Add Number of pages element

src/file/paragraph/run/page-number.ts

@@ -12,3 +12,11 @@ export class Page extends XmlComponent {
         this.root.push("PAGE");
     }
 }
+
+export class NumberOfPages extends XmlComponent {
+    constructor() {
+        super("w:instrText");
+        this.root.push(new TextAttributes({ space: SpaceType.PRESERVE }));
+        this.root.push("NUMPAGES");
+    }
+}

src/file/paragraph/run/run.ts

@@ -14,7 +14,7 @@ import {
     SizeComplexScript,
     Strike,
 } from "./formatting";
-import { Page } from "./page-number";
+import { NumberOfPages, Page } from "./page-number";
 import { RunProperties } from "./properties";
 import { RunFonts } from "./run-fonts";
 import { SubScript, SuperScript } from "./script";
@@ -84,6 +84,14 @@ export class Run extends XmlComponent {
         return this;
     }
 
+    public numberOfTotalPages(): Run {
+        this.root.push(new Begin());
+        this.root.push(new NumberOfPages());
+        this.root.push(new Separate());
+        this.root.push(new End());
+        return this;
+    }
+
     public smallCaps(): Run {
         this.properties.push(new SmallCaps());
         return this;