node: definition of the module "tty" has been changed

node/node.d.ts

@@ -1909,10 +1909,12 @@ declare module "tty" {
     export interface ReadStream extends net.Socket {
         isRaw: boolean;
         setRawMode(mode: boolean): void;
+        isTTY: boolean;
     }
     export interface WriteStream extends net.Socket {
         columns: number;
         rows: number;
+        isTTY: boolean;
     }
 }