{
  "api": {
    "ShadowRoot": {
      "__compat": {
        "mdn_url": "https://developer.mozilla.org/docs/Web/API/ShadowRoot",
        "spec_url": "https://dom.spec.whatwg.org/#interface-shadowroot",
        "tags": [
          "web-features:shadow-dom"
        ],
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          "chrome": {
            "version_added": "53"
          },
          "chrome_android": "mirror",
          "edge": "mirror",
          "firefox": {
            "version_added": "63"
          },
          "firefox_android": "mirror",
          "oculus": "mirror",
          "opera": "mirror",
          "opera_android": "mirror",
          "safari": {
            "version_added": "10"
          },
          "safari_ios": "mirror",
          "samsunginternet_android": "mirror",
          "webview_android": "mirror",
          "webview_ios": "mirror"
        },
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          "experimental": false,
          "standard_track": true,
          "deprecated": false
        }
      },
      "activeElement": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/ShadowRoot/activeElement",
          "spec_url": "https://html.spec.whatwg.org/multipage/interaction.html#dom-documentorshadowroot-activeelement-dev",
          "support": {
            "chrome": {
              "version_added": "53"
            },
            "chrome_android": "mirror",
            "edge": "mirror",
            "firefox": {
              "version_added": "63"
            },
            "firefox_android": "mirror",
            "oculus": "mirror",
            "opera": "mirror",
            "opera_android": "mirror",
            "safari": {
              "version_added": "10"
            },
            "safari_ios": "mirror",
            "samsunginternet_android": "mirror",
            "webview_android": "mirror",
            "webview_ios": "mirror"
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          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
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      "adoptedStyleSheets": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/ShadowRoot/adoptedStyleSheets",
          "spec_url": "https://drafts.csswg.org/cssom/#dom-documentorshadowroot-adoptedstylesheets",
          "tags": [
            "web-features:constructed-stylesheets"
          ],
          "support": {
            "chrome": {
              "version_added": "73"
            },
            "chrome_android": "mirror",
            "edge": "mirror",
            "firefox": {
              "version_added": "101"
            },
            "firefox_android": "mirror",
            "oculus": "mirror",
            "opera": "mirror",
            "opera_android": {
              "version_added": "50"
            },
            "safari": {
              "version_added": "16.4"
            },
            "safari_ios": "mirror",
            "samsunginternet_android": "mirror",
            "webview_android": "mirror",
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
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      "clonable": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/ShadowRoot/clonable",
          "spec_url": "https://dom.spec.whatwg.org/#dom-shadowroot-clonable",
          "tags": [
            "web-features:shadow-dom"
          ],
          "support": {
            "chrome": {
              "version_added": "124"
            },
            "chrome_android": "mirror",
            "edge": "mirror",
            "firefox": {
              "version_added": "123"
            },
            "firefox_android": "mirror",
            "oculus": "mirror",
            "opera": "mirror",
            "opera_android": "mirror",
            "safari": {
              "version_added": "17.4"
            },
            "safari_ios": "mirror",
            "samsunginternet_android": "mirror",
            "webview_android": "mirror",
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "customElementRegistry": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/ShadowRoot/customElementRegistry",
          "spec_url": "https://dom.spec.whatwg.org/#dom-documentorshadowroot-customelementregistry",
          "tags": [
            "web-features:scoped-custom-element-registries"
          ],
          "support": {
            "chrome": {
              "version_added": "146"
            },
            "chrome_android": "mirror",
            "edge": "mirror",
            "firefox": {
              "version_added": "150",
              "flags": [
                {
                  "type": "preference",
                  "name": "dom.scoped-custom-element-registries.enabled",
                  "value_to_set": "true"
                }
              ],
              "impl_url": "https://bugzil.la/2018900"
            },
            "firefox_android": "mirror",
            "oculus": "mirror",
            "opera": "mirror",
            "opera_android": "mirror",
            "safari": {
              "version_added": "26"
            },
            "safari_ios": "mirror",
            "samsunginternet_android": "mirror",
            "webview_android": "mirror",
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "delegatesFocus": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/ShadowRoot/delegatesFocus",
          "spec_url": "https://dom.spec.whatwg.org/#shadowroot-delegates-focus",
          "tags": [
            "web-features:shadow-dom"
          ],
          "support": {
            "chrome": {
              "version_added": "53"
            },
            "chrome_android": "mirror",
            "edge": "mirror",
            "firefox": {
              "version_added": "94"
            },
            "firefox_android": "mirror",
            "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
          }
        }
      },
      "elementFromPoint": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/ShadowRoot/elementFromPoint",
          "support": {
            "chrome": {
              "version_added": "53",
              "notes": "Before Chrome 66, this method returned `null` when the element was a child of a host node. See [bug 40537452](https://crbug.com/40537452)."
