added #SubScript and #SuperScript methods to ParagraphStyle

ts/docx/run/formatting.ts

@@ -1,5 +1,6 @@
 import { Attributes, XmlComponent } from "../xml-components";
 export { Underline } from "./underline";
+export { SubScript, SuperScript } from "./script";
 
 export class Bold extends XmlComponent {
 

ts/styles/style/index.ts

@@ -111,6 +111,16 @@ export class ParagraphStyle extends Style {
         return this;
     }
 
+    public subScript(): ParagraphStyle {
+        this.addRunProperty(new formatting.SubScript());
+        return this;
+    }
+
+    public superScript(): ParagraphStyle {
+        this.addRunProperty(new formatting.SuperScript());
+        return this;
+    }
+
     public underline(underlineType?: string, color?: string): ParagraphStyle {
         this.addRunProperty(new formatting.Underline(underlineType, color));
         return this;

ts/tests/stylesTest.ts

@@ -290,6 +290,36 @@ describe("ParagraphStyle", () => {
             });
         });
 
+        it("#subScript", () => {
+            const style = new ParagraphStyle("myStyleId")
+                .subScript();
+            const tree = new Formatter().format(style);
+            expect(tree).to.deep.equal({
+                "w:style": [
+                    {_attr: {"w:type": "paragraph", "w:styleId": "myStyleId"}},
+                    {"w:pPr": []},
+                    {"w:rPr": [
+                        {"w:vertAlign": [{_attr: {"w:val": "subscript"}}]},
+                    ]},
+                ],
+            });
+        });
+
+        it("#superScript", () => {
+            const style = new ParagraphStyle("myStyleId")
+                .superScript();
+            const tree = new Formatter().format(style);
+            expect(tree).to.deep.equal({
+                "w:style": [
+                    {_attr: {"w:type": "paragraph", "w:styleId": "myStyleId"}},
+                    {"w:pPr": []},
+                    {"w:rPr": [
+                        {"w:vertAlign": [{_attr: {"w:val": "superscript"}}]},
+                    ]},
+                ],
+            });
+        });
+
         it("#bold", () => {
             const style = new ParagraphStyle("myStyleId")
                 .bold();