Replace examples test with a runner.js script

Author: nrayburn-tech

examples/runner.js

@@ -0,0 +1,33 @@
+const { readdir } = require('node:fs/promises');
+const { join } = require('node:path');
+
+const projectRootDir = join(__dirname, '..'),
+  examplesDir = join(projectRootDir, 'examples');
+
+for (const dir of ['balancer', 'http', 'middleware', 'websocket']) {
+  readdir(join(examplesDir, dir)).then((files) => {
+    const errors = [];
+    files.forEach((file) => {
+      const example = join(examplesDir, dir, file);
+      try {
+        console.log(`Starting example ${example}`);
+        require(example);
+        console.log(`Finished example ${example}`);
+      } catch (error) {
+        errors.push(error);
+        console.warn(`Error running example ${example}.`, error);
+      }
+    });
+
+    // Using a timeout can be flaky. The alternative is making sure the servers
+    // are closed properly in the examples.
+    setTimeout(() => {
+      if (!errors.length) {
+        process.exit(0);
+      } else {
+        console.error(errors);
+        process.exit(1);
+      }
+    }, 2_000);
+  });
+}

package.json

@@ -27,7 +27,7 @@
   ],
   "scripts": {
     "build": "tsup lib/index.ts --target node16 --format cjs,esm --dts --clean",
-    "watch": "npm run build -- --watch lib",
+    "examples": "npm run build && node examples/runner.js",
     "format": "prettier --write ./lib",
     "lint": "eslint --fix ./lib",
     "test": "vitest run --coverage",