![]() There are no official numbers regarding those limits, but with a small program I wrote, I was able to get them for different Node.js versions on a 64bit architecture. The memory limits of different Node.js versions The results differ depending on the version and the system architecture of your system (32bit or 64bit). If you run into this issue when installing a package with npm or yarn, you can bypass the memory limit temporarily by installing the package as follows: node -max-old-space-size=4096 $(which npm) install -g nextawesomelib What does this error even mean?īy default, Node.js has memory limits that prevent the program from consuming too much memory and crashing the whole system. zshrc, etc.)Īdd this line to your configuration file: ~ /.bashrc export NODE_OPTIONS=-max_old_space_size=4096 “npm install” heap out of memory If you want to change the memory limits of Node.js for your entire environment, you need to set the following variable in your environment’s configuration file. You can set the limit to whatever you like, but make sure you don’t use all the available memory, or otherwise, your system might crash.Īs an alternative to this, you can also set the flag in an environment variable like this: NODE_OPTIONS= "-max-old-space-size=4096" node index.js Change the Node.js memory limits of your environment ![]() Starting from Node.js v8, you can set the limit in MB with the -max-old-space-size flag like this: node -max-old-space-size=4096 index.jsĤ096 translates to 4 GB of memory. The fastest way of solving this issue is by increasing the memory limit of Node. How to solve the “Heap out of memory” error in JavaScript In this short article, I’ll first give you a solution that you can use to fix this issue quickly.Īfter that, in case you want to know more about it, I’ll explain what the causes of this error can be and how to prevent it from happening in the future. I’ve encountered this scary-looking error on multiple occasions when my application ran out of memory.
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