| { |
| "javascript": { |
| "builtins": { |
| "WeakRef": { |
| "__compat": { |
| "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/WeakRef", |
| "spec_url": "https://tc39.es/ecma262/multipage/managing-memory.html#sec-weak-ref-objects", |
| "tags": [ |
| "web-features:snapshot:ecmascript-2021", |
| "web-features:weak-references" |
| ], |
| "support": { |
| "bun": { |
| "version_added": "1.0.0" |
| }, |
| "chrome": { |
| "version_added": "84" |
| }, |
| "chrome_android": "mirror", |
| "deno": { |
| "version_added": "1.0" |
| }, |
| "edge": "mirror", |
| "firefox": { |
| "version_added": "79" |
| }, |
| "firefox_android": "mirror", |
| "nodejs": { |
| "version_added": "14.6.0" |
| }, |
| "oculus": "mirror", |
| "opera": "mirror", |
| "opera_android": "mirror", |
| "safari": { |
| "version_added": "14.1" |
| }, |
| "safari_ios": "mirror", |
| "samsunginternet_android": "mirror", |
| "webview_android": "mirror", |
| "webview_ios": "mirror" |
| }, |
| "status": { |
| "experimental": false, |
| "standard_track": true, |
| "deprecated": false |
| } |
| }, |
| "WeakRef": { |
| "__compat": { |
| "description": "`WeakRef()` constructor", |
| "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/WeakRef/WeakRef", |
| "spec_url": "https://tc39.es/ecma262/multipage/managing-memory.html#sec-weak-ref-constructor", |
| "tags": [ |
| "web-features:snapshot:ecmascript-2021", |
| "web-features:weak-references" |
| ], |
| "support": { |
| "bun": { |
| "version_added": "1.0.0" |
| }, |
| "chrome": { |
| "version_added": "84" |
| }, |
| "chrome_android": "mirror", |
| "deno": { |
| "version_added": "1.0" |
| }, |
| "edge": "mirror", |
| "firefox": { |
| "version_added": "79" |
| }, |
| "firefox_android": "mirror", |
| "nodejs": { |
| "version_added": "14.6.0" |
| }, |
| "oculus": "mirror", |
| "opera": "mirror", |
| "opera_android": "mirror", |
| "safari": { |
| "version_added": "14.1" |
| }, |
| "safari_ios": "mirror", |
| "samsunginternet_android": "mirror", |
| "webview_android": "mirror", |
| "webview_ios": "mirror" |
| }, |
| "status": { |
| "experimental": false, |
| "standard_track": true, |
| "deprecated": false |
| } |
| }, |
| "symbol_as_target": { |
| "__compat": { |
| "description": "Non-registered symbol as target", |
| "tags": [ |
| "web-features:snapshot:ecmascript-2023", |
| "web-features:weak-references" |
| ], |
| "support": { |
| "bun": { |
| "version_added": "1.0.0" |
| }, |
| "chrome": { |
| "version_added": "109" |
| }, |
| "chrome_android": "mirror", |
| "deno": { |
| "version_added": "1.28" |
| }, |
| "edge": "mirror", |
| "firefox": { |
| "version_added": "146" |
| }, |
| "firefox_android": "mirror", |
| "nodejs": { |
| "version_added": "20.0.0" |
| }, |
| "oculus": "mirror", |
| "opera": "mirror", |
| "opera_android": "mirror", |
| "safari": { |
| "version_added": "16.4" |
| }, |
| "safari_ios": "mirror", |
| "samsunginternet_android": "mirror", |
| "webview_android": "mirror", |
| "webview_ios": "mirror" |
| }, |
| "status": { |
| "experimental": false, |
| "standard_track": true, |
| "deprecated": false |
| } |
| } |
| } |
| }, |
| "deref": { |
| "__compat": { |
| "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/WeakRef/deref", |
| "spec_url": "https://tc39.es/ecma262/multipage/managing-memory.html#sec-weak-ref.prototype.deref", |
| "tags": [ |
| "web-features:snapshot:ecmascript-2021", |
| "web-features:weak-references" |
| ], |
| "support": { |
| "bun": { |
| "version_added": "1.0.0" |
| }, |
| "chrome": { |
| "version_added": "84" |
| }, |
| "chrome_android": "mirror", |
| "deno": { |
| "version_added": "1.0" |
| }, |
| "edge": "mirror", |
| "firefox": { |
| "version_added": "79" |
| }, |
| "firefox_android": "mirror", |
| "nodejs": { |
| "version_added": "14.6.0" |
| }, |
| "oculus": "mirror", |
| "opera": "mirror", |
| "opera_android": "mirror", |
| "safari": { |
| "version_added": "14.1" |
| }, |
| "safari_ios": "mirror", |
| "samsunginternet_android": "mirror", |
| "webview_android": "mirror", |
| "webview_ios": "mirror" |
| }, |
| "status": { |
| "experimental": false, |
| "standard_track": true, |
| "deprecated": false |
| } |
| } |
| } |
| } |
| } |
| } |
| } |
