Devtool: Add small utility to log keys

tools/keys.mjs

@@ -0,0 +1,18 @@
+import * as readline from 'node:readline';
+
+function handler(input, key) {
+  rl.output.write(JSON.stringify(key, null, 2) + `\n`);
+  if (key.ctrl && key.name === 'c') {
+    rl.input.removeListener('keypress', handler);
+    rl.close();
+  }
+}
+
+const rl = readline.createInterface({
+  terminal: true,
+  input: process.stdin,
+  output: process.stdout,
+});
+
+rl.input.on('keypress', handler);
+console.log('Press any key...');