jsonStringify bug

[zjb0807]

const jsonStringify = (spec: any) =>
  // JSON.stringify will serialize big number to scientific notation such as 1e+21, which is not supported by Substrate
  JSON.stringify(spec, (_, v) => (typeof v === 'number' ? `@${BigInt(v).toString()}@` : v), 2).replace(
    /"@(.*?)@"/g,
    '$1',
  );

const balances = 2000000000000000000000000;

console.log(jsonStringify(balances));

1999999999999999966445568