Use NODE_ENV to test for test environment; improve scripts

server.cjs

@@ -0,0 +1,30 @@
+const { createServer } = require('esbuild-server');
+
+const server = createServer(
+  {
+    bundle: true,
+    entryPoints: ['src/index.js', 'src/map.js'],
+    ...(process.env.NODE_ENV !== 'test') && {
+      outdir: 'build'
+    }
+  },
+  {
+    static: 'public',
+    ...(process.env.NODE_ENV === 'test') && {
+      port: 3005,
+      injectLiveReload: false,
+      watch: false
+    }
+  }
+);
+
+const buildStart = Date.now();
+server
+  .start()
+  .then(() => {
+    console.log(`Build completed in ${Date.now() - buildStart}ms`);
+  })
+  .catch(() => {
+    console.error('Build failed');
+  });
+console.log(`${process.env.NODE_ENV === 'test' ? 'Test' : 'Development'} server running at ${server.url}`);