| { |
| "javascript": { |
| "builtins": { |
| "Symbol": { |
| "__compat": { |
| "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Symbol", |
| "spec_url": "https://tc39.es/ecma262/multipage/fundamental-objects.html#sec-symbol-objects", |
| "tags": [ |
| "web-features:snapshot:ecmascript-2015", |
| "web-features:symbol" |
| ], |
| "support": { |
| "bun": { |
| "version_added": "1.0.0" |
| }, |
| "chrome": { |
| "version_added": "38" |
| }, |
| "chrome_android": "mirror", |
| "deno": { |
| "version_added": "1.0" |
| }, |
| "edge": { |
| "version_added": "12", |
| "notes": "Edge 12 included Symbol properties in `JSON.stringify()` output." |
| }, |
| "firefox": { |
| "version_added": "36" |
| }, |
| "firefox_android": "mirror", |
| "nodejs": { |
| "version_added": "0.12.0" |
| }, |
| "oculus": "mirror", |
| "opera": "mirror", |
| "opera_android": "mirror", |
| "safari": { |
| "version_added": "9" |
| }, |
| "safari_ios": "mirror", |
| "samsunginternet_android": "mirror", |
| "webview_android": "mirror", |
| "webview_ios": "mirror" |
| }, |
| "status": { |
| "experimental": false, |
| "standard_track": true, |
| "deprecated": false |
| } |
| }, |
| "Symbol": { |
| "__compat": { |
| "description": "`Symbol()` constructor", |
| "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Symbol/Symbol", |
| "spec_url": "https://tc39.es/ecma262/multipage/fundamental-objects.html#sec-symbol-constructor", |
| "tags": [ |
| "web-features:snapshot:ecmascript-2015", |
| "web-features:symbol" |
| ], |
| "support": { |
| "bun": { |
| "version_added": "1.0.0" |
| }, |
| "chrome": { |
| "version_added": "38" |
| }, |
| "chrome_android": "mirror", |
| "deno": { |
| "version_added": "1.0" |
| }, |
| "edge": { |
| "version_added": "12" |
| }, |
| "firefox": { |
| "version_added": "36" |
| }, |
| "firefox_android": "mirror", |
| "nodejs": { |
| "version_added": "0.12.0" |
| }, |
| "oculus": "mirror", |
| "opera": "mirror", |
| "opera_android": "mirror", |
| "safari": { |
| "version_added": "9" |
| }, |
| "safari_ios": "mirror", |
| "samsunginternet_android": "mirror", |
| "webview_android": "mirror", |
| "webview_ios": "mirror" |
| }, |
| "status": { |
| "experimental": false, |
| "standard_track": true, |
| "deprecated": false |
| } |
| } |
| }, |
| "asyncDispose": { |
| "__compat": { |
| "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Symbol/asyncDispose", |
| "spec_url": "https://tc39.es/proposal-async-explicit-resource-management/#table-1", |
| "tags": [ |
| "web-features:explicit-resource-management" |
| ], |
| "support": { |
| "bun": { |
| "version_added": "1.0.23" |
| }, |
| "chrome": { |
| "version_added": "127" |
| }, |
| "chrome_android": "mirror", |
| "deno": { |
| "version_added": "1.37" |
| }, |
| "edge": "mirror", |
| "firefox": { |
| "version_added": "141" |
| }, |
| "firefox_android": "mirror", |
| "nodejs": [ |
| { |
| "version_added": "24.0.0" |
| }, |
| { |
| "version_added": "20.4.0", |
| "version_removed": "21.0.0", |
| "partial_implementation": true, |
| "notes": "Only available for `fs` and `stream` resources." |
| }, |
| { |
| "version_added": "18.18.0", |
| "version_removed": "19.0.0", |
| "partial_implementation": true, |
| "notes": "Only available for `fs` and `stream` resources." |
| } |
| ], |
| "oculus": "mirror", |
| "opera": "mirror", |
| "opera_android": "mirror", |
| "safari": { |
| "version_added": false |
| }, |
| "safari_ios": "mirror", |
