fix: return error code from process when exiting

Author: chenasraf

bin/script_runner.dart

@@ -1,3 +1,5 @@
+import 'dart:io' as io;
+
 import 'package:script_runner/src/base.dart';
 import 'package:script_runner/src/utils.dart';
 
@@ -10,8 +12,12 @@ Future<void> main(List<String> args) async {
   final scriptCmd = args.first;
   final scriptArgs = args.sublist(1);
   try {
-    await runScript(scriptCmd, scriptArgs);
+    final code = await runScript(scriptCmd, scriptArgs);
+    io.exit(code);
   } catch (e, stack) {
     printColor('$e\n$stack', [TerminalColor.red]);
+    if (e is io.ProcessException) {
+      io.exit(e.errorCode);
+    }
   }
 }

lib/src/base.dart

@@ -1,19 +1,20 @@
 import 'package:script_runner/src/config.dart';
 
 /// Runs a script with the given name, and any extra arguments.
-Future<void> runScript(String entryName, List<String> args) async {
+/// Returns the exit code.
+Future<int> runScript(String entryName, List<String> args) async {
   final config = await ScriptRunnerConfig.get();
   if (config.scripts.isEmpty) {
     throw StateError('No scripts found');
   }
   if (['-h', '--help'].contains(entryName)) {
     config.printUsage();
-    return;
+    return 0;
   }
   if (['-ls', '--list'].contains(entryName)) {
     final search = args.isNotEmpty ? args.first : '';
     config.printScripts(search);
-    return;
+    return 0;
   }
   final entry = config.scriptsMap[entryName];
   if (entry == null) {

lib/src/runnable_script.dart

@@ -101,7 +101,7 @@ class RunnableScript {
   }
 
   /// Runs the current script with the given extra arguments.
-  Future<dynamic> run(List<String> extraArgs) async {
+  Future<int> run(List<String> extraArgs) async {
     final effectiveArgs = args + extraArgs;
     final config = await ScriptRunnerConfig.get(_fileSystem);
 
@@ -135,6 +135,7 @@ class RunnableScript {
         );
         throw e;
       }
+      return exitCode;
     } finally {
       await _fileSystem.file(scrPath).delete();
     }