            },
            "chrome_android": "mirror",
            "edge": {
              "version_added": "79"
            },
            "firefox": {
              "version_added": "63"
            },
            "firefox_android": "mirror",
            "oculus": "mirror",
            "opera": "mirror",
            "opera_android": "mirror",
            "safari": {
              "version_added": "10.1"
            },
            "safari_ios": "mirror",
            "samsunginternet_android": "mirror",
            "webview_android": "mirror",
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": false,
            "deprecated": false
          }
        }
      },
      "elementsFromPoint": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/ShadowRoot/elementsFromPoint",
          "support": {
            "chrome": {
              "version_added": "53",
              "notes": "Before Chrome 66, this method returned `null` when the element was a child of a host node. See [bug 40537452](https://crbug.com/40537452)."
            },
            "chrome_android": "mirror",
            "edge": {
              "version_added": "79"
            },
            "firefox": {
              "version_added": "63"
            },
            "firefox_android": "mirror",
            "oculus": "mirror",
            "opera": {
              "version_added": "40"
            },
            "opera_android": {
              "version_added": "41"
            },
            "safari": {
              "version_added": "11.1"
            },
            "safari_ios": "mirror",
            "samsunginternet_android": "mirror",
            "webview_android": "mirror",
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": false,
            "deprecated": false
          }
        }
      },
      "fullscreenElement": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/ShadowRoot/fullscreenElement",
          "spec_url": "https://fullscreen.spec.whatwg.org/#ref-for-dom-document-fullscreenelement②",
          "tags": [
            "web-features:fullscreen"
          ],
          "support": {
            "chrome": {
              "version_added": "71"
            },
            "chrome_android": "mirror",
            "edge": "mirror",
            "firefox": [
              {
                "version_added": "64"
              },
              {
                "alternative_name": "mozFullScreenElement",
                "version_added": "63"
              }
            ],
            "firefox_android": "mirror",
            "oculus": "mirror",
            "opera": "mirror",
            "opera_android": "mirror",
            "safari": {
              "version_added": "16.4"
            },
            "safari_ios": {
              "version_added": "16.4",
              "partial_implementation": true,
              "notes": [
                "Only available on iPad, not on iPhone.",
                "Shows an overlay button which can not be disabled. Swiping down exits fullscreen mode, making it unsuitable for some use cases like games."
