The Heap Memory allocation is only possible with primitive variables. Memory stored in the heap will live on unless it is explicitly deleted or deallocated. The heap is a large chunk of contiguous memory blocks and is expected to remain so even after allocation and deallocation. If a sufficient chunk is not found, the program will request an increase in heap space.

13m read timeFrom blog.appsignal.com
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Heap Allocation in Node.jsWhy Is Efficient Heap Memory Usage Important in Node.js?Causes of Node.js Memory Leaks in the HeapHow to Find Memory Leaks in Node.jsHow Garbage Collection WorksFix Memory Leaks in Your Node.js AppWrap UpSources and Further Reading
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