{
  "api": {
    "Selection": {
      "__compat": {
        "mdn_url": "https://developer.mozilla.org/docs/Web/API/Selection",
        "spec_url": "https://w3c.github.io/selection-api/#selection-interface",
        "tags": [
          "web-features:selection-api"
        ],
        "support": {
          "chrome": {
            "version_added": "1"
          },
          "chrome_android": "mirror",
          "edge": {
            "version_added": "12"
          },
          "firefox": {
            "version_added": "1"
          },
          "firefox_android": "mirror",
          "ie": {
            "version_added": "9"
          },
          "oculus": "mirror",
          "opera": {
            "version_added": "9"
          },
          "opera_android": {
            "version_added": "10.1"
          },
          "safari": {
            "version_added": "1.3"
          },
          "safari_ios": "mirror",
          "samsunginternet_android": "mirror",
          "webview_android": "mirror",
          "webview_ios": "mirror"
        },
        "status": {
          "experimental": false,
          "standard_track": true,
          "deprecated": false
        }
      },
      "addRange": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/Selection/addRange",
          "spec_url": "https://w3c.github.io/selection-api/#dom-selection-addrange",
          "tags": [
            "web-features:selection-api"
          ],
          "support": {
            "chrome": {
              "version_added": "1"
            },
            "chrome_android": "mirror",
            "edge": {
              "version_added": "12"
            },
            "firefox": {
              "version_added": "1"
            },
            "firefox_android": "mirror",
            "ie": {
              "version_added": "9"
            },
            "oculus": "mirror",
            "opera": {
              "version_added": "≤12.1"
            },
            "opera_android": {
              "version_added": "≤12.1"
            },
            "safari": {
              "version_added": "3"
            },
            "safari_ios": {
              "version_added": "1"
            },
            "samsunginternet_android": "mirror",
            "webview_android": "mirror",
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "anchorNode": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/Selection/anchorNode",
          "spec_url": "https://w3c.github.io/selection-api/#dom-selection-anchornode",
          "tags": [
            "web-features:selection-api"
          ],
          "support": {
            "chrome": {
              "version_added": "1"
            },
            "chrome_android": "mirror",
            "edge": {
              "version_added": "12"
            },
            "firefox": {
              "version_added": "1"
            },
            "firefox_android": "mirror",
            "ie": {
              "version_added": "9"
            },
            "oculus": "mirror",
            "opera": {
              "version_added": "≤12.1"
            },
            "opera_android": {
              "version_added": "≤12.1"
            },
            "safari": {
              "version_added": "1.3"
            },
            "safari_ios": "mirror",
            "samsunginternet_android": "mirror",
            "webview_android": "mirror",
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "anchorOffset": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/Selection/anchorOffset",
          "spec_url": "https://w3c.github.io/selection-api/#dom-selection-anchoroffset",
          "tags": [
            "web-features:selection-api"
          ],
          "support": {
            "chrome": {
              "version_added": "1"
            },
            "chrome_android": "mirror",
            "edge": {
              "version_added": "12"
            },
            "firefox": {
              "version_added": "1"
            },
            "firefox_android": "mirror",
            "ie": {
              "version_added": "9"
            },
            "oculus": "mirror",
            "opera": {
              "version_added": "≤12.1"
            },
            "opera_android": {
              "version_added": "≤12.1"
            },
            "safari": {
              "version_added": "1.3"
            },
            "safari_ios": "mirror",
            "samsunginternet_android": "mirror",
            "webview_android": "mirror",
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "collapse": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/Selection/collapse",
          "spec_url": "https://w3c.github.io/selection-api/#dom-selection-collapse",
          "tags": [
            "web-features:selection-api"
          ],
          "support": {
            "chrome": {
              "version_added": "1"
            },
            "chrome_android": "mirror",
            "edge": {
              "version_added": "12"
            },
            "firefox": {
              "version_added": "1"
            },
            "firefox_android": "mirror",
            "ie": {
              "version_added": "9"
            },
            "oculus": "mirror",
            "opera": {
              "version_added": "≤12.1"
            },
            "opera_android": {
              "version_added": "≤12.1"
            },
            "safari": {
              "version_added": "1.3"
            },
            "safari_ios": "mirror",
            "samsunginternet_android": "mirror",
            "webview_android": "mirror",
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        },
