Good Idea. Unfortunately the underlying technique the author has used to achieve this (DOM mutation events) is flawed, deprecated and non-optimal. https://deve

Good Idea. Unfortunately the underlying technique the author has used to achieve this (DOM mutation events) is flawed, deprecated and non-optimal. https://developer.mozilla.org/en-US/docs/DOM/Mutation_events https://developer.mozilla.org/en-US/docs/DOM/Mutation_events "Adding DOM mutation listeners to a document profoundly degrades the performance of further DOM modifications to that document (making them 1.5 - 7 times slower!). Moreover, removing the listeners does not reverse the damage." Using the modern DOM mutation observers may be a better solution.