rollback worker refactor

Author: aorcsik

src/js/changelog/worker.js

@@ -1,51 +1,52 @@
-export default {
-  async fetch(request) {
-    const urlObject = new URL(request.url);
-
-    let useCors = false;
-    let transformBody = null;
-    urlObject.hostname = 'webflow.bitrise.io';
-
-    if (urlObject.pathname.match(/^\/changelog\/api\/(.+\.json)$/)) {
-      urlObject.hostname = 'discuss.bitrise.io';
-      urlObject.pathname = urlObject.pathname.replace(/^\/changelog\/api\/(.+\.json)$/, '/$1');
-      useCors = true;
-    } else if (urlObject.pathname.match(/^\/changelog\.json$/)) {
-      urlObject.hostname = 'web-cdn.bitrise.io';
-      urlObject.pathname = 'changelog.json';
-      useCors = true;
-    } else if (urlObject.pathname.match(/^\/changelog_latest\.json$/)) {
-      urlObject.hostname = 'web-cdn.bitrise.io';
-      urlObject.pathname = 'changelog_latest.json';
-      useCors = true;
-    } else if (urlObject.pathname.match(/^\/changelog\.xml$/)) {
-      urlObject.hostname = 'web-cdn.bitrise.io';
-      urlObject.pathname = 'changelog.xml';
-    } else if (urlObject.pathname.match(/^\/changelog\/.+/)) {
-      const originalPath = urlObject.pathname;
-      urlObject.pathname = '/changelog/topic';
-      transformBody = (data) => data.replace('https://bitrise.io/changelog/topic', `https://bitrise.io${originalPath}`);
-    }
-
-    if (!useCors && !transformBody) {
-      return fetch(urlObject);
-    }
-
-    let response = await fetch(urlObject);
-    const responseBody = await response.text();
-    response = new Response(responseBody, response);
-
-    if (transformBody) {
-      response.body = transformBody(responseBody);
-    }
-
-    if (useCors) {
-      // Set CORS headers
-      response.headers.set('Access-Control-Allow-Origin', '*');
-      // Append to/Add Vary header so browser will cache response correctly
-      response.headers.append('Vary', 'Origin');
-    }
-
-    return response;
-  },
-};
+/**
+ *
+ * @param {Promise<Response>} originalResponse
+ * @returns {Promise<Response>}
+ */
+async function addCorsHeaders(originalResponse) {
+  let response = await originalResponse;
+  // Recreate the response so you can modify the headers
+
+  response = new Response(response.body, response);
+  // Set CORS headers
+
+  response.headers.set('Access-Control-Allow-Origin', '*');
+
+  // Append to/Add Vary header so browser will cache response correctly
+  response.headers.append('Vary', 'Origin');
+
+  return response;
+}
+
+addEventListener('fetch', (event) => {
+  const urlObject = new URL(event.request.url);
+  let useCors = true;
+
+  urlObject.hostname = 'webflow.bitrise.io';
+
+  if (urlObject.pathname.match(/^\/changelog\/api\/(.+\.json)$/)) {
+    urlObject.hostname = 'discuss.bitrise.io';
+    urlObject.pathname = urlObject.pathname.replace(/^\/changelog\/api\/(.+\.json)$/, '/$1');
+    useCors = true;
+  } else if (urlObject.pathname.match(/^\/changelog\.json$/)) {
+    urlObject.hostname = 'web-cdn.bitrise.io';
+    urlObject.pathname = 'changelog.json';
+    useCors = true;
+  } else if (urlObject.pathname.match(/^\/changelog_latest\.json$/)) {
+    urlObject.hostname = 'web-cdn.bitrise.io';
+    urlObject.pathname = 'changelog_latest.json';
+    useCors = true;
+  } else if (urlObject.pathname.match(/^\/changelog\.xml$/)) {
+    urlObject.hostname = 'web-cdn.bitrise.io';
+    urlObject.pathname = 'changelog.xml';
+    useCors = true;
+  } else if (urlObject.pathname.match(/^\/changelog\/.+/)) {
+    urlObject.pathname = '/changelog/topic';
+  }
+
+  if (useCors) {
+    event.respondWith(addCorsHeaders(fetch(urlObject)));
+  } else {
+    event.respondWith(fetch(urlObject));
+  }
+});