{
  "api": {
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      "__compat": {
        "mdn_url": "https://developer.mozilla.org/docs/Web/API/Animation",
        "support": {
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            {
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            },
            {
              "alternative_name": "AnimationPlayer",
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              "version_removed": "44"
            }
          ],
          "chrome_android": [
            {
              "version_added": "44"
            },
            {
              "alternative_name": "AnimationPlayer",
              "version_added": "39",
              "version_removed": "44"
            }
          ],
          "edge": {
            "version_added": null
          },
          "edge_mobile": {
            "version_added": null
          },
          "firefox": {
            "version_added": "48"
          },
          "firefox_android": {
            "version_added": "48"
          },
          "ie": {
            "version_added": false
          },
          "opera": {
            "version_added": "26"
          },
          "opera_android": {
            "version_added": "26"
          },
          "safari": {
            "version_added": false
          },
          "safari_ios": {
            "version_added": false
          },
          "samsunginternet_android": {
            "version_added": "4.0"
          },
          "webview_android": [
            {
              "version_added": "44"
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            {
              "alternative_name": "AnimationPlayer",
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              "version_removed": "44"
            }
          ]
        },
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          "experimental": true,
          "standard_track": true,
          "deprecated": false
        }
      },
      "Animation": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/Animation/Animation",
          "description": "<code>Animation()</code> constructor",
          "support": {
            "chrome": {
              "version_added": "61"
            },
            "chrome_android": {
              "version_added": "61"
            },
            "edge": {
              "version_added": null
            },
            "edge_mobile": {
              "version_added": null
            },
            "firefox": [
              {
                "version_added": "48"
              },
              {
                "version_added": "46",
                "version_removed": "48",
                "flags": [
                  {
                    "type": "preference",
                    "name": "dom.animations-api.core.enabled",
                    "value_to_set": "true"
                  }
                ]
              }
            ],
            "firefox_android": [
              {
                "version_added": "48"
              },
              {
                "version_added": "46",
                "version_removed": "48",
                "flags": [
                  {
                    "type": "preference",
                    "name": "dom.animations-api.core.enabled",
                    "value_to_set": "true"
                  }
                ]
              }
            ],
            "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": false
            },
            "webview_android": {
              "version_added": "61"
            }
          },
          "status": {
            "experimental": true,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "cancel": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/Animation/cancel",
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            "chrome": {
              "version_added": "39"
            },
            "chrome_android": {
              "version_added": "39"
            },
            "edge": {
              "version_added": null
            },
            "edge_mobile": {
              "version_added": null
            },
            "firefox": [
              {
                "version_added": "48"
              },
              {
                "version_added": "40",
                "version_removed": "48",
                "flags": [
                  {
                    "type": "preference",
                    "name": "dom.animations-api.core.enabled",
                    "value_to_set": "true"
                  }
                ]
              }
            ],
            "firefox_android": [
              {
                "version_added": "48"
              },
              {
                "version_added": "40",
                "version_removed": "48",
                "flags": [
                  {
                    "type": "preference",
                    "name": "dom.animations-api.core.enabled",
                    "value_to_set": "true"
                  }
                ]
              }
            ],
            "ie": {
              "version_added": false
            },
            "opera": {
              "version_added": "26"
            },
            "opera_android": {
              "version_added": "26"
            },
            "safari": {
              "version_added": false
            },
            "safari_ios": {
              "version_added": false
            },
            "samsunginternet_android": {
              "version_added": "4.0"
            },
            "webview_android": {
              "version_added": "39"
            }
          },
          "status": {
            "experimental": true,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "currentTime": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/Animation/currentTime",
          "support": {
            "chrome": {
              "version_added": "39"
            },
            "chrome_android": {
              "version_added": "39"
            },
            "edge": {
              "version_added": null
            },
            "edge_mobile": {
              "version_added": null
            },
            "firefox": [
              {
                "version_added": "48"
              },
              {
                "version_added": "40",
                "version_removed": "48",
                "flags": [
                  {
                    "type": "preference",
                    "name": "dom.animations-api.core.enabled",
                    "value_to_set": "true"
                  }
                ]
              }
            ],
            "firefox_android": [
              {
                "version_added": "48"
              },
              {
                "version_added": "40",
                "version_removed": "48",
                "flags": [
                  {
                    "type": "preference",
                    "name": "dom.animations-api.core.enabled",
                    "value_to_set": "true"
                  }
                ]
              }
            ],
            "ie": {
              "version_added": false
            },
            "opera": {
              "version_added": "26"
            },
            "opera_android": {
              "version_added": "26"
            },
            "safari": {
              "version_added": false
            },
            "safari_ios": {
              "version_added": false
            },
            "samsunginternet_android": {
              "version_added": "4.0"
            },
            "webview_android": {
              "version_added": "39"
            }
          },
          "status": {
            "experimental": true,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "effect": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/Animation/effect",
          "support": {
            "chrome": {
              "version_added": false
            },
            "chrome_android": {
              "version_added": false
            },
            "edge": {
              "version_added": null
            },
            "edge_mobile": {
              "version_added": null
            },
            "firefox": [
              {
                "version_added": "63"
              },
              {
                "version_added": "48",
                "flags": [
                  {
                    "type": "preference",
                    "name": "dom.animations-api.core.enabled",
                    "value_to_set": "true"
                  }
                ],
                "notes": "This property is supported in Firefox 48 but is read-only. It became writable in Firefox 51."
