{
  "api": {
    "CSSNamespaceRule": {
      "__compat": {
        "mdn_url": "https://developer.mozilla.org/docs/Web/API/CSSNamespaceRule",
        "spec_url": "https://drafts.csswg.org/cssom/#the-cssnamespacerule-interface",
        "tags": [
          "web-features:namespace"
        ],
        "support": {
          "chrome": {
            "version_added": "47"
          },
          "chrome_android": "mirror",
          "edge": {
            "version_added": "12"
          },
          "firefox": {
            "version_added": "53"
          },
          "firefox_android": "mirror",
          "ie": {
            "version_added": "9"
          },
          "oculus": "mirror",
          "opera": {
            "version_added": "36"
          },
          "opera_android": {
            "version_added": "36"
          },
          "safari": {
            "version_added": "10.1"
          },
          "safari_ios": "mirror",
          "samsunginternet_android": "mirror",
          "webview_android": "mirror",
          "webview_ios": "mirror"
        },
        "status": {
          "experimental": false,
          "standard_track": true,
          "deprecated": false
        }
      },
      "namespaceURI": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/CSSNamespaceRule/namespaceURI",
          "spec_url": "https://drafts.csswg.org/cssom/#dom-cssnamespacerule-namespaceuri",
          "tags": [
            "web-features:namespace"
          ],
          "support": {
            "chrome": {
              "version_added": "47"
            },
            "chrome_android": "mirror",
            "edge": {
              "version_added": "12"
            },
            "firefox": {
              "version_added": "59"
            },
            "firefox_android": "mirror",
            "ie": {
              "version_added": "9"
            },
            "oculus": "mirror",
            "opera": {
              "version_added": "36"
            },
            "opera_android": {
              "version_added": "36"
            },
            "safari": {
              "version_added": "10.1"
            },
            "safari_ios": "mirror",
            "samsunginternet_android": "mirror",
            "webview_android": "mirror",
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "prefix": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/CSSNamespaceRule/prefix",
          "spec_url": "https://drafts.csswg.org/cssom/#dom-cssnamespacerule-prefix",
          "tags": [
            "web-features:namespace"
          ],
          "support": {
            "chrome": {
              "version_added": "47"
            },
            "chrome_android": "mirror",
            "edge": {
              "version_added": "12"
            },
            "firefox": {
              "version_added": "59"
            },
            "firefox_android": "mirror",
            "ie": {
              "version_added": "9"
            },
            "oculus": "mirror",
            "opera": {
              "version_added": "36"
            },
            "opera_android": {
              "version_added": "36"
            },
            "safari": {
              "version_added": "10.1"
            },
            "safari_ios": "mirror",
            "samsunginternet_android": "mirror",
            "webview_android": "mirror",
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      }
    }
  }
}