By default, Node has a relatively low limit on the amount of memory it will use (I believe 1GB). As you get close to this, it thrashes as it tries to garbage co

By default, Node has a relatively low limit on the amount of memory it will use (I believe 1GB). As you get close to this, it thrashes as it tries to garbage collect more and more frequently. You can increase the limit by running `node --max-old-space-size=8192`. But that doesn't seem to fix this specific issue, either with the Map or the Object!