Error handling

Some errors did not cause the Action to fail

src/index.ts

@@ -34,6 +34,7 @@ const workingDir = resetWorkingDir();
 
 async function run(): Promise<{ code: number, msg?: string }> {
   return new Promise(async (resolve, reject): Promise<void> => {
+    try {
       if (versions.length == 0) return resolve({code: 0, msg: 'No version(s) provided to build'});
       if (target.length == 0) return resolve({code: 0, msg: 'No target(s) provided to build'});
 
@@ -135,9 +136,14 @@ async function run(): Promise<{ code: number, msg?: string }> {
         });
       }
 
-    (parallelLimit(tasks, threadCount) as unknown as Promise<unknown[]>)  // Valid according to docs - types outdated?
-        .then(() => resolve({code: 0}))
-        .catch(reject);
+      parallelLimit(tasks, threadCount, ((err, results) => {
+        if (err) return reject(err);
+
+        resolve({code: 0});
+      }));
+    } catch (err) {
+      reject(err);
+    }
   });
 }