getIterate.js performance issues

I’ve encountered performance issues in my code (which uses filterDeep) and after some research using Chrome DevTools performance tab, it seems that the getIterate.js file causes performance issues.

Here are 2 images displaying the results of the performance test recordings:

I understand that there must be a deep scan to search for a path which might be relevant for the user (was specified in childrenPath). but maybe one of these suggestions can help:

1. Add a maxScanDepth (number) option, which will limit the depth of the search for cases where the user knows his deep object’s structure and doesn’t want to scan all the paths in the scanned object.
2. Add a isExactChildrenPath (boolean) for cases where only the paths specified by the user in the childrenPath parameter are relevant and there is no need to search other paths (Ofcourse he must supply the full path).
3. As mentioned in this stackoverflow question and was tested here it is possible to use spread instead of concat for better performance. like this: currentParents = [...parents, currentObj]; instead of currentParents = parents.concat(currentObj); or childPath = [...path, childKey]; instead of childPath = (path || []).concat([childKey]);

[YuriGor]

Ok, I will review it tonight. Thank you for contribution!

[YuriGor]

Merged and published as v4.2.14 Please test and put a star if everything still works 😉