{
  "webextensions": {
    "api": {
      "i18n": {
        "LanguageCode": {
          "__compat": {
            "mdn_url": "https://developer.mozilla.org/docs/Mozilla/Add-ons/WebExtensions/API/i18n/LanguageCode",
            "support": {
              "chrome": {
                "version_added": "47"
              },
              "edge": {
                "version_added": "14"
              },
              "firefox": {
                "version_added": "45"
              },
              "firefox_android": {
                "version_added": "48"
              },
              "opera": {
                "version_added": "34"
              }
            }
          }
        },
        "detectLanguage": {
          "__compat": {
            "mdn_url": "https://developer.mozilla.org/docs/Mozilla/Add-ons/WebExtensions/API/i18n/detectLanguage",
            "support": {
              "chrome": {
                "version_added": "47"
              },
              "edge": {
                "version_added": false
              },
              "firefox": {
                "version_added": "47"
              },
              "firefox_android": {
                "version_added": "48"
              },
              "opera": {
                "version_added": "34"
              }
            }
          }
        },
        "getAcceptLanguages": {
          "__compat": {
            "mdn_url": "https://developer.mozilla.org/docs/Mozilla/Add-ons/WebExtensions/API/i18n/getAcceptLanguages",
            "support": {
              "chrome": {
                "version_added": "47"
              },
              "edge": {
                "version_added": "14"
              },
              "firefox": {
                "version_added": "47"
              },
              "firefox_android": {
                "version_added": "48"
              },
              "opera": {
                "version_added": "34"
              }
            }
          }
        },
        "getMessage": {
          "__compat": {
            "mdn_url": "https://developer.mozilla.org/docs/Mozilla/Add-ons/WebExtensions/API/i18n/getMessage",
            "support": {
              "chrome": {
                "version_added": "17"
              },
              "edge": {
                "version_added": "14",
                "notes": [
                  "Throws an exception instead returning an empty string if the message does not exist.",
                  "Expects substitutions to be strings, while other browsers allow any value which is then converted to a string."
                ]
              },
              "firefox": {
                "version_added": "45",
                "notes": "Firefox 47 and earlier returns \"??\" instead of \"\" if the message is not found in _locales, <a href='https://bugzil.la/1258199'>bug 1258199</a> changed this act to match Chrome, landed on Firefox 48."
              },
              "firefox_android": {
                "version_added": "48"
              },
              "opera": {
                "version_added": "15"
              }
            }
          }
        },
        "getUILanguage": {
          "__compat": {
            "mdn_url": "https://developer.mozilla.org/docs/Mozilla/Add-ons/WebExtensions/API/i18n/getUILanguage",
            "support": {
              "chrome": {
                "version_added": "35"
              },
              "edge": {
                "version_added": "14"
              },
              "firefox": {
                "version_added": "47"
              },
              "firefox_android": {
                "version_added": "48"
              },
              "opera": {
                "version_added": true
              }
            }
          }
        }
      }
    }
  }
}