change demos to typescript and WidthType disparity

demo/index.js

@@ -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');
-    }
-});

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");
+    }
+});