              }
            ],
            "firefox_android": [
              {
                "version_added": "63"
              },
              {
                "version_added": "48",
                "flags": [
                  {
                    "type": "preference",
                    "name": "dom.animations-api.core.enabled",
                    "value_to_set": "true"
                  }
                ],
                "notes": "This property is supported in Firefox 48 but is read-only. It became writable in Firefox 51."
              }
            ],
            "ie": {
              "version_added": false
            },
            "opera": {
              "version_added": false
            },
            "opera_android": {
              "version_added": false
            },
            "safari": {
              "version_added": false
            },
            "safari_ios": {
              "version_added": false
            },
            "samsunginternet_android": {
              "version_added": false
            },
            "webview_android": {
              "version_added": false
            }
          },
          "status": {
            "experimental": true,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "finish": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/Animation/finish",
          "support": {
            "chrome": {
              "version_added": "39"
            },
            "chrome_android": {
              "version_added": "39"
            },
            "edge": {
              "version_added": null
            },
            "edge_mobile": {
              "version_added": null
            },
            "firefox": [
              {
                "version_added": "48"
              },
              {
                "version_added": "40",
                "version_removed": "48",
                "flags": [
                  {
                    "type": "preference",
                    "name": "dom.animations-api.core.enabled",
                    "value_to_set": "true"
                  }
                ]
              }
            ],
            "firefox_android": [
              {
                "version_added": "48"
              },
              {
                "version_added": "40",
                "version_removed": "48",
                "flags": [
                  {
                    "type": "preference",
                    "name": "dom.animations-api.core.enabled",
                    "value_to_set": "true"
                  }
                ]
              }
            ],
            "ie": {
              "version_added": false
            },
            "opera": {
              "version_added": "26"
            },
            "opera_android": {
              "version_added": "26"
            },
            "safari": {
              "version_added": false
            },
            "safari_ios": {
              "version_added": false
            },
            "samsunginternet_android": {
              "version_added": "4.0"
            },
            "webview_android": {
              "version_added": "39"
            }
          },
          "status": {
            "experimental": true,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "finished": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/Animation/finished",
          "support": {
            "chrome": {
              "version_added": false
            },
            "chrome_android": {
              "version_added": false
            },
            "edge": {
              "version_added": null
            },
            "edge_mobile": {
              "version_added": null
            },
            "firefox": [
              {
                "version_added": "63"
              },
              {
                "version_added": "40",
                "flags": [
                  {
                    "type": "preference",
                    "name": "dom.animations-api.core.enabled",
                    "value_to_set": "true"
                  }
                ]
              }
            ],
            "firefox_android": [
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              {
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                  {
                    "type": "preference",
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                ]
              }
            ],
            "ie": {
              "version_added": false
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            "opera": {
              "version_added": false
            },
            "opera_android": {
              "version_added": false
            },
            "safari": {
              "version_added": false
            },
            "safari_ios": {
              "version_added": false
            },
            "samsunginternet_android": {
              "version_added": false
            },
            "webview_android": {
              "version_added": false
            }
          },
          "status": {
            "experimental": true,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "id": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/Animation/id",
          "support": {
            "chrome": {
              "version_added": "50"
            },
            "chrome_android": {
              "version_added": "50"
            },
            "edge": {
              "version_added": null
            },
            "edge_mobile": {
              "version_added": null
            },
            "firefox": [
              {
                "version_added": "48"
              },
              {
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                "flags": [
                  {
                    "type": "preference",
                    "name": "dom.animations-api.core.enabled",
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                  }
                ]
              }
            ],
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              {
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                  {
                    "type": "preference",
                    "name": "dom.animations-api.core.enabled",
                    "value_to_set": "true"
                  }
                ]
              }
            ],
            "ie": {
              "version_added": false
            },
            "opera": {
              "version_added": "37"
            },
            "opera_android": {
              "version_added": "37"
            },
            "safari": {
              "version_added": false
            },
            "safari_ios": {
              "version_added": false
            },
            "samsunginternet_android": {
              "version_added": "5.0"
            },
            "webview_android": {
              "version_added": "50"
            }
          },
          "status": {
