{
  "api": {
    "EventTarget": {
      "__compat": {
        "mdn_url": "https://developer.mozilla.org/docs/Web/API/EventTarget",
        "spec_url": "https://dom.spec.whatwg.org/#interface-eventtarget",
        "tags": [
          "web-features:events"
        ],
        "support": {
          "bun": {
            "version_added": "1.0.0"
          },
          "chrome": {
            "version_added": "1"
          },
          "chrome_android": "mirror",
          "deno": {
            "version_added": "1.0"
          },
          "edge": {
            "version_added": "12"
          },
          "firefox": {
            "version_added": "1"
          },
          "firefox_android": "mirror",
          "ie": {
            "version_added": "6"
          },
          "nodejs": [
            {
              "version_added": "15.0.0"
            },
            {
              "version_added": "14.5.0",
              "version_removed": "15.0.0",
              "partial_implementation": true,
              "notes": "Only available as an internal instance."
            }
          ],
          "oculus": "mirror",
          "opera": {
            "version_added": "7"
          },
          "opera_android": {
            "version_added": "10.1"
          },
          "safari": {
            "version_added": "1",
            "notes": "`window.EventTarget` did not exist on versions of Safari before 10.1."
          },
          "safari_ios": {
            "version_added": "1",
            "notes": "`window.EventTarget` did not exist on versions of Safari iOS before 10.3."
          },
          "samsunginternet_android": "mirror",
          "webview_android": {
            "version_added": "1"
          },
          "webview_ios": "mirror"
        },
        "status": {
          "experimental": false,
          "standard_track": true,
          "deprecated": false
        }
      },
      "EventTarget": {
        "__compat": {
          "description": "`EventTarget()` constructor",
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/EventTarget/EventTarget",
          "spec_url": "https://dom.spec.whatwg.org/#ref-for-dom-eventtarget-eventtarget①",
          "tags": [
            "web-features:events"
          ],
          "support": {
            "bun": {
              "version_added": "1.0.0"
            },
            "chrome": {
              "version_added": "64"
            },
            "chrome_android": "mirror",
            "deno": {
              "version_added": "1.0"
            },
            "edge": "mirror",
            "firefox": {
              "version_added": "59"
            },
            "firefox_android": "mirror",
            "nodejs": {
              "version_added": "14.5.0"
            },
            "oculus": "mirror",
            "opera": "mirror",
            "opera_android": "mirror",
            "safari": {
              "version_added": "14"
            },
            "safari_ios": "mirror",
            "samsunginternet_android": "mirror",
            "webview_android": "mirror",
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "addEventListener": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/EventTarget/addEventListener",
          "spec_url": "https://dom.spec.whatwg.org/#ref-for-dom-eventtarget-addeventlistener③",
          "tags": [
            "web-features:events"
          ],
          "support": {
            "bun": {
              "version_added": "1.0.0"
            },
            "chrome": {
              "version_added": "1",
              "notes": "Before Chrome 49, the `type` and `listener` parameters were optional."
            },
            "chrome_android": "mirror",
            "deno": {
              "version_added": "1.0"
            },
            "edge": {
              "version_added": "12"
            },
            "firefox": {
              "version_added": "1"
            },
            "firefox_android": "mirror",
            "ie": [
              {
                "version_added": "9"
              },
              {
                "alternative_name": "attachEvent",
                "version_added": "6",
                "version_removed": "11",
                "notes": "Older versions of IE supported an equivalent, proprietary `EventTarget.attachEvent()` method."
              }
            ],
            "nodejs": {
              "version_added": "14.5.0"
            },
            "oculus": "mirror",
            "opera": {
              "version_added": "7"
            },
            "opera_android": {
              "version_added": "10.1"
            },
            "safari": {
              "version_added": "1"
            },
            "safari_ios": "mirror",
            "samsunginternet_android": "mirror",
            "webview_android": {
              "version_added": "1",
              "notes": "Before Chrome 49, the `type` and `listener` parameters were optional."
