{
  "api": {
    "ProgressEvent": {
      "__compat": {
        "mdn_url": "https://developer.mozilla.org/docs/Web/API/ProgressEvent",
        "spec_url": "https://xhr.spec.whatwg.org/#interface-progressevent",
        "tags": [
          "web-features:xhr"
        ],
        "support": {
          "chrome": {
            "version_added": "1"
          },
          "chrome_android": "mirror",
          "deno": {
            "version_added": "1.3"
          },
          "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": "3.1"
          },
          "safari_ios": "mirror",
          "samsunginternet_android": "mirror",
          "webview_android": {
            "version_added": "≤37"
          },
          "webview_ios": "mirror"
        },
        "status": {
          "experimental": false,
          "standard_track": true,
          "deprecated": false
        }
      },
      "ProgressEvent": {
        "__compat": {
          "description": "`ProgressEvent()` constructor",
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/ProgressEvent/ProgressEvent",
          "spec_url": "https://xhr.spec.whatwg.org/#dom-progressevent-progressevent",
          "tags": [
            "web-features:xhr"
          ],
          "support": {
            "chrome": {
              "version_added": "16"
            },
            "chrome_android": "mirror",
            "deno": {
              "version_added": "1.3"
            },
            "edge": {
              "version_added": "14"
            },
            "firefox": {
              "version_added": "18"
            },
            "firefox_android": "mirror",
            "ie": {
              "version_added": false
            },
            "oculus": "mirror",
            "opera": {
              "version_added": "≤12.1"
            },
            "opera_android": {
              "version_added": "≤12.1"
            },
            "safari": {
              "version_added": "6"
            },
            "safari_ios": "mirror",
            "samsunginternet_android": "mirror",
            "webview_android": "mirror",
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "worker_support": {
        "__compat": {
          "description": "Available in workers",
          "tags": [
            "web-features:xhr"
          ],
          "support": {
            "chrome": {
              "version_added": "47",
              "partial_implementation": true,
              "notes": "Available in dedicated workers and shared workers, not available in service workers. See [bug 332663431](https://crbug.com/332663431)."
            },
            "chrome_android": "mirror",
            "edge": "mirror",
            "firefox": {
              "version_added": "54"
            },
            "firefox_android": "mirror",
            "ie": {
              "version_added": false
            },
            "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
          }
        }
      },
      "lengthComputable": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/ProgressEvent/lengthComputable",
          "spec_url": "https://xhr.spec.whatwg.org/#dom-progressevent-lengthcomputable",
          "tags": [
            "web-features:xhr"
          ],
          "support": {
            "chrome": {
              "version_added": "1"
            },
            "chrome_android": "mirror",
            "deno": {
              "version_added": "1.3"
            },
            "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": "3.1"
            },
            "safari_ios": "mirror",
            "samsunginternet_android": "mirror",
            "webview_android": "mirror",
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "loaded": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/ProgressEvent/loaded",
          "spec_url": "https://xhr.spec.whatwg.org/#dom-progressevent-loaded",
          "tags": [
            "web-features:xhr"
          ],
          "support": {
            "chrome": {
              "version_added": "1"
            },
            "chrome_android": "mirror",
            "deno": {
              "version_added": "1.3"
            },
            "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": "3.1"
            },
            "safari_ios": "mirror",
            "samsunginternet_android": "mirror",
            "webview_android": {
              "version_added": "≤37"
            },
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "total": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/ProgressEvent/total",
          "spec_url": "https://xhr.spec.whatwg.org/#dom-progressevent-total",
          "tags": [
            "web-features:xhr"
          ],
          "support": {
            "chrome": {
              "version_added": "1"
            },
            "chrome_android": "mirror",
            "deno": {
              "version_added": "1.3"
            },
            "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": "3.1"
            },
            "safari_ios": "mirror",
            "samsunginternet_android": "mirror",
            "webview_android": {
              "version_added": "≤37"
            },
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      }
    }
  }
}