package main

import (
	"encoding/json"
	"fmt"
	"os"
)

func printJSON(v interface{}) {
	data, err := json.Marshal(v)
	if err != nil {
		fmt.Fprintf(os.Stderr, "JSON marshal error: %v\n", err)
		os.Exit(1)
	}
	fmt.Println(string(data))
}