{
  "javascript": {
    "builtins": {
      "Proxy": {
        "__compat": {
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          "support": {
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            },
            "chrome": {
              "version_added": "49"
            },
            "chrome_android": {
              "version_added": "49"
            },
            "edge": {
              "version_added": "12"
            },
            "edge_mobile": {
              "version_added": true
            },
            "firefox": {
              "version_added": "18"
            },
            "firefox_android": {
              "version_added": "18"
            },
            "ie": {
              "version_added": false
            },
            "nodejs": {
              "version_added": true
            },
            "opera": {
              "version_added": "36"
            },
            "opera_android": {
              "version_added": "36"
            },
            "safari": {
              "version_added": "10"
            },
            "safari_ios": {
              "version_added": "10"
            },
            "samsunginternet_android": {
              "version_added": "5.0"
            }
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        },
        "revocable": {
          "__compat": {
            "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Proxy/revocable",
            "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": "34"
              },
              "firefox_android": {
                "version_added": "34"
              },
              "ie": {
                "version_added": false
              },
              "nodejs": {
                "version_added": true
              },
              "opera": {
                "version_added": true
              },
              "opera_android": {
                "version_added": true
              },
              "safari": {
                "version_added": "10"
              },
              "safari_ios": {
                "version_added": "10"
              },
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                "version_added": true
              }
            },
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              "experimental": false,
              "standard_track": true,
              "deprecated": false
            }
          }
        },
        "handler": {
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              "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Proxy/handler/apply",
              "support": {
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                  "version_added": "49"
                },
                "chrome": {
                  "version_added": "49"
                },
                "chrome_android": {
                  "version_added": "49"
                },
                "edge": {
                  "version_added": "12"
                },
                "edge_mobile": {
                  "version_added": true
                },
                "firefox": {
                  "version_added": "18"
                },
                "firefox_android": {
                  "version_added": "18"
                },
                "ie": {
                  "version_added": false
                },
                "nodejs": {
                  "version_added": true
                },
                "opera": {
                  "version_added": "36"
                },
                "opera_android": {
                  "version_added": "36"
                },
                "safari": {
                  "version_added": "10"
                },
                "safari_ios": {
                  "version_added": "10"
                },
                "samsunginternet_android": {
                  "version_added": "5.0"
                }
              },
              "status": {
                "experimental": false,
                "standard_track": true,
                "deprecated": false
              }
            }
          },
          "construct": {
            "__compat": {
              "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Proxy/handler/construct",
              "support": {
                "webview_android": {
                  "version_added": "49"
                },
                "chrome": {
                  "version_added": "49"
                },
                "chrome_android": {
                  "version_added": "49"
                },
                "edge": {
                  "version_added": "12"
                },
                "edge_mobile": {
                  "version_added": true
                },
                "firefox": {
                  "version_added": "18"
                },
                "firefox_android": {
                  "version_added": "18"
                },
                "ie": {
                  "version_added": false
                },
                "nodejs": {
                  "version_added": true
                },
                "opera": {
                  "version_added": "36"
                },
                "opera_android": {
                  "version_added": "36"
                },
                "safari": {
                  "version_added": "10"
                },
                "safari_ios": {
                  "version_added": "10"
                },
                "samsunginternet_android": {
                  "version_added": "5.0"
                }
              },
              "status": {
                "experimental": false,
                "standard_track": true,
                "deprecated": false
              }
            }
          },
          "defineProperty": {
            "__compat": {
              "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Proxy/handler/defineProperty",
              "support": {
                "webview_android": {
                  "version_added": "49"
                },
                "chrome": {
                  "version_added": "49"
                },
                "chrome_android": {
                  "version_added": "49"
                },
                "edge": {
                  "version_added": "12"
                },
                "edge_mobile": {
                  "version_added": true
                },
                "firefox": {
                  "version_added": "18"
                },
                "firefox_android": {
                  "version_added": "18"
                },
                "ie": {
                  "version_added": false
                },
                "nodejs": {
                  "version_added": true
                },
                "opera": {
                  "version_added": "36"
                },
                "opera_android": {
                  "version_added": "36"
                },
                "safari": {
                  "version_added": "10"
                },
                "safari_ios": {
                  "version_added": "10"
                },
                "samsunginternet_android": {
                  "version_added": "5.0"
                }
              },
              "status": {
                "experimental": false,
                "standard_track": true,
                "deprecated": false
              }
            }
          },
          "deleteProperty": {
            "__compat": {
              "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Proxy/handler/deleteProperty",
              "support": {
                "webview_android": {
                  "version_added": "49"
                },
                "chrome": {
                  "version_added": "49"
                },
                "chrome_android": {
                  "version_added": "49"
                },
                "edge": {
                  "version_added": "12"
                },
                "edge_mobile": {
                  "version_added": true
                },
                "firefox": {
                  "version_added": "18"
                },
                "firefox_android": {
                  "version_added": "18"
                },
                "ie": {
                  "version_added": false
                },
                "nodejs": {
                  "version_added": true
                },