        "accepts_nodes_in_shadow_trees": {
          "__compat": {
            "description": "Accepts `node` parameter in any tree/shadow tree",
            "support": {
              "chrome": {
                "version_added": false
              },
              "chrome_android": "mirror",
              "edge": "mirror",
              "firefox": {
                "version_added": "preview"
              },
              "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
            }
          }
        },
        "node_parameter_nullable": {
          "__compat": {
            "description": "`node` parameter is nullable",
            "support": {
              "chrome": {
                "version_added": "39"
              },
              "chrome_android": "mirror",
              "edge": {
                "version_added": "≤79"
              },
              "firefox": {
                "version_added": "55"
              },
              "firefox_android": "mirror",
              "ie": {
                "version_added": false
              },
              "oculus": "mirror",
              "opera": "mirror",
              "opera_android": "mirror",
              "safari": {
                "version_added": "1.3"
              },
              "safari_ios": "mirror",
              "samsunginternet_android": "mirror",
              "webview_android": "mirror",
              "webview_ios": "mirror"
            },
            "status": {
              "experimental": false,
              "standard_track": true,
              "deprecated": false
            }
          }
        },
        "offset_parameter_optional": {
          "__compat": {
            "description": "`offset` parameter is optional",
            "support": {
              "chrome": {
                "version_added": "1"
              },
              "chrome_android": "mirror",
              "edge": {
                "version_added": "≤79"
              },
              "firefox": {
                "version_added": "55"
              },
              "firefox_android": "mirror",
              "ie": {
                "version_added": false
              },
              "oculus": "mirror",
              "opera": {
                "version_added": "≤15"
              },
              "opera_android": {
                "version_added": "≤14"
              },
              "safari": {
                "version_added": "1.3"
              },
              "safari_ios": "mirror",
              "samsunginternet_android": "mirror",
              "webview_android": "mirror",
              "webview_ios": "mirror"
            },
            "status": {
              "experimental": false,
              "standard_track": true,
              "deprecated": false
            }
          }
        }
      },
      "collapseToEnd": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/Selection/collapseToEnd",
          "spec_url": "https://w3c.github.io/selection-api/#dom-selection-collapsetoend",
          "tags": [
            "web-features:selection-api"
          ],
          "support": {
            "chrome": {
              "version_added": "1"
            },
            "chrome_android": "mirror",
            "edge": {
              "version_added": "12"
            },
            "firefox": {
              "version_added": "1"
            },
            "firefox_android": "mirror",
            "ie": {
              "version_added": "9"
            },
            "oculus": "mirror",
            "opera": {
              "version_added": "≤12.1"
            },
            "opera_android": {
              "version_added": "≤12.1"
            },
            "safari": {
              "version_added": "1.3"
            },
            "safari_ios": "mirror",
            "samsunginternet_android": "mirror",
            "webview_android": "mirror",
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "collapseToStart": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/Selection/collapseToStart",
          "spec_url": "https://w3c.github.io/selection-api/#dom-selection-collapsetostart",
          "tags": [
            "web-features:selection-api"
          ],
          "support": {
            "chrome": {
              "version_added": "1"
            },
            "chrome_android": "mirror",
            "edge": {
              "version_added": "12"
            },
            "firefox": {
              "version_added": "1"
            },
            "firefox_android": "mirror",
            "ie": {
              "version_added": "9"
            },
            "oculus": "mirror",
            "opera": {
              "version_added": "≤12.1"
            },
            "opera_android": {
              "version_added": "≤12.1"
            },
            "safari": {
              "version_added": "1.3"
            },
            "safari_ios": "mirror",
            "samsunginternet_android": "mirror",
            "webview_android": "mirror",
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "containsNode": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/Selection/containsNode",
          "spec_url": "https://w3c.github.io/selection-api/#dom-selection-containsnode",
          "tags": [
            "web-features:selection-api"
          ],
          "support": {
            "chrome": {
              "version_added": "1"
            },
            "chrome_android": "mirror",
            "edge": {
              "version_added": "12"
            },
            "firefox": {
              "version_added": "1",
              "notes": "Before Firefox 35, the method didn't throw if `node` was `null`."
