Add events for fs (#11277)

node/node.d.ts

@@ -1788,16 +1788,92 @@ declare module "fs" {
 
     interface FSWatcher extends events.EventEmitter {
         close(): void;
+        
+        /**
+         * events.EventEmitter
+         *   1. change
+         *   2. error
+         */
+        addListener(event: string, listener: Function): this;
+        addListener(event: "change", listener: (eventType: string, filename: string | Buffer) => void): this;
+        addListener(event: "error", listener: (code: number, signal: string) => void): this;
+        
+        on(event: string, listener: Function): this;
+        on(event: "change", listener: (eventType: string, filename: string | Buffer) => void): this;
+        on(event: "error", listener: (code: number, signal: string) => void): this;
+        
+        once(event: string, listener: Function): this;
+        once(event: "change", listener: (eventType: string, filename: string | Buffer) => void): this;
+        once(event: "error", listener: (code: number, signal: string) => void): this;
+        
+        prependListener(event: string, listener: Function): this;
+        prependListener(event: "change", listener: (eventType: string, filename: string | Buffer) => void): this;
+        prependListener(event: "error", listener: (code: number, signal: string) => void): this;
+        
+        prependOnceListener(event: string, listener: Function): this;
+        prependOnceListener(event: "change", listener: (eventType: string, filename: string | Buffer) => void): this;
+        prependOnceListener(event: "error", listener: (code: number, signal: string) => void): this;
     }
 
     export interface ReadStream extends stream.Readable {
         close(): void;
         destroy(): void;
+        
+        /**
+         * events.EventEmitter
+         *   1. open
+         *   2. close
+         */
+        addListener(event: string, listener: Function): this;
+        addListener(event: "open", listener: (fd: number) => void): this;
+        addListener(event: "close", listener: () => void): this;
+        
+        on(event: string, listener: Function): this;
+        on(event: "open", listener: (fd: number) => void): this;
+        on(event: "close", listener: () => void): this;
+        
+        once(event: string, listener: Function): this;
+        once(event: "open", listener: (fd: number) => void): this;
+        once(event: "close", listener: () => void): this;
+        
+        prependListener(event: string, listener: Function): this;
+        prependListener(event: "open", listener: (fd: number) => void): this;
+        prependListener(event: "close", listener: () => void): this;
+        
+        prependOnceListener(event: string, listener: Function): this;
+        prependOnceListener(event: "open", listener: (fd: number) => void): this;
+        prependOnceListener(event: "close", listener: () => void): this;
     }
+
     export interface WriteStream extends stream.Writable {
         close(): void;
         bytesWritten: number;
         path: string | Buffer;
+        
+        /**
+         * events.EventEmitter
+         *   1. open
+         *   2. close
+         */
+        addListener(event: string, listener: Function): this;
+        addListener(event: "open", listener: (fd: number) => void): this;
+        addListener(event: "close", listener: () => void): this;
+        
+        on(event: string, listener: Function): this;
+        on(event: "open", listener: (fd: number) => void): this;
+        on(event: "close", listener: () => void): this;
+        
+        once(event: string, listener: Function): this;
+        once(event: "open", listener: (fd: number) => void): this;
+        once(event: "close", listener: () => void): this;
+        
+        prependListener(event: string, listener: Function): this;
+        prependListener(event: "open", listener: (fd: number) => void): this;
+        prependListener(event: "close", listener: () => void): this;
+        
+        prependOnceListener(event: string, listener: Function): this;
+        prependOnceListener(event: "open", listener: (fd: number) => void): this;
+        prependOnceListener(event: "close", listener: () => void): this;
     }
 
     /**