{
  "api": {
    "Notification": {
      "__compat": {
        "mdn_url": "https://developer.mozilla.org/docs/Web/API/Notification",
        "spec_url": "https://notifications.spec.whatwg.org/#notification",
        "tags": [
          "web-features:notifications"
        ],
        "support": {
          "chrome": {
            "version_added": "20",
            "notes": [
              "Starting in Chrome 49, notifications do not work in incognito mode.",
              "Before Chrome 42, service worker additions were not supported."
            ]
          },
          "chrome_android": {
            "version_added": "42",
            "partial_implementation": true,
            "notes": "A notification can only be sent from a service worker. To show a notification, see [`ServiceWorkerRegistration.showNotification()`](https://developer.mozilla.org/docs/Web/API/ServiceWorkerRegistration/showNotification)."
          },
          "edge": {
            "version_added": "14"
          },
          "firefox": [
            {
              "version_added": "22"
            },
            {
              "prefix": "moz",
              "version_added": "4"
            }
          ],
          "firefox_android": "mirror",
          "oculus": "mirror",
          "opera": {
            "version_added": "23",
            "notes": [
              "Starting in Opera 36, notifications do not work in incognito mode.",
              "Before Opera 29, service worker additions were not supported."
            ]
          },
          "opera_android": {
            "version_added": "29",
            "partial_implementation": true,
            "notes": [
              "Notifications in Opera for Android are only available through service workers. To show notifications on Android, see [`ServiceWorkerRegistration.showNotification()`](https://developer.mozilla.org/docs/Web/API/ServiceWorkerRegistration/showNotification).",
              "Starting in Opera for Android 36, notifications do not work in incognito mode."
            ]
          },
          "safari": {
            "version_added": "7"
          },
          "safari_ios": {
            "version_added": "16.4",
            "partial_implementation": true,
            "notes": [
              "The `Notification` interface is undefined, unless the page is a web app saved to the home screen. The app's manifest must have a non-default `display` value.",
              "A notification can only be sent from a service worker. To show a notification, see [`ServiceWorkerRegistration.showNotification()`](https://developer.mozilla.org/docs/Web/API/ServiceWorkerRegistration/showNotification)."
            ]
          },
          "samsunginternet_android": {
            "version_added": "4.0",
            "partial_implementation": true,
            "notes": [
              "Notifications in Samsung Browser are only available through service workers. To show notifications on Android, see [`ServiceWorkerRegistration.showNotification()`](https://developer.mozilla.org/docs/Web/API/ServiceWorkerRegistration/showNotification).",
              "Starting in Samsung Browser 5.0, notifications do not work in incognito mode."
            ]
          },
          "webview_android": {
            "version_added": false,
            "impl_url": "https://crbug.com/40443309"
          },
          "webview_ios": {
            "version_added": false
          }
        },
        "status": {
          "experimental": false,
          "standard_track": true,
          "deprecated": false
        }
      },
      "Notification": {
        "__compat": {
          "description": "`Notification()` constructor",
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/Notification/Notification",
          "spec_url": "https://notifications.spec.whatwg.org/#dom-notification-notification",
          "tags": [
            "web-features:notifications"
          ],
          "support": {
            "chrome": {
              "version_added": "20"
            },
            "chrome_android": {
              "version_added": "42",
              "partial_implementation": true,
              "notes": [
                "A notification can only be sent from a service worker. To show a notification, see [`ServiceWorkerRegistration.showNotification()`](https://developer.mozilla.org/docs/Web/API/ServiceWorkerRegistration/showNotification).",
                "This constructor always throws a `TypeError` exception."
              ]
            },
            "edge": {
              "version_added": "14"
            },
            "firefox": [
              {
                "version_added": "22"
              },
              {
                "prefix": "moz",
                "version_added": "4"
              }
            ],
            "firefox_android": "mirror",
            "oculus": "mirror",
            "opera": {
              "version_added": "23"
            },
            "opera_android": "mirror",
            "safari": {
              "version_added": "7"
            },
            "safari_ios": {
              "version_added": "16.4",
              "partial_implementation": true,
              "notes": [
                "This constructor throws a `ReferenceError` exception, unless the page is a web app saved to the home screen. The app's manifest must have a non-default `display` value.",
                "A notification can only be sent from a service worker. To show a notification, see [`ServiceWorkerRegistration.showNotification()`](https://developer.mozilla.org/docs/Web/API/ServiceWorkerRegistration/showNotification)."