| "samsunginternet_android": "mirror", |
| "webview_android": "mirror", |
| "webview_ios": "mirror" |
| }, |
| "status": { |
| "experimental": false, |
| "standard_track": true, |
| "deprecated": false |
| } |
| } |
| }, |
| "asyncIterator": { |
| "__compat": { |
| "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Symbol/asyncIterator", |
| "spec_url": "https://tc39.es/ecma262/multipage/fundamental-objects.html#sec-symbol.asynciterator", |
| "tags": [ |
| "web-features:snapshot:ecmascript-2018", |
| "web-features:async-iterators" |
| ], |
| "support": { |
| "bun": { |
| "version_added": "1.0.0" |
| }, |
| "chrome": { |
| "version_added": "63" |
| }, |
| "chrome_android": "mirror", |
| "deno": { |
| "version_added": "1.0" |
| }, |
| "edge": "mirror", |
| "firefox": { |
| "version_added": "57" |
| }, |
| "firefox_android": "mirror", |
| "nodejs": { |
| "version_added": "10.0.0" |
| }, |
| "oculus": "mirror", |
| "opera": "mirror", |
| "opera_android": "mirror", |
| "safari": { |
| "version_added": "11.1" |
| }, |
| "safari_ios": "mirror", |
| "samsunginternet_android": "mirror", |
| "webview_android": "mirror", |
| "webview_ios": "mirror" |
| }, |
| "status": { |
| "experimental": false, |
| "standard_track": true, |
| "deprecated": false |
| } |
| } |
| }, |
| "description": { |
| "__compat": { |
| "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Symbol/description", |
| "spec_url": "https://tc39.es/ecma262/multipage/fundamental-objects.html#sec-symbol.prototype.description", |
| "tags": [ |
| "web-features:snapshot:ecmascript-2019", |
| "web-features:symbol" |
| ], |
| "support": { |
| "bun": { |
| "version_added": "1.0.0" |
| }, |
| "chrome": { |
| "version_added": "70" |
| }, |
| "chrome_android": "mirror", |
| "deno": { |
| "version_added": "1.0" |
| }, |
| "edge": "mirror", |
| "firefox": { |
| "version_added": "63" |
| }, |
| "firefox_android": "mirror", |
| "nodejs": { |
| "version_added": "11.0.0" |
| }, |
| "oculus": "mirror", |
| "opera": "mirror", |
| "opera_android": "mirror", |
| "safari": [ |
| { |
| "version_added": "12.1" |
| }, |
| { |
| "version_added": "12", |
| "version_removed": "12.1", |
| "partial_implementation": true, |
| "notes": "No support for an undefined description." |
| } |
| ], |
| "safari_ios": "mirror", |
| "samsunginternet_android": "mirror", |
| "webview_android": "mirror", |
| "webview_ios": "mirror" |
| }, |
| "status": { |
| "experimental": false, |
| "standard_track": true, |
| "deprecated": false |
| } |
| } |
| }, |
| "dispose": { |
| "__compat": { |
| "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Symbol/dispose", |
| "spec_url": "https://tc39.es/proposal-async-explicit-resource-management/#table-1", |
| "tags": [ |
| "web-features:explicit-resource-management" |
| ], |
| "support": { |
| "bun": { |
| "version_added": "1.0.23" |
| }, |
| "chrome": { |
| "version_added": "125" |
| }, |
| "chrome_android": "mirror", |
| "deno": { |
| "version_added": "1.37" |
| }, |
| "edge": "mirror", |
| "firefox": { |
| "version_added": "141" |
| }, |
| "firefox_android": "mirror", |
| "nodejs": [ |
| { |
| "version_added": "24.0.0" |
| }, |
| { |
| "version_added": "20.4.0", |
| "version_removed": "21.0.0", |
| "partial_implementation": true, |
| "notes": "Only available for `fs` and `stream` resources." |
| }, |
| { |
| "version_added": "18.18.0", |
| "version_removed": "19.0.0", |
| "partial_implementation": true, |
| "notes": "Only available for `fs` and `stream` resources." |
| } |
| ], |
| "oculus": "mirror", |
| "opera": "mirror", |
| "opera_android": "mirror", |
| "safari": { |
| "version_added": false |
| }, |
| "safari_ios": "mirror", |
| "samsunginternet_android": "mirror", |
| "webview_android": "mirror", |
| "webview_ios": "mirror" |
| }, |
| "status": { |
| "experimental": false, |
| "standard_track": true, |
| "deprecated": false |
| } |
| } |
| }, |
| "for": { |
| "__compat": { |
| "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Symbol/for", |
| "spec_url": "https://tc39.es/ecma262/multipage/fundamental-objects.html#sec-symbol.for", |
| "tags": [ |
| "web-features:snapshot:ecmascript-2015", |
| "web-features:symbol" |
| ], |
| "support": { |
| "bun": { |
| "version_added": "1.0.0" |
| }, |
| "chrome": { |
| "version_added": "40" |
| }, |
| "chrome_android": "mirror", |
| "deno": { |
| "version_added": "1.0" |
| }, |
| "edge": { |
| "version_added": "12" |
| }, |
| "firefox": { |
| "version_added": "36" |
| }, |
| "firefox_android": "mirror", |
| "nodejs": { |
| "version_added": "0.12.0" |
| }, |
| "oculus": "mirror", |
| "opera": "mirror", |
| "opera_android": "mirror", |
| "safari": { |
| "version_added": "9" |
| }, |
| "safari_ios": "mirror", |
| "samsunginternet_android": "mirror", |
| "webview_android": "mirror", |
| "webview_ios": "mirror" |
| }, |
| "status": { |
| "experimental": false, |
| "standard_track": true, |
| "deprecated": false |
| } |
| } |
| }, |
| "hasInstance": { |
| "__compat": { |
| "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Symbol/hasInstance", |
| "spec_url": "https://tc39.es/ecma262/multipage/fundamental-objects.html#sec-symbol.hasinstance", |
| "tags": [ |
| "web-features:snapshot:ecmascript-2015", |
| "web-features:symbol" |
| ], |
| "support": { |
| "bun": { |
| "version_added": "1.0.0" |
| }, |
| "chrome": { |
| "version_added": "50" |
| }, |
| "chrome_android": "mirror", |
| "deno": { |
| "version_added": "1.0" |
| }, |
| "edge": { |
| "version_added": "15" |
| }, |
| "firefox": { |
| "version_added": "50" |
| }, |
| "firefox_android": "mirror", |
| "nodejs": { |
| "version_added": "6.5.0" |
| }, |
| "oculus": "mirror", |
| "opera": "mirror", |
| "opera_android": "mirror", |
| "safari": { |
| "version_added": "10" |
| }, |
| "safari_ios": "mirror", |
| "samsunginternet_android": "mirror", |
| "webview_android": "mirror", |
| "webview_ios": "mirror" |
| }, |
| "status": { |
| "experimental": false, |
| "standard_track": true, |
| "deprecated": false |
| } |
| } |
| }, |
| "isConcatSpreadable": { |
| "__compat": { |
| "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Symbol/isConcatSpreadable", |
| "spec_url": "https://tc39.es/ecma262/multipage/fundamental-objects.html#sec-symbol.isconcatspreadable", |
| "tags": [ |
| "web-features:snapshot:ecmascript-2015", |
| "web-features:symbol" |
| ], |
| "support": { |
| "bun": { |
| "version_added": "1.0.0" |
| }, |
| "chrome": { |
| "version_added": "48" |
| }, |
| "chrome_android": "mirror", |
| "deno": { |
| "version_added": "1.0" |
| }, |
| "edge": { |
| "version_added": "15" |
| }, |
| "firefox": { |
| "version_added": "48" |
| }, |
| "firefox_android": "mirror", |
| "nodejs": { |
| "version_added": "6.0.0" |
| }, |
| "oculus": "mirror", |
| "opera": "mirror", |
| "opera_android": "mirror", |
| "safari": { |
| "version_added": "10" |
| }, |
| "safari_ios": "mirror", |
