feat: redirect Corepack documentation page

src/middleware/redirectionMiddleware.ts

@@ -0,0 +1,21 @@
+import type { Middleware } from './middleware';
+
+/**
+ * Subtitutes a string in a request's url to a different value and sends it
+ *  back to the router to be handled again.
+ *
+ * This is useful for paths like /dist/latest/, where we look for `latest` and
+ *  replace it with whatever the latest version is and send it back to be
+ *  handled by the /dist route.
+ */
+export class RedirectionMiddleware implements Middleware {
+  targetURL: string;
+
+  constructor(targetURL: string) {
+    this.targetURL = targetURL;
+  }
+
+  async handle(): Promise<Response> {
+    return Response.redirect(this.targetURL, 308);
+  }
+}

src/routes/index.ts

@@ -5,6 +5,7 @@ import { NotFoundMiddleware } from '../middleware/notFoundMiddleware';
 import { OptionsMiddleware } from '../middleware/optionsMiddleware';
 import { OriginMiddleware } from '../middleware/originMiddleware';
 import { R2Middleware } from '../middleware/r2Middleware';
+import { RedirectionMiddleware } from '../middleware/redirectionMiddleware';
 import { SubtitutionMiddleware } from '../middleware/subtituteMiddleware';
 import type { Router } from './router';
 
@@ -13,11 +14,16 @@ export function registerRoutes(router: Router): void {
   const cachedR2Middleware = cached(r2Middleware);
   const originMiddleware = new OriginMiddleware();
 
+  const corepackRedirectMiddleware = new RedirectionMiddleware('https://github.com/nodejs/corepack#readme');
+
   router.options('*', [new OptionsMiddleware()]);
 
   router.head('/metrics/?:filePath+', [r2Middleware, originMiddleware]);
   router.get('/metrics/?:filePath+', [cachedR2Middleware, originMiddleware]);
 
+  router.all('/api/corepack.html', [corepackRedirectMiddleware]);
+  router.all('/docs/latest/api/corepack.html', [corepackRedirectMiddleware]);
+
   // Register routes for latest releases (e.g. `/dist/latest/`)
   for (const branch in latestVersions) {
     const latestVersion = latestVersions[branch as keyof typeof latestVersions];