git diff to understand untracked files detected

Author: adampetro

util/expand-liquid.js

@@ -111,11 +111,18 @@ function ensureNoGitChanges() {
   exec('git status --porcelain', (error, stdout, _stderr) => {
     if (error) {
       console.error(`error calling \`git status\`: ${error}`);
-      return;
+      process.exit(1);;
     }
     if (stdout) {
       console.error('Untracked files detected:\n', stdout);
-      process.exit(1);
+      exec('git diff', (error, stdout, _stderr) => {
+        if (error) {
+          console.error(`error calling \`git diff\`: ${error}`);
+        } else {
+          console.log(`Git diff:\n${stdout}`);
+        }
+        process.exit(1);
+      });
     }
   });
 }