fix: only cleanup if req + show help on no command

Author: jlengstorf

bin/dev.js

@@ -105,10 +105,12 @@ export const handler = async ({
 };
 
 cleanup((exitCode, signal) => {
-  log(' -> cleaning up temporary files');
   // Delete the temporary directory.
-  cleanUpTempDir().then(() => {
-    success('Successfully shut down. Thanks for using GrAMPS!');
+  cleanUpTempDir().then(shouldPrintShutdownMessage => {
+    if (shouldPrintShutdownMessage) {
+      success('Successfully shut down. Thanks for using GrAMPS!');
+    }
+
     process.kill(process.pid, signal);
   });
 

bin/gramps.js

@@ -4,5 +4,5 @@ import dev from './dev';
 
 yargs
   .command(dev)
-  // .demandCommand()
+  .demandCommand()
   .help().argv;

lib/data-sources.js

@@ -31,7 +31,15 @@ const getDirName = dir =>
     .slice(-1)
     .pop();
 
-export const cleanUpTempDir = () => del(TEMP_DIR, { force: true });
+export const cleanUpTempDir = () => {
+  if (fs.existsSync(TEMP_DIR)) {
+    log(' -> cleaning up temporary files');
+    return del(TEMP_DIR, { force: true });
+  }
+
+  // If there’s no temp dir, return a resolved promise (basically a no-op).
+  return Promise.resolve(false);
+};
 
 const makeTempDir = tmpDir =>
   new Promise((resolve, reject) => {