            },
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        },
        "options_parameter": {
          "__compat": {
            "description": "Form with `options` object supported (third parameter can be either options or a `Boolean`, for backwards compatibility)",
            "tags": [
              "web-features:events"
            ],
            "support": {
              "bun": {
                "version_added": "1.0.0"
              },
              "chrome": {
                "version_added": "49"
              },
              "chrome_android": "mirror",
              "deno": {
                "version_added": "1.0"
              },
              "edge": {
                "version_added": "16"
              },
              "firefox": {
                "version_added": "49"
              },
              "firefox_android": "mirror",
              "nodejs": {
                "version_added": "14.5.0"
              },
              "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
            }
          },
          "options_capture_parameter": {
            "__compat": {
              "description": "`options.capture` parameter",
              "spec_url": "https://dom.spec.whatwg.org/#dom-eventlisteneroptions-capture",
              "tags": [
                "web-features:events"
              ],
              "support": {
                "bun": {
                  "version_added": "1.0.0"
                },
                "chrome": {
                  "version_added": "49"
                },
                "chrome_android": "mirror",
                "deno": {
                  "version_added": "1.0"
                },
                "edge": {
                  "version_added": "16"
                },
                "firefox": {
                  "version_added": "49"
                },
                "firefox_android": "mirror",
                "nodejs": {
                  "version_added": "14.5.0"
                },
                "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
              }
            }
          },
          "options_once_parameter": {
            "__compat": {
              "description": "`options.once` parameter",
              "spec_url": "https://dom.spec.whatwg.org/#dom-addeventlisteneroptions-once",
              "tags": [
                "web-features:events"
              ],
              "support": {
                "bun": {
                  "version_added": "1.0.0"
                },
                "chrome": {
                  "version_added": "55"
                },
                "chrome_android": "mirror",
                "deno": {
                  "version_added": "1.0"
                },
                "edge": {
                  "version_added": "16"
                },
                "firefox": {
                  "version_added": "50"
                },
                "firefox_android": "mirror",
                "nodejs": {
                  "version_added": "14.5.0"
                },
                "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
              }
            }
          },
          "options_passive_parameter": {
            "__compat": {
              "description": "`options.passive` parameter",
              "spec_url": "https://dom.spec.whatwg.org/#dom-addeventlisteneroptions-passive",
              "tags": [
                "web-features:events"
              ],
              "support": {
                "bun": {
                  "version_added": "1.0.0"
                },
                "chrome": {
                  "version_added": "51"
                },
                "chrome_android": "mirror",
                "deno": {
                  "version_added": "1.0"
                },
                "edge": {
                  "version_added": "16"
                },
                "firefox": {
                  "version_added": "49"
                },
                "firefox_android": "mirror",
                "nodejs": {
                  "version_added": "14.5.0"
                },
                "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
              }
            }
          },
          "options_passive_parameter_default_true_touch": {
            "__compat": {
              "description": "`options.passive` parameter defaults to `true` for `touchstart` and `touchmove` events",
              "tags": [
                "web-features:events"
              ],
              "support": {
                "chrome": {
                  "version_added": "55"
                },
                "chrome_android": "mirror",
                "edge": "mirror",
                "firefox": {
                  "version_added": "61"
                },
                "firefox_android": "mirror",
                "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
              }
            }
          },
          "options_passive_parameter_default_true_wheel": {
            "__compat": {
              "description": "`options.passive` parameter defaults to `true` for `wheel` and `mousewheel` events",
              "tags": [
                "web-features:events"
              ],
              "support": {
                "chrome": {
                  "version_added": "73"
                },
                "chrome_android": "mirror",
                "deno": {
                  "version_added": false
                },
                "edge": "mirror",
                "firefox": {
                  "version_added": "84"
                },
                "firefox_android": "mirror",
                "nodejs": {
                  "version_added": false
                },
                "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
              }
            }
          },
          "options_signal_parameter": {
            "__compat": {
              "description": "`options.signal` parameter",
              "spec_url": "https://dom.spec.whatwg.org/#dom-addeventlisteneroptions-signal",
              "tags": [
                "web-features:events"
              ],
              "support": {
                "bun": {
                  "version_added": "1.0.0"
                },
                "chrome": {
                  "version_added": "90"
                },
                "chrome_android": "mirror",
                "deno": {
                  "version_added": "1.0"
                },
                "edge": "mirror",
                "firefox": {
                  "version_added": "86"
                },
                "firefox_android": "mirror",
                "nodejs": {
                  "version_added": "15.4.0"
                },
                "oculus": "mirror",
                "opera": "mirror",
                "opera_android": "mirror",
                "safari": {
                  "version_added": "15"
                },
                "safari_ios": "mirror",
                "samsunginternet_android": "mirror",
                "webview_android": "mirror",
                "webview_ios": "mirror"
              },
              "status": {
                "experimental": false,
                "standard_track": true,
                "deprecated": false
              }
            }
          }
        },
        "useCapture_parameter_optional": {
          "__compat": {
            "description": "`useCapture` parameter is optional",
            "tags": [
              "web-features:events"
            ],
            "support": {
              "bun": {
                "version_added": "1.0.0"
              },
              "chrome": {
                "version_added": "1"
              },
              "chrome_android": "mirror",
              "deno": {
                "version_added": "1.0"
              },
              "edge": {
                "version_added": "12"
              },
              "firefox": {
                "version_added": "6"
              },
              "firefox_android": "mirror",
              "ie": {
                "version_added": "9"
              },
              "nodejs": {
                "version_added": "14.5.0"
              },
              "oculus": "mirror",
              "opera": {
                "version_added": "11.6"
              },
              "opera_android": {
                "version_added": "12"
              },
              "safari": {
                "version_added": "1"
              },
              "safari_ios": "mirror",
              "samsunginternet_android": "mirror",
              "webview_android": "mirror",
              "webview_ios": "mirror"
            },
            "status": {
              "experimental": false,
              "standard_track": true,
              "deprecated": false
            }
          }
        }
      },
      "dispatchEvent": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/EventTarget/dispatchEvent",
          "spec_url": "https://dom.spec.whatwg.org/#ref-for-dom-eventtarget-dispatchevent③",
          "tags": [
            "web-features:events"
          ],
          "support": {
            "bun": {
              "version_added": "1.0.0"
            },
            "chrome": {
              "version_added": "4"
            },
            "chrome_android": "mirror",
            "deno": {
              "version_added": "1.0"
            },
            "edge": {
              "version_added": "12"
            },
            "firefox": {
              "version_added": "2"
            },
            "firefox_android": "mirror",
            "ie": [
              {
                "version_added": "9"
              },
              {
                "alternative_name": "fireEvent",
                "version_added": "6",
                "version_removed": "11",
                "notes": "Older versions of IE supported an equivalent, proprietary `EventTarget.fireEvent()` method."
