{
  "api": {
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      "__compat": {
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          },
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            "version_added": null
          },
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          },
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            "version_added": false
          },
          "firefox_android": {
            "version_added": false
          },
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            "version_added": null
          },
          "opera": {
            "version_added": null
          },
          "opera_android": {
            "version_added": null
          },
          "safari": {
            "version_added": null
          },
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            "version_added": false
          },
          "samsunginternet_android": {
            "version_added": null
          },
          "webview_android": {
            "version_added": null
          }
        },
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        }
      },
      "TrackDefault": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/TrackDefaultList/TrackDefault",
          "support": {
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              "version_added": null
            },
            "chrome_android": {
              "version_added": null
            },
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              "version_added": "≤18"
            },
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              "version_added": false
            },
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              "version_added": false
            },
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              "version_added": null
            },
            "opera": {
              "version_added": null
            },
            "opera_android": {
              "version_added": null
            },
            "safari": {
              "version_added": null
            },
            "safari_ios": {
              "version_added": false
            },
            "samsunginternet_android": {
              "version_added": null
            },
            "webview_android": {
              "version_added": null
            }
          },
          "status": {
            "experimental": true,
            "standard_track": false,
            "deprecated": false
          }
        }
      },
      "TrackDefaultList": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/TrackDefaultList/TrackDefaultList",
          "description": "<code>TrackDefaultList()</code> constructor",
          "support": {
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              "version_added": null
            },
            "chrome_android": {
              "version_added": null
            },
            "edge": {
              "version_added": "≤18"
            },
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              "version_added": false
            },
            "firefox_android": {
              "version_added": false
            },
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              "version_added": null
            },
            "opera": {
              "version_added": null
            },
            "opera_android": {
              "version_added": null
            },
            "safari": {
              "version_added": null
            },
            "safari_ios": {
              "version_added": false
            },
            "samsunginternet_android": {
              "version_added": null
            },
            "webview_android": {
              "version_added": null
            }
          },
          "status": {
            "experimental": true,
            "standard_track": false,
            "deprecated": false
          }
        }
      },
      "length": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/TrackDefaultList/length",
          "support": {
            "chrome": {
              "version_added": null
            },
            "chrome_android": {
              "version_added": null
            },
            "edge": {
              "version_added": "≤18"
            },
            "firefox": {
              "version_added": false
            },
            "firefox_android": {
              "version_added": false
            },
            "ie": {
              "version_added": null
            },
            "opera": {
              "version_added": null
            },
            "opera_android": {
              "version_added": null
            },
            "safari": {
              "version_added": null
            },
            "safari_ios": {
              "version_added": false
            },
            "samsunginternet_android": {
              "version_added": null
            },
            "webview_android": {
              "version_added": null
            }
          },
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            "experimental": true,
            "standard_track": false,
            "deprecated": false
          }
        }
      }
    }
  }
}