            },
            "firefox_android": "mirror",
            "ie": {
              "version_added": false
            },
            "oculus": "mirror",
            "opera": {
              "version_added": "≤12.1"
            },
            "opera_android": {
              "version_added": "≤12.1"
            },
            "safari": {
              "version_added": "3.1"
            },
            "safari_ios": "mirror",
            "samsunginternet_android": "mirror",
            "webview_android": "mirror",
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        },
        "partialContainment_parameter_optional": {
          "__compat": {
            "description": "`partialContainment` parameter is optional",
            "support": {
              "chrome": {
                "version_added": "1"
              },
              "chrome_android": "mirror",
              "edge": {
                "version_added": "≤79"
              },
              "firefox": {
                "version_added": "55"
              },
              "firefox_android": "mirror",
              "ie": {
                "version_added": false
              },
              "oculus": "mirror",
              "opera": {
                "version_added": "≤15"
              },
              "opera_android": {
                "version_added": "≤14"
              },
              "safari": {
                "version_added": "3.1"
              },
              "safari_ios": "mirror",
              "samsunginternet_android": "mirror",
              "webview_android": {
                "version_added": "≤37"
              },
              "webview_ios": "mirror"
            },
            "status": {
              "experimental": false,
              "standard_track": true,
              "deprecated": false
            }
          }
        }
      },
      "deleteFromDocument": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/Selection/deleteFromDocument",
          "spec_url": "https://w3c.github.io/selection-api/#dom-selection-deletefromdocument",
          "tags": [
            "web-features:selection-api"
          ],
          "support": {
            "chrome": {
              "version_added": "1"
            },
            "chrome_android": "mirror",
            "edge": {
              "version_added": "12"
            },
            "firefox": {
              "version_added": "1"
            },
            "firefox_android": "mirror",
            "ie": {
              "version_added": "9"
            },
            "oculus": "mirror",
            "opera": {
              "version_added": "≤12.1"
            },
            "opera_android": {
              "version_added": "≤12.1"
            },
            "safari": {
              "version_added": "3.1"
            },
            "safari_ios": "mirror",
            "samsunginternet_android": "mirror",
            "webview_android": "mirror",
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "direction": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/Selection/direction",
          "spec_url": "https://w3c.github.io/selection-api/#dom-selection-direction",
          "tags": [
            "web-features:selection-api"
          ],
          "support": {
            "chrome": {
              "version_added": false
            },
            "chrome_android": "mirror",
            "edge": "mirror",
            "firefox": {
              "version_added": "126"
            },
            "firefox_android": "mirror",
            "ie": {
              "version_added": false
            },
            "oculus": "mirror",
            "opera": "mirror",
            "opera_android": "mirror",
            "safari": {
              "version_added": "17"
            },
            "safari_ios": "mirror",
            "samsunginternet_android": "mirror",
            "webview_android": "mirror",
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "empty": {
        "__compat": {
          "description": "`empty()` as alias of `removeAllRanges()`",
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/Selection/empty",
          "spec_url": "https://w3c.github.io/selection-api/#dom-selection-removeallranges",
          "tags": [
            "web-features:selection-api"
          ],
          "support": {
            "chrome": {
              "version_added": "1"
            },
            "chrome_android": "mirror",
            "edge": {
              "version_added": "12"
            },
            "firefox": {
              "version_added": "55"
            },
            "firefox_android": "mirror",
            "ie": {
              "version_added": false
            },
            "oculus": "mirror",
            "opera": "mirror",
            "opera_android": "mirror",
            "safari": {
              "version_added": "1.3"
            },
            "safari_ios": "mirror",
            "samsunginternet_android": "mirror",
            "webview_android": "mirror",
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "extend": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/Selection/extend",
          "spec_url": "https://w3c.github.io/selection-api/#dom-selection-extend",
          "tags": [
            "web-features:selection-api"
          ],
          "support": {
            "chrome": {
              "version_added": "1"
            },
            "chrome_android": "mirror",
            "edge": {
              "version_added": "12"
            },
            "firefox": {
              "version_added": "1"
            },
            "firefox_android": "mirror",
            "ie": {
              "version_added": false
            },
            "oculus": "mirror",
            "opera": {
              "version_added": "≤12.1"
            },
            "opera_android": {
              "version_added": "≤12.1"
            },
            "safari": {
              "version_added": "3.1"
            },
            "safari_ios": "mirror",
            "samsunginternet_android": "mirror",
            "webview_android": "mirror",
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        },
        "accepts_nodes_in_shadow_trees": {
          "__compat": {
            "description": "Accepts `node` parameter in any tree/shadow tree",
            "support": {
              "chrome": {
                "version_added": false
              },
              "chrome_android": "mirror",
              "edge": "mirror",
              "firefox": {
                "version_added": "preview"
              },
              "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
            }
          }
        },
        "offset_parameter_optional": {
          "__compat": {
            "description": "`offset` parameter is optional",
            "support": {
              "chrome": {
                "version_added": "1"
              },
              "chrome_android": "mirror",
              "edge": {
                "version_added": "≤79"
              },
              "firefox": {
                "version_added": "55"
              },
              "firefox_android": "mirror",
              "ie": {
                "version_added": false
              },
              "oculus": "mirror",
              "opera": {
                "version_added": "≤15"
              },
              "opera_android": {
                "version_added": "≤14"
              },
              "safari": {
                "version_added": "3.1"
              },
              "safari_ios": "mirror",
              "samsunginternet_android": "mirror",
              "webview_android": {
                "version_added": "≤37"
              },
              "webview_ios": "mirror"
            },
            "status": {
              "experimental": false,
              "standard_track": true,
              "deprecated": false
