This condition is unnecessary？

[hefeng6500]

Learning-JavaScript-Data-Structures-and-Algorithms-Third-Edition/LearningJavaScriptDataStructuresandAlgorithmsThirdEdition_Code/src/js/data-structures/avl-tree.js

Line 135 in 520e02f

this.getBalanceFactor(node.left) === BalanceFactor.BALANCED ||

Dear loiane.

I think this line is unnecessary, when the node is balanced, it not need to be rotate. it will be cause error if rotate bananced node

[loiane]

Thanks for the comment, could you please raise a PR for the fix?