Get a list of dependencies required at runtime

deplist.ts

import { nodeFileTrace } from '@vercel/nft';
import path from 'node:path';
import { lstat } from 'node:fs/promises';

async function run() {
    const cwd = process.cwd();
    const dir = process.argv[2];
    if (!dir) {
        throw 'You must specify the directory';
    }

    const stat = await lstat(path.resolve(cwd, dir));
    if (!stat.isDirectory()) {
        throw 'Not a directory';
    }

    const { fileList } = await nodeFileTrace([path.join(dir, 'src', 'index.js')], {
        base: dir,
        ts: true,
    });

    const list = [...fileList]
        .filter(file => file.startsWith('node_modules'))
        .map(file => file.split('/')[1]);

    console.log(new Set(list));
}

run().catch(console.error);