{
  "javascript": {
    "builtins": {
      "Set": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Set",
          "support": {
            "webview_android": {
              "version_added": "38"
            },
            "chrome": {
              "version_added": "38"
            },
            "chrome_android": {
              "version_added": "38"
            },
            "edge": {
              "version_added": "12"
            },
            "edge_mobile": {
              "version_added": "12"
            },
            "firefox": {
              "version_added": "13"
            },
            "firefox_android": {
              "version_added": "14"
            },
            "ie": {
              "version_added": "11"
            },
            "nodejs": {
              "version_added": true
            },
            "opera": {
              "version_added": "25"
            },
            "opera_android": {
              "version_added": "25"
            },
            "safari": {
              "version_added": "8"
            },
            "safari_ios": {
              "version_added": "8"
            },
            "samsunginternet_android": {
              "version_added": true
            }
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        },
        "set_iterable": {
          "__compat": {
            "description": "<code>new Set(iterable)</code>",
            "support": {
              "webview_android": {
                "version_added": "38"
              },
              "chrome": {
                "version_added": "38"
              },
              "chrome_android": {
                "version_added": "38"
              },
              "edge": {
                "version_added": "12"
              },
              "edge_mobile": {
                "version_added": "12"
              },
              "firefox": {
                "version_added": "13"
              },
              "firefox_android": {
                "version_added": "14"
              },
              "ie": {
                "version_added": false
              },
              "nodejs": {
                "version_added": true
              },
              "opera": {
                "version_added": "25"
              },
              "opera_android": {
                "version_added": "25"
              },
              "safari": {
                "version_added": "9"
              },
              "safari_ios": {
                "version_added": "9"
              },
              "samsunginternet_android": {
                "version_added": true
              }
            },
            "status": {
              "experimental": false,
              "standard_track": true,
              "deprecated": false
            }
          }
        },
        "set_null": {
          "__compat": {
            "description": "<code>new Set(null)</code>",
            "support": {
              "webview_android": {
                "version_added": true
              },
              "chrome": {
                "version_added": true
              },
              "chrome_android": {
                "version_added": true
              },
              "edge": {
                "version_added": "12"
              },
              "edge_mobile": {
                "version_added": "12"
              },
              "firefox": {
                "version_added": "37"
              },
              "firefox_android": {
                "version_added": "37"
              },
              "ie": {
                "version_added": "11"
              },
              "nodejs": {
                "version_added": true
              },
              "opera": {
                "version_added": true
              },
              "opera_android": {
                "version_added": true
              },
              "safari": {
                "version_added": "9"
              },
              "safari_ios": {
                "version_added": "9"
              },
              "samsunginternet_android": {
                "version_added": true
              }
            },
            "status": {
              "experimental": false,
              "standard_track": true,
              "deprecated": false
            }
          }
        },
        "set_without_new_throws": {
          "__compat": {
            "description": "<code>Set()</code> without <code>new</code> throws",
            "support": {
              "webview_android": {
                "version_added": true
              },
              "chrome": {
                "version_added": true
              },
              "chrome_android": {
                "version_added": true
              },
              "edge": {
                "version_added": "12"
              },
              "edge_mobile": {
                "version_added": "12"
              },
              "firefox": {
                "version_added": "42"
              },
              "firefox_android": {
                "version_added": "42"
              },
              "ie": {
                "version_added": "11"
              },
              "nodejs": {
                "version_added": true
              },
              "opera": {
                "version_added": true
              },
              "opera_android": {
                "version_added": true
              },
              "safari": {
                "version_added": "9"
              },
              "safari_ios": {
                "version_added": "9"
              },
              "samsunginternet_android": {
                "version_added": true
              }
            },
            "status": {
              "experimental": false,
              "standard_track": true,
              "deprecated": false
            }
          }
        },
        "key_equality_for_zeros": {
          "__compat": {
            "description": "Key equality for -0 and 0",
            "support": {
              "webview_android": {
                "version_added": "38"
              },
              "chrome": {
                "version_added": "38"
              },
              "chrome_android": {
                "version_added": "38"
              },
              "edge": {
                "version_added": "12"
              },
              "edge_mobile": {
                "version_added": "12"
              },
              "firefox": {
                "version_added": "29"
              },
              "firefox_android": {
                "version_added": "29"
              },
              "ie": {
                "version_added": false
              },
              "nodejs": {
                "version_added": true
              },
              "opera": {
                "version_added": "25"
              },
              "opera_android": {
                "version_added": "25"
              },
              "safari": {
                "version_added": "9"
              },
              "safari_ios": {
                "version_added": "9"
              },
              "samsunginternet_android": {
                "version_added": true
              }
            },
            "status": {
              "experimental": false,
              "standard_track": true,
              "deprecated": false
            }
          }
        },
        "add": {
          "__compat": {
            "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Set/add",
            "support": {
              "webview_android": {
                "version_added": "38"
              },
              "chrome": {
                "version_added": "38"
              },
              "chrome_android": {
                "version_added": "38"
              },
              "edge": {
                "version_added": "12"
              },
              "edge_mobile": {
                "version_added": "12"
              },
              "firefox": {
                "version_added": "13"
              },
              "firefox_android": {
                "version_added": "14"
              },
              "ie": {
                "version_added": "11",
                "partial_implementation": true,
                "notes": "Returns 'undefined' instead of the 'Set' object."