              ]
            },
            "samsunginternet_android": "mirror",
            "webview_android": "mirror",
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "getAnimations": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/ShadowRoot/getAnimations",
          "spec_url": "https://drafts.csswg.org/web-animations-1/#dom-documentorshadowroot-getanimations",
          "tags": [
            "web-features:web-animations"
          ],
          "support": {
            "chrome": {
              "version_added": "84"
            },
            "chrome_android": "mirror",
            "edge": "mirror",
            "firefox": {
              "version_added": "75"
            },
            "firefox_android": "mirror",
            "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
          }
        }
      },
      "getHTML": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/ShadowRoot/getHTML",
          "spec_url": "https://html.spec.whatwg.org/multipage/dynamic-markup-insertion.html#dom-shadowroot-gethtml",
          "tags": [
            "web-features:gethtml"
          ],
          "support": {
            "chrome": {
              "version_added": "125"
            },
            "chrome_android": "mirror",
            "edge": "mirror",
            "firefox": {
              "version_added": "128"
            },
            "firefox_android": "mirror",
            "oculus": "mirror",
            "opera": "mirror",
            "opera_android": "mirror",
            "safari": {
              "version_added": "18"
            },
            "safari_ios": "mirror",
            "samsunginternet_android": "mirror",
            "webview_android": "mirror",
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        },
        "escapes_lt_gt_in_attributes": {
          "__compat": {
            "description": "Serializes `<` and `>` in attributes as `&amp;lt;` and `&amp;gt;` (see [this spec issue](https://github.com/whatwg/html/issues/6235))",
            "support": {
              "chrome": {
                "version_added": "138"
              },
              "chrome_android": "mirror",
              "edge": "mirror",
              "firefox": {
                "version_added": "140"
              },
              "firefox_android": "mirror",
              "oculus": "mirror",
              "opera": "mirror",
              "opera_android": "mirror",
              "safari": {
                "version_added": "26"
              },
              "safari_ios": "mirror",
              "samsunginternet_android": "mirror",
              "webview_android": "mirror",
              "webview_ios": "mirror"
            },
            "status": {
              "experimental": false,
              "standard_track": false,
              "deprecated": false
            }
          }
        }
      },
      "getSelection": {
        "__compat": {
          "support": {
            "chrome": {
              "version_added": "53"
            },
            "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": false
          }
        }
      },
      "host": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/ShadowRoot/host",
          "spec_url": "https://dom.spec.whatwg.org/#dom-shadowroot-host",
          "tags": [
            "web-features:shadow-dom"
          ],
          "support": {
            "chrome": {
              "version_added": "53"
            },
            "chrome_android": "mirror",
            "edge": "mirror",
            "firefox": {
              "version_added": "63"
            },
            "firefox_android": "mirror",
            "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
          }
        }
      },
      "innerHTML": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/ShadowRoot/innerHTML",
          "spec_url": "https://html.spec.whatwg.org/multipage/dynamic-markup-insertion.html#dom-shadowroot-innerhtml",
          "support": {
            "chrome": {
              "version_added": "53"
            },
            "chrome_android": "mirror",
            "edge": "mirror",
            "firefox": {
              "version_added": "63"
            },
            "firefox_android": "mirror",
            "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
          }
        },
        "enforces_trusted_types": {
          "__compat": {
            "description": "Requires `TrustedHTML` instance when trusted types are enforced",
            "spec_url": "https://w3c.github.io/trusted-types/dist/spec/#dom-xss-injection-sinks",
            "tags": [
              "web-features:trusted-types"
            ],
            "support": {
              "chrome": {
                "version_added": "83"
              },
              "chrome_android": "mirror",
              "edge": "mirror",
              "firefox": {
                "version_added": "148"
              },
              "firefox_android": "mirror",
              "oculus": "mirror",
              "opera": "mirror",
              "opera_android": "mirror",
              "safari": {
                "version_added": "26"
              },
              "safari_ios": "mirror",
              "samsunginternet_android": "mirror",
              "webview_android": "mirror",
              "webview_ios": "mirror"
            },
            "status": {
              "experimental": false,
              "standard_track": true,
              "deprecated": false
            }
          }
        },
        "escapes_lt_gt_in_attributes": {
          "__compat": {
            "description": "Serializes `<` and `>` in attributes as `&amp;lt;` and `&amp;gt;` (see [this spec issue](https://github.com/whatwg/html/issues/6235))",
            "support": {
              "chrome": {
                "version_added": "138"
              },
              "chrome_android": "mirror",
              "edge": "mirror",
