update libraries/deno-commons-mod.ts

libraries/deno-commons-mod.ts

@@ -29,6 +29,18 @@ export class ProcessOutput {
         }
         return this;
     }
+
+    getStdoutAsStringThenTrim(): string {
+        return this.stdout.trim();
+    }
+
+    getStdoutAsJson(): any {
+        return JSON.parse(this.stdout);
+    }
+
+    getStderrAsJson(): any {
+        return JSON.parse(this.stderr);
+    }
 }
 
 export async function execCommand(