message: Fix BigInt fallback
diff: @@ -6,7 +6,7 @@ import { Kind } from 'graphql/language/kinds';
  const coerceBigInt = (value: any) => {
  if (typeof BigInt === 'undefined') {
  - const number = value.replace('n', '');
  + const number = value.toString().replace('n', '');
  if (!Number.isInteger(number)) {
  throw new Error(`${value} is not an integer!`);
  }
  