{
  "api": {
    "XMLHttpRequest": {
      "__compat": {
        "mdn_url": "https://developer.mozilla.org/docs/Web/API/XMLHttpRequest",
        "spec_url": "https://xhr.spec.whatwg.org/#interface-xmlhttprequest",
        "tags": [
          "web-features:xhr"
        ],
        "support": {
          "chrome": {
            "version_added": "1"
          },
          "chrome_android": "mirror",
          "edge": {
            "version_added": "12"
          },
          "firefox": {
            "version_added": "1"
          },
          "firefox_android": "mirror",
          "ie": [
            {
              "version_added": "7"
            },
            {
              "version_added": "5",
              "version_removed": "7",
              "partial_implementation": true,
              "notes": "Implemented via `ActiveXObject('Microsoft.XMLHTTP')`"
            }
          ],
          "oculus": "mirror",
          "opera": {
            "version_added": "8"
          },
          "opera_android": {
            "version_added": "10.1"
          },
          "safari": {
            "version_added": "1.2"
          },
          "safari_ios": "mirror",
          "samsunginternet_android": "mirror",
          "webview_android": {
            "version_added": "3"
          },
          "webview_ios": "mirror"
        },
        "status": {
          "experimental": false,
          "standard_track": true,
          "deprecated": false
        }
      },
      "XMLHttpRequest": {
        "__compat": {
          "description": "`XMLHttpRequest()` constructor",
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/XMLHttpRequest/XMLHttpRequest",
          "spec_url": "https://xhr.spec.whatwg.org/#dom-xmlhttprequest",
          "tags": [
            "web-features:xhr"
          ],
          "support": {
            "chrome": {
              "version_added": "1"
            },
            "chrome_android": "mirror",
            "edge": {
              "version_added": "12"
            },
            "firefox": {
              "version_added": "1"
            },
            "firefox_android": "mirror",
            "ie": {
              "version_added": "7"
            },
            "oculus": "mirror",
            "opera": {
              "version_added": "≤12.1"
            },
            "opera_android": {
              "version_added": "≤12.1"
            },
            "safari": {
              "version_added": "3"
            },
            "safari_ios": {
              "version_added": "1"
            },
            "samsunginternet_android": "mirror",
            "webview_android": "mirror",
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "worker_support": {
        "__compat": {
          "description": "Available in workers",
          "spec_url": "https://xhr.spec.whatwg.org/#interface-xmlhttprequest",
          "tags": [
            "web-features:xhr"
          ],
          "support": {
            "chrome": {
              "version_added": "4"
            },
            "chrome_android": "mirror",
            "edge": {
              "version_added": "12"
            },
            "firefox": {
              "version_added": "3.5"
            },
            "firefox_android": "mirror",
            "ie": {
              "version_added": "10"
            },
            "oculus": "mirror",
            "opera": {
              "version_added": "10.6"
            },
            "opera_android": {
              "version_added": "11"
            },
            "safari": {
              "version_added": "4"
            },
            "safari_ios": {
              "version_added": "5"
            },
            "samsunginternet_android": "mirror",
            "webview_android": {
              "version_added": "4"
            },
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "abort": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/XMLHttpRequest/abort",
          "spec_url": "https://xhr.spec.whatwg.org/#the-abort()-method",
          "tags": [
            "web-features:xhr"
          ],
          "support": {
            "chrome": {
              "version_added": "1"
            },
            "chrome_android": "mirror",
            "edge": {
              "version_added": "12"
            },
            "firefox": {
              "version_added": "1"
            },
            "firefox_android": "mirror",
            "ie": {
              "version_added": "5"
            },
            "oculus": "mirror",
            "opera": {
              "version_added": "≤12.1"
            },
            "opera_android": {
              "version_added": "≤12.1"
            },
            "safari": {
              "version_added": "1.2"
            },
            "safari_ios": "mirror",
            "samsunginternet_android": "mirror",
            "webview_android": "mirror",
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "abort_event": {
        "__compat": {
          "description": "`abort` event",
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/XMLHttpRequestEventTarget/abort_event",
          "spec_url": [
            "https://xhr.spec.whatwg.org/#event-xhr-abort",
            "https://xhr.spec.whatwg.org/#handler-xhr-onabort"
          ],
          "tags": [
            "web-features:xhr"
          ],
          "support": {
            "chrome": {
              "version_added": "1"
            },
            "chrome_android": "mirror",
            "edge": {
              "version_added": "12"
            },
            "firefox": {
              "version_added": "3.5"
            },
            "firefox_android": "mirror",
            "ie": {
              "version_added": "10"
            },
            "oculus": "mirror",
            "opera": {
              "version_added": "≤12.1"
            },
            "opera_android": {
              "version_added": "≤12.1"
            },
            "safari": {
