Use Patchwerk to create RFC6902 JSON patches.
At the moment of writing this is the only working Go library for creating JSON patches. If you wish to apply the patches I recommend using evanphx/json-patch (it only allows for applying patches, not generating them).
The project was originally cloned from mattbaird/jsonpatch.
go get github.com/herkyl/patchwerkpackage main
import (
"fmt"
"github.com/herkyl/patchwerk"
)
func main() {
a := `{"a":100, "b":200}`
b := `{"a":100, "b":200, "c":300}`
patch, err := patchwerk.DiffBytes([]byte(a), []byte(b))
if err != nil {
fmt.Printf("Error creating JSON patch: %v", err)
return
}
fmt.Println(string(patch)) // [{"op": "add", "path": "/c", "value": 300}]
}