How to cache wasm module in nodejs, or it's already cached on startup ?

[miqbalrr]

according to this rustwasm/wasm-bindgen#2473

Summary

I created comparison between manual javascript haversine function, and wasm based.
the result if i compared including the module initialization, wasm based getting much slower than javascript itself.

Additional Details

console.time("manual")
const haversinee = require("../func/haversine")
const src = {
    lat: -7.0,
    lng: 7.0
}

const dst = {
    lat: -8.0,
    lng: 8.0
}
console.log("manual js : "+ haversinee(src, dst, false))
console.timeEnd("manual")

console.time("wasm")
const {Point, haversine} = require("haversinecalc") // this is the problem

const src_p = new Point(-7.0,7.0)
const dst_p = new Point(-8.0,8.0)

console.log("using wasm : "+ haversine(src_p, dst_p))
console.timeEnd("wasm")

Result with module initialization included

manual js : 156581.10278754708
manual: 12.337ms
using wasm : 156581.10278754708
wasm: 18.109ms

Result without module initialization

manual js : 156581.10278754708
manual: 7.709ms
using wasm : 156581.10278754708
wasm: 0.287ms