Why Javascript Heap out of Memory?

This is commonly caused when JavaScript has a lot of processes to handle, and the default heap memory allocated by Node. js needs more space to process the script you are currently running. ... To fix this kind of error, you need to add the --max-old-space-size option before running your script.

What is JavaScript heap memory?

The heap is a different space for storing data where JavaScript stores objects and functions. Unlike the stack, the engine doesn't allocate a fixed amount of memory for these objects. Instead, more space will be allocated as needed. Allocating memory this way is also called dynamic memory allocation.

How increase JavaScript heap size?

JavaScript heap out of memory - how to increase the max memory for Node with max_old_space_size. If you want to increase the max memory for Node you can use --max_old_space_size option. You should set this with NODE_OPTIONS environment variable.