import (
    "github.com/cateiru/go-http-error/httperror"
    "github.com/cateiru/go-http-error/httperror/status"
)

// Create 404 notfound error
err := status.NewNotFoundError(errors.New("error message")).Wrap()

// Create 404 error, and add filename and line.
fileName := "example.com"
line := 17
err = status.NewNotFoundError(errors.New("error message")).Caller(fileName, line).Wrap()

// Cast to type HTTPError
if castedErr, ok := httperror.CastHTTPError(err); ok {
    fileName := castedErr.FileName
    line := castedErr.Line
    statusCode := castedErr.StatusCode

    unwrapErr := castedErr.Unwrap()
    errMessage  := unwrapErr.Error()
}

// Create custom http status error
err = httperror.NewError(301, errors.New("error message")).Wrap()