              "version_added": "1.3"
            },
            "safari_ios": "mirror",
            "samsunginternet_android": "mirror",
            "webview_android": "mirror",
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "authorization_removed_cross_origin": {
        "__compat": {
          "description": "`Authorization` header removed from cross-origin redirects",
          "spec_url": "https://fetch.spec.whatwg.org/#http-redirect-fetch",
          "tags": [
            "web-features:xhr"
          ],
          "support": {
            "chrome": {
              "version_added": false
            },
            "chrome_android": "mirror",
            "deno": {
              "version_added": false
            },
            "edge": "mirror",
            "firefox": {
              "version_added": "111"
            },
            "firefox_android": "mirror",
            "oculus": "mirror",
            "opera": "mirror",
            "opera_android": "mirror",
            "safari": {
              "version_added": "16.1"
            },
            "safari_ios": "mirror",
            "samsunginternet_android": "mirror",
            "webview_android": "mirror",
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "error_event": {
        "__compat": {
          "description": "`error` event",
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/XMLHttpRequestEventTarget/error_event",
          "spec_url": [
            "https://xhr.spec.whatwg.org/#event-xhr-error",
            "https://xhr.spec.whatwg.org/#handler-xhr-onerror"
          ],
          "tags": [
            "web-features:xhr"
          ],
          "support": {
            "chrome": {
              "version_added": "1"
            },
            "chrome_android": "mirror",
            "edge": {
              "version_added": "12"
            },
            "firefox": {
              "version_added": "1"
            },
            "firefox_android": "mirror",
            "ie": {
              "version_added": "10"
            },
            "oculus": "mirror",
            "opera": {
              "version_added": "≤12.1"
            },
            "opera_android": {
              "version_added": "≤12.1"
            },
            "safari": {
              "version_added": "1.3"
            },
            "safari_ios": "mirror",
            "samsunginternet_android": "mirror",
            "webview_android": "mirror",
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "getAllResponseHeaders": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/XMLHttpRequest/getAllResponseHeaders",
          "spec_url": "https://xhr.spec.whatwg.org/#the-getallresponseheaders()-method",
          "tags": [
            "web-features:xhr"
          ],
          "support": {
            "chrome": {
              "version_added": "1"
            },
            "chrome_android": "mirror",
            "edge": {
              "version_added": "12"
            },
            "firefox": {
              "version_added": "1",
              "notes": "Starting from Firefox 49, empty headers are returned as empty strings in case the preference `network.http.keep_empty_response_headers_as_empty_string` is set to `true`, defaulting to `false`. Before Firefox 49 empty headers had been ignored. Since Firefox 50 the preference defaults to `true`."
            },
            "firefox_android": "mirror",
            "ie": {
              "version_added": "5"
            },
            "oculus": "mirror",
            "opera": {
              "version_added": "≤12.1"
            },
            "opera_android": {
              "version_added": "≤12.1"
            },
            "safari": {
              "version_added": "1.2"
            },
            "safari_ios": "mirror",
            "samsunginternet_android": "mirror",
            "webview_android": "mirror",
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        },
        "header_names_lowercase": {
          "__compat": {
            "description": "Header names returned in all lower case",
            "spec_url": "https://fetch.spec.whatwg.org/#convert-header-names-to-a-sorted-lowercase-set",
            "tags": [
              "web-features:xhr"
            ],
            "support": {
              "chrome": {
                "version_added": "60"
              },
              "chrome_android": "mirror",
              "edge": "mirror",
              "firefox": {
                "version_added": "64"
              },
              "firefox_android": "mirror",
              "oculus": "mirror",
              "opera": "mirror",
              "opera_android": "mirror",
              "safari": {
                "version_added": "11"
              },
              "safari_ios": "mirror",
              "samsunginternet_android": "mirror",
              "webview_android": "mirror",
              "webview_ios": "mirror"
            },
            "status": {
              "experimental": false,
              "standard_track": true,
              "deprecated": false
            }
          }
        }
      },
      "getResponseHeader": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/XMLHttpRequest/getResponseHeader",
          "spec_url": "https://xhr.spec.whatwg.org/#dom-xmlhttprequest-getresponseheader",
          "tags": [
            "web-features:xhr"
          ],
          "support": {
            "chrome": {
              "version_added": "1"
            },
            "chrome_android": "mirror",
            "edge": {
              "version_added": "12"
            },
            "firefox": {
              "version_added": "1",
              "notes": "Starting from Firefox 49, empty headers are returned as empty strings in case the preference `network.http.keep_empty_response_headers_as_empty_string` is set to `true`, defaulting to `false`. Before Firefox 49 empty headers had been ignored. Since Firefox 50 the preference defaults to `true`."
