*From @NMagno on Tue, 17 Dec 2019 07:41:25 GMT* ### What happened Creating a large list of small maps seems to have poor memory performance. ### How to reproduce [JSfiddle demonstrating the issue.](https://jsfiddle.net/20n58dft/3/) As you can see, the memory usage when making the equivalent list of small maps is significantly larger.  In this image, you see that Immutable is taking about 5x memory usage as the standard JS array. <!-- Provide enough information that someone else could produce the same error. Share code or even better, send a Pull Request with a new failing test case! --> *Copied from original issue: https://github.com/immutable-js/immutable-js/issues/1754*
From @NMagno on Tue, 17 Dec 2019 07:41:25 GMT
What happened
Creating a large list of small maps seems to have poor memory performance.
How to reproduce
JSfiddle demonstrating the issue. As you can see, the memory usage when making the equivalent list of small maps is significantly larger.
In this image, you see that Immutable is taking about 5x memory usage as the standard JS array.
Copied from original issue: immutable-js#1754