Bun bun bundling files and being node_modulesless

index.ts

// code extracted from https://github.com/Fire-The-Fox/buchta/blob/master/src/bundler.ts
// Show it some ❤️ by giving it a ⭐
import { spawnSync } from "bun";
import { existsSync, readFileSync, unlinkSync, writeFileSync } from "fs";
import { dirname, relative } from "path";

// run as bun ./index.ts a.ts b.ts ...
const a = process.argv
a.shift()
a.shift()

spawnSync(["bun", "bun", ...a]);

if (!existsSync(`${process.cwd()}/node_modules.bun`)) process.exit(1);

const { stdout } = spawnSync(["bun", `${process.cwd()}/node_modules.bun`]);

const bundleCode = stdout!.toString();

spawnSync(["bun", "build", "--outdir", ".out", ...a]);

process.chdir(".out");

for (const el of a) {
    const content = readFileSync(el, {encoding: "utf-8"});
    const noLocalhost = content.replaceAll(/http.+?(?=\/n)/g, "");
    const newContent = noLocalhost.replaceAll(/\/node_modules.+bun/g, relative(dirname(process.cwd() + "/" + el), process.cwd() + "/bundle.js"));

    writeFileSync(el, newContent);
}

writeFileSync("./bundle.js", bundleCode);

process.chdir("..");

unlinkSync("./node_modules.bun");