              ]
            },
            "samsunginternet_android": "mirror",
            "webview_android": {
              "version_added": false,
              "impl_url": "https://crbug.com/40443309"
            },
            "webview_ios": {
              "version_added": false
            }
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "secure_context_required": {
        "__compat": {
          "description": "Secure context required",
          "spec_url": "https://w3c.github.io/permissions/#dfn-powerful-feature",
          "tags": [
            "web-features:notifications"
          ],
          "support": {
            "chrome": {
              "version_added": "62"
            },
            "chrome_android": "mirror",
            "edge": "mirror",
            "firefox": {
              "version_added": "67"
            },
            "firefox_android": "mirror",
            "oculus": "mirror",
            "opera": "mirror",
            "opera_android": "mirror",
            "safari": {
              "version_added": false
            },
            "safari_ios": "mirror",
            "samsunginternet_android": "mirror",
            "webview_android": {
              "version_added": false,
              "impl_url": "https://crbug.com/40443309"
            },
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "worker_support": {
        "__compat": {
          "description": "Available in workers",
          "spec_url": "https://notifications.spec.whatwg.org/#api",
          "tags": [
            "web-features:notifications"
          ],
          "support": {
            "chrome": {
              "version_added": "42"
            },
            "chrome_android": "mirror",
            "edge": {
              "version_added": "15"
            },
            "firefox": {
              "version_added": "41"
            },
            "firefox_android": "mirror",
            "oculus": "mirror",
            "opera": "mirror",
            "opera_android": "mirror",
            "safari": {
              "version_added": false
            },
            "safari_ios": "mirror",
            "samsunginternet_android": "mirror",
            "webview_android": {
              "version_added": false,
              "impl_url": "https://crbug.com/40443309"
            },
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "actions": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/Notification/actions",
          "spec_url": "https://notifications.spec.whatwg.org/#dom-notification-actions",
          "tags": [
            "web-features:notifications"
          ],
          "support": {
            "chrome": {
              "version_added": "53"
            },
            "chrome_android": "mirror",
            "edge": {
              "version_added": "18"
            },
            "firefox": {
              "version_added": "152"
            },
            "firefox_android": "mirror",
            "oculus": "mirror",
            "opera": {
              "version_added": "39"
            },
            "opera_android": "mirror",
            "safari": {
              "version_added": false
            },
            "safari_ios": "mirror",
            "samsunginternet_android": "mirror",
            "webview_android": {
              "version_added": false,
              "impl_url": "https://crbug.com/40443309"
            },
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "badge": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/Notification/badge",
          "spec_url": "https://notifications.spec.whatwg.org/#dom-notification-badge",
          "tags": [
            "web-features:notifications"
          ],
          "support": {
            "chrome": {
              "version_added": "53"
            },
            "chrome_android": "mirror",
            "edge": {
              "version_added": "18"
            },
            "firefox": {
              "version_added": false
            },
            "firefox_android": "mirror",
            "oculus": "mirror",
            "opera": {
              "version_added": "39"
            },
            "opera_android": "mirror",
            "safari": {
              "version_added": false,
              "impl_url": "https://webkit.org/b/280160"
            },
            "safari_ios": "mirror",
            "samsunginternet_android": "mirror",
            "webview_android": {
              "version_added": false,
              "impl_url": "https://crbug.com/40443309"
            },
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "body": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/Notification/body",
          "spec_url": "https://notifications.spec.whatwg.org/#dom-notification-body",
          "tags": [
            "web-features:notifications"
          ],
          "support": {
            "chrome": {
              "version_added": "33"
            },
            "chrome_android": {
              "version_added": "42"
            },
            "edge": {
              "version_added": "14"
            },
            "firefox": {
              "version_added": "26"
            },
            "firefox_android": "mirror",
            "oculus": "mirror",
            "opera": {
              "version_added": "23"
            },
            "opera_android": "mirror",
            "safari": {
              "version_added": "11"
            },
            "safari_ios": {
              "version_added": "16.4"
            },
            "samsunginternet_android": "mirror",
            "webview_android": {
              "version_added": false,
              "impl_url": "https://crbug.com/40443309"
            },