            },
            "firefox_android": "mirror",
            "ie": {
              "version_added": "5"
            },
            "oculus": "mirror",
            "opera": {
              "version_added": "8"
            },
            "opera_android": {
              "version_added": "10.1"
            },
            "safari": {
              "version_added": "1.2"
            },
            "safari_ios": "mirror",
            "samsunginternet_android": "mirror",
            "webview_android": "mirror",
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "load_event": {
        "__compat": {
          "description": "`load` event",
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/XMLHttpRequestEventTarget/load_event",
          "spec_url": [
            "https://xhr.spec.whatwg.org/#event-xhr-load",
            "https://xhr.spec.whatwg.org/#handler-xhr-onload"
          ],
          "tags": [
            "web-features:xhr"
          ],
          "support": {
            "chrome": {
              "version_added": "1"
            },
            "chrome_android": "mirror",
            "edge": {
              "version_added": "12"
            },
            "firefox": {
              "version_added": "1"
            },
            "firefox_android": "mirror",
            "ie": {
              "version_added": "9"
            },
            "oculus": "mirror",
            "opera": {
              "version_added": "≤12.1"
            },
            "opera_android": {
              "version_added": "≤12.1"
            },
            "safari": {
              "version_added": "1.3"
            },
            "safari_ios": "mirror",
            "samsunginternet_android": "mirror",
            "webview_android": "mirror",
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "loadend_event": {
        "__compat": {
          "description": "`loadend` event",
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/XMLHttpRequestEventTarget/loadend_event",
          "spec_url": [
            "https://xhr.spec.whatwg.org/#event-xhr-loadend",
            "https://xhr.spec.whatwg.org/#handler-xhr-onloadend"
          ],
          "tags": [
            "web-features:xhr"
          ],
          "support": {
            "chrome": {
              "version_added": "18"
            },
            "chrome_android": "mirror",
            "edge": {
              "version_added": "12"
            },
            "firefox": {
              "version_added": "5"
            },
            "firefox_android": "mirror",
            "ie": {
              "version_added": "10"
            },
            "oculus": "mirror",
            "opera": {
              "version_added": "≤12.1"
            },
            "opera_android": {
              "version_added": "≤12.1"
            },
            "safari": {
              "version_added": "4"
            },
            "safari_ios": {
              "version_added": "3"
            },
            "samsunginternet_android": "mirror",
            "webview_android": "mirror",
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "loadstart_event": {
        "__compat": {
          "description": "`loadstart` event",
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/XMLHttpRequestEventTarget/loadstart_event",
          "spec_url": [
            "https://xhr.spec.whatwg.org/#event-xhr-loadstart",
            "https://xhr.spec.whatwg.org/#handler-xhr-onloadstart"
          ],
          "tags": [
            "web-features:xhr"
          ],
          "support": {
            "chrome": {
              "version_added": "1"
            },
            "chrome_android": "mirror",
            "edge": {
              "version_added": "12"
            },
            "firefox": {
              "version_added": "3.5"
            },
            "firefox_android": "mirror",
            "ie": {
              "version_added": "10"
            },
            "oculus": "mirror",
            "opera": {
              "version_added": "≤12.1"
            },
            "opera_android": {
              "version_added": "≤12.1"
            },
            "safari": {
              "version_added": "1.3"
            },
            "safari_ios": "mirror",
            "samsunginternet_android": "mirror",
            "webview_android": "mirror",
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "open": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/XMLHttpRequest/open",
          "spec_url": "https://xhr.spec.whatwg.org/#the-open()-method",
          "tags": [
            "web-features:xhr"
          ],
          "support": {
            "chrome": {
              "version_added": "1"
            },
            "chrome_android": "mirror",
            "edge": {
              "version_added": "12"
            },
            "firefox": {
              "version_added": "1",
              "notes": "Starting in Firefox 30, synchronous requests on the main thread have been deprecated due to their negative impact on performance and the user experience. Therefore, the `async` parameter may not be `false` except in a `Worker`."
            },
            "firefox_android": "mirror",
            "ie": {
              "version_added": "5"
            },
            "oculus": "mirror",
            "opera": {
              "version_added": "8"
            },
            "opera_android": {
              "version_added": "10.1"
            },
            "safari": {
              "version_added": "1.2"
            },
            "safari_ios": "mirror",
            "samsunginternet_android": "mirror",
            "webview_android": "mirror",
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "overrideMimeType": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/XMLHttpRequest/overrideMimeType",
          "spec_url": "https://xhr.spec.whatwg.org/#the-overridemimetype()-method",
          "tags": [
            "web-features:xhr"
          ],
          "support": {
            "chrome": {
              "version_added": "1"
            },
            "chrome_android": "mirror",
            "edge": {
              "version_added": "12"
            },
            "firefox": {
              "version_added": "1"
            },
            "firefox_android": "mirror",
            "ie": [
