{
  "api": {
    "MessageEvent": {
      "__compat": {
        "mdn_url": "https://developer.mozilla.org/docs/Web/API/MessageEvent",
        "support": {
          "chrome": {
            "version_added": "1"
          },
          "chrome_android": {
            "version_added": "18"
          },
          "edge": {
            "version_added": "12"
          },
          "firefox": {
            "version_added": "4"
          },
          "firefox_android": {
            "version_added": "4"
          },
          "ie": {
            "version_added": "9"
          },
          "opera": {
            "version_added": "10.6"
          },
          "opera_android": {
            "version_added": "11"
          },
          "safari": {
            "version_added": "4"
          },
          "safari_ios": {
            "version_added": "3"
          },
          "samsunginternet_android": {
            "version_added": "1.0"
          },
          "webview_android": {
            "version_added": "1"
          }
        },
        "status": {
          "experimental": false,
          "standard_track": true,
          "deprecated": false
        }
      },
      "MessageEvent": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/MessageEvent/MessageEvent",
          "description": "<code>MessageEvent()</code> constructor",
          "support": {
            "chrome": {
              "version_added": "1"
            },
            "chrome_android": {
              "version_added": "18"
            },
            "edge": {
              "version_added": "12"
            },
            "firefox": {
              "version_added": "4"
            },
            "firefox_android": {
              "version_added": null
            },
            "ie": {
              "version_added": "9"
            },
            "opera": {
              "version_added": null
            },
            "opera_android": {
              "version_added": null
            },
            "safari": {
              "version_added": "4"
            },
            "safari_ios": {
              "version_added": "3"
            },
            "samsunginternet_android": {
              "version_added": "1.0"
            },
            "webview_android": {
              "version_added": "37"
            }
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "data": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/MessageEvent/data",
          "support": {
            "chrome": {
              "version_added": "1"
            },
            "chrome_android": {
              "version_added": true
            },
            "edge": {
              "version_added": "12"
            },
            "firefox": {
              "version_added": "4"
            },
            "firefox_android": {
              "version_added": true
            },
            "ie": {
              "version_added": "9"
            },
            "opera": {
              "version_added": true
            },
            "opera_android": {
              "version_added": true
            },
            "safari": {
              "version_added": "4"
            },
            "safari_ios": {
              "version_added": "3"
            },
            "samsunginternet_android": {
              "version_added": true
            },
            "webview_android": {
              "version_added": true
            }
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "initMessageEvent": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/MessageEvent/initMessageEvent",
          "support": {
            "chrome": {
              "version_added": "1"
            },
            "chrome_android": {
              "version_added": true
            },
            "edge": {
              "version_added": "12"
            },
            "firefox": {
              "version_added": "4"
            },
            "firefox_android": {
              "version_added": true
            },
            "ie": {
              "version_added": "9"
            },
            "opera": {
              "version_added": true
            },
            "opera_android": {
              "version_added": true
            },
            "safari": {
              "version_added": "4"
            },
            "safari_ios": {
              "version_added": "3"
            },
            "samsunginternet_android": {
              "version_added": true
            },
            "webview_android": {
              "version_added": true
            }
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": true
          }
        }
      },
      "lastEventId": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/MessageEvent/lastEventId",
          "support": {
            "chrome": {
              "version_added": "1"
            },
            "chrome_android": {
              "version_added": true
            },
            "edge": {
              "version_added": "17"
            },
            "firefox": {
              "version_added": "4"
            },
            "firefox_android": {
              "version_added": true
            },
            "ie": {
              "version_added": "9"
            },
            "opera": {
              "version_added": true
            },
            "opera_android": {
              "version_added": true
            },
            "safari": {
              "version_added": "4"
            },
            "safari_ios": {
              "version_added": "3"
            },
            "samsunginternet_android": {
              "version_added": true
            },
            "webview_android": {
              "version_added": true
            }
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "origin": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/MessageEvent/origin",
          "support": {
            "chrome": {
              "version_added": "1"
            },
            "chrome_android": {
              "version_added": true
            },
            "edge": {
              "version_added": "12"
            },
            "firefox": {
              "version_added": "4"
            },
            "firefox_android": {
              "version_added": "4"
            },
            "ie": {
              "version_added": "9"
            },
            "opera": {
              "version_added": true
            },
            "opera_android": {
              "version_added": true
            },
            "safari": {
              "version_added": "4"
            },
            "safari_ios": {
              "version_added": "3"
            },
            "samsunginternet_android": {
              "version_added": true
            },
            "webview_android": {
              "version_added": true
            }
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        },
        "USVString_type": {
          "__compat": {
            "description": "Returns <code>USVString</code> (was previously <code>DOMString</code>)",
            "support": {
              "chrome": {
                "version_added": true
              },
              "chrome_android": {
                "version_added": true
              },
              "edge": {
                "version_added": "≤79"
              },
              "firefox": {
                "version_added": "55"
              },
              "firefox_android": {
                "version_added": "55"
              },
              "ie": {
                "version_added": false
              },
              "opera": {
                "version_added": null
              },
              "opera_android": {
                "version_added": null
              },
              "safari": {
                "version_added": null
              },
              "safari_ios": {
                "version_added": null
              },
              "samsunginternet_android": {
                "version_added": true
              },
              "webview_android": {
                "version_added": true
              }
            },
            "status": {
              "experimental": false,
              "standard_track": true,
              "deprecated": false
            }
          }
        }
      },
      "ports": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/MessageEvent/ports",
          "support": {
            "chrome": {
              "version_added": "1"
            },
            "chrome_android": {
              "version_added": true
            },
            "edge": {
              "version_added": "12"
            },
            "firefox": {
              "version_added": "4"
            },
            "firefox_android": {
              "version_added": true
            },
            "ie": {
              "version_added": "9"
            },
            "opera": {
              "version_added": true
            },
            "opera_android": {
              "version_added": true
            },
            "safari": {
              "version_added": "4"
            },
            "safari_ios": {
              "version_added": "3"
            },
            "samsunginternet_android": {
              "version_added": true
            },
            "webview_android": {
              "version_added": true
            }
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "source": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/MessageEvent/source",
          "support": {
            "chrome": {
              "version_added": true
            },
            "chrome_android": {
              "version_added": true
            },
            "edge": {
              "version_added": "12"
            },
            "firefox": {
              "version_added": "55"
            },
            "firefox_android": {
              "version_added": "55"
            },
            "ie": {
              "version_added": false
            },
            "opera": {
              "version_added": true
            },
            "opera_android": {
              "version_added": true
            },
            "safari": {
              "version_added": true
            },
            "safari_ios": {
              "version_added": true
            },
            "samsunginternet_android": {
              "version_added": true
            },
            "webview_android": {
              "version_added": true
            }
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        },
        "MessageEventSource_type": {
          "__compat": {
            "description": "Returns <code>MessageEventSource</code>",
            "support": {
              "chrome": {
                "version_added": true
              },
              "chrome_android": {
                "version_added": true
              },
              "edge": {
                "version_added": "≤79"
              },
              "firefox": {
                "version_added": "55"
              },
              "firefox_android": {
                "version_added": "55"
              },
              "ie": {
                "version_added": false
              },
              "opera": {
                "version_added": null
              },
              "opera_android": {
                "version_added": null
              },
              "safari": {
                "version_added": null
              },
              "safari_ios": {
                "version_added": null
              },
              "samsunginternet_android": {
                "version_added": true
              },
              "webview_android": {
                "version_added": true
              }
            },
            "status": {
              "experimental": false,
              "standard_track": true,
              "deprecated": false
            }
          }
        }
      }
    }
  }
}