            "webview_ios": {
              "version_added": false
            }
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "click_event": {
        "__compat": {
          "description": "`click` event",
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/Notification/click_event",
          "spec_url": "https://notifications.spec.whatwg.org/#dom-notification-onclick",
          "tags": [
            "web-features:notifications"
          ],
          "support": {
            "chrome": {
              "version_added": "20"
            },
            "chrome_android": {
              "version_added": "42"
            },
            "edge": {
              "version_added": "14"
            },
            "firefox": {
              "version_added": "22"
            },
            "firefox_android": "mirror",
            "oculus": "mirror",
            "opera": {
              "version_added": "23"
            },
            "opera_android": "mirror",
            "safari": {
              "version_added": "7"
            },
            "safari_ios": {
              "version_added": "16.4"
            },
            "samsunginternet_android": "mirror",
            "webview_android": {
              "version_added": false,
              "impl_url": "https://crbug.com/40443309"
            },
            "webview_ios": {
              "version_added": false
            }
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "close": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/Notification/close",
          "spec_url": "https://notifications.spec.whatwg.org/#dom-notification-close",
          "tags": [
            "web-features:notifications"
          ],
          "support": {
            "chrome": {
              "version_added": "20"
            },
            "chrome_android": {
              "version_added": "42"
            },
            "edge": {
              "version_added": "14"
            },
            "firefox": {
              "version_added": "22"
            },
            "firefox_android": "mirror",
            "oculus": "mirror",
            "opera": {
              "version_added": "23"
            },
            "opera_android": "mirror",
            "safari": {
              "version_added": "7"
            },
            "safari_ios": {
              "version_added": "16.4"
            },
            "samsunginternet_android": "mirror",
            "webview_android": {
              "version_added": false,
              "impl_url": "https://crbug.com/40443309"
            },
            "webview_ios": {
              "version_added": false
            }
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "close_event": {
        "__compat": {
          "description": "`close` event",
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/Notification/close_event",
          "spec_url": "https://notifications.spec.whatwg.org/#dom-notification-onclose",
          "tags": [
            "web-features:notifications"
          ],
          "support": {
            "chrome": {
              "version_added": "20"
            },
            "chrome_android": {
              "version_added": "42"
            },
            "edge": {
              "version_added": "14"
            },
            "firefox": {
              "version_added": "22"
            },
            "firefox_android": "mirror",
            "oculus": "mirror",
            "opera": {
              "version_added": "23"
            },
            "opera_android": "mirror",
            "safari": {
              "version_added": "7"
            },
            "safari_ios": {
              "version_added": "16.4"
            },
            "samsunginternet_android": "mirror",
            "webview_android": {
              "version_added": false,
              "impl_url": "https://crbug.com/40443309"
            },
            "webview_ios": {
              "version_added": false
            }
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "data": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/Notification/data",
          "spec_url": "https://notifications.spec.whatwg.org/#dom-notification-data",
          "tags": [
            "web-features:notifications"
          ],
          "support": {
            "chrome": {
              "version_added": "44"
            },
            "chrome_android": "mirror",
            "edge": {
              "version_added": "16"
            },
            "firefox": {
              "version_added": "34"
            },
            "firefox_android": "mirror",
            "oculus": "mirror",
            "opera": "mirror",
            "opera_android": "mirror",
            "safari": {
              "version_added": "16"
            },
            "safari_ios": {
              "version_added": "16.4"
            },
            "samsunginternet_android": "mirror",
            "webview_android": {
              "version_added": false,
              "impl_url": "https://crbug.com/40443309"
            },
            "webview_ios": {
              "version_added": false
            }
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "dir": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/Notification/dir",
          "spec_url": "https://notifications.spec.whatwg.org/#dom-notification-dir",
          "tags": [
            "web-features:notifications"
          ],
          "support": {
            "chrome": {
              "version_added": "20"
            },
            "chrome_android": {
              "version_added": "42"
            },
            "edge": {
              "version_added": "14"
            },
            "firefox": {
              "version_added": "26"
