Wrong type interence with objects

[mikhailKilin]

good interence:
cosnt fn = (a, b) => a + b;
const res = fn(1, 2) //type is number

bad inference:
const fn = (a) => a.a + a.b;
const res = fn({a: 1, b: 2}) // type is number | string | bigint, but it can be just a number

[JSMonk]

Thank you for contribution ^_^