let t1 = infinity->Belt.Float.toInt
let t2 = infinity->Float.toInt

generates

import * as PervasivesU from "./stdlib/pervasivesU.js";

var t1 = PervasivesU.infinity | 0;

var t2 = PervasivesU.infinity | 0;

both are 0. so we don't actually have a way to compare int value with the infinity without %raw. because infinity in pervasive is float

Infinity is often used in arithmetic operations as well as a value indicating "no limit" (e.g. pagination)

#6038 also mentioned