            }
          }
        }
      },
      "focusNode": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/Selection/focusNode",
          "spec_url": "https://w3c.github.io/selection-api/#dom-selection-focusnode",
          "tags": [
            "web-features:selection-api"
          ],
          "support": {
            "chrome": {
              "version_added": "1"
            },
            "chrome_android": "mirror",
            "edge": {
              "version_added": "12"
            },
            "firefox": {
              "version_added": "1"
            },
            "firefox_android": "mirror",
            "ie": {
              "version_added": "9"
            },
            "oculus": "mirror",
            "opera": {
              "version_added": "≤12.1"
            },
            "opera_android": {
              "version_added": "≤12.1"
            },
            "safari": {
              "version_added": "1.3"
            },
            "safari_ios": "mirror",
            "samsunginternet_android": "mirror",
            "webview_android": "mirror",
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "focusOffset": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/Selection/focusOffset",
          "spec_url": "https://w3c.github.io/selection-api/#dom-selection-focusoffset",
          "tags": [
            "web-features:selection-api"
          ],
          "support": {
            "chrome": {
              "version_added": "1"
            },
            "chrome_android": "mirror",
            "edge": {
              "version_added": "12"
            },
            "firefox": {
              "version_added": "1"
            },
            "firefox_android": "mirror",
            "ie": {
              "version_added": "9"
            },
            "oculus": "mirror",
            "opera": {
              "version_added": "≤12.1"
            },
            "opera_android": {
              "version_added": "≤12.1"
            },
            "safari": {
              "version_added": "1.3"
            },
            "safari_ios": "mirror",
            "samsunginternet_android": "mirror",
            "webview_android": "mirror",
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "getComposedRanges": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/Selection/getComposedRanges",
          "spec_url": "https://w3c.github.io/selection-api/#dom-selection-getcomposedranges",
          "tags": [
            "web-features:composed-ranges"
          ],
          "support": {
            "chrome": {
              "version_added": false
            },
            "chrome_android": "mirror",
            "edge": "mirror",
            "firefox": {
              "version_added": "preview"
            },
            "firefox_android": "mirror",
            "ie": {
              "version_added": false
            },
            "oculus": "mirror",
            "opera": "mirror",
            "opera_android": "mirror",
            "safari": {
              "version_added": "17"
            },
            "safari_ios": "mirror",
            "samsunginternet_android": "mirror",
            "webview_android": "mirror",
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": true,
            "standard_track": true,
            "deprecated": false
          }
        },
        "returns_multiple_ranges": {
          "__compat": {
            "description": "Returned array can contain multiple ranges",
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              "chrome": {
                "version_added": false
              },
              "chrome_android": "mirror",
              "edge": "mirror",
              "firefox": {
                "version_added": "preview"
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              "firefox_android": "mirror",
              "ie": {
                "version_added": false
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              "standard_track": false,
              "deprecated": false
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        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/Selection/getRangeAt",
          "spec_url": "https://w3c.github.io/selection-api/#dom-selection-getrangeat",
          "tags": [
            "web-features:selection-api"
          ],
          "support": {
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              "version_added": "1"
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            "firefox": {
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            "safari": {
              "version_added": "3"
            },
            "safari_ios": {
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            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
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        }
      },
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        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/Selection/isCollapsed",
          "spec_url": "https://w3c.github.io/selection-api/#dom-selection-iscollapsed",
          "tags": [
            "web-features:selection-api"
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          "support": {
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              "version_added": "1"
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            "chrome_android": "mirror",
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            },
            "firefox": {
              "version_added": "1"
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            "firefox_android": "mirror",
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            "oculus": "mirror",
            "opera": {
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            },
            "opera_android": {
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            "safari": {
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            },
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            "samsunginternet_android": "mirror",
            "webview_android": "mirror",
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
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        }
      },
      "modify": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/Selection/modify",
          "spec_url": "https://w3c.github.io/selection-api/#dom-selection-modify",
          "tags": [
            "web-features:selection-api"
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          "support": {
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              "version_added": "1"
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            "chrome_android": "mirror",
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            "firefox": {
              "version_added": "4"
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            "firefox_android": "mirror",
            "ie": {
              "version_added": false
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          "status": {
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            "standard_track": true,
            "deprecated": false
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        }
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        "__compat": {
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          "spec_url": "https://w3c.github.io/selection-api/#dom-selection-rangecount",
          "tags": [
            "web-features:selection-api"
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          "support": {
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              "version_added": "1"
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            "firefox": {
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            },
