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

according to this https://github.com/rustwasm/wasm-bindgen/issues/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

首先使用 require("../func/haversine") 和 require("haversinecalc") 重现计时比较，然后阅读链接的 wasm-bindgen issue，了解模块初始化的上下文。一个有用的结果是提供一份文档化的回答，解释相关的 Node.js 模块加载行为，以及如何将初始化与重复调用分开进行基准测试。