              {
                "version_added": "11"
              },
              {
                "version_added": "5",
                "version_removed": "11",
                "partial_implementation": true,
                "notes": "Implemented via `ActiveXObject`"
              }
            ],
            "oculus": "mirror",
            "opera": {
              "version_added": "≤12.1"
            },
            "opera_android": {
              "version_added": "≤12.1"
            },
            "safari": {
              "version_added": "1.2"
            },
            "safari_ios": "mirror",
            "samsunginternet_android": "mirror",
            "webview_android": "mirror",
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "progress_event": {
        "__compat": {
          "description": "`progress` event",
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/XMLHttpRequestEventTarget/progress_event",
          "spec_url": [
            "https://xhr.spec.whatwg.org/#event-xhr-progress",
            "https://xhr.spec.whatwg.org/#handler-xhr-onprogress"
          ],
          "tags": [
            "web-features:xhr"
          ],
          "support": {
            "chrome": {
              "version_added": "1"
            },
            "chrome_android": "mirror",
            "edge": {
              "version_added": "12"
            },
            "firefox": {
              "version_added": "1"
            },
            "firefox_android": "mirror",
            "ie": {
              "version_added": "10"
            },
            "oculus": "mirror",
            "opera": {
              "version_added": "≤12.1"
            },
            "opera_android": {
              "version_added": "≤12.1"
            },
            "safari": {
              "version_added": "3"
            },
            "safari_ios": {
              "version_added": "1"
            },
            "samsunginternet_android": "mirror",
            "webview_android": "mirror",
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "readyState": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/XMLHttpRequest/readyState",
          "spec_url": "https://xhr.spec.whatwg.org/#states",
          "tags": [
            "web-features:xhr"
          ],
          "support": {
            "chrome": {
              "version_added": "1"
            },
            "chrome_android": "mirror",
            "edge": {
              "version_added": "12"
            },
            "firefox": {
              "version_added": "1"
            },
            "firefox_android": "mirror",
            "ie": {
              "version_added": "7"
            },
            "oculus": "mirror",
            "opera": {
              "version_added": "8"
            },
            "opera_android": {
              "version_added": "10.1"
            },
            "safari": {
              "version_added": "1.2"
            },
            "safari_ios": "mirror",
            "samsunginternet_android": "mirror",
            "webview_android": "mirror",
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "readystatechange_event": {
        "__compat": {
          "description": "`readystatechange` event",
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/XMLHttpRequest/readystatechange_event",
          "spec_url": [
            "https://xhr.spec.whatwg.org/#event-xhr-readystatechange",
            "https://xhr.spec.whatwg.org/#handler-xhr-onreadystatechange"
          ],
          "tags": [
            "web-features:xhr"
          ],
          "support": {
            "chrome": {
              "version_added": "1"
            },
            "chrome_android": "mirror",
            "edge": {
              "version_added": "12"
            },
            "firefox": {
              "version_added": "1"
            },
            "firefox_android": "mirror",
            "ie": {
              "version_added": "5"
            },
            "oculus": "mirror",
            "opera": {
              "version_added": "9"
            },
            "opera_android": {
              "version_added": "10.1"
            },
            "safari": {
              "version_added": "1.2"
            },
            "safari_ios": "mirror",
            "samsunginternet_android": "mirror",
            "webview_android": "mirror",
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "response": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/XMLHttpRequest/response",
          "spec_url": "https://xhr.spec.whatwg.org/#the-response-attribute",
          "tags": [
            "web-features:xhr"
          ],
          "support": {
            "chrome": {
              "version_added": "9"
            },
            "chrome_android": "mirror",
            "edge": {
              "version_added": "12"
            },
            "firefox": {
              "version_added": "6"
            },
            "firefox_android": "mirror",
            "ie": {
              "version_added": "10"
            },
            "oculus": "mirror",
            "opera": {
              "version_added": "11.6"
            },
            "opera_android": {
              "version_added": "12"
            },
            "safari": {
              "version_added": "5.1"
            },
            "safari_ios": "mirror",
            "samsunginternet_android": "mirror",
            "webview_android": {
              "version_added": "3"
            },
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "responseText": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/XMLHttpRequest/responseText",
          "spec_url": "https://xhr.spec.whatwg.org/#the-responsetext-attribute",
          "tags": [
            "web-features:xhr"
          ],
          "support": {
            "chrome": {
              "version_added": "1"
            },
            "chrome_android": "mirror",
            "edge": {
              "version_added": "12"
            },
            "firefox": {
              "version_added": "1"
            },
            "firefox_android": "mirror",
            "ie": {
              "version_added": "5",
              "notes": "Before Internet Explorer 10, the value of `XMLHttpRequest.responseText` could be read only once the request was complete."
