addConfig.js

import * as fs from "fs"

// check if the file path is provided
if (process.argv.length < 3) {
  console.log("Offer a file path as argument to add Vercel config, Please!")
  process.exit(1)
}

const filePath = process.argv[2]

// the content to add in the file
const contentToAdd = `
// fix for Vercel. esbuild JS error: Error: Dynamic require of "assert" is not supported
// https://github.com/evanw/esbuild/issues/1921#issuecomment-1898197331

import { createRequire } from 'node:module';
import path from 'node:path';
import url from 'node:url';

globalThis.require = createRequire(import.meta.url);
globalThis.__filename = url.fileURLToPath(import.meta.url);
globalThis.__dirname = path.dirname(__filename);

export const config = {
	supportsResponseStreaming: true,
	api: {
		badyParse: false,
	},
}
export const dynamic = 'force-dynamic'

`

fs.readFile(filePath, "utf8", (err, data) => {
  if (err) {
    console.error(`Cannot read file: ${err.message}`)
    process.exit(1)
  }
  const newData = contentToAdd + data

  fs.writeFile(filePath, newData, "utf8", (err) => {
    if (err) {
      console.error(`Cannot write file: ${err.message}`)
      process.exit(1)
    }

    console.log("Add Vercel config in compiled JS file successfully!")
  })
})