updated ts definition for v2.4.0 of 'bytes' package with missing options

bytes/bytes.d.ts

@@ -1,10 +1,15 @@
-// Type definitions for bytes v2.1.0
+// Type definitions for bytes v2.4.0
 // Project: https://github.com/visionmedia/bytes.js
 // Definitions by: Zhiyuan Wang <https://github.com/danny8002/>
 // Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
 
 declare module 'bytes' {
-
+    interface BytesOptions {
+      decimalPlaces?: number,
+      thousandsSeparator?: string,
+      unitSeparator?: string,
+      fixedDecimals?: boolean
+    }
     /**
      *Convert the given value in bytes into a string.
      *
@@ -15,7 +20,7 @@ declare module 'bytes' {
      *
      * @returns {string}
      */
-    function bytes(value: number, options?: { thousandsSeparator: string }): string;
+    function bytes(value: number, options?: BytesOptions): string;
 
     /**
      *Parse string to an integer in bytes.
@@ -37,7 +42,7 @@ declare module 'bytes' {
          * @param {BytesFormatOptions} [options]
          */
 
-        function format(value: number, options?: { thousandsSeparator: string }): string;
+        function format(value: number, options?: BytesOptions): string;
 
         /**
          * Just return the input number value.