            },
            "oculus": "mirror",
            "opera": {
              "version_added": "8"
            },
            "opera_android": {
              "version_added": "10.1"
            },
            "safari": {
              "version_added": "1.2"
            },
            "safari_ios": "mirror",
            "samsunginternet_android": "mirror",
            "webview_android": "mirror",
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "responseType": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/XMLHttpRequest/responseType",
          "spec_url": "https://xhr.spec.whatwg.org/#the-responsetype-attribute",
          "tags": [
            "web-features:xhr"
          ],
          "support": {
            "chrome": {
              "version_added": "31"
            },
            "chrome_android": "mirror",
            "edge": {
              "version_added": "12"
            },
            "firefox": {
              "version_added": "6"
            },
            "firefox_android": {
              "version_added": "50"
            },
            "ie": {
              "version_added": "10"
            },
            "oculus": "mirror",
            "opera": [
              {
                "version_added": "18"
              },
              {
                "version_added": "12",
                "version_removed": "15"
              }
            ],
            "opera_android": [
              {
                "version_added": "18"
              },
              {
                "version_added": "12",
                "version_removed": "14"
              }
            ],
            "safari": {
              "version_added": "5.1"
            },
            "safari_ios": "mirror",
            "samsunginternet_android": "mirror",
            "webview_android": "mirror",
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        },
        "arraybuffer_value": {
          "__compat": {
            "mdn_url": "https://developer.mozilla.org/docs/Web/API/XMLHttpRequest/responseType#arraybuffer",
            "spec_url": "https://xhr.spec.whatwg.org/#dom-xmlhttprequestresponsetype-arraybuffer",
            "tags": [
              "web-features:xhr"
            ],
            "support": {
              "chrome": {
                "version_added": "31"
              },
              "chrome_android": "mirror",
              "edge": {
                "version_added": "12"
              },
              "firefox": {
                "version_added": "6"
              },
              "firefox_android": {
                "version_added": "50"
              },
              "ie": {
                "version_added": "10"
              },
              "oculus": "mirror",
              "opera": [
                {
                  "version_added": "18"
                },
                {
                  "version_added": "12",
                  "version_removed": "15"
                }
              ],
              "opera_android": [
                {
                  "version_added": "18"
                },
                {
                  "version_added": "12",
                  "version_removed": "14"
                }
              ],
              "safari": {
                "version_added": "5.1"
              },
              "safari_ios": "mirror",
              "samsunginternet_android": "mirror",
              "webview_android": "mirror",
              "webview_ios": "mirror"
            },
            "status": {
              "experimental": false,
              "standard_track": true,
              "deprecated": false
            }
          }
        },
        "blob_value": {
          "__compat": {
            "mdn_url": "https://developer.mozilla.org/docs/Web/API/XMLHttpRequest/responseType#blob",
            "spec_url": "https://xhr.spec.whatwg.org/#dom-xmlhttprequestresponsetype-blob",
            "tags": [
              "web-features:xhr"
            ],
            "support": {
              "chrome": {
                "version_added": "31"
              },
              "chrome_android": "mirror",
              "edge": {
                "version_added": "12"
              },
              "firefox": {
                "version_added": "6"
              },
              "firefox_android": {
                "version_added": "50"
              },
              "ie": {
                "version_added": "10"
              },
              "oculus": "mirror",
              "opera": [
                {
                  "version_added": "18"
                },
                {
                  "version_added": "12",
                  "version_removed": "15"
                }
              ],
              "opera_android": [
                {
                  "version_added": "18"
                },
                {
                  "version_added": "12",
                  "version_removed": "14"
                }
              ],
              "safari": {
                "version_added": "5.1"
              },
              "safari_ios": "mirror",
              "samsunginternet_android": "mirror",
              "webview_android": "mirror",
              "webview_ios": "mirror"
            },
            "status": {
              "experimental": false,
              "standard_track": true,
              "deprecated": false
            }
          }
        },
        "document_value": {
          "__compat": {
            "mdn_url": "https://developer.mozilla.org/docs/Web/API/XMLHttpRequest/responseType#document",
            "spec_url": "https://xhr.spec.whatwg.org/#dom-xmlhttprequestresponsetype-document",
            "tags": [
              "web-features:xhr"
            ],
            "support": {
              "chrome": {
                "version_added": "31"
              },
              "chrome_android": "mirror",
              "edge": {
                "version_added": "12"
              },
              "firefox": {
                "version_added": "11"
              },
              "firefox_android": {
                "version_added": "50"
              },
              "ie": {
                "version_added": "10"
              },
              "oculus": "mirror",
              "opera": [
                {
                  "version_added": "18"
                },
                {
                  "version_added": "12",
                  "version_removed": "15"
                }
              ],
              "opera_android": [
                {
                  "version_added": "18"
                },
                {
                  "version_added": "12",
                  "version_removed": "14"
                }
              ],
              "safari": {
                "version_added": "7"
              },
              "safari_ios": "mirror",
              "samsunginternet_android": "mirror",
              "webview_android": "mirror",
              "webview_ios": "mirror"
            },
            "status": {
              "experimental": false,
              "standard_track": true,
              "deprecated": false
            }
          }
        },
        "json_value": {
          "__compat": {
            "mdn_url": "https://developer.mozilla.org/docs/Web/API/XMLHttpRequest/responseType#json",
            "spec_url": "https://xhr.spec.whatwg.org/#dom-xmlhttprequestresponsetype-json",
            "tags": [
              "web-features:xhr"
            ],
            "support": {
              "chrome": {
                "version_added": "31"
              },
              "chrome_android": "mirror",
              "edge": "mirror",
              "firefox": {
                "version_added": "10"
              },
              "firefox_android": {
                "version_added": "50"
              },
              "oculus": "mirror",
              "opera": [
                {
                  "version_added": "18"
                },
                {
                  "version_added": "12",
                  "version_removed": "15"
                }
              ],
              "opera_android": [
                {
                  "version_added": "18"
                },
                {
                  "version_added": "12",
                  "version_removed": "14"
                }
              ],
              "safari": {
                "version_added": "7"
              },
              "safari_ios": "mirror",
              "samsunginternet_android": "mirror",
              "webview_android": "mirror",
              "webview_ios": "mirror"
            },
            "status": {
              "experimental": false,
              "standard_track": true,
              "deprecated": false
            }
          }
        }
      },
      "responseURL": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/XMLHttpRequest/responseURL",
          "spec_url": "https://xhr.spec.whatwg.org/#the-responseurl-attribute",
          "tags": [
            "web-features:xhr"
          ],
          "support": {
            "chrome": {
              "version_added": "37"
            },
            "chrome_android": "mirror",
            "edge": {
              "version_added": "14"
            },
            "firefox": {
              "version_added": "32"
            },
            "firefox_android": "mirror",
            "oculus": "mirror",
            "opera": "mirror",
            "opera_android": "mirror",
            "safari": {
              "version_added": "8"
            },
            "safari_ios": "mirror",
            "samsunginternet_android": "mirror",
            "webview_android": "mirror",
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "responseXML": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/XMLHttpRequest/responseXML",
          "spec_url": "https://xhr.spec.whatwg.org/#the-responsexml-attribute",
          "tags": [
            "web-features:xhr"
          ],
          "support": {
            "chrome": {
              "version_added": "1"
            },
            "chrome_android": "mirror",
            "edge": {
              "version_added": "12"
            },
            "firefox": {
              "version_added": "1",
              "notes": "Before Firefox 51, an error parsing the received data added a `<parsererror>` node to the top of the `Document` and then returned the `Document` in whatever state it happens to be in. This was inconsistent with the specification. Starting with Firefox 51, this scenario now correctly returns `null` as per the spec."
