{
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      "__compat": {
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          },
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          },
          "webview_ios": "mirror"
        },
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          "experimental": false,
          "standard_track": true,
          "deprecated": false
        }
      },
      "CustomEvent": {
        "__compat": {
          "description": "`CustomEvent()` constructor",
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/CustomEvent/CustomEvent",
          "spec_url": "https://dom.spec.whatwg.org/#ref-for-dom-customevent-customevent",
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            "web-features:events"
          ],
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            },
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            },
            "chrome_android": "mirror",
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            },
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            },
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            "webview_android": "mirror",
            "webview_ios": "mirror"
          },
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            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "worker_support": {
        "__compat": {
          "description": "Available in workers",
          "spec_url": "https://dom.spec.whatwg.org/#interface-customevent",
          "tags": [
            "web-features:events"
          ],
          "support": {
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            },
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            "chrome_android": "mirror",
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            },
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            "firefox": {
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            },
            "safari_ios": "mirror",
            "samsunginternet_android": "mirror",
            "webview_android": "mirror",
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "detail": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/CustomEvent/detail",
          "spec_url": "https://dom.spec.whatwg.org/#ref-for-dom-customevent-detail②",
          "tags": [
            "web-features:events"
          ],
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            },
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            },
            "webview_ios": "mirror"
          },
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            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
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        "__compat": {
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            "chrome_android": "mirror",
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              "version_added": false
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            },
            "firefox": {
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            },
            "firefox_android": "mirror",
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            },
            "nodejs": {
              "version_added": false
            },
            "oculus": "mirror",
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            },
            "opera_android": {
              "version_added": "11"
            },
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            },
            "safari_ios": {
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            },
            "samsunginternet_android": {
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            },
            "webview_android": {
              "version_added": "3"
            },
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": true
          }
        }
      }
    }
  }
}