{
  "api": {
    "PushSubscriptionChangeEvent": {
      "__compat": {
        "spec_url": "https://w3c.github.io/push-api/#pushsubscriptionchangeevent-interface",
        "tags": [
          "web-features:push"
        ],
        "support": {
          "chrome": {
            "version_added": "138"
          },
          "chrome_android": "mirror",
          "edge": {
            "version_added": "17",
            "version_removed": "79"
          },
          "firefox": {
            "version_added": "137",
            "notes": "Before Firefox 137, The `pushsubscriptionchange` event is fired, but does not have the `oldSubscription` and `newSubscription` properties. See [bug 1635524](https://bugzil.la/1635524)."
          },
          "firefox_android": "mirror",
          "oculus": "mirror",
          "opera": "mirror",
          "opera_android": "mirror",
          "safari": {
            "version_added": "16",
            "notes": "Notifications are supported on macOS Ventura and later."
          },
          "safari_ios": {
            "version_added": "16.4",
            "notes": "Notifications are supported in web apps saved to the home screen."
          },
          "samsunginternet_android": "mirror",
          "webview_android": "mirror",
          "webview_ios": {
            "version_added": false,
            "notes": "Notifications are supported in web apps saved to the home screen."
          }
        },
        "status": {
          "experimental": false,
          "standard_track": true,
          "deprecated": false
        }
      },
      "PushSubscriptionChangeEvent": {
        "__compat": {
          "description": "`PushSubscriptionChangeEvent()` constructor",
          "spec_url": "https://w3c.github.io/push-api/#dom-pushsubscriptionchangeevent-constructor",
          "tags": [
            "web-features:push"
          ],
          "support": {
            "chrome": {
              "version_added": "138"
            },
            "chrome_android": "mirror",
            "edge": {
              "version_added": "17",
              "version_removed": "79"
            },
            "firefox": {
              "version_added": "137"
            },
            "firefox_android": "mirror",
            "oculus": "mirror",
            "opera": "mirror",
            "opera_android": "mirror",
            "safari": {
              "version_added": "16.1"
            },
            "safari_ios": {
              "version_added": "16.4",
              "notes": "Notifications are supported in web apps saved to the home screen."
            },
            "samsunginternet_android": "mirror",
            "webview_android": "mirror",
            "webview_ios": {
              "version_added": false,
              "notes": "Notifications are supported in web apps saved to the home screen."
            }
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "newSubscription": {
        "__compat": {
          "spec_url": "https://w3c.github.io/push-api/#dom-pushsubscriptionchangeevent-newsubscription",
          "tags": [
            "web-features:push"
          ],
          "support": {
            "chrome": {
              "version_added": "138"
            },
            "chrome_android": "mirror",
            "edge": {
              "version_added": "17",
              "version_removed": "79"
            },
            "firefox": {
              "version_added": "137"
            },
            "firefox_android": "mirror",
            "oculus": "mirror",
            "opera": "mirror",
            "opera_android": "mirror",
            "safari": {
              "version_added": "16",
              "notes": "Notifications are supported on macOS Ventura and later."
            },
            "safari_ios": {
              "version_added": "16.4",
              "notes": "Notifications are supported in web apps saved to the home screen."
            },
            "samsunginternet_android": "mirror",
            "webview_android": "mirror",
            "webview_ios": {
              "version_added": false,
              "notes": "Notifications are supported in web apps saved to the home screen."
            }
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "oldSubscription": {
        "__compat": {
          "spec_url": "https://w3c.github.io/push-api/#dom-pushsubscriptionchangeevent-oldsubscription",
          "tags": [
            "web-features:push"
          ],
          "support": {
            "chrome": {
              "version_added": "138"
            },
            "chrome_android": "mirror",
            "edge": {
              "version_added": "17",
              "version_removed": "79"
            },
            "firefox": {
              "version_added": "137"
            },
            "firefox_android": "mirror",
            "oculus": "mirror",
            "opera": "mirror",
            "opera_android": "mirror",
            "safari": {
              "version_added": "16",
              "notes": "Notifications are supported on macOS Ventura and later."
            },
            "safari_ios": {
              "version_added": "16.4",
              "notes": "Notifications are supported in web apps saved to the home screen."
            },
            "samsunginternet_android": "mirror",
            "webview_android": "mirror",
            "webview_ios": {
              "version_added": false,
              "notes": "Notifications are supported in web apps saved to the home screen."
            }
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      }
    }
  }
}