yarn add @chainsafe/dappeteer puppeteer esbuild esbuild-register

import puppeteer, { Page } from 'puppeteer';import dappeteer from '@chainsafe/dappeteer';import fs from 'fs';const collectionName = "Your Collection Name"const collectionURL = `https://opensea.io/collection/${collectionName}/assets/create`const openseaDescription = `Your description here`const lockedContent = `Locked content text here`

const connectWallet = async (page: Page, metamask) => {  const button = await page.$('button.dBFmez:first-child');  await button.click();  await metamask.approve();  return;}

const uploadImage = async (page: Page, file: string) => {  const elementHandle = await page.$("#media");  await elementHandle.uploadFile(`images/${file}`);  return;}

const pageTimeout = async (time: number, page: Page) => {  await page.waitForTimeout(time)  return;}

const fillFields = async (page: Page, fileName: string) => {// Get and fill in the input name  await page.focus('#name')  await page.keyboard.type(fileName)  await pageTimeout(1000, page)//Get and fill in the input name  await page.$eval('#description', (el, value) => el.value = value, openseaDescription);  await page.focus('#description')  await page.keyboard.type(' ')  await pageTimeout(1000, page)// Click on the unlockable content checkbox  await page.evaluate(() => {    document.querySelector("#unlockable-content-toggle").parentElement.click();  });  await pageTimeout(1000, page)// Fill in the unlockable content text  await page.$eval('textarea[placeholder="Enter content (access key, code to redeem, link to a file, etc.)"]', (el, value) => el.value = value, lockedContent);  await page.focus('textarea[placeholder="Enter content (access key, code to redeem, link to a file, etc.)"]')  await page.keyboard.type(' ')// Open the select chain input  const input = await page.$("#chain")  input.click()  await pageTimeout(1000, page)// Select the polygon chain  await page.click('img[src="/static/images/logos/polygon.svg"]')  return;}

(async () => { // Async function because we need promises to do it  const browser = await dappeteer.launch(puppeteer, { metamaskVersion: 'v10.1.1' }); // Launch the browser with metamask  const metamask = await dappeteer.setupMetamask(browser, { seed: "Secret phase here"}); // Add your secret phase here to metamask connect with your account  const files = await fs.promises.readdir("images/"); // Get an List with all images on images folder  files.shift() // WARN: just on macOS: remove the first file .DS_Store // Open the create assets url of the  collection  const page = await browser.newPage();  await page.goto(collectionURL);// Get the tabs and close the first tab openned by the dappeteer  const firstTabs = await browser.pages()  await firstTabs[0].close()  await pageTimeout(2000, page)// Run our function to click on the Metamask button in the Opensea  await connectWallet(page, metamask)// Start the loop on each image of images folder  for (let i = 0; i <= files.length ; i++) {    const tabs = await browser.pages() // Get the tabs on each loop    const data = {      name: `Your Asset name here #${1 + i}`, // Add your NFT name (the count start on 1 and stop on the quantity of the files)    }// At the first time on loop you need to do an sign to create the assets     if(i === 0) {      await tabs[1].bringToFront() // Move one tab      await tabs[1].goto(collectionURL) // Change the page to collection url again      await pageTimeout(2000, page)      await metamask.sign() // Use the metamask to do the transaction      await metamask.page.waitForTimeout(2000) // wait for the transaction    }// Now if not the first time, after creating the first NFT just open the create assets page again to create the second NFT and so sequentially.    if(i === 0) {      await tabs[1].bringToFront()      await tabs[1].goto(collectionURL)    } else {      await tabs[1].bringToFront()      await tabs[1].goto(collectionURL)    }    await pageTimeout(2000, page)// Upload the current image file    await uploadImage(page, files[i]);// Fill the fields using the asset name with the count    await fillFields(page, data.name);// Click on create asset button    const button = await page.$('.AssetForm--action button');    await button.click()    await pageTimeout(4000, page)// Rename the image name to know if already is completed    fs.renameSync(`images/${files[i]}`, `images/completed-${files[i]}`)    console.log({ message: `Mint the NFT: ${data.name}`, fileName: files[i]})    console.log(`Mint the NFT: ${data.name}`)  }  console.log('Minted all NFTs with success')})();

{  "name": "node",  "version": "1.0.0",  "main": "index.js",  "license": "MIT",  "dependencies": {    "@chainsafe/dappeteer": "^2.2.0",    "dappeteer": "^1.0.0",    "esbuild": "^0.13.10",    "esbuild-register": "^3.0.0",    "puppeteer": "^10.4.0"  },  "scripts": {    "es": "node -r esbuild-register"  }}

yarn es ./src/script.ts