yaml

package main

import (
	"fmt"
	"log"
	"strings"

	json2yaml "github.com/booleanism/huma/v2/yaml"
)

func main() {
	input := strings.NewReader(`{"Hello": "world!"}`)
	var output strings.Builder
	if err := json2yaml.Convert(&output, input); err != nil {
		log.Fatalln(err)
	}
	fmt.Print(output.String())
}

Output:

Hello: world!