{"adoption": {"forks": 238, "observed_at": "2026-08-28T04:07:41.510103+00:00", "stars": 3069}, "canonical_url": "https://ross.abutalabs.com/products/webextension-polyfill", "card": {"archived": true, "artifact_type": "library", "description": "A lightweight polyfill library for Promise-based WebExtension APIs in Chrome", "domain": ["browser-extensions", "web-development", "developer-tools"], "enriched": true, "function": ["sdk", "developer-tools"], "health_score": 10, "homepage": null, "language": "JavaScript", "license": "MPL-2.0", "license_family": "copyleft", "maturity": "abandoned", "member_repos": ["mozilla/webextension-polyfill"], "name": "mozilla/webextension-polyfill", "platform": ["browser", "browser-extension"], "pushed_at": "2026-07-30T12:16:33+00:00", "repo": "mozilla/webextension-polyfill", "stars": 3069, "tags": ["webextension", "polyfill", "promise-based-api", "browser-api", "chrome-extension", "cross-browser", "javascript"], "topics": [], "urls": [], "use_cases": ["write chrome extensions using promise-based browser APIs", "make a webextension codebase work across chrome and firefox", "avoid callback-style chrome.* APIs in extension code", "use the same extension API namespace in chrome, edge, and opera", "write cross-browser extensions with typescript support"], "what_it_is": "A lightweight polyfill that lets browser extensions use the Promise-based `browser` API namespace in Chrome, matching Firefox's WebExtension API style. It is now a no-op on browsers with native support and the project has been retired since Chrome adopted the `browser` namespace.", "when_to_avoid": ["starting a new extension targeting modern Chrome (148+) or Firefox, which support the browser namespace natively", "needing a maintained library - the project explicitly will not receive further updates", "building extensions only for Firefox or Safari, where the polyfill is a no-op"], "when_to_choose": ["maintaining an older extension that still targets Chrome versions before 148", "supporting legacy Chrome-based browsers (Edge <79, old Opera) that lack the browser namespace"]}, "data_as_of": "2026-08-30T08:39:29.467469+00:00", "members": [{"path": "/products/webextension-polyfill", "repo": "mozilla/webextension-polyfill", "role": "main", "score": 10}], "provenance": {"archived": {"kind": "observed", "observed_at": "2026-08-28T04:07:41.510103+00:00", "source": "github"}, "artifact_type": {"confidence": null, "enriched_at": "2026-08-29T18:46:37.999412+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "8696e6b95f45d300ba078590e7f1d479703acee5a273f9eb9213d87f4b4a9dd2", "fetched_at": "2026-08-28T04:07:41.510103+00:00", "kind": "readme", "missing": false, "url": "https://github.com/mozilla/webextension-polyfill"}, {"content_hash": "ac53393dd74e164b69de17f6180f186d5689a1dcbc088a7a9322fe4eeb17ee53", "fetched_at": "2026-08-29T09:43:35.392931+00:00", "kind": "registry_npm", "missing": false, "url": "https://registry.npmjs.org/webextension-polyfill"}], "taxonomy_version": 1}, "description": {"kind": "observed", "observed_at": "2026-08-28T04:07:41.510103+00:00", "source": "github"}, "domain": {"confidence": null, "enriched_at": "2026-08-29T18:46:37.999412+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "8696e6b95f45d300ba078590e7f1d479703acee5a273f9eb9213d87f4b4a9dd2", "fetched_at": "2026-08-28T04:07:41.510103+00:00", "kind": "readme", "missing": false, "url": "https://github.com/mozilla/webextension-polyfill"}, {"content_hash": "ac53393dd74e164b69de17f6180f186d5689a1dcbc088a7a9322fe4eeb17ee53", "fetched_at": "2026-08-29T09:43:35.392931+00:00", "kind": "registry_npm", "missing": false, "url": "https://registry.npmjs.org/webextension-polyfill"}], "taxonomy_version": 1}, "enriched": {"inputs": [], "kind": "computed", "method": "enrichment_status"}, "function": {"confidence": null, "enriched_at": "2026-08-29T18:46:37.999412+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "8696e6b95f45d300ba078590e7f1d479703acee5a273f9eb9213d87f4b4a9dd2", "fetched_at": "2026-08-28T04:07:41.510103+00:00", "kind": "readme", "missing": false, "url": "https://github.com/mozilla/webextension-polyfill"}, {"content_hash": "ac53393dd74e164b69de17f6180f186d5689a1dcbc088a7a9322fe4eeb17ee53", "fetched_at": "2026-08-29T09:43:35.392931+00:00", "kind": "registry_npm", "missing": false, "url": "https://registry.npmjs.org/webextension-polyfill"}], "taxonomy_version": 1}, "health_score": {"inputs": ["days_since_push", "days_since_release", "archived"], "kind": "computed", "method": "health_v1"}, "homepage": {"kind": "observed", "observed_at": "2026-08-28T04:07:41.510103+00:00", "source": "github"}, "language": {"kind": "observed", "observed_at": "2026-08-28T04:07:41.510103+00:00", "source": "github"}, "license": {"kind": "observed", "observed_at": "2026-08-28T04:07:41.510103+00:00", "source": "github"}, "license_family": {"inputs": ["license"], "kind": "computed", "method": "license_family"}, "maturity": {"confidence": null, "enriched_at": "2026-08-29T18:46:37.999412+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "8696e6b95f45d300ba078590e7f1d479703acee5a273f9eb9213d87f4b4a9dd2", "fetched_at": "2026-08-28T04:07:41.510103+00:00", "kind": "readme", "missing": false, "url": "https://github.com/mozilla/webextension-polyfill"}, {"content_hash": "ac53393dd74e164b69de17f6180f186d5689a1dcbc088a7a9322fe4eeb17ee53", "fetched_at": "2026-08-29T09:43:35.392931+00:00", "kind": "registry_npm", "missing": false, "url": "https://registry.npmjs.org/webextension-polyfill"}], "taxonomy_version": 