Cleaner serverless function

cors-proxy/index.mjs

@@ -1,49 +1,44 @@
-import https from 'node:https';
 import process from 'node:process';
 
 export const handler = async (event) => {
   const targetUrl = process.env.PROXY_TARGET_URL;
 
-  const postData = event.body;
-
-  const options = {
+  const response = await fetch(targetUrl, {
     method: 'POST',
+    body: event.body,
     headers: {
-      'Content-Type': 'application/x-www-form-urlencoded',
+      'Content-type': 'application/x-www-form-urlencoded',
     },
-  };
-
-  return new Promise((resolve, _reject) => {
-    const req = https.request(targetUrl, options, (response) => {
-      let data = '';
-
-      // Collect response data
-      response.on('data', (chunk) => (data += chunk));
-
-      // When the request is complete
-      response.on('end', () => {
-        resolve({
-          statusCode: 200,
-          headers: {
-            'Content-Type': 'application/json',
-          },
-          body: JSON.stringify({
-            status: response.statusCode,
-            headers: response.headers,
-            body: data,
-          }),
-        });
-      });
-    });
-
-    req.on('error', (error) => {
-      resolve({
-        statusCode: 500,
-        body: JSON.stringify({ message: 'Error in request', error: error.message }),
-      });
-    });
+    mode: 'no-cors',
+  });
 
-    req.write(postData);
-    req.end();
+  if (response.status >= 200 && response.status < 300) {
+    return {
+      statusCode: 200,
+      headers: {
+        'Content-Type': 'application/json',
+      },
+      body: JSON.stringify({
+        status: response.status,
+        body: await response.text(),
+      }),
+    };
+  }
+
+  console.error('Received an error response', {
+    statusCode: response.status,
+    message: response.message,
+    headers: response.headers,
   });
+
+  return {
+    statusCode: 400,
+    headers: {
+      'Content-Type': 'application/json',
+    },
+    body: JSON.stringify({
+      error: 'Failed to submit form',
+      status: response.status,
+    }),
+  };
 };

cors-proxy/serverless.yaml

@@ -7,7 +7,7 @@ provider:
   runtime: nodejs20.x
 
 functions:
-  proxy:
+  cors-proxy:
     handler: index.handler
     events:
       - http: