{ "api": { "FileSystemFileEntry": { "__compat": { "mdn_url": "https://developer.mozilla.org/docs/Web/API/FileSystemFileEntry", "support": { "chrome": { "version_added": "8", "alternative_name": "FileEntry" }, "chrome_android": { "version_added": "18", "alternative_name": "FileEntry" }, "edge": { "version_added": "79", "prefix": "webkit" }, "firefox": { "version_added": "50" }, "firefox_android": { "version_added": "50" }, "ie": { "version_added": false }, "opera": { "version_added": false }, "opera_android": { "version_added": false }, "safari": { "version_added": "11.1" }, "safari_ios": { "version_added": "11.3" }, "samsunginternet_android": { "prefix": "webkit", "version_added": true }, "webview_android": { "version_added": "≤37", "alternative_name": "FileEntry" } }, "status": { "experimental": false, "standard_track": true, "deprecated": false } }, "createWriter": { "__compat": { "mdn_url": "https://developer.mozilla.org/docs/Web/API/FileSystemFileEntry/createWriter", "support": { "chrome": { "version_added": "8" }, "chrome_android": { "version_added": "18" }, "edge": { "version_added": "79" }, "firefox": { "version_added": "50", "version_removed": "52", "notes": "While the createWriter() method existed, it immediately called errorCallback with the NS_ERROR_DOM_SECURITY_ERR error." }, "firefox_android": { "version_added": "50", "version_removed": "52", "notes": "While the createWriter() method existed, it immediately called errorCallback with the NS_ERROR_DOM_SECURITY_ERR error." }, "ie": { "version_added": false }, "opera": { "version_added": false }, "opera_android": { "version_added": false }, "safari": { "version_added": false }, "safari_ios": { "version_added": false }, "samsunginternet_android": { "version_added": true }, "webview_android": { "version_added": "≤37" } }, "status": { "experimental": false, "standard_track": false, "deprecated": true } } }, "file": { "__compat": { "mdn_url": "https://developer.mozilla.org/docs/Web/API/FileSystemFileEntry/file", "support": { "chrome": { "version_added": "8" }, "chrome_android": { "version_added": "18" }, "edge": { "version_added": "79" }, "firefox": { "version_added": "50" }, "firefox_android": { "version_added": "50" }, "ie": { "version_added": false }, "opera": { "version_added": false }, "opera_android": { "version_added": false }, "safari": { "version_added": "11.1" }, "safari_ios": { "version_added": "11.3" }, "samsunginternet_android": { "version_added": true }, "webview_android": { "version_added": "≤37" } }, "status": { "experimental": false, "standard_track": true, "deprecated": false } } } } } }