refactor: extract core logic to a plain Go package

commands/config.go

@@ -0,0 +1,28 @@
+package commands
+
+import (
+	"github.com/jimeh/evm/manager"
+	"github.com/spf13/cobra"
+)
+
+func NewConfig(mgr *manager.Manager) (*cobra.Command, error) {
+	cmd := &cobra.Command{
+		Use:       "config",
+		Short:     "Show evm environment/setup details",
+		Aliases:   []string{"env", "info"},
+		ValidArgs: []string{},
+		RunE:      configRunE(mgr),
+	}
+
+	cmd.Flags().StringP("format", "f", "", "output format (yaml or json)")
+
+	return cmd, nil
+}
+
+func configRunE(mgr *manager.Manager) runEFunc {
+	return func(cmd *cobra.Command, _ []string) error {
+		format := flagString(cmd, "format")
+
+		return render(cmd.OutOrStdout(), format, mgr.Config)
+	}
+}