Add events.once to node v10 and v11 (#39115)

types/node/v10/events.d.ts

@@ -1,7 +1,17 @@
 declare module "events" {
     class internal extends NodeJS.EventEmitter { }
 
+    interface NodeEventTarget {
+        once(event: string | symbol, listener: (...args: any[]) => void): this;
+    }
+
+    interface DOMEventTarget {
+        addEventListener(event: string, listener: (...args: any[]) => void, opts?: { once: boolean }): any;
+    }
+
     namespace internal {
+         function once(emitter: NodeEventTarget, event: string | symbol): Promise<any[]>;
+         function once(emitter: DOMEventTarget, event: string): Promise<any[]>;
          class EventEmitter extends internal {
             /** @deprecated since v4.0.0 */
             static listenerCount(emitter: EventEmitter, event: string | symbol): number;

types/node/v10/index.d.ts

@@ -1,4 +1,4 @@
-// Type definitions for Node.js 10.14
+// Type definitions for Node.js 10.17
 // Project: http://nodejs.org/
 // Definitions by: Microsoft TypeScript <https://github.com/Microsoft>
 //                 DefinitelyTyped <https://github.com/DefinitelyTyped>

types/node/v11/events.d.ts

@@ -1,8 +1,17 @@
 declare module "events" {
     class internal extends NodeJS.EventEmitter { }
 
+    interface NodeEventTarget {
+        once(event: string | symbol, listener: (...args: any[]) => void): this;
+    }
+
+    interface DOMEventTarget {
+        addEventListener(event: string, listener: (...args: any[]) => void, opts?: { once: boolean }): any;
+    }
+
     namespace internal {
-        function once(emitter: EventEmitter, event: string | symbol): Promise<any>;
+         function once(emitter: NodeEventTarget, event: string | symbol): Promise<any[]>;
+         function once(emitter: DOMEventTarget, event: string): Promise<any[]>;
          class EventEmitter extends internal {
             /** @deprecated since v4.0.0 */
             static listenerCount(emitter: EventEmitter, event: string | symbol): number;

types/node/v11/index.d.ts

@@ -1,4 +1,4 @@
-// Type definitions for non-npm package Node.js 11.13
+// Type definitions for non-npm package Node.js 11.15
 // Project: http://nodejs.org/
 // Definitions by: Microsoft TypeScript <https://github.com/Microsoft>
 //                 DefinitelyTyped <https://github.com/DefinitelyTyped>