              "firefox": {
                "version_added": "140"
              },
              "firefox_android": "mirror",
              "oculus": "mirror",
              "opera": "mirror",
              "opera_android": "mirror",
              "safari": {
                "version_added": "26"
              },
              "safari_ios": "mirror",
              "samsunginternet_android": "mirror",
              "webview_android": "mirror",
              "webview_ios": "mirror"
            },
            "status": {
              "experimental": false,
              "standard_track": false,
              "deprecated": false
            }
          }
        }
      },
      "mode": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/ShadowRoot/mode",
          "spec_url": "https://dom.spec.whatwg.org/#dom-shadowroot-mode",
          "tags": [
            "web-features:shadow-dom"
          ],
          "support": {
            "chrome": {
              "version_added": "53"
            },
            "chrome_android": "mirror",
            "edge": "mirror",
            "firefox": {
              "version_added": "63"
            },
            "firefox_android": "mirror",
            "oculus": "mirror",
            "opera": "mirror",
            "opera_android": "mirror",
            "safari": {
              "version_added": "10.1"
            },
            "safari_ios": "mirror",
            "samsunginternet_android": "mirror",
            "webview_android": "mirror",
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "pictureInPictureElement": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/ShadowRoot/pictureInPictureElement",
          "spec_url": "https://w3c.github.io/picture-in-picture/#dom-pictureinpictureevent-pictureinpicturewindow",
          "tags": [
            "web-features:picture-in-picture"
          ],
          "support": {
            "chrome": {
              "version_added": "69"
            },
            "chrome_android": {
              "version_added": "105"
            },
            "edge": "mirror",
            "firefox": {
              "version_added": false,
              "impl_url": "https://bugzil.la/1463402"
            },
            "firefox_android": "mirror",
            "oculus": "mirror",
            "opera": "mirror",
            "opera_android": "mirror",
            "safari": {
              "version_added": "13.1"
            },
            "safari_ios": "mirror",
            "samsunginternet_android": "mirror",
            "webview_android": "mirror",
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "pointerLockElement": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/ShadowRoot/pointerLockElement",
          "spec_url": "https://w3c.github.io/pointerlock/#dom-documentorshadowroot-pointerlockelement",
          "tags": [
            "web-features:pointer-lock"
          ],
          "support": {
            "chrome": {
              "version_added": "53"
            },
            "chrome_android": {
              "version_added": false,
              "impl_url": "https://crbug.com/40290045"
            },
            "edge": "mirror",
            "firefox": {
              "version_added": "63"
            },
            "firefox_android": "mirror",
            "oculus": "mirror",
            "opera": "mirror",
            "opera_android": "mirror",
            "safari": {
              "version_added": "10.1"
            },
            "safari_ios": {
              "version_added": false
            },
            "samsunginternet_android": "mirror",
            "webview_android": "mirror",
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "referenceTarget": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/ShadowRoot#shadowroot.referencetarget",
          "tags": [
            "web-features:referencetarget"
          ],
          "support": {
            "chrome": {
              "version_added": "133",
              "flags": [
                {
                  "type": "preference",
                  "name": "#enable-experimental-web-platform-features",
                  "value_to_set": "true"
                }
              ]
            },
            "chrome_android": "mirror",
            "edge": "mirror",
            "firefox": {
              "version_added": "144",
              "flags": [
                {
                  "type": "preference",
                  "name": "dom.shadowdom.referenceTarget.enabled",
                  "value_to_set": "true"
                }
              ]
            },
            "firefox_android": "mirror",
            "oculus": "mirror",
            "opera": "mirror",
            "opera_android": "mirror",
            "safari": {
              "version_added": "26",
              "flags": [
                {
                  "type": "preference",
                  "name": "referenceTarget",
                  "value_to_set": "true"
                },
                {
                  "type": "preference",
                  "name": "referenceTarget support for aria-owns",
                  "value_to_set": "true"
                }
              ]
            },
            "safari_ios": "mirror",
            "samsunginternet_android": "mirror",
            "webview_android": "mirror",
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": true,
            "standard_track": false,
            "deprecated": false
          }
        }
      },
      "serializable": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/ShadowRoot/serializable",
          "spec_url": "https://dom.spec.whatwg.org/#dom-shadowroot-serializable",
          "tags": [
            "web-features:shadow-dom"
          ],
          "support": {
            "chrome": {
              "version_added": "125"
            },
            "chrome_android": "mirror",
            "edge": "mirror",
