www.graalvm.org/javascript/"}, {"content_hash": "11d023998689012dec29530b5ca41352c6e76ab910e9a99ddc5e5275bd2f9f1a", "fetched_at": "2026-08-29T10:40:04.967936+00:00", "kind": "site_page", "missing": false, "url": "https://www.graalvm.org/javascript/docs"}], "taxonomy_version": 1}, "member_repos": {"kind": "observed", "observed_at": "2026-08-28T04:06:06.479707+00:00", "source": "github"}, "name": {"kind": "observed", "observed_at": "2026-08-28T04:06:06.479707+00:00", "source": "github"}, "platform": {"confidence": null, "enriched_at": "2026-08-30T03:00:06.889711+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "dd61f4832d84cd8ea84bf42c23988a64a08b69fff8ffd7ada6787a1a632e1e4e", "fetched_at": "2026-08-28T04:06:06.479707+00:00", "kind": "readme", "missing": false, "url": "https://github.com/oracle/graaljs"}, {"content_hash": "bcb672b31c2644b4679b7f96ac887c69c09f4f4df1621aa975de6e74fde69d1b", "fetched_at": "2026-08-29T10:40:04.958323+00:00", "kind": "homepage", "missing": false, "url": "https://www.graalvm.org/javascript/"}, {"content_hash": "11d023998689012dec29530b5ca41352c6e76ab910e9a99ddc5e5275bd2f9f1a", "fetched_at": "2026-08-29T10:40:04.967936+00:00", "kind": "site_page", "missing": false, "url": "https://www.graalvm.org/javascript/docs"}], "taxonomy_version": 1}, "pushed_at": {"kind": "observed", "observed_at": "2026-08-28T04:06:06.479707+00:00", "source": "github"}, "repo": {"kind": "observed", "observed_at": "2026-08-28T04:06:06.479707+00:00", "source": "github"}, "stars": {"kind": "observed", "observed_at": "2026-08-28T04:06:06.479707+00:00", "source": "github"}, "tags": {"confidence": null, "enriched_at": "2026-08-30T03:00:06.889711+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "dd61f4832d84cd8ea84bf42c23988a64a08b69fff8ffd7ada6787a1a632e1e4e", "fetched_at": "2026-08-28T04:06:06.479707+00:00", "kind": "readme", "missing": false, "url": "https://github.com/oracle/graaljs"}, {"content_hash": "bcb672b31c2644b4679b7f96ac887c69c09f4f4df1621aa975de6e74fde69d1b", "fetched_at": "2026-08-29T10:40:04.958323+00:00", "kind": "homepage", "missing": false, "url": "https://www.graalvm.org/javascript/"}, {"content_hash": "11d023998689012dec29530b5ca41352c6e76ab910e9a99ddc5e5275bd2f9f1a", "fetched_at": "2026-08-29T10:40:04.967936+00:00", "kind": "site_page", "missing": false, "url": "https://www.graalvm.org/javascript/docs"}], "taxonomy_version": 1}, "topics": {"kind": "observed", "observed_at": "2026-08-28T04:06:06.479707+00:00", "source": "github"}, "urls": {"kind": "observed", "observed_at": "2026-08-28T04:06:06.479707+00:00", "source": "github"}, "use_cases": {"confidence": null, "enriched_at": "2026-08-30T03:00:06.889711+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "dd61f4832d84cd8ea84bf42c23988a64a08b69fff8ffd7ada6787a1a632e1e4e", "fetched_at": "2026-08-28T04:06:06.479707+00:00", "kind": "readme", "missing": false, "url": "https://github.com/oracle/graaljs"}, {"content_hash": "bcb672b31c2644b4679b7f96ac887c69c09f4f4df1621aa975de6e74fde69d1b", "fetched_at": "2026-08-29T10:40:04.958323+00:00", "kind": "homepage", "missing": false, "url": "https://www.graalvm.org/javascript/"}, {"content_hash": "11d023998689012dec29530b5ca41352c6e76ab910e9a99ddc5e5275bd2f9f1a", "fetched_at": "2026-08-29T10:40:04.967936+00:00", "kind": "site_page", "missing": false, "url": "https://www.graalvm.org/javascript/docs"}], "taxonomy_version": 1}, "what_it_is": {"confidence": null, "enriched_at": "2026-08-30T03:00:06.889711+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "dd61f4832d84cd8ea84bf42c23988a64a08b69fff8ffd7ada6787a1a632e1e4e", "fetched_at": "2026-08-28T04:06:06.479707+00:00", "kind": "readme", "missing": false, "url": "https://github.com/oracle/graaljs"}, {"content_hash": "bcb672b31c2644b4679b7f96ac887c69c09f4f4df1621aa975de6e74fde69d1b", "fetched_at": "2026-08-29T10:40:04.958323+00:00", "kind": "homepage", "missing": false, "url": "https://www.graalvm.org/javascript/"}, {"content_hash": "11d023998689012dec29530b5ca41352c6e76ab910e9a99ddc5e5275bd2f9f1a", "fetched_at": "2026-08-29T10:40:04.967936+00:00", "kind": "site_page", "missing": false, "url": "https://www.graalvm.org/javascript/docs"}], "taxonomy_version": 1}, "when_to_avoid": {"confidence": null, "enriched_at": "2026-08-30T03:00:06.889711+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "dd61f4832d84cd8ea84bf42c23988a64a08b69fff8ffd7ada6787a1a632e1e4e", "fetched_at": "2026-08-28T04:06:06.479707+00:00", "kind": "readme", "missing": false, "url": "https://github.com/oracle/graaljs"}, {"content_hash": "bcb672b31c2644b4679b7f96ac887c69c09f4f4df1621aa975de6e74fde69d1b", "fetched_at": "2026-08-29T10:40:04.958323+00:00", "kind": "homepage", "missing": false, "url": "https://www.graalvm.org/javascript/"}, {"content_hash": "11d023998689012dec29530b5ca41352c6e76ab910e9a99ddc5e5275bd2f9f1a", "fetched_at": "2026-08-29T10:40:04.967936+00:00", "kind": "site_page", "missing": false, "url": "https://www.graalvm.org/javascript/docs"}], "taxonomy_version": 1}, "when_to_choose": {"confidence": null, "enriched_at": "2026-08-30T03:00:06.889711+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "dd61f4832d84cd8ea84bf42c23988a64a08b69fff8ffd7ada6787a1a632e1e4e", "fetched_at": "2026-08-28T04:06:06.479707+00:00", "kind": "readme", "missing": false, "url": "https://github.com/oracle/graaljs"}, {"content_hash": "bcb672b31c2644b4679b7f96ac887c69c09f4f4df1621aa975de6e74fde69d1b", "fetched_at": "2026-08-29T10:40:04.958323+00:00", "kind": "homepage", "missing": false, "url": "https://www.graalvm.org/javascript/"}, {"content_hash": "11d023998689012dec29530b5ca41352c6e76ab910e9a99ddc5e5275bd2f9f1a", "fetched_at": "2026-08-29T10:40:04.967936+00:00", "kind": "site_page", "missing": false, "url": "https://www.graalvm.org/javascript/docs"}], "taxonomy_version": 1}}, "score": {"components": {"activity": 99, "longevity": 100, "rhythm": 87}, "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": 3060, "days_push": 7, "days_rel": 8, "gap_med": 47.0, "n_releases_24m": 13}, "score": 95, "version": 2}, "staleness": {"enrichment_outdated": false, "low_confidence": false, "scrape_days": 9, "stale_scrape": false}}