docs(example): fastify example (#1002)

examples/fastify/index.js

@@ -0,0 +1,20 @@
+const fastify = require('fastify')({ logger: true });
+const { createProxyMiddleware } = require('../../dist'); // require('http-proxy-middleware');
+
+(async () => {
+  await fastify.register(require('@fastify/express'));
+
+  const proxy = createProxyMiddleware({
+    target: 'http://jsonplaceholder.typicode.com',
+    changeOrigin: true,
+  });
+
+  fastify.use(proxy);
+
+  fastify.listen({ port: 3000 }, (err, address) => {
+    if (err) throw err;
+    fastify.log.info(`server listening on ${address}`);
+
+    require('open')(`${address}/users`);
+  });
+})();

examples/package.json

@@ -10,8 +10,10 @@
   "author": "chimurai",
   "license": "MIT",
   "devDependencies": {
+    "@fastify/express": "3.0.0",
     "browser-sync": "3.0.2",
     "connect": "3.7.0",
-    "express": "4.19.2"
+    "express": "4.19.2",
+    "fastify": "4.27.0"
   }
 }