              },
              "nodejs": {
                "version_added": true
              },
              "opera": {
                "version_added": "25"
              },
              "opera_android": {
                "version_added": "25"
              },
              "safari": {
                "version_added": "8"
              },
              "safari_ios": {
                "version_added": "8"
              },
              "samsunginternet_android": {
                "version_added": true
              }
            },
            "status": {
              "experimental": false,
              "standard_track": true,
              "deprecated": false
            }
          }
        },
        "clear": {
          "__compat": {
            "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Set/clear",
            "support": {
              "webview_android": {
                "version_added": "38"
              },
              "chrome": {
                "version_added": "38"
              },
              "chrome_android": {
                "version_added": "38"
              },
              "edge": {
                "version_added": "12"
              },
              "edge_mobile": {
                "version_added": "12"
              },
              "firefox": {
                "version_added": "19"
              },
              "firefox_android": {
                "version_added": "19"
              },
              "ie": {
                "version_added": "11"
              },
              "nodejs": {
                "version_added": true
              },
              "opera": {
                "version_added": "25"
              },
              "opera_android": {
                "version_added": "25"
              },
              "safari": {
                "version_added": "8"
              },
              "safari_ios": {
                "version_added": "8"
              },
              "samsunginternet_android": {
                "version_added": true
              }
            },
            "status": {
              "experimental": false,
              "standard_track": true,
              "deprecated": false
            }
          }
        },
        "delete": {
          "__compat": {
            "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Set/delete",
            "support": {
              "webview_android": {
                "version_added": "38"
              },
              "chrome": {
                "version_added": "38"
              },
              "chrome_android": {
                "version_added": "38"
              },
              "edge": {
                "version_added": "12"
              },
              "edge_mobile": {
                "version_added": "12"
              },
              "firefox": {
                "version_added": "13"
              },
              "firefox_android": {
                "version_added": "14"
              },
              "ie": {
                "version_added": "11"
              },
              "nodejs": {
                "version_added": true
              },
              "opera": {
                "version_added": "25"
              },
              "opera_android": {
                "version_added": "25"
              },
              "safari": {
                "version_added": "8"
              },
              "safari_ios": {
                "version_added": "8"
              },
              "samsunginternet_android": {
                "version_added": true
              }
            },
            "status": {
              "experimental": false,
              "standard_track": true,
              "deprecated": false
            }
          }
        },
        "entries": {
          "__compat": {
            "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Set/entries",
            "support": {
              "webview_android": {
                "version_added": "38"
              },
              "chrome": {
                "version_added": "38"
              },
              "chrome_android": {
                "version_added": "38"
              },
              "edge": {
                "version_added": "12"
              },
              "edge_mobile": {
                "version_added": "12"
              },
              "firefox": {
                "version_added": "24"
              },
              "firefox_android": {
                "version_added": "24"
              },
              "ie": {
                "version_added": false
              },
              "nodejs": {
                "version_added": true
              },
              "opera": {
                "version_added": "25"
              },
              "opera_android": {
                "version_added": "25"
              },
              "safari": {
                "version_added": "8"
              },
              "safari_ios": {
                "version_added": "8"
              },
              "samsunginternet_android": {
                "version_added": true
              }
            },
            "status": {
              "experimental": false,
              "standard_track": true,
              "deprecated": false
            }
          }
        },
        "forEach": {
          "__compat": {
            "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Set/forEach",
            "support": {
              "webview_android": {
                "version_added": "38"
              },
              "chrome": {
