{
  "javascript": {
    "builtins": {
      "Boolean": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Boolean",
          "spec_url": "https://tc39.es/ecma262/#sec-boolean-objects",
          "support": {
            "chrome": {
              "version_added": "1"
            },
            "chrome_android": {
              "version_added": "18"
            },
            "edge": {
              "version_added": "12"
            },
            "firefox": {
              "version_added": "1"
            },
            "firefox_android": {
              "version_added": "4"
            },
            "ie": {
              "version_added": "3"
            },
            "nodejs": {
              "version_added": "0.1.100"
            },
            "opera": {
              "version_added": "3"
            },
            "opera_android": {
              "version_added": "10.1"
            },
            "safari": {
              "version_added": "1"
            },
            "safari_ios": {
              "version_added": "1"
            },
            "samsunginternet_android": {
              "version_added": "1.0"
            },
            "webview_android": {
              "version_added": "1"
            }
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        },
        "Boolean": {
          "__compat": {
            "description": "<code>Boolean()</code> constructor",
            "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Boolean/Boolean",
            "spec_url": "https://tc39.es/ecma262/#sec-boolean-constructor",
            "support": {
              "chrome": {
                "version_added": "1"
              },
              "chrome_android": {
                "version_added": "18"
              },
              "edge": {
                "version_added": "12"
              },
              "firefox": {
                "version_added": "1"
              },
              "firefox_android": {
                "version_added": "4"
              },
              "ie": {
                "version_added": "3"
              },
              "nodejs": {
                "version_added": "0.1.100"
              },
              "opera": {
                "version_added": "4"
              },
              "opera_android": {
                "version_added": "10.1"
              },
              "safari": {
                "version_added": "1"
              },
              "safari_ios": {
                "version_added": "1"
              },
              "samsunginternet_android": {
                "version_added": "1.0"
              },
              "webview_android": {
                "version_added": "1"
              }
            },
            "status": {
              "experimental": false,
              "standard_track": true,
              "deprecated": false
            }
          }
        },
        "toSource": {
          "__compat": {
            "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Boolean/toSource",
            "support": {
              "chrome": {
                "version_added": false
              },
              "chrome_android": {
                "version_added": false
              },
              "edge": {
                "version_added": false
              },
              "firefox": {
                "version_added": "1",
                "version_removed": "74",
                "notes": "Starting in Firefox 74, <code>toSource()</code> is no longer available for use by web content. It is still allowed for internal and privileged code."
              },
              "firefox_android": {
                "version_added": "4"
              },
              "ie": {
                "version_added": false
              },
              "nodejs": {
                "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": false,
              "standard_track": false,
              "deprecated": false
            }
          }
        },
        "toString": {
          "__compat": {
            "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Boolean/toString",
            "spec_url": "https://tc39.es/ecma262/#sec-boolean.prototype.tostring",
            "support": {
              "chrome": {
                "version_added": "1"
              },
              "chrome_android": {
                "version_added": "18"
              },
              "edge": {
                "version_added": "12"
              },
              "firefox": {
                "version_added": "1"
              },
              "firefox_android": {
                "version_added": "4"
              },
              "ie": {
                "version_added": "3"
              },
              "nodejs": {
                "version_added": "0.1.100"
              },
              "opera": {
                "version_added": "4"
              },
              "opera_android": {
                "version_added": "10.1"
              },
              "safari": {
                "version_added": "1"
              },
              "safari_ios": {
                "version_added": "1"
              },
              "samsunginternet_android": {
                "version_added": "1.0"
              },
              "webview_android": {
                "version_added": "1"
              }
            },
            "status": {
              "experimental": false,
              "standard_track": true,
              "deprecated": false
            }
          }
        },
        "valueOf": {
          "__compat": {
            "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Boolean/valueOf",
            "spec_url": "https://tc39.es/ecma262/#sec-boolean.prototype.valueof",
            "support": {
              "chrome": {
                "version_added": "1"
              },
              "chrome_android": {
                "version_added": "18"
              },
              "edge": {
                "version_added": "12"
              },
              "firefox": {
                "version_added": "1"
              },
              "firefox_android": {
                "version_added": "4"
              },
              "ie": {
                "version_added": "4"
              },
              "nodejs": {
                "version_added": "0.1.100"
              },
              "opera": {
                "version_added": "4"
              },
              "opera_android": {
                "version_added": "10.1"
              },
              "safari": {
                "version_added": "1"
              },
              "safari_ios": {
                "version_added": "1"
              },
              "samsunginternet_android": {
                "version_added": "1.0"
              },
              "webview_android": {
                "version_added": "1"
              }
            },
            "status": {
              "experimental": false,
              "standard_track": true,
              "deprecated": false
            }
          }
        }
      }
    }
  }
}