1}, "member_repos": {"kind": "observed", "observed_at": "2026-08-28T04:07:41.510103+00:00", "source": "github"}, "name": {"kind": "observed", "observed_at": "2026-08-28T04:07:41.510103+00:00", "source": "github"}, "platform": {"confidence": null, "enriched_at": "2026-08-29T18:46:37.999412+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "8696e6b95f45d300ba078590e7f1d479703acee5a273f9eb9213d87f4b4a9dd2", "fetched_at": "2026-08-28T04:07:41.510103+00:00", "kind": "readme", "missing": false, "url": "https://github.com/mozilla/webextension-polyfill"}, {"content_hash": "ac53393dd74e164b69de17f6180f186d5689a1dcbc088a7a9322fe4eeb17ee53", "fetched_at": "2026-08-29T09:43:35.392931+00:00", "kind": "registry_npm", "missing": false, "url": "https://registry.npmjs.org/webextension-polyfill"}], "taxonomy_version": 1}, "pushed_at": {"kind": "observed", "observed_at": "2026-08-28T04:07:41.510103+00:00", "source": "github"}, "repo": {"kind": "observed", "observed_at": "2026-08-28T04:07:41.510103+00:00", "source": "github"}, "stars": {"kind": "observed", "observed_at": "2026-08-28T04:07:41.510103+00:00", "source": "github"}, "tags": {"confidence": null, "enriched_at": "2026-08-29T18:46:37.999412+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "8696e6b95f45d300ba078590e7f1d479703acee5a273f9eb9213d87f4b4a9dd2", "fetched_at": "2026-08-28T04:07:41.510103+00:00", "kind": "readme", "missing": false, "url": "https://github.com/mozilla/webextension-polyfill"}, {"content_hash": "ac53393dd74e164b69de17f6180f186d5689a1dcbc088a7a9322fe4eeb17ee53", "fetched_at": "2026-08-29T09:43:35.392931+00:00", "kind": "registry_npm", "missing": false, "url": "https://registry.npmjs.org/webextension-polyfill"}], "taxonomy_version": 1}, "topics": {"kind": "observed", "observed_at": "2026-08-28T04:07:41.510103+00:00", "source": "github"}, "urls": {"kind": "observed", "observed_at": "2026-08-28T04:07:41.510103+00:00", "source": "github"}, "use_cases": {"confidence": null, "enriched_at": "2026-08-29T18:46:37.999412+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "8696e6b95f45d300ba078590e7f1d479703acee5a273f9eb9213d87f4b4a9dd2", "fetched_at": "2026-08-28T04:07:41.510103+00:00", "kind": "readme", "missing": false, "url": "https://github.com/mozilla/webextension-polyfill"}, {"content_hash": "ac53393dd74e164b69de17f6180f186d5689a1dcbc088a7a9322fe4eeb17ee53", "fetched_at": "2026-08-29T09:43:35.392931+00:00", "kind": "registry_npm", "missing": false, "url": "https://registry.npmjs.org/webextension-polyfill"}], "taxonomy_version": 1}, "what_it_is": {"confidence": null, "enriched_at": "2026-08-29T18:46:37.999412+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "8696e6b95f45d300ba078590e7f1d479703acee5a273f9eb9213d87f4b4a9dd2", "fetched_at": "2026-08-28T04:07:41.510103+00:00", "kind": "readme", "missing": false, "url": "https://github.com/mozilla/webextension-polyfill"}, {"content_hash": "ac53393dd74e164b69de17f6180f186d5689a1dcbc088a7a9322fe4eeb17ee53", "fetched_at": "2026-08-29T09:43:35.392931+00:00", "kind": "registry_npm", "missing": false, "url": "https://registry.npmjs.org/webextension-polyfill"}], "taxonomy_version": 1}, "when_to_avoid": {"confidence": null, "enriched_at": "2026-08-29T18:46:37.999412+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "8696e6b95f45d300ba078590e7f1d479703acee5a273f9eb9213d87f4b4a9dd2", "fetched_at": "2026-08-28T04:07:41.510103+00:00", "kind": "readme", "missing": false, "url": "https://github.com/mozilla/webextension-polyfill"}, {"content_hash": "ac53393dd74e164b69de17f6180f186d5689a1dcbc088a7a9322fe4eeb17ee53", "fetched_at": "2026-08-29T09:43:35.392931+00:00", "kind": "registry_npm", "missing": false, "url": "https://registry.npmjs.org/webextension-polyfill"}], "taxonomy_version": 1}, "when_to_choose": {"confidence": null, "enriched_at": "2026-08-29T18:46:37.999412+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "8696e6b95f45d300ba078590e7f1d479703acee5a273f9eb9213d87f4b4a9dd2", "fetched_at": "2026-08-28T04:07:41.510103+00:00", "kind": "readme", "missing": false, "url": "https://github.com/mozilla/webextension-polyfill"}, {"content_hash": "ac53393dd74e164b69de17f6180f186d5689a1dcbc088a7a9322fe4eeb17ee53", "fetched_at": "2026-08-29T09:43:35.392931+00:00", "kind": "registry_npm", "missing": false, "url": "https://registry.npmjs.org/webextension-polyfill"}], "taxonomy_version": 1}}, "score": {"components": {"activity": 95, "longevity": 100, "rhythm": 8}, "computed_at": "2026-09-03T02:20:16.233290+00:00", "flags": ["archived"], "formula": "round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)", "inputs": {"age_days": 3618, "days_push": 34, "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}}