Incompatibility with the standard library

[sitnikovv]

big.Int values are incorrectly encoded:

• Golang 1.20.4
• Ubuntu 20.04.6 LTS
• goccy/go-json 0.10.2

package main

import (
	"bytes"
	"encoding/json"
	"fmt"
	"math/big"

	gojson "github.com/goccy/go-json"
)

func main() {
	a := big.NewInt(123567890)
	for i := 0; i < 6; i++ {
		a = a.Mul(a, a)
	}
	buf := bytes.Buffer{}
	enc := json.NewEncoder(&buf)
	if err := enc.Encode(a); err != nil {
		fmt.Println("failed to encode standard lib, err:", err)
		return
	}
	fmt.Println("Standard library OK")

	buf = bytes.Buffer{}
	encGo := gojson.NewEncoder(&buf)
	if err := encGo.Encode(a); err != nil {
		fmt.Println("failed to encode gojson, err:", err)
	}
}

Standard library OK
failed to encode gojson, err: json: error calling MarshalJSON for type *big.Int: strconv.ParseFloat: parsing "76200948414809119462531517826850960536131686363643267779709124660654187935282503001491794421771859987339009662441641350849331462938930835750824029814149852045881073085880629334064792752258111170220340054386254402830248902603478625028789666943107329593265071439381436119961510836736786097741991680557441102980977291137567585278607104182762284525606679219639314814207975210733462121321620125633045954506623680366327265258003639207705816681123566475526950410000000000000000000000000000000000000000000000000000000000000000": value out of range