{
  "api": {
    "PerformanceObserver": {
      "__compat": {
        "mdn_url": "https://developer.mozilla.org/docs/Web/API/PerformanceObserver",
        "spec_url": "https://w3c.github.io/performance-timeline/#dom-performanceobserver",
        "tags": [
          "web-features:performance"
        ],
        "support": {
          "chrome": {
            "version_added": "52"
          },
          "chrome_android": "mirror",
          "edge": "mirror",
          "firefox": {
            "version_added": "57"
          },
          "firefox_android": "mirror",
          "ie": {
            "version_added": false
          },
          "nodejs": [
            {
              "version_added": "19.0.0"
            },
            {
              "version_added": "8.5.0",
              "partial_implementation": true,
              "notes": "Available as a part of the `perf_hooks` module."
            }
          ],
          "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
        }
      },
      "PerformanceObserver": {
        "__compat": {
          "description": "`PerformanceObserver()` constructor",
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/PerformanceObserver/PerformanceObserver",
          "spec_url": "https://w3c.github.io/performance-timeline/#dom-performanceobserver-constructor",
          "tags": [
            "web-features:performance"
          ],
          "support": {
            "chrome": {
              "version_added": "52"
            },
            "chrome_android": "mirror",
            "edge": "mirror",
            "firefox": {
              "version_added": "57"
            },
            "firefox_android": "mirror",
            "ie": {
              "version_added": false
            },
            "nodejs": {
              "version_added": "8.5.0"
            },
            "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
          }
        },
        "droppedEntriesCount": {
          "__compat": {
            "description": "`droppedEntriesCount()` parameter",
            "spec_url": "https://w3c.github.io/performance-timeline/#dom-performanceobservercallbackoptions-droppedentriescount",
            "tags": [
              "web-features:performance"
            ],
            "support": {
              "chrome": {
                "version_added": "95"
              },
              "chrome_android": "mirror",
              "edge": "mirror",
              "firefox": {
                "version_added": false
              },
              "firefox_android": "mirror",
              "ie": {
                "version_added": false
              },
              "nodejs": {
                "version_added": false
              },
              "oculus": "mirror",
              "opera": "mirror",
              "opera_android": "mirror",
              "safari": {
                "version_added": false
              },
              "safari_ios": "mirror",
              "samsunginternet_android": "mirror",
              "webview_android": "mirror",
              "webview_ios": "mirror"
            },
            "status": {
              "experimental": true,
              "standard_track": true,
              "deprecated": false
            }
          }
        }
      },
      "worker_support": {
        "__compat": {
          "description": "Available in workers",
          "tags": [
            "web-features:performance"
          ],
          "support": {
            "chrome": {
              "version_added": "62"
            },
            "chrome_android": "mirror",
            "edge": "mirror",
            "firefox": {
              "version_added": "57"
            },
            "firefox_android": "mirror",
            "ie": {
              "version_added": false
            },
            "nodejs": {
              "version_added": "11.7.0"
            },
            "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
          }
        }
      },
      "disconnect": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/PerformanceObserver/disconnect",
          "spec_url": "https://w3c.github.io/performance-timeline/#dom-performanceobserver-disconnect",
          "tags": [
            "web-features:performance"
          ],
          "support": {
            "chrome": {
              "version_added": "52"
            },
            "chrome_android": "mirror",
            "edge": "mirror",
            "firefox": {
              "version_added": "57"
            },
            "firefox_android": "mirror",
            "ie": {
              "version_added": false
            },
            "nodejs": {
              "version_added": "8.5.0"
            },
            "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
          }
        }
      },
      "observe": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/PerformanceObserver/observe",
          "spec_url": "https://w3c.github.io/performance-timeline/#dom-performanceobserver-observe",
          "tags": [
            "web-features:performance"
          ],
          "support": {
            "chrome": {
              "version_added": "52"
            },
            "chrome_android": "mirror",
            "edge": "mirror",
            "firefox": {
              "version_added": "57"
            },
            "firefox_android": "mirror",
            "ie": {
              "version_added": false
            },
            "nodejs": {
              "version_added": "8.5.0"
            },
            "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
          }
        }
      },
      "supportedEntryTypes_static": {
        "__compat": {
          "description": "`supportedEntryTypes()` static method",
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/PerformanceObserver/supportedEntryTypes_static",
          "spec_url": "https://w3c.github.io/performance-timeline/#supportedentrytypes-attribute",
          "tags": [
            "web-features:performance"
          ],
          "support": {
            "chrome": {
              "version_added": "73"
            },
            "chrome_android": "mirror",
            "edge": "mirror",
            "firefox": {
              "version_added": "68"
            },
            "firefox_android": "mirror",
            "ie": {
              "version_added": false
            },
            "nodejs": {
              "version_added": "16.0.0"
            },
            "oculus": "mirror",
            "opera": "mirror",
            "opera_android": "mirror",
            "safari": {
              "version_added": "13"
            },
            "safari_ios": "mirror",
            "samsunginternet_android": "mirror",
            "webview_android": "mirror",
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "takeRecords": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/PerformanceObserver/takeRecords",
          "spec_url": "https://w3c.github.io/performance-timeline/#dom-performanceobserver-takerecords",
          "tags": [
            "web-features:performance"
          ],
          "support": {
            "chrome": {
              "version_added": "65"
            },
            "chrome_android": "mirror",
            "edge": "mirror",
            "firefox": {
              "version_added": "60"
            },
            "firefox_android": "mirror",
            "ie": {
              "version_added": false
            },
            "nodejs": {
              "version_added": "16.0.0"
            },
            "oculus": "mirror",
            "opera": "mirror",
            "opera_android": "mirror",
            "safari": {
              "version_added": "15"
            },
            "safari_ios": "mirror",
            "samsunginternet_android": "mirror",
            "webview_android": "mirror",
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      }
    }
  }
}