#2388 - Add default tab stop (#2470)

* #2388 - Check for undefined rather than falsey

* Add default tab stop

* Add back tab stop positions

* Add test for default tab stop

src/file/settings/settings.spec.ts

@@ -112,6 +112,23 @@ describe("Settings", () => {
             });
         });
 
+        it("should add defaultTabStop setting with version", () => {
+            const settings = new Settings({
+                defaultTabStop: 100,
+            });
+
+            const tree = new Formatter().format(settings);
+            expect(Object.keys(tree)).has.length(1);
+            expect(tree["w:settings"]).to.be.an("array");
+            expect(tree["w:settings"]).to.deep.include({
+                "w:defaultTabStop": {
+                    _attr: {
+                        "w:val": 100,
+                    },
+                },
+            });
+        });
+
         // TODO: Remove when deprecating compatibilityModeVersion
         it("should add compatibility setting with legacy version", () => {
             const settings = new Settings({

src/file/settings/settings.ts

@@ -1,4 +1,4 @@
-import { OnOffElement, XmlAttributeComponent, XmlComponent } from "@file/xml-components";
+import { NumberValueElement, OnOffElement, XmlAttributeComponent, XmlComponent } from "@file/xml-components";
 
 import { Compatibility, ICompatibilityOptions } from "./compatibility";
 
@@ -152,6 +152,7 @@ export interface ISettingsOptions {
     readonly trackRevisions?: boolean;
     readonly updateFields?: boolean;
     readonly compatibility?: ICompatibilityOptions;
+    readonly defaultTabStop?: number;
 }
 
 export class Settings extends XmlComponent {
@@ -198,6 +199,11 @@ export class Settings extends XmlComponent {
             this.root.push(new OnOffElement("w:updateFields", options.updateFields));
         }
 
+        // https://c-rex.net/samples/ooxml/e1/Part4/OOXML_P4_DOCX_defaultTabStop_topic_ID0EIXSX.html
+        if (options.defaultTabStop !== undefined) {
+            this.root.push(new NumberValueElement("w:defaultTabStop", options.defaultTabStop));
+        }
+
         this.root.push(
             new Compatibility({
                 ...(options.compatibility ?? {}),