            "firefox": {
              "version_added": "128"
            },
            "firefox_android": "mirror",
            "oculus": "mirror",
            "opera": "mirror",
            "opera_android": "mirror",
            "safari": {
              "version_added": "18"
            },
            "safari_ios": "mirror",
            "samsunginternet_android": "mirror",
            "webview_android": "mirror",
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "setHTML": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/ShadowRoot/setHTML",
          "spec_url": "https://wicg.github.io/sanitizer-api/#dom-shadowroot-sethtml",
          "tags": [
            "web-features:sanitizer"
          ],
          "support": {
            "chrome": {
              "version_added": false
            },
            "chrome_android": "mirror",
            "edge": "mirror",
            "firefox": {
              "version_added": "148"
            },
            "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": true,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "setHTMLUnsafe": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/ShadowRoot/setHTMLUnsafe",
          "spec_url": "https://html.spec.whatwg.org/multipage/dynamic-markup-insertion.html#dom-shadowroot-sethtmlunsafe",
          "tags": [
            "web-features:parse-html-unsafe"
          ],
          "support": {
            "chrome": {
              "version_added": "124"
            },
            "chrome_android": "mirror",
            "edge": "mirror",
            "firefox": {
              "version_added": "123"
            },
            "firefox_android": "mirror",
            "oculus": "mirror",
            "opera": "mirror",
            "opera_android": "mirror",
            "safari": [
              {
                "version_added": "26"
              },
              {
                "version_added": "17.4",
                "version_removed": "26",
                "partial_implementation": true,
                "notes": "If there are custom elements in a declarative shadow root in the parsed HTML, then the elements' constructors and `connectedCallback()` methods are not called ([bug 296420](https://webkit.org/b/296420))."
              }
            ],
            "safari_ios": "mirror",
            "samsunginternet_android": "mirror",
            "webview_android": "mirror",
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        },
        "enforces_trusted_types": {
          "__compat": {
            "description": "Requires `TrustedHTML` instance when trusted types are enforced",
            "spec_url": "https://w3c.github.io/trusted-types/dist/spec/#dom-xss-injection-sinks",
            "tags": [
              "web-features:trusted-types"
            ],
            "support": {
              "chrome": {
                "version_added": "124"
              },
              "chrome_android": "mirror",
              "edge": "mirror",
              "firefox": {
                "version_added": "148"
              },
              "firefox_android": "mirror",
              "oculus": "mirror",
              "opera": "mirror",
              "opera_android": "mirror",
              "safari": {
                "version_added": "26"
              },
              "safari_ios": "mirror",
              "samsunginternet_android": "mirror",
              "webview_android": "mirror",
              "webview_ios": "mirror"
            },
            "status": {
              "experimental": false,
              "standard_track": true,
              "deprecated": false
            }
          }
        },
        "options_sanitizer_parameter": {
          "__compat": {
            "description": "`options.sanitizer` parameter",
            "spec_url": "https://wicg.github.io/sanitizer-api/#dom-shadowroot-sethtmlunsafe",
            "support": {
              "chrome": {
                "version_added": false
              },
              "chrome_android": "mirror",
              "edge": "mirror",
              "firefox": {
                "version_added": "preview"
              },
              "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": true,
              "standard_track": true,
              "deprecated": false
            }
          }
        }
      },
      "slotAssignment": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/ShadowRoot/slotAssignment",
          "spec_url": "https://dom.spec.whatwg.org/#dom-shadowroot-slotassignment",
          "tags": [
            "web-features:slot-assign"
          ],
          "support": {
            "chrome": {
              "version_added": "86"
            },
            "chrome_android": "mirror",
            "edge": "mirror",
            "firefox": {
              "version_added": "92"
            },
            "firefox_android": "mirror",
            "oculus": "mirror",
            "opera": "mirror",
            "opera_android": "mirror",
            "safari": {
              "version_added": "16.4"
            },
            "safari_ios": "mirror",
            "samsunginternet_android": "mirror",
            "webview_android": "mirror",
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "styleSheets": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/ShadowRoot/styleSheets",
          "spec_url": "https://drafts.csswg.org/cssom/#dom-documentorshadowroot-stylesheets",
          "tags": [
            "web-features:css-object-model"
          ],
          "support": {
            "chrome": {
              "version_added": "53"
            },
            "chrome_android": "mirror",
            "edge": "mirror",
            "firefox": {
              "version_added": "63"
            },
            "firefox_android": "mirror",
            "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
          }
        }
      }
    }
  }
}