            },
            "firefox_android": "mirror",
            "oculus": "mirror",
            "opera": {
              "version_added": "23"
            },
            "opera_android": "mirror",
            "safari": {
              "version_added": "7"
            },
            "safari_ios": {
              "version_added": "16.4"
            },
            "samsunginternet_android": "mirror",
            "webview_android": {
              "version_added": false,
              "impl_url": "https://crbug.com/40443309"
            },
            "webview_ios": {
              "version_added": false
            }
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "error_event": {
        "__compat": {
          "description": "`error` event",
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/Notification/error_event",
          "spec_url": "https://notifications.spec.whatwg.org/#dom-notification-onerror",
          "tags": [
            "web-features:notifications"
          ],
          "support": {
            "chrome": {
              "version_added": "20"
            },
            "chrome_android": {
              "version_added": "42"
            },
            "edge": {
              "version_added": "14"
            },
            "firefox": {
              "version_added": "22"
            },
            "firefox_android": "mirror",
            "oculus": "mirror",
            "opera": {
              "version_added": "23"
            },
            "opera_android": "mirror",
            "safari": {
              "version_added": "7"
            },
            "safari_ios": {
              "version_added": "16.4"
            },
            "samsunginternet_android": "mirror",
            "webview_android": {
              "version_added": false,
              "impl_url": "https://crbug.com/40443309"
            },
            "webview_ios": {
              "version_added": false
            }
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "icon": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/Notification/icon",
          "spec_url": "https://notifications.spec.whatwg.org/#dom-notification-icon",
          "tags": [
            "web-features:notifications"
          ],
          "support": {
            "chrome": {
              "version_added": "33"
            },
            "chrome_android": {
              "version_added": "42"
            },
            "edge": {
              "version_added": "14"
            },
            "firefox": {
              "version_added": "26"
            },
            "firefox_android": "mirror",
            "oculus": "mirror",
            "opera": {
              "version_added": "23"
            },
            "opera_android": "mirror",
            "safari": {
              "version_added": false,
              "impl_url": "https://webkit.org/b/280162",
              "notes": "The property can be set, but has no effect."
            },
            "safari_ios": "mirror",
            "samsunginternet_android": "mirror",
            "webview_android": {
              "version_added": false,
              "impl_url": "https://crbug.com/40443309"
            },
            "webview_ios": {
              "version_added": false
            }
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "image": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/Notification/image",
          "spec_url": "https://notifications.spec.whatwg.org/#image-resource",
          "tags": [
            "web-features:notifications"
          ],
          "support": {
            "chrome": {
              "version_added": "56"
            },
            "chrome_android": "mirror",
            "edge": {
              "version_added": "18"
            },
            "firefox": {
              "version_added": false
            },
            "firefox_android": "mirror",
            "oculus": "mirror",
            "opera": "mirror",
            "opera_android": "mirror",
            "safari": {
              "version_added": false
            },
            "safari_ios": "mirror",
            "samsunginternet_android": "mirror",
            "webview_android": {
              "version_added": false,
              "impl_url": "https://crbug.com/40443309"
            },
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": true,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "lang": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/Notification/lang",
          "spec_url": "https://notifications.spec.whatwg.org/#dom-notification-lang",
          "tags": [
            "web-features:notifications"
          ],
          "support": {
            "chrome": {
              "version_added": "33"
            },
            "chrome_android": {
              "version_added": "42"
            },
            "edge": {
              "version_added": "14"
            },
            "firefox": {
              "version_added": "26"
            },
            "firefox_android": "mirror",
            "oculus": "mirror",
            "opera": {
              "version_added": "23"
            },
            "opera_android": "mirror",
            "safari": {
              "version_added": "11"
            },
            "safari_ios": {
              "version_added": false
            },
            "samsunginternet_android": "mirror",
            "webview_android": {
              "version_added": false,
              "impl_url": "https://crbug.com/40443309"
            },
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "maxActions_static": {
        "__compat": {
          "description": "`maxActions` static property",
