The actual default options for argon2 hash produces

console.log(hash("123456"));
// $argon2id$v=19$m=19456,t=2,p=1$s8PyJzwJrGsbdsRzx4du5g$2lD5nmjRI3zTeUci5GJoAuVMGV9viplQuEHwG3wT14o

Indicating memoryCost = 19 * 2 ** 10, timeCost = 2, instead of what are suggested in docs:

...The default value is 4096, meaning a pool of 4 MiB per thread.

...The default value is 3.