            "experimental": true,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "oncancel": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/Animation/oncancel",
          "support": {
            "chrome": {
              "version_added": "50"
            },
            "chrome_android": {
              "version_added": "50"
            },
            "edge": {
              "version_added": null
            },
            "edge_mobile": {
              "version_added": null
            },
            "firefox": [
              {
                "version_added": "48"
              },
              {
                "version_added": "42",
                "version_removed": "48",
                "flags": [
                  {
                    "type": "preference",
                    "name": "dom.animations-api.core.enabled",
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                  }
                ]
              }
            ],
            "firefox_android": [
              {
                "version_added": "48"
              },
              {
                "version_added": "42",
                "version_removed": "48",
                "flags": [
                  {
                    "type": "preference",
                    "name": "dom.animations-api.core.enabled",
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                  }
                ]
              }
            ],
            "ie": {
              "version_added": false
            },
            "opera": {
              "version_added": "37"
            },
            "opera_android": {
              "version_added": "37"
            },
            "safari": {
              "version_added": false
            },
            "safari_ios": {
              "version_added": false
            },
            "samsunginternet_android": {
              "version_added": "5.0"
            },
            "webview_android": {
              "version_added": "50"
            }
          },
          "status": {
            "experimental": true,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "onfinish": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/Animation/onfinish",
          "support": {
            "chrome": {
              "version_added": "39"
            },
            "chrome_android": {
              "version_added": "39"
            },
            "edge": {
              "version_added": null
            },
            "edge_mobile": {
              "version_added": null
            },
            "firefox": [
              {
                "version_added": "48"
              },
              {
                "version_added": "42",
                "version_removed": "48",
                "flags": [
                  {
                    "type": "preference",
                    "name": "dom.animations-api.core.enabled",
                    "value_to_set": "true"
                  }
                ]
              }
            ],
            "firefox_android": [
              {
                "version_added": "48"
              },
              {
                "version_added": "42",
                "version_removed": "48",
                "flags": [
                  {
                    "type": "preference",
                    "name": "dom.animations-api.core.enabled",
                    "value_to_set": "true"
                  }
                ]
              }
            ],
            "ie": {
              "version_added": false
            },
            "opera": {
              "version_added": "26"
            },
            "opera_android": {
              "version_added": "26"
            },
            "safari": {
              "version_added": false
            },
            "safari_ios": {
              "version_added": false
            },
            "samsunginternet_android": {
              "version_added": "4.0"
            },
            "webview_android": {
              "version_added": "39"
            }
          },
          "status": {
            "experimental": true,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "pause": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/Animation/pause",
          "support": {
            "chrome": {
              "version_added": "39"
            },
            "chrome_android": {
              "version_added": "39"
            },
            "edge": {
              "version_added": null
            },
            "edge_mobile": {
              "version_added": null
            },
            "firefox": [
              {
                "version_added": "48"
              },
              {
                "version_added": "36",
                "version_removed": "48",
                "flags": [
                  {
                    "type": "preference",
                    "name": "dom.animations-api.core.enabled",
                    "value_to_set": "true"
                  }
                ]
              }
            ],
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              {
                "version_added": "48"
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              {
                "version_added": "36",
                "version_removed": "48",
                "flags": [
                  {
                    "type": "preference",
                    "name": "dom.animations-api.core.enabled",
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                  }
                ]
              }
            ],
            "ie": {
              "version_added": false
            },
            "opera": {
              "version_added": "26"
            },
            "opera_android": {
              "version_added": "26"
            },
            "safari": {
              "version_added": false
            },
            "safari_ios": {
              "version_added": false
            },
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              "version_added": "4.0"
            },
            "webview_android": {
              "version_added": "39"
            }
          },
          "status": {
            "experimental": true,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "pending": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/Animation/pending",
          "support": {
            "chrome": {
              "version_added": false
            },
            "chrome_android": {
              "version_added": false
            },
            "edge": {
              "version_added": null
            },
            "edge_mobile": {
              "version_added": null
            },
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              "version_added": "59",
              "notes": "Prior to version 59, the pending status was reported by a <code><strong>\"pending\"</strong></code> value returned from <a href='/docs/Web/API/Animation/playState'><code>Animation.playState</code></a>."