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/Notification/maxActions_static",
          "spec_url": "https://notifications.spec.whatwg.org/#dom-notification-maxactions",
          "tags": [
            "web-features:notifications"
          ],
          "support": {
            "chrome": {
              "version_added": "48"
            },
            "chrome_android": "mirror",
            "edge": {
              "version_added": "18"
            },
            "firefox": [
              {
                "version_added": "152"
              },
              {
                "version_added": "138",
                "version_removed": "140"
              }
            ],
            "firefox_android": "mirror",
            "oculus": "mirror",
            "opera": "mirror",
            "opera_android": "mirror",
            "safari": {
              "version_added": false
            },
            "safari_ios": "mirror",
            "samsunginternet_android": "mirror",
            "webview_android": {
              "version_added": false,
              "impl_url": "https://crbug.com/40443309"
            },
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "navigate": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/Notification/navigate",
          "spec_url": "https://notifications.spec.whatwg.org/#dom-notification-navigate",
          "support": {
            "chrome": {
              "version_added": false
            },
            "chrome_android": "mirror",
            "edge": "mirror",
            "firefox": {
              "version_added": "preview"
            },
            "firefox_android": "mirror",
            "oculus": "mirror",
            "opera": "mirror",
            "opera_android": "mirror",
            "safari": {
              "version_added": "18.4"
            },
            "safari_ios": "mirror",
            "samsunginternet_android": "mirror",
            "webview_android": "mirror",
            "webview_ios": {
              "version_added": false
            }
          },
          "status": {
            "experimental": true,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "permission_static": {
        "__compat": {
          "description": "`permission` static property",
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/Notification/permission_static",
          "spec_url": "https://notifications.spec.whatwg.org/#dom-notification-permission",
          "tags": [
            "web-features:notifications"
          ],
          "support": {
            "chrome": {
              "version_added": "32"
            },
            "chrome_android": {
              "version_added": "42"
            },
            "edge": {
              "version_added": "14"
            },
            "firefox": {
              "version_added": "22"
            },
            "firefox_android": "mirror",
            "oculus": "mirror",
            "opera": {
              "version_added": "23"
            },
            "opera_android": "mirror",
            "safari": {
              "version_added": "7"
            },
            "safari_ios": {
              "version_added": "16.4",
              "partial_implementation": true,
              "notes": "The parent `Notification` interface is undefined unless the page is a web app saved to the home screen. The app's manifest must have a non-default `display` value."
            },
            "samsunginternet_android": "mirror",
            "webview_android": {
              "version_added": false,
              "impl_url": "https://crbug.com/40443309"
            },
            "webview_ios": {
              "version_added": false
            }
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "renotify": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/Notification/renotify",
          "spec_url": "https://notifications.spec.whatwg.org/#dom-notification-renotify",
          "tags": [
            "web-features:notifications"
          ],
          "support": {
            "chrome": {
              "version_added": "50"
            },
            "chrome_android": "mirror",
            "edge": "mirror",
            "firefox": {
              "version_added": false
            },
            "firefox_android": "mirror",
            "oculus": "mirror",
            "opera": "mirror",
            "opera_android": "mirror",
            "safari": {
              "version_added": false
            },
            "safari_ios": "mirror",
            "samsunginternet_android": "mirror",
            "webview_android": {
              "version_added": false,
              "impl_url": "https://crbug.com/40443309"
            },
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": true,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "requestPermission_static": {
        "__compat": {
          "description": "`requestPermission()` static method",
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/Notification/requestPermission_static",
          "spec_url": "https://notifications.spec.whatwg.org/#dom-notification-requestpermission",
          "tags": [
            "web-features:notifications"
          ],
          "support": {
            "chrome": {
              "version_added": "20"
            },
            "chrome_android": {
              "version_added": "42"
            },
            "edge": {
              "version_added": "14"
            },
            "firefox": {
              "version_added": "22",
              "notes": [
                "From Firefox 70 onwards, cannot be called from a cross-origin `iframe`.",
                "From Firefox 72 onwards, can only be called in response to a user gesture such as a `click` event."
