JavaScript heap out of memory

This error occurs when the JavaScript code tries to allocate more memory than what is available in the heap. The heap is a region of memory where objects are stored during runtime.

There are a few possible causes for this error:

1. Memory leak: If the code is creating and storing large amounts of data in memory without releasing it, the heap can quickly fill up and cause this error.

2. Large data sets: If the code is processing large data sets, it may require more memory than what is available in the heap.

3. Recursion: If the code is using recursion, it can quickly consume all available memory in the heap.

To fix this error, you can try the following:

1. Optimize code: Make sure that the code is optimized and not creating unnecessary objects or storing excessive data in memory.

2. Increase heap size: You can increase the heap size by using the --max-old-space-size flag when running the code. For example, node --max-old-space-size=4096 script.js

3. Use streams: If the code is processing large data sets, consider using streams to process the data in smaller chunks instead of loading it all into memory at once.

4. Use garbage collection: Make sure that the code is releasing memory when it is no longer needed by using garbage collection.