            },
            "firefox_android": {
              "version_added": "59",
              "notes": "Prior to version 59, the pending status was reported by a <code><strong>\"pending\"</strong></code> value returned from <a href='/docs/Web/API/Animation/playState'><code>Animation.playState</code></a>."
            },
            "ie": {
              "version_added": false
            },
            "opera": {
              "version_added": false
            },
            "opera_android": {
              "version_added": false
            },
            "safari": {
              "version_added": false
            },
            "safari_ios": {
              "version_added": false
            },
            "samsunginternet_android": {
              "version_added": false
            },
            "webview_android": {
              "version_added": false
            }
          },
          "status": {
            "experimental": true,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "play": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/Animation/play",
          "support": {
            "chrome": {
              "version_added": "39"
            },
            "chrome_android": {
              "version_added": "39"
            },
            "edge": {
              "version_added": null
            },
            "edge_mobile": {
              "version_added": null
            },
            "firefox": [
              {
                "version_added": "48"
              },
              {
                "version_added": "36",
                "version_removed": "48",
                "flags": [
                  {
                    "type": "preference",
                    "name": "dom.animations-api.core.enabled",
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                ]
              }
            ],
            "firefox_android": [
              {
                "version_added": "48"
              },
              {
                "version_added": "36",
                "version_removed": "48",
                "flags": [
                  {
                    "type": "preference",
                    "name": "dom.animations-api.core.enabled",
                    "value_to_set": "true"
                  }
                ]
              }
            ],
            "ie": {
              "version_added": false
            },
            "opera": {
              "version_added": "26"
            },
            "opera_android": {
              "version_added": "26"
            },
            "safari": {
              "version_added": false
            },
            "safari_ios": {
              "version_added": false
            },
            "samsunginternet_android": {
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            },
            "webview_android": {
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            }
          },
          "status": {
            "experimental": true,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "playbackRate": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/Animation/playbackRate",
          "support": {
            "chrome": {
              "version_added": "39"
            },
            "chrome_android": {
              "version_added": "39"
            },
            "edge": {
              "version_added": null
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            "edge_mobile": {
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            "firefox": [
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              {
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                "flags": [
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                    "type": "preference",
                    "name": "dom.animations-api.core.enabled",
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                ]
              }
            ],
            "firefox_android": [
              {
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              },
              {
                "version_added": "42",
                "version_removed": "48",
                "flags": [
                  {
                    "type": "preference",
                    "name": "dom.animations-api.core.enabled",
                    "value_to_set": "true"
                  }
                ]
              }
            ],
            "ie": {
              "version_added": false
            },
            "opera": {
              "version_added": "26"
            },
            "opera_android": {
              "version_added": "26"
            },
            "safari": {
              "version_added": false
            },
            "safari_ios": {
              "version_added": false
            },
            "samsunginternet_android": {
              "version_added": "4.0"
            },
            "webview_android": {
              "version_added": "39"
            }
          },
          "status": {
            "experimental": true,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "playState": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/Animation/playState",
          "support": {
            "chrome": {
              "version_added": "39",
              "notes": "Before Chrome 50/Opera 37, this property returned <code>idle</code> for an animation that had not yet started. Starting with Chrome 50/Opera 37, it shows <code>paused</code>."
            },
            "chrome_android": {
              "version_added": "39",
              "notes": "Before Chrome 50/Opera 37, this property returned <code>idle</code> for an animation that had not yet started. Starting with Chrome 50/Opera 37, it shows <code>paused</code>."
