{
  "javascript": {
    "operators": {
      "class": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Operators/class",
          "spec_url": "https://tc39.es/ecma262/#sec-class-definitions",
          "support": {
            "chrome": {
              "version_added": "42"
            },
            "chrome_android": {
              "version_added": "42"
            },
            "edge": {
              "version_added": "13"
            },
            "firefox": {
              "version_added": "45"
            },
            "firefox_android": {
              "version_added": "45"
            },
            "ie": {
              "version_added": false
            },
            "nodejs": [
              {
                "version_added": "6.0.0"
              },
              {
                "version_added": "5.0.0",
                "flags": [
                  {
                    "type": "runtime_flag",
                    "name": "--harmony"
                  }
                ]
              }
            ],
            "opera": {
              "version_added": "29"
            },
            "opera_android": {
              "version_added": "29"
            },
            "safari": {
              "version_added": "7"
            },
            "safari_ios": {
              "version_added": "7"
            },
            "samsunginternet_android": {
              "version_added": "4.0"
            },
            "webview_android": {
              "version_added": "42"
            }
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      }
    }
  }
}