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            "safari_ios": {
              "version_added": "1"
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            "samsunginternet_android": "mirror",
            "webview_android": "mirror",
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
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        }
      },
      "removeAllRanges": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/Selection/removeAllRanges",
          "spec_url": "https://w3c.github.io/selection-api/#dom-selection-removeallranges",
          "tags": [
            "web-features:selection-api"
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          "support": {
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              "version_added": "1"
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              "version_added": "12"
            },
            "firefox": {
              "version_added": "1"
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            "firefox_android": "mirror",
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            "opera_android": {
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            },
            "safari": {
              "version_added": "3"
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            "safari_ios": {
              "version_added": "1"
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            "samsunginternet_android": "mirror",
            "webview_android": "mirror",
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
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        }
      },
      "removeRange": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/Selection/removeRange",
          "spec_url": "https://w3c.github.io/selection-api/#dom-selection-removerange",
          "tags": [
            "web-features:selection-api"
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          "support": {
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              "version_added": "58"
            },
            "chrome_android": "mirror",
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              "version_added": "12"
            },
            "firefox": {
              "version_added": "1"
            },
            "firefox_android": "mirror",
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            "oculus": "mirror",
            "opera": [
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                "version_added": "45"
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              {
                "version_added": "≤12.1",
                "version_removed": "15"
              }
            ],
            "opera_android": [
              {
                "version_added": "43"
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              {
                "version_added": "≤12.1",
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            ],
            "safari": {
              "version_added": "17"
            },
            "safari_ios": "mirror",
            "samsunginternet_android": "mirror",
            "webview_android": "mirror",
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
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        }
      },
      "selectAllChildren": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/Selection/selectAllChildren",
          "spec_url": "https://w3c.github.io/selection-api/#dom-selection-selectallchildren",
          "tags": [
            "web-features:selection-api"
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          "support": {
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              "version_added": "1"
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            "firefox": {
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            "firefox_android": "mirror",
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            },
            "safari_ios": "mirror",
            "samsunginternet_android": "mirror",
            "webview_android": "mirror",
            "webview_ios": "mirror"
          },
          "status": {
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            "standard_track": true,
            "deprecated": false
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        }
      },
      "setBaseAndExtent": {
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          "spec_url": "https://w3c.github.io/selection-api/#dom-selection-setbaseandextent",
          "tags": [
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          "support": {
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            "firefox": {
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            "firefox_android": "mirror",
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            "samsunginternet_android": "mirror",
            "webview_android": "mirror",
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          "status": {
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            "standard_track": true,
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        },
        "accepts_nodes_in_shadow_trees": {
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              "chrome": {
                "version_added": false
              },
              "chrome_android": "mirror",
              "edge": "mirror",
              "firefox": {
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              "firefox_android": "mirror",
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              "oculus": "mirror",
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            "status": {
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              "standard_track": true,
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          }
        }
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      "setPosition": {
        "__compat": {
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            "firefox": {
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          },
          "status": {
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            "standard_track": true,
            "deprecated": false
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        }
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      "toString": {
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          "tags": [
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          "support": {
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            "chrome_android": "mirror",
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            "firefox": {
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          },
          "status": {
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            "standard_track": true,
            "deprecated": false
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        }
      },
      "type": {
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          "tags": [
            "web-features:selection-api"
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          "support": {
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            },
            "firefox": {
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            },
            "firefox_android": "mirror",
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            "samsunginternet_android": "mirror",
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          },
          "status": {
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            "standard_track": true,
            "deprecated": false
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        }
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  }
}