feat: handle termination

bin/index.js

@@ -42,6 +42,14 @@ async function run() {
   // initial kickoff
   await fetchAndIndex().catch(handleError);
 
+  // listen for termination
+  const terminate = () => {
+    console.log('Terminating...');
+    process.exit(0);
+  };
+  process.on('SIGINT', terminate);
+  process.on('SIGTERM', terminate);
+
   // scheduled running
   if (interval === 0) return;
   logger.debug(`Starting interval (${interval}s)...`);