doc: GM_info.userAgent

Author: tophf

index.d.ts

@@ -69,6 +69,10 @@ declare interface VMScriptGMInfoObject {
    * extension API (`browser.runtime.getPlatformInfo` and `getBrowserInfo`).
    */
   platform: VMScriptGMInfoPlatform;
+  /**
+   * A copy of navigator.userAgent from the content script of the extension.
+   * @since VM2.20.2 */
+  userAgent: string;
   /**
    * A copy of navigator.userAgentData from the content script of the extension.
    * Not present in browsers that don't implement this API.