diff --git a/demo/index.js b/demo/index.js
deleted file mode 100644
index e6c7d926d0..0000000000
--- a/demo/index.js
+++ /dev/null
@@ -1,33 +0,0 @@
-var prompt = require('prompt');
-var shelljs = require('shelljs');
-var fs = require('fs');
-
-console.log('What demo do you wish to run? (Enter a number)');
-
-var schema = {
-    properties: {
-        number: {
-            pattern: /^[0-9]+$/,
-            message: 'Please enter a number.',
-            required: true
-        }
-    }
-};
-
-prompt.start();
-
-prompt.get(schema, function (err, result) {
-    var demoNumber = result.number;
-    var filePath = `./demo/demo${demoNumber}.ts`;
-
-    if (!fs.existsSync(filePath)) {
-        console.error(`demo${demoNumber} does not exist: ${filePath}`);
-        return;
-    }
-    console.log(`Running demo ${demoNumber}`);
-    if (shelljs.exec(`npm run ts-node -- ${filePath}`).code === 0) {
-        console.log("Document created successfully");
-    } else {
-        console.error('Something went wrong with the demo');
-    }
-});
diff --git a/demo/index.ts b/demo/index.ts
new file mode 100644
index 0000000000..50b65572f2
--- /dev/null
+++ b/demo/index.ts
@@ -0,0 +1,34 @@
+// tslint:disable:no-console
+import * as fs from "fs";
+import * as prompt from "prompt";
+import * as shelljs from "shelljs";
+
+console.log("What demo do you wish to run? (Enter a number)");
+
+const schema = {
+    properties: {
+        number: {
+            pattern: /^[0-9]+$/,
+            message: "Please enter a number.",
+            required: true,
+        },
+    },
+};
+
+prompt.start();
+
+prompt.get(schema, (_, result) => {
+    const demoNumber = result.number;
+    const filePath = `./demo/demo${demoNumber}.ts`;
+
+    if (!fs.existsSync(filePath)) {
+        console.error(`demo${demoNumber} does not exist: ${filePath}`);
+        return;
+    }
+    console.log(`Running demo ${demoNumber}`);
+    if (shelljs.exec(`npm run ts-node -- ${filePath}`).code === 0) {
+        console.log("Document created successfully");
+    } else {
+        console.error("Something went wrong with the demo");
+    }
+});
diff --git a/package.json b/package.json
index d34f093a50..999b6b6393 100644
--- a/package.json
+++ b/package.json
@@ -13,7 +13,7 @@
     "tsc": "rimraf ./build && tsc -p .",
     "webpack": "rimraf ./build && webpack",
     "build.web": "webpack --config webpack.web.config.js",
-    "demo": "npm run build && node ./demo",
+    "demo": "npm run build && npm run ts-node ./demo",
     "typedoc": "typedoc src/index.ts",
     "style": "prettier -l \"src/**/*.ts\"",
     "style.fix": "prettier \"src/**/*.ts\" --write",
diff --git a/src/file/table/table.spec.ts b/src/file/table/table.spec.ts
index 21ee3e63d4..65871655b4 100644
--- a/src/file/table/table.spec.ts
+++ b/src/file/table/table.spec.ts
@@ -4,6 +4,7 @@ import { expect } from "chai";
 import { Formatter } from "../../export/formatter";
 import { Paragraph } from "../paragraph";
 import { Table } from "./";
+import { WidthType } from "./table-cell";
 
 const DEFAULT_TABLE_PROPERTIES = {
     "w:tblBorders": [
@@ -174,7 +175,7 @@ describe("Table", () => {
 
     describe("#setWidth", () => {
         it("sets the preferred width on the table", () => {
-            const table = new Table(2, 2).setWidth("pct", 1000);
+            const table = new Table(2, 2).setWidth(WidthType.PERCENTAGE, 1000);
             const tree = new Formatter().format(table);
             expect(tree)
                 .to.have.property("w:tbl")
diff --git a/src/file/table/table.ts b/src/file/table/table.ts
index 335f5fd1c2..0406bdf549 100644
--- a/src/file/table/table.ts
+++ b/src/file/table/table.ts
@@ -12,7 +12,7 @@ import {
 import { IXmlableObject, XmlComponent } from "file/xml-components";
 import { Paragraph } from "../paragraph";
 import { TableGrid } from "./grid";
-import { TableProperties, WidthTypes } from "./properties";
+import { TableProperties } from "./properties";
 
 export class Table extends XmlComponent {
     private readonly properties: TableProperties;
@@ -67,7 +67,7 @@ export class Table extends XmlComponent {
         return this.getRow(row).getCell(col);
     }
 
-    public setWidth(type: WidthTypes, width: number | string): Table {
+    public setWidth(type: WidthType, width: number | string): Table {
         this.properties.setWidth(type, width);
         return this;
     }