Remove NoExecError

command.go

@@ -9,15 +9,6 @@ import (
 	"github.com/mfridman/cli/pkg/suggest"
 )
 
-// NoExecError is returned when a command has no execution function.
-type NoExecError struct {
-	Command *Command
-}
-
-func (e *NoExecError) Error() string {
-	return fmt.Sprintf("command %q has no execution function", getCommandPath(e.Command.state.commandPath))
-}
-
 // Command represents a CLI command or subcommand within the application's command hierarchy.
 type Command struct {
 	// Name is always a single word representing the command's name. It is used to identify the

parse.go

@@ -201,9 +201,7 @@ func Parse(root *Command, args []string) error {
 	root.state.Args = finalArgs
 
 	if current.Exec == nil {
-		return &NoExecError{
-			Command: root, // Pass the root command which has the state with the full path
-		}
+		return fmt.Errorf("command %q: no exec function defined", getCommandPath(root.state.commandPath))
 	}
 	return nil
 }

parse_test.go

@@ -90,14 +90,20 @@ func TestParse(t *testing.T) {
 			Name: "foo",
 			Exec: func(ctx context.Context, s *State) error { return nil },
 			SubCommands: []*Command{
-				{Name: "bar"},
+				{
+					Name: "bar",
+					Exec: func(ctx context.Context, s *State) error { return nil },
+					SubCommands: []*Command{
+						{
+							Name: "baz",
+						},
+					},
+				},
 			},
 		}
-		err := Parse(cmd, []string{"bar"})
+		err := Parse(cmd, []string{"bar", "baz"})
 		require.Error(t, err)
-		var noExecErr *NoExecError
-		require.ErrorAs(t, err, &noExecErr)
-		assert.ErrorContains(t, err, `command "foo bar" has no execution function`)
+		assert.ErrorContains(t, err, `command "foo bar baz": no exec function defined`)
 	})
 	t.Run("parsing errors", func(t *testing.T) {
 		t.Parallel()