{
  "api": {
    "IntersectionObserver": {
      "__compat": {
        "mdn_url": "https://developer.mozilla.org/docs/Web/API/IntersectionObserver",
        "spec_url": "https://w3c.github.io/IntersectionObserver/#intersection-observer-interface",
        "tags": [
          "web-features:intersection-observer"
        ],
        "support": {
          "chrome": {
            "version_added": "51"
          },
          "chrome_android": "mirror",
          "edge": {
            "version_added": "15"
          },
          "firefox": {
            "version_added": "55"
          },
          "firefox_android": "mirror",
          "ie": {
            "version_added": false
          },
          "oculus": "mirror",
          "opera": "mirror",
          "opera_android": "mirror",
          "safari": {
            "version_added": "12.1"
          },
          "safari_ios": "mirror",
          "samsunginternet_android": "mirror",
          "webview_android": "mirror",
          "webview_ios": "mirror"
        },
        "status": {
          "experimental": false,
          "standard_track": true,
          "deprecated": false
        }
      },
      "IntersectionObserver": {
        "__compat": {
          "description": "<code>IntersectionObserver()</code> constructor",
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/IntersectionObserver/IntersectionObserver",
          "spec_url": "https://w3c.github.io/IntersectionObserver/#dom-intersectionobserver-intersectionobserver",
          "tags": [
            "web-features:intersection-observer"
          ],
          "support": {
            "chrome": {
              "version_added": "51"
            },
            "chrome_android": "mirror",
            "edge": {
              "version_added": "15"
            },
            "firefox": {
              "version_added": "55",
              "notes": "Before version 96, the constructor throws a <code>DOMException</code> if the <code>options.rootMargin</code> option is passed an empty string (see <a href='https://bugzil.la/1738791'>bug 1738791</a>)."
            },
            "firefox_android": {
              "version_added": "55"
            },
            "ie": {
              "version_added": false
            },
            "oculus": "mirror",
            "opera": "mirror",
            "opera_android": "mirror",
            "safari": {
              "version_added": "12.1"
            },
            "safari_ios": "mirror",
            "samsunginternet_android": "mirror",
            "webview_android": "mirror",
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        },
        "options_root_parameter_Document": {
          "__compat": {
            "description": "<code>options.root</code> parameter can be a <code>Document</code>",
            "support": {
              "chrome": {
                "version_added": "81"
              },
              "chrome_android": "mirror",
              "edge": "mirror",
              "firefox": {
                "version_added": "76"
              },
              "firefox_android": "mirror",
              "ie": {
                "version_added": false
              },
              "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
            }
          }
        }
      },
      "delay": {
        "__compat": {
          "spec_url": "https://w3c.github.io/IntersectionObserver/#dom-intersectionobserver-delay",
          "support": {
            "chrome": {
              "version_added": "74"
            },
            "chrome_android": "mirror",
            "edge": "mirror",
            "firefox": {
              "version_added": false
            },
            "firefox_android": "mirror",
            "ie": {
              "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": true,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "disconnect": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/IntersectionObserver/disconnect",
          "spec_url": "https://w3c.github.io/IntersectionObserver/#dom-intersectionobserver-disconnect",
          "tags": [
            "web-features:intersection-observer"
          ],
          "support": {
            "chrome": {
              "version_added": "51"
            },
            "chrome_android": "mirror",
            "edge": {
              "version_added": "15",
              "notes": "Available since <a href='https://developer.microsoft.com/microsoft-edge/platform/status/intersectionobserver/'>Windows Insider Preview Build 14986</a>."
