node-red-contrib-puppeteer-js 运行JavaScript代码并返回结果 input { url: 'https://www.npmjs.com', payload: ` const sleep = (s) => new Promise((resolve) => setTimeout(resolve, s * 1000)); await sleep(2) return 123 ` } 'data:image/png;base64,' + msg.screenshot 相关文档 https://pptr.dev