              ]
            },
            "firefox_android": {
              "version_added": "22",
              "notes": [
                "From Firefox Android 79 onwards, cannot be called from a cross-origin `iframe`.",
                "From Firefox Android 79 onwards, can only be called in response to a user gesture such as a `click` event."
              ]
            },
            "oculus": "mirror",
            "opera": {
              "version_added": "23"
            },
            "opera_android": "mirror",
            "safari": [
              {
                "version_added": "15"
              },
              {
                "version_added": "7",
                "version_removed": "15",
                "partial_implementation": true,
                "notes": "Only supported the deprecated callback syntax."
              }
            ],
            "safari_ios": {
              "version_added": "16.4",
              "partial_implementation": true,
              "notes": "The parent `Notification` interface is undefined unless the page is a web app saved to the home screen. The app's manifest must have a non-default `display` value."
            },
            "samsunginternet_android": "mirror",
            "webview_android": {
              "version_added": false,
              "impl_url": "https://crbug.com/40443309"
            },
            "webview_ios": {
              "version_added": false
            }
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        },
        "returns_promise": {
          "__compat": {
            "description": "Returns a `Promise`",
            "spec_url": "https://notifications.spec.whatwg.org/#dom-notification-requestpermission",
            "tags": [
              "web-features:notifications"
            ],
            "support": {
              "chrome": {
                "version_added": "47"
              },
              "chrome_android": "mirror",
              "edge": "mirror",
              "firefox": {
                "version_added": "46"
              },
              "firefox_android": "mirror",
              "oculus": "mirror",
              "opera": "mirror",
              "opera_android": "mirror",
              "safari": {
                "version_added": "15"
              },
              "safari_ios": {
                "version_added": "16.4"
              },
              "samsunginternet_android": "mirror",
              "webview_android": {
                "version_added": false,
                "impl_url": "https://crbug.com/40443309"
              },
              "webview_ios": {
                "version_added": false
              }
            },
            "status": {
              "experimental": false,
              "standard_track": true,
              "deprecated": false
            }
          }
        }
      },
      "requireInteraction": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/Notification/requireInteraction",
          "spec_url": "https://notifications.spec.whatwg.org/#dom-notification-requireinteraction",
          "tags": [
            "web-features:notifications"
          ],
          "support": {
            "chrome": {
              "version_added": "47"
            },
            "chrome_android": "mirror",
            "edge": {
              "version_added": "17"
            },
            "firefox": [
              {
                "version_added": "117",
                "partial_implementation": true,
                "notes": "Only supported on Windows. Behind a flag on other operating systems."
              },
              {
                "version_added": "117",
                "flags": [
                  {
                    "type": "preference",
                    "name": "dom.webnotifications.requireinteraction.enabled",
                    "value_to_set": "true"
                  }
                ]
              }
            ],
            "firefox_android": "mirror",
            "oculus": "mirror",
            "opera": "mirror",
            "opera_android": "mirror",
            "safari": {
              "version_added": false
            },
            "safari_ios": "mirror",
            "samsunginternet_android": "mirror",
            "webview_android": {
              "version_added": false,
              "impl_url": "https://crbug.com/40443309"
            },
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "show_event": {
        "__compat": {
          "description": "`show` event",
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/Notification/show_event",
          "spec_url": "https://notifications.spec.whatwg.org/#dom-notification-onshow",
          "tags": [
            "web-features:notifications"
          ],
          "support": {
            "chrome": {
              "version_added": "20"
            },
            "chrome_android": {
              "version_added": "42"
            },
            "edge": {
              "version_added": "14"
            },
            "firefox": {
              "version_added": "22"
            },
            "firefox_android": "mirror",
            "oculus": "mirror",
            "opera": {
              "version_added": "23"
            },
            "opera_android": "mirror",
            "safari": {
              "version_added": "7"
            },
            "safari_ios": {
              "version_added": false
            },
            "samsunginternet_android": "mirror",
            "webview_android": {
              "version_added": false,
              "impl_url": "https://crbug.com/40443309"
            },
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "silent": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/Notification/silent",
