Function getCodeFromError

@app/lib/src/errors.ts:36–41

(
  error: null | Error | ApolloError | GraphQLError
)

}

export function getCodeFromError(
  error: null | Error | ApolloError | GraphQLError
): null | string {
  const err = getExceptionFromError(error);
  return (err && err["code"]) || null;
}