| "samsunginternet_android": "mirror", |
| "webview_android": "mirror", |
| "webview_ios": "mirror" |
| }, |
| "status": { |
| "experimental": false, |
| "standard_track": true, |
| "deprecated": false |
| } |
| } |
| }, |
| "iterator": { |
| "__compat": { |
| "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Symbol/iterator", |
| "spec_url": "https://tc39.es/ecma262/multipage/fundamental-objects.html#sec-symbol.iterator", |
| "tags": [ |
| "web-features:snapshot:ecmascript-2015", |
| "web-features:symbol" |
| ], |
| "support": { |
| "bun": { |
| "version_added": "1.0.0" |
| }, |
| "chrome": { |
| "version_added": "43" |
| }, |
| "chrome_android": "mirror", |
| "deno": { |
| "version_added": "1.0" |
| }, |
| "edge": { |
| "version_added": "12" |
| }, |
| "firefox": { |
| "version_added": "36" |
| }, |
| "firefox_android": "mirror", |
| "nodejs": { |
| "version_added": "0.12.0" |
| }, |
| "oculus": "mirror", |
| "opera": "mirror", |
| "opera_android": "mirror", |
| "safari": { |
| "version_added": "10" |
| }, |
| "safari_ios": "mirror", |
| "samsunginternet_android": "mirror", |
| "webview_android": "mirror", |
| "webview_ios": "mirror" |
| }, |
| "status": { |
| "experimental": false, |
| "standard_track": true, |
| "deprecated": false |
| } |
| } |
| }, |
| "keyFor": { |
| "__compat": { |
| "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Symbol/keyFor", |
| "spec_url": "https://tc39.es/ecma262/multipage/fundamental-objects.html#sec-symbol.keyfor", |
| "tags": [ |
| "web-features:snapshot:ecmascript-2015", |
| "web-features:symbol" |
| ], |
| "support": { |
| "bun": { |
| "version_added": "1.0.0" |
| }, |
| "chrome": { |
| "version_added": "40" |
| }, |
| "chrome_android": "mirror", |
| "deno": { |
| "version_added": "1.0" |
| }, |
| "edge": { |
| "version_added": "12" |
| }, |
| "firefox": { |
| "version_added": "36" |
| }, |
| "firefox_android": "mirror", |
| "nodejs": { |
| "version_added": "0.12.0" |
| }, |
| "oculus": "mirror", |
| "opera": "mirror", |
| "opera_android": "mirror", |
| "safari": { |
| "version_added": "9" |
| }, |
| "safari_ios": "mirror", |
| "samsunginternet_android": "mirror", |
| "webview_android": "mirror", |
| "webview_ios": "mirror" |
| }, |
| "status": { |
| "experimental": false, |
| "standard_track": true, |
| "deprecated": false |
| } |
| } |
| }, |
| "match": { |
| "__compat": { |
| "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Symbol/match", |
| "spec_url": "https://tc39.es/ecma262/multipage/fundamental-objects.html#sec-symbol.match", |
| "tags": [ |
| "web-features:snapshot:ecmascript-2015", |
| "web-features:symbol" |
| ], |
| "support": { |
| "bun": { |
| "version_added": "1.0.0" |
| }, |
| "chrome": { |
| "version_added": "50" |
| }, |
| "chrome_android": "mirror", |
| "deno": { |
| "version_added": "1.0" |
| }, |
| "edge": "mirror", |
| "firefox": { |
| "version_added": "40" |
| }, |
| "firefox_android": "mirror", |
| "nodejs": { |
| "version_added": "6.0.0" |
| }, |
| "oculus": "mirror", |
| "opera": "mirror", |
| "opera_android": "mirror", |
| "safari": { |
| "version_added": "10" |
| }, |
| "safari_ios": "mirror", |
| "samsunginternet_android": "mirror", |
| "webview_android": "mirror", |
| "webview_ios": "mirror" |
| }, |
| "status": { |
| "experimental": false, |
| "standard_track": true, |
| "deprecated": false |
| } |
| } |
| }, |
| "matchAll": { |
| "__compat": { |