                "opera": {
                  "version_added": "36"
                },
                "opera_android": {
                  "version_added": "36"
                },
                "safari": {
                  "version_added": "10"
                },
                "safari_ios": {
                  "version_added": "10"
                },
                "samsunginternet_android": {
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                }
              },
              "status": {
                "experimental": false,
                "standard_track": true,
                "deprecated": false
              }
            }
          },
          "enumerate": {
            "__compat": {
              "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Proxy/handler/enumerate",
              "support": {
                "webview_android": {
                  "version_added": false
                },
                "chrome": {
                  "version_added": false
                },
                "chrome_android": {
                  "version_added": false
                },
                "edge": {
                  "version_added": false
                },
                "edge_mobile": {
                  "version_added": false
                },
                "firefox": {
                  "version_added": "37",
                  "version_removed": "47"
                },
                "firefox_android": {
                  "version_added": "37",
                  "version_removed": "47"
                },
                "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
                }
              },
              "status": {
                "experimental": false,
                "standard_track": false,
                "deprecated": true
              }
            }
          },
          "get": {
            "__compat": {
              "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Proxy/handler/get",
              "support": {
                "webview_android": {
                  "version_added": "49"
                },
                "chrome": {
                  "version_added": "49"
                },
                "chrome_android": {
                  "version_added": "49"
                },
                "edge": {
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                },
                "edge_mobile": {
                  "version_added": true
                },
                "firefox": {
                  "version_added": "18"
                },
                "firefox_android": {
                  "version_added": "18"
                },
                "ie": {
                  "version_added": false
                },
                "nodejs": {
                  "version_added": true
                },
                "opera": {
                  "version_added": "36"
                },
                "opera_android": {
                  "version_added": "36"
                },
                "safari": {
                  "version_added": "10"
                },
                "safari_ios": {
                  "version_added": "10"
                },
                "samsunginternet_android": {
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                }
              },
              "status": {
                "experimental": false,
                "standard_track": true,
                "deprecated": false
              }
            }
          },
          "getOwnPropertyDescriptor": {
            "__compat": {
              "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Proxy/handler/getOwnPropertyDescriptor",
              "support": {
                "webview_android": {
                  "version_added": "49"
                },
                "chrome": {
                  "version_added": "49"
                },
                "chrome_android": {
                  "version_added": "49"
                },
                "edge": {
                  "version_added": "12"
                },
                "edge_mobile": {
                  "version_added": true
                },
                "firefox": {
                  "version_added": "18"
                },
                "firefox_android": {
                  "version_added": "18"
                },
                "ie": {
                  "version_added": false
                },
                "nodejs": {
                  "version_added": true
                },
                "opera": {
                  "version_added": "36"
                },
                "opera_android": {
                  "version_added": "36"
                },
                "safari": {
                  "version_added": "10"
                },
                "safari_ios": {
                  "version_added": "10"
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              },
              "status": {
                "experimental": false,
                "standard_track": true,
                "deprecated": false
              }
            }
          },
          "getPrototypeOf": {
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              "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Proxy/handler/getPrototypeOf",
              "support": {
                "webview_android": {
                  "version_added": false
                },
                "chrome": {
                  "version_added": false
                },
                "chrome_android": {
                  "version_added": false
                },
                "edge": {
                  "version_added": false
                },
                "edge_mobile": {
                  "version_added": false
                },
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                  "version_added": "49"
                },
                "firefox_android": {
                  "version_added": "49"
                },
                "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
                }
              },
              "status": {
                "experimental": false,
                "standard_track": true,
                "deprecated": false
              }
            }
          },
          "has": {
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              "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Proxy/handler/has",
              "support": {
                "webview_android": {
                  "version_added": "49"
                },
                "chrome": {
                  "version_added": "49"
                },
                "chrome_android": {
                  "version_added": "49"
                },
                "edge": {
                  "version_added": "12"
                },
                "edge_mobile": {
                  "version_added": true
                },
                "firefox": {
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                },
                "firefox_android": {
                  "version_added": "18"
                },
                "ie": {
                  "version_added": false
                },
                "nodejs": {
                  "version_added": true
                },
                "opera": {
                  "version_added": "36"
                },
                "opera_android": {
                  "version_added": "36"
                },
                "safari": {
                  "version_added": "10"
                },
                "safari_ios": {
                  "version_added": "10"
                },
                "samsunginternet_android": {
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                }
              },
              "status": {
                "experimental": false,
                "standard_track": true,
                "deprecated": false
              }
            }
          },
          "isExtensible": {
            "__compat": {
              "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Proxy/handler/isExtensible",
              "support": {
                "webview_android": {
                  "version_added": null
                },
                "chrome": {
                  "version_added": null
                },
                "chrome_android": {
                  "version_added": null