            },
            "firefox_android": "mirror",
            "ie": {
              "version_added": "7"
            },
            "oculus": "mirror",
            "opera": {
              "version_added": "≤12.1"
            },
            "opera_android": {
              "version_added": "≤12.1"
            },
            "safari": {
              "version_added": "3"
            },
            "safari_ios": {
              "version_added": "1"
            },
            "samsunginternet_android": "mirror",
            "webview_android": "mirror",
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "send": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/XMLHttpRequest/send",
          "spec_url": "https://xhr.spec.whatwg.org/#the-send()-method",
          "tags": [
            "web-features:xhr"
          ],
          "support": {
            "chrome": {
              "version_added": "1"
            },
            "chrome_android": "mirror",
            "edge": {
              "version_added": "12"
            },
            "firefox": {
              "version_added": "1"
            },
            "firefox_android": "mirror",
            "ie": {
              "version_added": "5"
            },
            "oculus": "mirror",
            "opera": {
              "version_added": "8"
            },
            "opera_android": {
              "version_added": "10.1"
            },
            "safari": {
              "version_added": "1.2"
            },
            "safari_ios": "mirror",
            "samsunginternet_android": "mirror",
            "webview_android": "mirror",
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        },
        "body_ArrayBuffer_type": {
          "__compat": {
            "description": "ArrayBuffer as parameter to send()",
            "spec_url": "https://fetch.spec.whatwg.org/#typedefdef-xmlhttprequestbodyinit",
            "tags": [
              "web-features:xhr"
            ],
            "support": {
              "chrome": {
                "version_added": "9"
              },
              "chrome_android": "mirror",
              "edge": {
                "version_added": "12"
              },
              "firefox": {
                "version_added": "9"
              },
              "firefox_android": "mirror",
              "ie": {
                "version_added": "10"
              },
              "oculus": "mirror",
              "opera": {
                "version_added": "11.6"
              },
              "opera_android": {
                "version_added": "12"
              },
              "safari": {
                "version_added": "6"
              },
              "safari_ios": "mirror",
              "samsunginternet_android": "mirror",
              "webview_android": "mirror",
              "webview_ios": "mirror"
            },
            "status": {
              "experimental": false,
              "standard_track": true,
              "deprecated": false
            }
          }
        },
        "body_ArrayBufferView_type": {
          "__compat": {
            "description": "ArrayBufferView as parameter to send()",
            "spec_url": "https://fetch.spec.whatwg.org/#typedefdef-xmlhttprequestbodyinit",
            "tags": [
              "web-features:xhr"
            ],
            "support": {
              "chrome": {
                "version_added": "22"
              },
              "chrome_android": "mirror",
              "edge": {
                "version_added": "12"
              },
              "firefox": {
                "version_added": "20"
              },
              "firefox_android": "mirror",
              "ie": {
                "version_added": "10"
              },
              "oculus": "mirror",
              "opera": {
                "version_added": "11.6"
              },
              "opera_android": {
                "version_added": "12"
              },
              "safari": {
                "version_added": "7"
              },
              "safari_ios": "mirror",
              "samsunginternet_android": "mirror",
              "webview_android": "mirror",
              "webview_ios": "mirror"
            },
            "status": {
              "experimental": false,
              "standard_track": true,
              "deprecated": false
            }
          }
        },
        "body_Blob_type": {
          "__compat": {
            "description": "Blob as parameter to send()",
            "spec_url": "https://fetch.spec.whatwg.org/#typedefdef-xmlhttprequestbodyinit",
            "tags": [
              "web-features:xhr"
            ],
            "support": {
              "chrome": {
                "version_added": "22"
              },
              "chrome_android": "mirror",
              "edge": {
                "version_added": "12"
              },
              "firefox": {
                "version_added": "2"
              },
              "firefox_android": "mirror",
              "ie": {
                "version_added": "10"
              },
              "oculus": "mirror",
              "opera": {
                "version_added": "12"
              },
              "opera_android": {
                "version_added": "12"
              },
              "safari": {
                "version_added": "6"
              },
              "safari_ios": "mirror",
              "samsunginternet_android": "mirror",
              "webview_android": "mirror",
              "webview_ios": "mirror"
            },
            "status": {
              "experimental": false,
              "standard_track": true,
              "deprecated": false
            }
          }
        },
        "body_FormData_type": {
          "__compat": {
            "description": "FormData as parameter to send()",
            "spec_url": "https://fetch.spec.whatwg.org/#typedefdef-xmlhttprequestbodyinit",
            "tags": [
              "web-features:xhr"
            ],
            "support": {
              "chrome": {
                "version_added": "6"