                "version_added": "38"
              },
              "chrome_android": {
                "version_added": "38"
              },
              "edge": {
                "version_added": "12"
              },
              "edge_mobile": {
                "version_added": "12"
              },
              "firefox": {
                "version_added": "25"
              },
              "firefox_android": {
                "version_added": "25"
              },
              "ie": {
                "version_added": "11"
              },
              "nodejs": {
                "version_added": true
              },
              "opera": {
                "version_added": "25"
              },
              "opera_android": {
                "version_added": "25"
              },
              "safari": {
                "version_added": "8"
              },
              "safari_ios": {
                "version_added": "8"
              },
              "samsunginternet_android": {
                "version_added": true
              }
            },
            "status": {
              "experimental": false,
              "standard_track": true,
              "deprecated": false
            }
          }
        },
        "has": {
          "__compat": {
            "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Set/has",
            "support": {
              "webview_android": {
                "version_added": "38"
              },
              "chrome": {
                "version_added": "38"
              },
              "chrome_android": {
                "version_added": "38"
              },
              "edge": {
                "version_added": "12"
              },
              "edge_mobile": {
                "version_added": "12"
              },
              "firefox": {
                "version_added": "13"
              },
              "firefox_android": {
                "version_added": "14"
              },
              "ie": {
                "version_added": "11"
              },
              "nodejs": {
                "version_added": true
              },
              "opera": {
                "version_added": "25"
              },
              "opera_android": {
                "version_added": "25"
              },
              "safari": {
                "version_added": "8"
              },
              "safari_ios": {
                "version_added": "8"
              },
              "samsunginternet_android": {
                "version_added": true
              }
            },
            "status": {
              "experimental": false,
              "standard_track": true,
              "deprecated": false
            }
          }
        },
        "prototype": {
          "__compat": {
            "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Set/prototype",
            "support": {
              "webview_android": {
                "version_added": "38"
              },
              "chrome": {
                "version_added": "38"
              },
              "chrome_android": {
                "version_added": "38"
              },
              "edge": {
                "version_added": "12"
              },
              "edge_mobile": {
                "version_added": "12"
              },
              "firefox": {
                "version_added": "13"
              },
              "firefox_android": {
                "version_added": "14"
              },
              "ie": {
                "version_added": "11"
              },
              "nodejs": {
                "version_added": true
              },
              "opera": {
                "version_added": "25"
              },
              "opera_android": {
                "version_added": "25"
              },
              "safari": {
                "version_added": "8"
              },
              "safari_ios": {
                "version_added": "8"
              },
              "samsunginternet_android": {
                "version_added": true
              }
            },
            "status": {
              "experimental": false,
              "standard_track": true,
              "deprecated": false
            }
          }
        },
        "size": {
          "__compat": {
            "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Set/size",
            "support": {
              "webview_android": {
                "version_added": "38"
              },
              "chrome": {
                "version_added": "38"
              },
              "chrome_android": {
                "version_added": "38"
              },
              "edge": {
                "version_added": "12"
              },
              "edge_mobile": {
                "version_added": "12"
              },
              "firefox": {
                "version_added": "19",
                "notes": "From Firefox 13 to Firefox 18, the <code>size</code> property was implemented as a <code>Set.prototype.size()</code> method, this has been changed to a property in later versions conform to the ECMAScript 2015 specification."
              },
              "firefox_android": {
                "version_added": "19",
                "notes": "From Firefox 13 to Firefox 18, the <code>size</code> property was implemented as a <code>Set.prototype.size()</code> method, this has been changed to a property in later versions conform to the ECMAScript 2015 specification."