                },
                "edge": {
                  "version_added": null
                },
                "edge_mobile": {
                  "version_added": null
                },
                "firefox": {
                  "version_added": "31"
                },
                "firefox_android": {
                  "version_added": "31"
                },
                "ie": {
                  "version_added": false
                },
                "nodejs": {
                  "version_added": null
                },
                "opera": {
                  "version_added": null
                },
                "opera_android": {
                  "version_added": null
                },
                "safari": {
                  "version_added": null
                },
                "safari_ios": {
                  "version_added": null
                },
                "samsunginternet_android": {
                  "version_added": null
                }
              },
              "status": {
                "experimental": false,
                "standard_track": true,
                "deprecated": false
              }
            }
          },
          "ownKeys": {
            "__compat": {
              "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Proxy/handler/ownKeys",
              "support": {
                "webview_android": {
                  "version_added": "49"
                },
                "chrome": {
                  "version_added": "49"
                },
                "chrome_android": {
                  "version_added": "49"
                },
                "edge": {
                  "version_added": "12"
                },
                "edge_mobile": {
                  "version_added": true
                },
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                },
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                },
                "ie": {
                  "version_added": false
                },
                "nodejs": {
                  "version_added": true
                },
                "opera": {
                  "version_added": "36"
                },
                "opera_android": {
                  "version_added": "36"
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                "safari": {
                  "version_added": "10"
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                "safari_ios": {
                  "version_added": "10"
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              },
              "status": {
                "experimental": false,
                "standard_track": true,
                "deprecated": false
              }
            }
          },
          "preventExtensions": {
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              "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Proxy/handler/preventExtensions",
              "support": {
                "webview_android": {
                  "version_added": "49"
                },
                "chrome": {
                  "version_added": "49"
                },
                "chrome_android": {
                  "version_added": "49"
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                  "version_added": "12"
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                "edge_mobile": {
                  "version_added": true
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                  "version_added": "22"
                },
                "firefox_android": {
                  "version_added": "22"
                },
                "ie": {
                  "version_added": false
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                "nodejs": {
                  "version_added": true
                },
                "opera": {
                  "version_added": "36"
                },
                "opera_android": {
                  "version_added": "36"
                },
                "safari": {
                  "version_added": "10"
                },
                "safari_ios": {
                  "version_added": "10"
                },
                "samsunginternet_android": {
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                }
              },
              "status": {
                "experimental": false,
                "standard_track": true,
                "deprecated": false
              }
            }
          },
          "set": {
            "__compat": {
              "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Proxy/handler/set",
              "support": {
                "webview_android": {
                  "version_added": "49"
                },
                "chrome": {
                  "version_added": "49"
                },
                "chrome_android": {
                  "version_added": "49"
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                "edge": {
                  "version_added": "12"
                },
                "edge_mobile": {
                  "version_added": true
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                "firefox": {
                  "version_added": "18"
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                "firefox_android": {
                  "version_added": "18"
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                "ie": {
                  "version_added": false
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                "nodejs": {
                  "version_added": true
                },
                "opera": {
                  "version_added": "36"
                },
                "opera_android": {
                  "version_added": "36"
                },
                "safari": {
                  "version_added": "10"
                },
                "safari_ios": {
                  "version_added": "10"
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                "samsunginternet_android": {
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              },
              "status": {
                "experimental": false,
                "standard_track": true,
                "deprecated": false
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            }
          },
          "setPrototypeOf": {
            "__compat": {
              "mdn_url": "https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Proxy/handler/setPrototypeOf",
              "support": {
                "webview_android": {
                  "version_added": null
                },
                "chrome": {
                  "version_added": null
                },
                "chrome_android": {
                  "version_added": null
                },
                "edge": {
                  "version_added": null
                },
                "edge_mobile": {
                  "version_added": null
                },
                "firefox": {
                  "version_added": "49"
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                "firefox_android": {
                  "version_added": "49"
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                "ie": {
                  "version_added": false
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                "nodejs": {
                  "version_added": null
                },
                "opera": {
                  "version_added": null
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                "opera_android": {
                  "version_added": null
                },
                "safari": {
                  "version_added": null
                },
                "safari_ios": {
                  "version_added": null
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                "samsunginternet_android": {
                  "version_added": null
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              },
              "status": {
                "experimental": false,
                "standard_track": true,
                "deprecated": false
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            }
          }
        }
      }
    }
  }
}