              },
              "chrome_android": "mirror",
              "edge": {
                "version_added": "12"
              },
              "firefox": {
                "version_added": "2"
              },
              "firefox_android": "mirror",
              "ie": {
                "version_added": "10"
              },
              "oculus": "mirror",
              "opera": {
                "version_added": "12"
              },
              "opera_android": {
                "version_added": "12"
              },
              "safari": {
                "version_added": "6"
              },
              "safari_ios": "mirror",
              "samsunginternet_android": "mirror",
              "webview_android": "mirror",
              "webview_ios": "mirror"
            },
            "status": {
              "experimental": false,
              "standard_track": true,
              "deprecated": false
            }
          }
        },
        "body_URLSearchParams_type": {
          "__compat": {
            "description": "URLSearchParams as parameter to send()",
            "spec_url": "https://fetch.spec.whatwg.org/#typedefdef-xmlhttprequestbodyinit",
            "tags": [
              "web-features:xhr"
            ],
            "support": {
              "chrome": {
                "version_added": "59"
              },
              "chrome_android": "mirror",
              "edge": {
                "version_added": "17"
              },
              "firefox": {
                "version_added": "44"
              },
              "firefox_android": "mirror",
              "oculus": "mirror",
              "opera": "mirror",
              "opera_android": "mirror",
              "safari": [
                {
                  "version_added": "15"
                },
                {
                  "version_added": "10.1",
                  "version_removed": "15",
                  "partial_implementation": true,
                  "notes": "Doesn't send the correct `Content-Type` header by default. See [bug 227477](https://webkit.org/b/227477)."
                }
              ],
              "safari_ios": "mirror",
              "samsunginternet_android": "mirror",
              "webview_android": "mirror",
              "webview_ios": "mirror"
            },
            "status": {
              "experimental": false,
              "standard_track": true,
              "deprecated": false
            }
          }
        }
      },
      "setAttributionReporting": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/XMLHttpRequest/setAttributionReporting",
          "tags": [
            "web-features:attribution-reporting"
          ],
          "support": {
            "chrome": {
              "version_added": "125"
            },
            "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": false,
            "standard_track": false,
            "deprecated": true
          }
        }
      },
      "setPrivateToken": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/XMLHttpRequest/setPrivateToken",
          "spec_url": "https://wicg.github.io/trust-token-api/#dom-xmlhttprequest-setprivatetoken",
          "support": {
            "chrome": {
              "version_added": "117"
            },
            "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
            },
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": true,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "setRequestHeader": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/XMLHttpRequest/setRequestHeader",
          "spec_url": "https://xhr.spec.whatwg.org/#the-setrequestheader()-method",
          "tags": [
            "web-features:xhr"
          ],
          "support": {
            "chrome": {
              "version_added": "1"
            },
            "chrome_android": "mirror",
            "edge": {
              "version_added": "12"
            },
            "firefox": {
              "version_added": "1"
            },
            "firefox_android": "mirror",
            "ie": {
              "version_added": "5"
            },
            "oculus": "mirror",
            "opera": {
              "version_added": "8"
            },
            "opera_android": {
              "version_added": "10.1"
            },
            "safari": {
              "version_added": "1.2"
            },
            "safari_ios": "mirror",
            "samsunginternet_android": "mirror",
            "webview_android": "mirror",
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "status": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/XMLHttpRequest/status",
          "spec_url": "https://xhr.spec.whatwg.org/#the-status-attribute",
          "tags": [
            "web-features:xhr"
          ],
          "support": {
            "chrome": {
              "version_added": "1"
            },
            "chrome_android": "mirror",
            "edge": {
              "version_added": "12"
            },
            "firefox": {
              "version_added": "1"
            },
            "firefox_android": "mirror",
            "ie": {
              "version_added": "7",
              "notes": "Internet Explorer version 5 and 6 supported ajax calls using `ActiveXObject()`"
            },
            "oculus": "mirror",
            "opera": {
              "version_added": "8"
            },
            "opera_android": {
              "version_added": "10.1"
            },
            "safari": {
              "version_added": "1.2"
            },
            "safari_ios": "mirror",
            "samsunginternet_android": "mirror",
            "webview_android": "mirror",
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "statusText": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/XMLHttpRequest/statusText",
          "spec_url": "https://xhr.spec.whatwg.org/#the-statustext-attribute",
          "tags": [
            "web-features:xhr"
          ],
          "support": {
            "chrome": {
              "version_added": "1"
