{
  "javascript": {
    "operators": {
      "function": {
        "__compat": {
          "description": "`function` expression",
          "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Operators/function",
          "spec_url": "https://tc39.es/ecma262/multipage/ecmascript-language-functions-and-classes.html#sec-function-definitions",
          "tags": [
            "web-features:snapshot:ecmascript-1",
            "web-features:functions"
          ],
          "support": {
            "bun": {
              "version_added": "1.0.0"
            },
            "chrome": {
              "version_added": "1"
            },
            "chrome_android": "mirror",
            "deno": {
              "version_added": "1.0"
            },
            "edge": {
              "version_added": "12"
            },
            "firefox": {
              "version_added": "1"
            },
            "firefox_android": "mirror",
            "ie": {
              "version_added": "3"
            },
            "nodejs": {
              "version_added": "0.10.0"
            },
            "oculus": "mirror",
            "opera": {
              "version_added": "3"
            },
            "opera_android": {
              "version_added": "10.1"
            },
            "safari": {
              "version_added": "1"
            },
            "safari_ios": "mirror",
            "samsunginternet_android": "mirror",
            "webview_android": "mirror",
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        },
        "trailing_comma": {
          "__compat": {
            "description": "Trailing comma in parameters",
            "tags": [
              "web-features:functions"
            ],
            "support": {
              "bun": {
                "version_added": "1.0.0"
              },
              "chrome": {
                "version_added": "58"
              },
              "chrome_android": "mirror",
              "deno": {
                "version_added": "1.0"
              },
              "edge": {
                "version_added": "14"
              },
              "firefox": {
                "version_added": "52"
              },
              "firefox_android": "mirror",
              "nodejs": {
                "version_added": "8.0.0"
              },
              "oculus": "mirror",
              "opera": "mirror",
              "opera_android": "mirror",
              "safari": {
                "version_added": "10"
              },
              "safari_ios": "mirror",
              "samsunginternet_android": "mirror",
              "webview_android": "mirror",
              "webview_ios": "mirror"
            },
            "status": {
              "experimental": false,
              "standard_track": true,
              "deprecated": false
            }
          }
        }
      }
    }
  }
}