{
  "api": {
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          },
          "chrome_android": {
            "version_added": "57"
          },
          "edge": {
            "version_added": "79"
          },
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            {
              "version_added": "63"
            },
            {
              "version_added": "59",
              "version_removed": "63",
              "flags": [
                {
                  "type": "preference",
                  "name": "dom.webcomponents.shadowdom.enabled",
                  "value_to_set": "true"
                }
              ]
            }
          ],
          "firefox_android": [
            {
              "version_added": "63"
            },
            {
              "version_added": "59",
              "version_removed": "63",
              "flags": [
                {
                  "type": "preference",
                  "name": "dom.webcomponents.shadowdom.enabled",
                  "value_to_set": "true"
                }
              ]
            }
          ],
          "ie": {
            "version_added": false
          },
          "opera": {
            "version_added": "40"
          },
          "opera_android": {
            "version_added": "41"
          },
          "safari": {
            "version_added": "10.1"
          },
          "safari_ios": {
            "version_added": "10.3"
          },
          "samsunginternet_android": {
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          },
          "webview_android": {
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          }
        },
        "status": {
          "experimental": true,
          "standard_track": true,
          "deprecated": false
        }
      },
      "delegatesFocus": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/ShadowRoot/delegatesFocus",
          "support": {
            "chrome": {
              "version_added": "57"
            },
            "chrome_android": {
              "version_added": "57"
            },
            "edge": {
              "version_added": "79"
            },
            "firefox": {
              "version_added": null
            },
            "firefox_android": {
              "version_added": null
            },
            "ie": {
              "version_added": false
            },
            "opera": {
              "version_added": null
            },
            "opera_android": {
              "version_added": null
            },
            "safari": {
              "version_added": false
            },
            "safari_ios": {
              "version_added": false
            },
            "samsunginternet_android": {
              "version_added": "7.0"
            },
            "webview_android": {
              "version_added": "57"
            }
          },
          "status": {
            "experimental": true,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "documentorshadowroot": {
        "__compat": {
          "description": "Features included from the <a href='https://developer.mozilla.org/docs/Web/API/DocumentOrShadowRoot'><code>DocumentOrShadowRoot</code></a> mixin",
          "support": {
            "chrome": {
              "version_added": "57"
            },
            "chrome_android": {
              "version_added": "57"
            },
            "edge": {
              "version_added": "79"
            },
            "firefox": {
              "version_added": "63"
            },
            "firefox_android": {
              "version_added": "63"
            },
            "ie": {
              "version_added": false
            },
            "opera": {
              "version_added": "40"
            },
            "opera_android": {
              "version_added": "41"
            },
            "safari": {
              "version_added": false,
              "notes": "Features still implemented on the <a href='https://developer.mozilla.org/docs/Web/API/Document'>Document</a> interface"
            },
            "safari_ios": {
              "version_added": false,
              "notes": "Features still implemented on the <a href='https://developer.mozilla.org/docs/Web/API/Document'>Document</a> interface"
            },
            "samsunginternet_android": {
              "version_added": "6.0"
            },
            "webview_android": {
              "version_added": "57"
            }
          },
          "status": {
            "experimental": true,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "host": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/ShadowRoot/host",
          "support": {
            "chrome": {
              "version_added": "57"
            },
            "chrome_android": {
              "version_added": "57"
            },
            "edge": {
              "version_added": "79"
            },
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                "version_added": "63"
              },
              {
                "version_added": "59",
                "version_removed": "63",
                "flags": [
                  {
                    "type": "preference",
                    "name": "dom.webcomponents.shadowdom.enabled",
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                  }
                ]
              }
            ],
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              {
                "version_added": "63"
              },
              {
                "version_added": "59",
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                "flags": [
                  {
                    "type": "preference",
                    "name": "dom.webcomponents.shadowdom.enabled",
                    "value_to_set": "true"
                  }
                ]
              }
            ],
            "ie": {
              "version_added": false
            },
            "opera": {
              "version_added": "40"
            },
            "opera_android": {
              "version_added": "41"
            },
            "safari": {
              "version_added": "10.1"
            },
            "safari_ios": {
              "version_added": "10.3"
            },
            "samsunginternet_android": {
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            },
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            }
          },
          "status": {
            "experimental": true,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "innerHTML": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/ShadowRoot/innerHTML",
          "support": {
            "chrome": {
              "version_added": "57"
            },
            "chrome_android": {
              "version_added": "57"
            },
            "edge": {
              "version_added": "79"
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                "version_added": "63"
              },
              {
                "version_added": "59",
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                "flags": [
                  {
                    "type": "preference",
                    "name": "dom.webcomponents.shadowdom.enabled",
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                  }
                ]
              }
            ],
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              {
                "version_added": "63"
              },
              {
                "version_added": "59",
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                "flags": [
                  {
                    "type": "preference",
                    "name": "dom.webcomponents.shadowdom.enabled",
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                  }
                ]
              }
            ],
            "ie": {
              "version_added": false
            },
            "opera": {
              "version_added": "40"
            },
            "opera_android": {
              "version_added": "41"
            },
            "safari": {
              "version_added": "10.1"
            },
            "safari_ios": {
              "version_added": "10.3"
            },
            "samsunginternet_android": {
              "version_added": "6.0"
            },
            "webview_android": {
              "version_added": "57"
            }
          },
          "status": {
            "experimental": true,
            "standard_track": false,
            "deprecated": false
          }
        }
      },
      "mode": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/ShadowRoot/mode",
          "support": {
            "chrome": {
              "version_added": "57"
            },
            "chrome_android": {
              "version_added": "57"
            },
            "edge": {
              "version_added": "79"
            },
            "firefox": [
              {
                "version_added": "63"
              },
              {
                "version_added": "59",
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                "flags": [
                  {
                    "type": "preference",
                    "name": "dom.webcomponents.shadowdom.enabled",
                    "value_to_set": "true"
                  }
                ]
              }
            ],
            "firefox_android": [
              {
                "version_added": "63"
              },
              {
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                "flags": [
                  {
                    "type": "preference",
                    "name": "dom.webcomponents.shadowdom.enabled",
                    "value_to_set": "true"
                  }
                ]
              }
            ],
            "ie": {
              "version_added": false
            },
            "opera": {
              "version_added": "40"
            },
            "opera_android": {
              "version_added": "41"
            },
            "safari": {
              "version_added": "10.1"
            },
            "safari_ios": {
              "version_added": "10.3"
            },
            "samsunginternet_android": {
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            },
            "webview_android": {
              "version_added": "57"
            }
          },
          "status": {
            "experimental": true,
            "standard_track": true,
            "deprecated": false
          }
        }
      }
    }
  }
}