          "spec_url": "https://notifications.spec.whatwg.org/#dom-notification-silent",
          "tags": [
            "web-features:notifications"
          ],
          "support": {
            "chrome": {
              "version_added": "43"
            },
            "chrome_android": "mirror",
            "edge": {
              "version_added": "17"
            },
            "firefox": {
              "version_added": "132"
            },
            "firefox_android": "mirror",
            "oculus": "mirror",
            "opera": "mirror",
            "opera_android": "mirror",
            "safari": {
              "version_added": "16.6"
            },
            "safari_ios": {
              "version_added": false
            },
            "samsunginternet_android": "mirror",
            "webview_android": {
              "version_added": false,
              "impl_url": "https://crbug.com/40443309"
            },
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "tag": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/Notification/tag",
          "spec_url": "https://notifications.spec.whatwg.org/#dom-notification-tag",
          "tags": [
            "web-features:notifications"
          ],
          "support": {
            "chrome": {
              "version_added": "20"
            },
            "chrome_android": {
              "version_added": "42"
            },
            "edge": {
              "version_added": "14"
            },
            "firefox": {
              "version_added": "26"
            },
            "firefox_android": "mirror",
            "oculus": "mirror",
            "opera": {
              "version_added": "23"
            },
            "opera_android": "mirror",
            "safari": {
              "version_added": false,
              "impl_url": "https://webkit.org/b/258922",
              "notes": "The property can be set, but has no effect."
            },
            "safari_ios": {
              "version_added": false
            },
            "samsunginternet_android": "mirror",
            "webview_android": {
              "version_added": false,
              "impl_url": "https://crbug.com/40443309"
            },
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "timestamp": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/Notification/timestamp",
          "spec_url": "https://notifications.spec.whatwg.org/#dom-notification-timestamp",
          "tags": [
            "web-features:notifications"
          ],
          "support": {
            "chrome": {
              "version_added": "50"
            },
            "chrome_android": "mirror",
            "edge": {
              "version_added": "17"
            },
            "firefox": {
              "version_added": false
            },
            "firefox_android": "mirror",
            "oculus": "mirror",
            "opera": "mirror",
            "opera_android": "mirror",
            "safari": {
              "version_added": false
            },
            "safari_ios": "mirror",
            "samsunginternet_android": "mirror",
            "webview_android": {
              "version_added": false,
              "impl_url": "https://crbug.com/40443309"
            },
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": true,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "title": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/Notification/title",
          "spec_url": "https://notifications.spec.whatwg.org/#dom-notification-title",
          "tags": [
            "web-features:notifications"
          ],
          "support": {
            "chrome": {
              "version_added": "33"
            },
            "chrome_android": {
              "version_added": "42"
            },
            "edge": {
              "version_added": "14"
            },
            "firefox": {
              "version_added": "26"
            },
            "firefox_android": "mirror",
            "oculus": "mirror",
            "opera": {
              "version_added": "23"
            },
            "opera_android": "mirror",
            "safari": {
              "version_added": "11"
            },
            "safari_ios": {
              "version_added": false
            },
            "samsunginternet_android": "mirror",
            "webview_android": {
              "version_added": false,
              "impl_url": "https://crbug.com/40443309"
            },
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "vibrate": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/Notification/vibrate",
          "spec_url": "https://notifications.spec.whatwg.org/#dom-notification-vibrate",
          "tags": [
            "web-features:notifications"
          ],
          "support": {
            "chrome": {
              "version_added": "53"
            },
            "chrome_android": "mirror",
            "edge": "mirror",
            "firefox": {
              "version_added": false
            },
            "firefox_android": "mirror",
            "oculus": "mirror",
            "opera": "mirror",
            "opera_android": "mirror",
            "safari": {
              "version_added": false
            },
            "safari_ios": "mirror",
            "samsunginternet_android": "mirror",
            "webview_android": {
              "version_added": false,
              "impl_url": "https://crbug.com/40443309"
            },
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": true,
            "standard_track": true,
            "deprecated": false
          }
        }
      }
    }
  }
}