            },
            "chrome_android": "mirror",
            "edge": {
              "version_added": "12"
            },
            "firefox": {
              "version_added": "1"
            },
            "firefox_android": "mirror",
            "ie": {
              "version_added": "7",
              "notes": "Internet Explorer version 5 and 6 supported ajax calls using `ActiveXObject()`"
            },
            "oculus": "mirror",
            "opera": {
              "version_added": "≤12.1"
            },
            "opera_android": {
              "version_added": "≤12.1"
            },
            "safari": {
              "version_added": "1.2"
            },
            "safari_ios": "mirror",
            "samsunginternet_android": "mirror",
            "webview_android": "mirror",
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "timeout": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/XMLHttpRequest/timeout",
          "spec_url": "https://xhr.spec.whatwg.org/#the-timeout-attribute",
          "tags": [
            "web-features:xhr"
          ],
          "support": {
            "chrome": {
              "version_added": "29"
            },
            "chrome_android": "mirror",
            "edge": {
              "version_added": "12"
            },
            "firefox": {
              "version_added": "12"
            },
            "firefox_android": "mirror",
            "ie": {
              "version_added": "8"
            },
            "oculus": "mirror",
            "opera": [
              {
                "version_added": "17"
              },
              {
                "version_added": "12",
                "version_removed": "16"
              }
            ],
            "opera_android": [
              {
                "version_added": "18"
              },
              {
                "version_added": "12",
                "version_removed": "16"
              }
            ],
            "safari": {
              "version_added": "7"
            },
            "safari_ios": "mirror",
            "samsunginternet_android": "mirror",
            "webview_android": "mirror",
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "timeout_event": {
        "__compat": {
          "description": "`timeout` event",
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/XMLHttpRequestEventTarget/timeout_event",
          "spec_url": [
            "https://xhr.spec.whatwg.org/#event-xhr-timeout",
            "https://xhr.spec.whatwg.org/#handler-xhr-ontimeout"
          ],
          "tags": [
            "web-features:xhr"
          ],
          "support": {
            "chrome": {
              "version_added": "29"
            },
            "chrome_android": "mirror",
            "edge": {
              "version_added": "12"
            },
            "firefox": {
              "version_added": "12"
            },
            "firefox_android": "mirror",
            "ie": {
              "version_added": "8"
            },
            "oculus": "mirror",
            "opera": "mirror",
            "opera_android": "mirror",
            "safari": {
              "version_added": "7"
            },
            "safari_ios": "mirror",
            "samsunginternet_android": {
              "version_added": "1.0"
            },
            "webview_android": "mirror",
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "upload": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/XMLHttpRequest/upload",
          "spec_url": "https://xhr.spec.whatwg.org/#the-upload-attribute",
          "tags": [
            "web-features:xhr"
          ],
          "support": {
            "chrome": {
              "version_added": "2"
            },
            "chrome_android": "mirror",
            "edge": {
              "version_added": "12"
            },
            "firefox": {
              "version_added": "3.5"
            },
            "firefox_android": "mirror",
            "ie": {
              "version_added": "10"
            },
            "oculus": "mirror",
            "opera": {
              "version_added": "≤12.1"
            },
            "opera_android": {
              "version_added": "≤12.1"
            },
            "safari": {
              "version_added": "4"
            },
            "safari_ios": {
              "version_added": "3"
            },
            "samsunginternet_android": "mirror",
            "webview_android": "mirror",
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "withCredentials": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/XMLHttpRequest/withCredentials",
          "spec_url": "https://xhr.spec.whatwg.org/#the-withcredentials-attribute",
          "tags": [
            "web-features:xhr"
          ],
          "support": {
            "chrome": {
              "version_added": "3"
            },
            "chrome_android": "mirror",
            "edge": {
              "version_added": "12"
            },
            "firefox": {
              "version_added": "3.5",
              "notes": "Starting with Firefox 11, it's no longer supported to use the `withCredentials` attribute when performing synchronous requests. Attempting to do so throws an `NS_ERROR_DOM_INVALID_ACCESS_ERR` exception."
            },
            "firefox_android": "mirror",
            "ie": {
              "version_added": "10",
              "notes": "Internet Explorer versions 8 and 9 supported cross-domain requests (CORS) using [`XDomainRequest`](https://developer.mozilla.org/docs/Web/API/XDomainRequest)."
            },
            "oculus": "mirror",
            "opera": {
              "version_added": "12"
            },
            "opera_android": {
              "version_added": "12"
            },
            "safari": {
              "version_added": "4"
            },
            "safari_ios": "mirror",
            "samsunginternet_android": "mirror",
            "webview_android": "mirror",
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      }
    }
  }
}