              }
            ],
            "nodejs": {
              "version_added": "14.5.0"
            },
            "oculus": "mirror",
            "opera": {
              "version_added": "9"
            },
            "opera_android": {
              "version_added": "10.1"
            },
            "safari": {
              "version_added": "3.1"
            },
            "safari_ios": {
              "version_added": "3"
            },
            "samsunginternet_android": "mirror",
            "webview_android": {
              "version_added": "4"
            },
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "removeEventListener": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/EventTarget/removeEventListener",
          "spec_url": "https://dom.spec.whatwg.org/#ref-for-dom-eventtarget-removeeventlistener②",
          "tags": [
            "web-features:events"
          ],
          "support": {
            "bun": {
              "version_added": "1.0.0"
            },
            "chrome": {
              "version_added": "1"
            },
            "chrome_android": "mirror",
            "deno": {
              "version_added": "1.0"
            },
            "edge": {
              "version_added": "12"
            },
            "firefox": {
              "version_added": "1"
            },
            "firefox_android": "mirror",
            "ie": [
              {
                "version_added": "9"
              },
              {
                "alternative_name": "detachEvent",
                "version_added": "6",
                "version_removed": "11",
                "notes": "Older versions of IE supported an equivalent, proprietary `EventTarget.detachEvent()` method."
              }
            ],
            "nodejs": {
              "version_added": "14.5.0"
            },
            "oculus": "mirror",
            "opera": {
              "version_added": "7"
            },
            "opera_android": {
              "version_added": "10.1"
            },
            "safari": {
              "version_added": "1"
            },
            "safari_ios": "mirror",
            "samsunginternet_android": "mirror",
            "webview_android": "mirror",
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        },
        "options_parameter": {
          "__compat": {
            "description": "Form with `options` object supported (third parameter can be either options or a `Boolean`, for backwards compatibility)",
            "tags": [
              "web-features:events"
            ],
            "support": {
              "bun": {
                "version_added": "1.0.0"
              },
              "chrome": {
                "version_added": "49"
              },
              "chrome_android": "mirror",
              "deno": {
                "version_added": "1.0"
              },
              "edge": {
                "version_added": "16"
              },
              "firefox": {
                "version_added": "49"
              },
              "firefox_android": "mirror",
              "nodejs": {
                "version_added": "14.5.0"
              },
              "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
            }
          }
        },
        "useCapture_parameter_optional": {
          "__compat": {
            "description": "`useCapture` parameter is optional",
            "tags": [
              "web-features:events"
            ],
            "support": {
              "bun": {
                "version_added": "1.0.0"
              },
              "chrome": {
                "version_added": "1"
              },
              "chrome_android": "mirror",
              "deno": {
                "version_added": "1.0"
              },
              "edge": {
                "version_added": "12"
              },
              "firefox": {
                "version_added": "6"
              },
              "firefox_android": "mirror",
              "ie": {
                "version_added": "9"
              },
              "nodejs": {
                "version_added": "14.5.0"
              },
              "oculus": "mirror",
              "opera": {
                "version_added": "11.6"
              },
              "opera_android": {
                "version_added": "12"
              },
              "safari": {
                "version_added": "1"
              },
              "safari_ios": "mirror",
              "samsunginternet_android": "mirror",
              "webview_android": "mirror",
              "webview_ios": "mirror"
            },
            "status": {
              "experimental": false,
              "standard_track": true,
              "deprecated": false
            }
          }
        }
      },
      "when": {
        "__compat": {
          "spec_url": "https://wicg.github.io/observable/#dom-eventtarget-when",
          "tags": [
            "web-features:observable"
          ],
          "support": {
            "chrome": {
              "version_added": "135"
            },
            "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": "mirror",
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": true,
            "standard_track": true,
            "deprecated": false
          }
        }
      }
    }
  }
}