Initial pass

node_modules/jsdom/lib/jsdom/living/generated/VisibilityState.js

@@ -0,0 +1,13 @@
+"use strict";
+
+const enumerationValues = new Set(["hidden", "visible", "prerender"]);
+module.exports = {
+  enumerationValues,
+  convert(value, { context = "The provided value" } = {}) {
+    const string = `${value}`;
+    if (!enumerationValues.has(value)) {
+      throw new TypeError(`${context} '${value}' is not a valid enumeration value for VisibilityState`);
+    }
+    return string;
+  }
+};