Implement queue work and listen commands

src/cli/Directive.ts

@@ -468,4 +468,22 @@ export abstract class Directive extends AppClass {
     protected nativeOutput(...outputs: any[]): void {
         console.log(...outputs)  // eslint-disable-line no-console
     }
+
+    /**
+     * Get a promise that resolves after SIGINT is received, executing a
+     * callback beforehand.
+     * @param callback
+     * @protected
+     */
+    protected async untilInterrupt(callback?: () => unknown): Promise<void> {
+        return new Promise<void>(res => {
+            process.on('SIGINT', async () => {
+                if ( callback ) {
+                    await callback()
+                }
+
+                res()
+            })
+        })
+    }
 }