Add worker support to examples

examples/resources/common.js

@@ -57,6 +57,8 @@
       event.preventDefault();
       const html = document.getElementById('example-html-source').innerText;
       const js = document.getElementById('example-js-source').innerText;
+      const workerContainer = document.getElementById('example-worker-source');
+      const worker = workerContainer ? workerContainer.innerText : undefined;
       const pkgJson = document.getElementById('example-pkg-source').innerText;
       const form = document.getElementById('codepen-form');
 
@@ -68,22 +70,28 @@
 
       Promise.all(promises)
         .then(results => {
-          const data = {
-            files: {
-              'index.html': {
-                content: html
-              },
-              'index.js': {
-                content: js
-              },
-              "package.json": {
-                content: pkgJson
-              },
-              'sandbox.config.json': {
-                content: '{"template": "parcel"}'
-              }
+          const files = {
+            'index.html': {
+              content: html
+            },
+            'index.js': {
+              content: js
+            },
+            "package.json": {
+              content: pkgJson
+            },
+            'sandbox.config.json': {
+              content: '{"template": "parcel"}'
             }
           };
+          if (worker) {
+            files['worker.js'] = {
+              content: worker
+            }
+          }
+          const data = {
+            files: files
+          };
 
           for (let i = 0; i < localResources.length; i++) {
             data.files[localResources[i]] = results[i];