Which is even stranger cause I explicitly used product: 'chrome' in the launch options.Ĭause the executablePath is something like: node_modules/puppeteer/.local-chromium/mac-756035 which does not exist.
“PUPPETEER_PRODUCT=firefox yarn install” to download a supported Firefox browser binary.’ Run “PUPPETEER_PRODUCT=firefox npm install” or Where as in version 5.4.1 I get a different error:Ĭould not find browser revision 809590. Run “npm install” or “yarn install” to download a browser binary. In version 5.0.0 I get the following error:Ĭould not find browser revision 756035. Tried puppeteer versions 5.0.0 and 5.4.1 (The Puppeteer API documentation goes through each of the various methods and functions used here it’s very helpful) After you’ve added the above code to app.js, we’ll edit our GET route.I have not set the environment variable to skip the download.When using puppeteer.launch(), I found out it is looking for this folder: node_modules/puppeteer/.local-chromium/mac-756035 which does not exist. log( "CHILD: url received from parent process", url) Ĭonst browser = await puppeteer.When installing Puppeteer using npm install puppeteer, it does not download a recent version of Chromium as it is mentioned in the documentation. 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. Child process is how Node.js handles parallel programming. We can fork multiple child_proces in Node. Our CPU cores can run multiple processes at the same time. 💡 Learn more about the single threaded architecture of node here 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.
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