Merge pull request #1043 from aligent/revert-1040-feature/JBH-615_set…

…_is_a_bot_header

Revert "JBH-615: Set is a bot header"

packages/lambda-at-edge-handlers/lib/prerender-check.ts

@@ -11,31 +11,25 @@ export const handler = async (
 ): Promise<CloudFrontRequest> => {
   let request = event.Records[0].cf.request;
 
-  /**
-   * If the request is from a bot, is not a file and is not from prerender
-   *  then set the x-request-prerender header so the origin-request lambda function
-   *  alters the origin to prerender.io
-   * "x-is-a-bot" header should be whitelisted in the respective behaviors
-   */
-  if (IS_BOT.test(request.headers["user-agent"][0].value)) {
-    request.headers["x-is-a-bot"] = [
+  // If the request is from a bot, is not a file and is not from prerender
+  // then set the x-request-prerender header so the origin-request lambda function
+  // alters the origin to prerender.io
+  if (
+    !IS_FILE.test(request.uri) &&
+    IS_BOT.test(request.headers["user-agent"][0].value) &&
+    !request.headers["x-prerender"]
+  ) {
+    request.headers["x-request-prerender"] = [
       {
-        key: "x-is-a-bot",
+        key: "x-request-prerender",
         value: "true",
       },
     ];
-    if (!IS_FILE.test(request.uri) && !request.headers["x-prerender"]) {
-      request.headers["x-request-prerender"] = [
-        {
-          key: "x-request-prerender",
-          value: "true",
-        },
-      ];
 
-      request.headers["x-prerender-host"] = [
-        { key: "X-Prerender-Host", value: request.headers.host[0].value },
-      ];
-    }
+    request.headers["x-prerender-host"] = [
+      { key: "X-Prerender-Host", value: request.headers.host[0].value },
+    ];
   }
+
   return request;
 };