            },
            "edge": {
              "version_added": null
            },
            "edge_mobile": {
              "version_added": null
            },
            "firefox": [
              {
                "version_added": "48",
                "notes": "Prior to Firefox 59, this property returned <code>pending</code> for Animations with incomplete asynchronous operations but as of Firefox 59 this is indicated by the separate <a href='/docs/Web/API/Animation/pending'><code>Animation.pending</code></a> property. This reflects recent changes to the specification."
              },
              {
                "version_added": "36",
                "version_removed": "48",
                "flags": [
                  {
                    "type": "preference",
                    "name": "dom.animations-api.core.enabled",
                    "value_to_set": "true"
                  }
                ]
              }
            ],
            "firefox_android": [
              {
                "version_added": "48",
                "notes": "Prior to Firefox 59, this property returned <code>pending</code> for Animations with incomplete asynchronous operations but as of Firefox 59 this is indicated by the separate <a href='/docs/Web/API/Animation/pending'><code>Animation.pending</code></a> property. This reflects recent changes to the specification."
              },
              {
                "version_added": "36",
                "version_removed": "48",
                "flags": [
                  {
                    "type": "preference",
                    "name": "dom.animations-api.core.enabled",
                    "value_to_set": "true"
                  }
                ]
              }
            ],
            "ie": {
              "version_added": false
            },
            "opera": {
              "version_added": "26",
              "notes": "Before Chrome 50/Opera 37, this property returned <code>idle</code> for an animation that had not yet started. Starting with Chrome 50/Opera 37, it shows <code>paused</code>."
            },
            "opera_android": {
              "version_added": "26",
              "notes": "Before Chrome 50/Opera 37, this property returned <code>idle</code> for an animation that had not yet started. Starting with Chrome 50/Opera 37, it shows <code>paused</code>."
            },
            "safari": {
              "version_added": false
            },
            "safari_ios": {
              "version_added": false
            },
            "samsunginternet_android": {
              "version_added": "4.0"
            },
            "webview_android": {
              "version_added": "39",
              "notes": "Before Chrome 50/Opera 37, this property returned <code>idle</code> for an animation that had not yet started. Starting with Chrome 50/Opera 37, it shows <code>paused</code>."
            }
          },
          "status": {
            "experimental": true,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "ready": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/Animation/ready",
          "support": {
            "chrome": {
              "version_added": false
            },
            "chrome_android": {
              "version_added": false
            },
            "edge": {
              "version_added": null
            },
            "edge_mobile": {
              "version_added": null
            },
            "firefox": [
              {
                "version_added": "63"
              },
              {
                "version_added": "37",
                "flags": [
                  {
                    "type": "preference",
                    "name": "dom.animations-api.core.enabled",
                    "value_to_set": "true"
                  }
                ]
              }
            ],
            "firefox_android": [
              {
                "version_added": "63"
              },
              {
                "version_added": "37",
                "flags": [
                  {
                    "type": "preference",
                    "name": "dom.animations-api.core.enabled",
                    "value_to_set": "true"
                  }
                ]
              }
            ],
            "ie": {
              "version_added": false
            },
            "opera": {
              "version_added": false
            },
            "opera_android": {
              "version_added": false
            },
            "safari": {
              "version_added": false
            },
            "safari_ios": {
              "version_added": false
            },
            "samsunginternet_android": {
              "version_added": false
            },
            "webview_android": {
              "version_added": false
            }
          },
          "status": {
            "experimental": true,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "reverse": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/Animation/reverse",
          "support": {
            "chrome": {
              "version_added": "39"
            },
            "chrome_android": {
              "version_added": "39"
            },
            "edge": {
              "version_added": null
            },
            "edge_mobile": {
              "version_added": null
            },
            "firefox": [
              {
                "version_added": "48"
              },
              {
                "version_added": "42",
                "version_removed": "48",
                "flags": [
                  {
                    "type": "preference",
                    "name": "dom.animations-api.core.enabled",
                    "value_to_set": "true"
                  }
                ]
              }
            ],
            "firefox_android": [
              {
                "version_added": "48"
              },
              {
                "version_added": "42",
                "version_removed": "48",
                "flags": [
                  {
                    "type": "preference",
                    "name": "dom.animations-api.core.enabled",
                    "value_to_set": "true"
                  }
                ]
              }
            ],
            "ie": {
              "version_added": false
            },
            "opera": {
              "version_added": "26"
            },
            "opera_android": {
              "version_added": "26"
            },
            "safari": {
              "version_added": false
            },
            "safari_ios": {
              "version_added": false
            },
            "samsunginternet_android": {
              "version_added": "4.0"
            },
            "webview_android": {
              "version_added": "39"
            }
          },
          "status": {
            "experimental": true,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "startTime": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/Animation/startTime",
          "support": {
            "chrome": {
              "version_added": "39"
            },
            "chrome_android": {
              "version_added": "39"
            },
            "edge": {
              "version_added": null
            },
            "edge_mobile": {
              "version_added": null
            },
            "firefox": [
              {
                "version_added": "48"
              },
              {
                "version_added": "39",
                "version_removed": "48",
                "flags": [
                  {
                    "type": "preference",
                    "name": "dom.animations-api.core.enabled",
                    "value_to_set": "true"
                  }
                ]
              }
            ],
            "firefox_android": [
              {
                "version_added": "48"
              },
              {
                "version_added": "39",
                "version_removed": "48",
                "flags": [
                  {
                    "type": "preference",
                    "name": "dom.animations-api.core.enabled",
                    "value_to_set": "true"
                  }
                ]
              }
            ],
            "ie": {
              "version_added": false
            },
            "opera": {
              "version_added": "26"
            },
            "opera_android": {
              "version_added": "26"
            },
            "safari": {
              "version_added": false
            },
            "safari_ios": {
              "version_added": false
            },
            "samsunginternet_android": {
              "version_added": "4.0"
            },
            "webview_android": {
              "version_added": "39"
            }
          },
          "status": {
            "experimental": true,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "timeline": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/Animation/timeline",
          "support": {
            "chrome": {
              "version_added": false
            },
            "chrome_android": {
              "version_added": false
            },
            "edge": {
              "version_added": null
            },
            "edge_mobile": {
              "version_added": null
            },
            "firefox": [
              {
                "version_added": "63",
                "flags": [
                  {
                    "type": "preference",
                    "name": "dom.animations-api.timelines.enabled",
                    "value_to_set": "true"
                  }
                ]
              },
              {
                "version_added": "48",
                "version_removed": "63",
                "flags": [
                  {
                    "type": "preference",
                    "name": "dom.animations-api.core.enabled",
                    "value_to_set": "true"
                  }
                ],
                "notes": "This property is supported in Firefox 48 but is read-only. It became writable in Firefox 49."
              }
            ],
            "firefox_android": [
              {
                "version_added": "63",
                "flags": [
                  {
                    "type": "preference",
                    "name": "dom.animations-api.timelines.enabled",
                    "value_to_set": "true"
                  }
                ]
              },
              {
                "version_added": "48",
                "version_removed": "63",
                "flags": [
                  {
                    "type": "preference",
                    "name": "dom.animations-api.core.enabled",
                    "value_to_set": "true"
                  }
                ],
                "notes": "This property is supported in Firefox 48 but is read-only. It became writable in Firefox 49."
              }
            ],
            "ie": {
              "version_added": false
            },
            "opera": {
              "version_added": false
            },
            "opera_android": {
              "version_added": false
            },
            "safari": {
              "version_added": false
            },
            "safari_ios": {
              "version_added": false
            },
            "samsunginternet_android": {
              "version_added": false
            },
            "webview_android": {
              "version_added": false
            }
          },
          "status": {
            "experimental": true,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "updatePlaybackRate": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/Animation/updatePlaybackRate",
          "support": {
            "chrome": {
              "version_added": false
            },
            "chrome_android": {
              "version_added": false
            },
            "edge": {
              "version_added": false
            },
            "edge_mobile": {
              "version_added": false
            },
            "firefox": {
              "version_added": "60"
            },
            "firefox_android": {
              "version_added": "60"
            },
            "ie": {
              "version_added": false
            },
            "opera": {
              "version_added": false
            },
            "opera_android": {
              "version_added": false
            },
            "safari": {
              "version_added": false
            },
            "safari_ios": {
              "version_added": false
            },
            "samsunginternet_android": {
              "version_added": false
            },
            "webview_android": {
              "version_added": false
            }
          },
          "status": {
            "experimental": true,
            "standard_track": true,
            "deprecated": false
          }
        }
      }
    }
  }
}