find the size of a json file in go

main.go
package main

import (
	"encoding/json"
	"fmt"
	"io/ioutil"
)

func main() {
	filePath := "example.json"
	
	// read the JSON file into memory
	jsonData, err := ioutil.ReadFile(filePath)
	if err != nil {
		panic(err)
	}

	// unmarshal the JSON data to a map[string]interface{}
	var jsonMap map[string]interface{}
	if err := json.Unmarshal(jsonData, &jsonMap); err != nil {
		panic(err)
	}

	// find the length of the JSON data
	fileSize := len(jsonData)

	fmt.Printf("The size of %s is %d bytes\n", filePath, fileSize)
}
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