| "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Symbol/matchAll", |
| "spec_url": "https://tc39.es/ecma262/multipage/fundamental-objects.html#sec-symbol.matchall", |
| "tags": [ |
| "web-features:snapshot:ecmascript-2020", |
| "web-features:symbol" |
| ], |
| "support": { |
| "bun": { |
| "version_added": "1.0.0" |
| }, |
| "chrome": { |
| "version_added": "73" |
| }, |
| "chrome_android": "mirror", |
| "deno": { |
| "version_added": "1.0" |
| }, |
| "edge": "mirror", |
| "firefox": { |
| "version_added": "67" |
| }, |
| "firefox_android": "mirror", |
| "nodejs": { |
| "version_added": "12.0.0" |
| }, |
| "oculus": "mirror", |
| "opera": "mirror", |
| "opera_android": "mirror", |
| "safari": { |
| "version_added": "13" |
| }, |
| "safari_ios": "mirror", |
| "samsunginternet_android": "mirror", |
| "webview_android": "mirror", |
| "webview_ios": "mirror" |
| }, |
| "status": { |
| "experimental": false, |
| "standard_track": true, |
| "deprecated": false |
| } |
| } |
| }, |
| "replace": { |
| "__compat": { |
| "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Symbol/replace", |
| "spec_url": "https://tc39.es/ecma262/multipage/fundamental-objects.html#sec-symbol.replace", |
| "tags": [ |
| "web-features:snapshot:ecmascript-2015", |
| "web-features:symbol" |
| ], |
| "support": { |
| "bun": { |
| "version_added": "1.0.0" |
| }, |
| "chrome": { |
| "version_added": "50" |
| }, |
| "chrome_android": "mirror", |
| "deno": { |
| "version_added": "1.0" |
| }, |
| "edge": "mirror", |
| "firefox": { |
| "version_added": "49" |
| }, |
| "firefox_android": "mirror", |
| "nodejs": { |
| "version_added": "6.0.0" |
| }, |
| "oculus": "mirror", |
| "opera": "mirror", |
| "opera_android": "mirror", |
| "safari": { |
| "version_added": "10" |
| }, |
| "safari_ios": "mirror", |
| "samsunginternet_android": "mirror", |
| "webview_android": "mirror", |
| "webview_ios": "mirror" |
| }, |
| "status": { |
| "experimental": false, |
| "standard_track": true, |
| "deprecated": false |
| } |
| } |
| }, |
| "search": { |
| "__compat": { |
| "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Symbol/search", |
| "spec_url": "https://tc39.es/ecma262/multipage/fundamental-objects.html#sec-symbol.search", |
| "tags": [ |
| "web-features:snapshot:ecmascript-2015", |
| "web-features:symbol" |
| ], |
| "support": { |
| "bun": { |
| "version_added": "1.0.0" |
| }, |
| "chrome": { |
| "version_added": "50" |
| }, |
| "chrome_android": "mirror", |
| "deno": { |
| "version_added": "1.0" |
| }, |
| "edge": "mirror", |
| "firefox": { |
| "version_added": "49" |
| }, |
| "firefox_android": "mirror", |
| "nodejs": { |
| "version_added": "6.0.0" |
| }, |
| "oculus": "mirror", |
| "opera": "mirror", |
| "opera_android": "mirror", |
| "safari": { |
| "version_added": "10" |
| }, |
| "safari_ios": "mirror", |
| "samsunginternet_android": "mirror", |
| "webview_android": "mirror", |
| "webview_ios": "mirror" |
| }, |
| "status": { |
| "experimental": false, |
| "standard_track": true, |
| "deprecated": false |
| } |
| } |
| }, |
| "species": { |
| "__compat": { |
| "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Symbol/species", |
| "spec_url": "https://tc39.es/ecma262/multipage/fundamental-objects.html#sec-symbol.species", |
| "tags": [ |
| "web-features:snapshot:ecmascript-2015", |
| "web-features:symbol" |
| ], |
| "support": { |
| "bun": { |
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| } |
| } |
| } |