              },
              "ie": {
                "version_added": "11"
              },
              "nodejs": {
                "version_added": true
              },
              "opera": {
                "version_added": "25"
              },
              "opera_android": {
                "version_added": "25"
              },
              "safari": {
                "version_added": "8"
              },
              "safari_ios": {
                "version_added": "8"
              },
              "samsunginternet_android": {
                "version_added": true
              }
            },
            "status": {
              "experimental": false,
              "standard_track": true,
              "deprecated": false
            }
          }
        },
        "values": {
          "__compat": {
            "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Set/values",
            "support": {
              "webview_android": {
                "version_added": "38"
              },
              "chrome": {
                "version_added": "38"
              },
              "chrome_android": {
                "version_added": "38"
              },
              "edge": {
                "version_added": "12"
              },
              "edge_mobile": {
                "version_added": "12"
              },
              "firefox": {
                "version_added": "24"
              },
              "firefox_android": {
                "version_added": "24"
              },
              "ie": {
                "version_added": false
              },
              "nodejs": {
                "version_added": true
              },
              "opera": {
                "version_added": "25"
              },
              "opera_android": {
                "version_added": "25"
              },
              "safari": {
                "version_added": "8"
              },
              "safari_ios": {
                "version_added": "8"
              },
              "samsunginternet_android": {
                "version_added": true
              }
            },
            "status": {
              "experimental": false,
              "standard_track": true,
              "deprecated": false
            }
          }
        },
        "@@iterator": {
          "__compat": {
            "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Set/@@iterator",
            "support": {
              "webview_android": {
                "version_added": true
              },
              "chrome": {
                "version_added": true
              },
              "chrome_android": {
                "version_added": true
              },
              "edge": {
                "version_added": true
              },
              "edge_mobile": {
                "version_added": true
              },
              "firefox": [
                {
                  "version_added": "36"
                },
                {
                  "alternative_name": "@@iterator",
                  "version_added": "27",
                  "version_removed": "36",
                  "notes": "A placeholder property named <code>@@iterator</code> is used."
                },
                {
                  "alternative_name": "iterator",
                  "version_added": "17",
                  "version_removed": "27",
                  "notes": "A placeholder property named <code>iterator</code> is used."
                }
              ],
              "firefox_android": [
                {
                  "version_added": "36"
                },
                {
                  "alternative_name": "@@iterator",
                  "version_added": "27",
                  "version_removed": "36",
                  "notes": "A placeholder property named <code>@@iterator</code> is used."
                },
                {
                  "alternative_name": "iterator",
                  "version_added": "17",
                  "version_removed": "27",
                  "notes": "A placeholder property named <code>iterator</code> is used."
                }
              ],
              "ie": {
                "version_added": false
              },
              "nodejs": {
                "version_added": true
              },
              "opera": {
                "version_added": true
              },
              "opera_android": {
                "version_added": true
              },
              "safari": {
                "version_added": true
              },
              "safari_ios": {
                "version_added": true
              },
              "samsunginternet_android": {
                "version_added": true
              }
            },
            "status": {
              "experimental": false,
              "standard_track": true,
              "deprecated": false
            }
          }
        },
        "@@species": {
          "__compat": {
            "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Set/@@species",
            "support": {
              "webview_android": {
                "version_added": "51"
              },
              "chrome": {
                "version_added": "51"
              },
              "chrome_android": {
                "version_added": "51"
              },
              "edge": {
                "version_added": "13"
              },
              "edge_mobile": {
                "version_added": "13"
              },
              "firefox": {
                "version_added": "41"
              },
              "firefox_android": {
                "version_added": "41"
              },
              "ie": {
                "version_added": false
              },
              "nodejs": {
                "version_added": false
              },
              "opera": {
                "version_added": "38"
              },
              "opera_android": {
                "version_added": "38"
              },
              "safari": {
                "version_added": "10"
              },
              "safari_ios": {
                "version_added": "10"
              },
              "samsunginternet_android": {
                "version_added": "5.0"
              }
            },
            "status": {
              "experimental": false,
              "standard_track": true,
              "deprecated": false
            }
          }
        }
      }
    }
  }
}