{
  "api": {
    "MutationObserver": {
      "__compat": {
        "mdn_url": "https://developer.mozilla.org/docs/Web/API/MutationObserver",
        "spec_url": "https://dom.spec.whatwg.org/#interface-mutationobserver",
        "tags": [
          "web-features:mutationobserver"
        ],
        "support": {
          "chrome": [
            {
              "version_added": "26"
            },
            {
              "prefix": "WebKit",
              "version_added": "18"
            }
          ],
          "chrome_android": "mirror",
          "edge": {
            "version_added": "12"
          },
          "firefox": {
            "version_added": "14"
          },
          "firefox_android": "mirror",
          "ie": {
            "version_added": "11"
          },
          "oculus": "mirror",
          "opera": {
            "version_added": "15"
          },
          "opera_android": {
            "version_added": "14"
          },
          "safari": [
            {
              "version_added": "7"
            },
            {
              "prefix": "WebKit",
              "version_added": "6"
            }
          ],
          "safari_ios": "mirror",
          "samsunginternet_android": "mirror",
          "webview_android": [
            {
              "version_added": "4.4"
            },
            {
              "prefix": "WebKit",
              "version_added": "≤37"
            }
          ],
          "webview_ios": "mirror"
        },
        "status": {
          "experimental": false,
          "standard_track": true,
          "deprecated": false
        }
      },
      "MutationObserver": {
        "__compat": {
          "description": "`MutationObserver()` constructor",
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/MutationObserver/MutationObserver",
          "spec_url": "https://dom.spec.whatwg.org/#ref-for-dom-mutationobserver-mutationobserver①",
          "tags": [
            "web-features:mutationobserver"
          ],
          "support": {
            "chrome": [
              {
                "version_added": "26"
              },
              {
                "prefix": "WebKit",
                "version_added": "18"
              }
            ],
            "chrome_android": "mirror",
            "edge": {
              "version_added": "12"
            },
            "firefox": {
              "version_added": "14"
            },
            "firefox_android": "mirror",
            "ie": {
              "version_added": "11"
            },
            "oculus": "mirror",
            "opera": {
              "version_added": "15"
            },
            "opera_android": {
              "version_added": "14"
            },
            "safari": [
              {
                "version_added": "7"
              },
              {
                "prefix": "WebKit",
                "version_added": "6"
              }
            ],
            "safari_ios": "mirror",
            "samsunginternet_android": "mirror",
            "webview_android": [
              {
                "version_added": "4.4"
              },
              {
                "prefix": "WebKit",
                "version_added": "≤37"
              }
            ],
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "disconnect": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/MutationObserver/disconnect",
          "spec_url": "https://dom.spec.whatwg.org/#ref-for-dom-mutationobserver-disconnect①",
          "tags": [
            "web-features:mutationobserver"
          ],
          "support": {
            "chrome": {
              "version_added": "18"
            },
            "chrome_android": "mirror",
            "edge": {
              "version_added": "12"
            },
            "firefox": {
              "version_added": "14"
            },
            "firefox_android": "mirror",
            "ie": {
              "version_added": "11"
            },
            "oculus": "mirror",
            "opera": "mirror",
            "opera_android": "mirror",
            "safari": {
              "version_added": "6"
            },
            "safari_ios": "mirror",
            "samsunginternet_android": "mirror",
            "webview_android": "mirror",
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "observe": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/MutationObserver/observe",
          "spec_url": "https://dom.spec.whatwg.org/#ref-for-dom-mutationobserver-observe②",
          "tags": [
            "web-features:mutationobserver"
          ],
          "support": {
            "chrome": {
              "version_added": "18",
              "notes": "Before Chrome 33, `attributes: true` is required when using `attributeFilter` or `attributeOldValue`. If `attributes: true` is not present, then Chrome throws a syntax error."
            },
            "chrome_android": "mirror",
            "edge": {
              "version_added": "12",
              "notes": "Before Edge 79, `attributes: true` is required when using `attributeFilter` or `attributeOldValue`. If `attributes: true` is not present, then Edge throws a syntax error."
            },
            "firefox": {
              "version_added": "14",
              "notes": "Before Firefox 36, `attributes: true` is required when using `attributeFilter` or `attributeOldValue`. If `attributes: true` is not present, then Firefox throws a syntax error."
            },
            "firefox_android": "mirror",
            "ie": {
              "version_added": "11",
              "notes": "Internet Explorer requires `attributes: true` when using `attributeFilter` or `attributeOldValue`. If `attributes: true` is not present, then Internet Explorer throws a syntax error."
            },
            "oculus": "mirror",
            "opera": "mirror",
            "opera_android": "mirror",
            "safari": {
              "version_added": "6",
              "notes": "Before Safari 10.1, `attributes: true` is required when using `attributeFilter` or `attributeOldValue`. If `attributes: true` is not present, then Safari throws a syntax error."
            },
            "safari_ios": {
              "version_added": "6",
              "notes": "Before Safari iOS 10.3, `attributes: true` is required when using `attributeFilter` or `attributeOldValue`. If `attributes: true` is not present, then Safari throws a syntax error."
            },
            "samsunginternet_android": "mirror",
            "webview_android": {
              "version_added": "4.4",
              "notes": "Before WebView 4.4.3, `attributes: true` is required when using `attributeFilter` or `attributeOldValue`. If `attributes: true` is not present, then WebView throws a syntax error."
            },
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "takeRecords": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/MutationObserver/takeRecords",
          "spec_url": "https://dom.spec.whatwg.org/#ref-for-dom-mutationobserver-takerecords①",
          "tags": [
            "web-features:mutationobserver"
          ],
          "support": {
            "chrome": {
              "version_added": "20"
            },
            "chrome_android": "mirror",
            "edge": {
              "version_added": "12"
            },
            "firefox": {
              "version_added": "14"
            },
            "firefox_android": "mirror",
            "ie": {
              "version_added": "11"
            },
            "oculus": "mirror",
            "opera": "mirror",
            "opera_android": "mirror",
            "safari": {
              "version_added": "6"
            },
            "safari_ios": "mirror",
            "samsunginternet_android": "mirror",
            "webview_android": "mirror",
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      }
    }
  }
}