log( "CHILD: url received from parent process", url) Ĭonst browser = await puppeteer. The code snippet below is a simple example of running parallel downloads with Puppeteer.Ĭonst downloadPath = path. 💡 If you are not familiar with how child process work in Node I highly encourage you to give this article a read. We can combine the child process module with our Puppeteer script and download files in parallel. To skip the download, download into another path, or download a different browser, see Environment variables. Child process is how Node.js handles parallel programming. To use Puppeteer in your project, run: npm i puppeteer or 'yarn add puppeteer' When you install Puppeteer, it downloads a recent version of Chromium (170MB Mac, 282MB Linux, 280MB Win) that is guaranteed to work with the API. We can fork multiple child_proces in Node. Puppeteer runs in headless mode by default. Our CPU cores can run multiple processes at the same time. Puppeteer is a Node.js library which provides a high-level API to control Chrome/Chromium over the DevTools Protocol. There are 284 other projects in the npm registry using types/puppeteer.
Start using types/puppeteer in your project by running npm i types/puppeteer. Latest version: 7.0.4, last published: 6 months ago. 💡 Learn more about the single threaded architecture of node here Stub TypeScript definitions entry for puppeteer, which provides its own types definitions. Therefore if we have to download 10 files each 1 gigabyte in size and each requiring about 3 mins to download then with a single process we will have to wait for 10 x 3 = 30 minutes for the task to finish. It can only execute one process at a time. You see Node.js in its core is a single-threaded system. However, if you have to download multiple large files things start to get complicated. In this next part, we will dive deep into some of the advanced concepts. Puppeteer is a headless Node library that provides a high level API for controlling Chromium or.
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