The lesson is to understand how reactivity works with the tech stack your project is built with.
This is a problem with react, and it's middlewares where things become a convoluted mess if there isn't at least one person that's experienced with what's actually happening and is attentive to avoid pitfalls with potential side-effects.
This is a problem with react, and it's middlewares where things become a convoluted mess if there isn't at least one person that's experienced with what's actually happening and is attentive to avoid pitfalls with potential side-effects.