            },
            "firefox": {
              "version_added": "55"
            },
            "firefox_android": "mirror",
            "ie": {
              "version_added": false
            },
            "oculus": "mirror",
            "opera": "mirror",
            "opera_android": "mirror",
            "safari": {
              "version_added": "12.1"
            },
            "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/IntersectionObserver/observe",
          "spec_url": "https://w3c.github.io/IntersectionObserver/#dom-intersectionobserver-observe",
          "tags": [
            "web-features:intersection-observer"
          ],
          "support": {
            "chrome": {
              "version_added": "51"
            },
            "chrome_android": "mirror",
            "edge": {
              "version_added": "15"
            },
            "firefox": {
              "version_added": "55"
            },
            "firefox_android": "mirror",
            "ie": {
              "version_added": false
            },
            "oculus": "mirror",
            "opera": "mirror",
            "opera_android": "mirror",
            "safari": {
              "version_added": "12.1"
            },
            "safari_ios": "mirror",
            "samsunginternet_android": "mirror",
            "webview_android": "mirror",
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "root": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/IntersectionObserver/root",
          "spec_url": "https://w3c.github.io/IntersectionObserver/#dom-intersectionobserver-root",
          "tags": [
            "web-features:intersection-observer"
          ],
          "support": {
            "chrome": {
              "version_added": "51"
            },
            "chrome_android": "mirror",
            "edge": {
              "version_added": "15"
            },
            "firefox": {
              "version_added": "55"
            },
            "firefox_android": "mirror",
            "ie": {
              "version_added": false
            },
            "oculus": "mirror",
            "opera": "mirror",
            "opera_android": "mirror",
            "safari": {
              "version_added": "12.1"
            },
            "safari_ios": "mirror",
            "samsunginternet_android": "mirror",
            "webview_android": "mirror",
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "rootMargin": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/IntersectionObserver/rootMargin",
          "spec_url": "https://w3c.github.io/IntersectionObserver/#dom-intersectionobserver-rootmargin",
          "tags": [
            "web-features:intersection-observer"
          ],
          "support": {
            "chrome": {
              "version_added": "51"
            },
            "chrome_android": "mirror",
            "edge": {
              "version_added": "15"
            },
            "firefox": {
              "version_added": "55"
            },
            "firefox_android": "mirror",
            "ie": {
              "version_added": false
            },
            "oculus": "mirror",
            "opera": "mirror",
            "opera_android": "mirror",
            "safari": {
              "version_added": "12.1",
              "notes": "<code>rootMargin</code> does not work with <code>&lt;iframe&gt;</code>s."
            },
            "safari_ios": "mirror",
            "samsunginternet_android": "mirror",
            "webview_android": "mirror",
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "scrollMargin": {
        "__compat": {
          "support": {
            "chrome": {
              "version_added": "120"
            },
            "chrome_android": "mirror",
            "edge": "mirror",
            "firefox": {
              "version_added": false
            },
            "firefox_android": "mirror",
            "ie": {
              "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": true,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "takeRecords": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/IntersectionObserver/takeRecords",
          "spec_url": "https://w3c.github.io/IntersectionObserver/#dom-intersectionobserver-takerecords",
          "tags": [
            "web-features:intersection-observer"
          ],
          "support": {
            "chrome": {
              "version_added": "51"
            },
            "chrome_android": "mirror",
            "edge": {
              "version_added": "15",
              "notes": "Available since <a href='https://developer.microsoft.com/microsoft-edge/platform/status/intersectionobserver/'>Windows Insider Preview Build 14986</a>."
            },
            "firefox": {
              "version_added": "55"
            },
            "firefox_android": "mirror",
            "ie": {
              "version_added": false
            },
            "oculus": "mirror",
            "opera": "mirror",
            "opera_android": "mirror",
            "safari": {
              "version_added": "12.1"
            },
            "safari_ios": "mirror",
            "samsunginternet_android": "mirror",
            "webview_android": "mirror",
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "thresholds": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/IntersectionObserver/thresholds",
          "spec_url": "https://w3c.github.io/IntersectionObserver/#dom-intersectionobserver-thresholds",
          "tags": [
            "web-features:intersection-observer"
          ],
          "support": {
            "chrome": {
              "version_added": "52"
            },
            "chrome_android": "mirror",
            "edge": {
              "version_added": "15"
            },
            "firefox": {
              "version_added": "55"
            },
            "firefox_android": "mirror",
            "ie": {
              "version_added": false
            },
            "oculus": "mirror",
            "opera": "mirror",
            "opera_android": "mirror",
            "safari": {
              "version_added": "12.1"
            },
            "safari_ios": "mirror",
            "samsunginternet_android": "mirror",
            "webview_android": "mirror",
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "trackVisibility": {
        "__compat": {
          "spec_url": "https://w3c.github.io/IntersectionObserver/#dom-intersectionobserver-trackvisibility",
          "support": {
            "chrome": {
              "version_added": "74"
            },
            "chrome_android": "mirror",
            "edge": "mirror",
            "firefox": {
              "version_added": false
            },
            "firefox_android": "mirror",
            "ie": {
              "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": true,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "unobserve": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/IntersectionObserver/unobserve",
          "spec_url": "https://w3c.github.io/IntersectionObserver/#dom-intersectionobserver-unobserve",
          "tags": [
            "web-features:intersection-observer"
          ],
          "support": {
            "chrome": {
              "version_added": "51"
            },
            "chrome_android": "mirror",
            "edge": {
              "version_added": "15",
              "notes": "Available since <a href='https://developer.microsoft.com/microsoft-edge/platform/status/intersectionobserver/'>Windows Insider Preview Build 14986</a>."
            },
            "firefox": {
              "version_added": "55"
            },
            "firefox_android": "mirror",
            "ie": {
              "version_added": false
            },
            "oculus": "mirror",
            "opera": "mirror",
            "opera_android": "mirror",
            "safari": {
              "version_added": "12.1"
            },
            "safari_ios": "mirror",
            "samsunginternet_android": "mirror",
            "webview_android": "mirror",
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      }
    }
  }
}