Vue.js And SEO: How To Optimize Reactive Websites For Search Engines And Bots

Do websites created with reactive frameworks get indexed by Google and other search engines? Is it compulsory to set up pre-rendering, as your SEO consultants suggest? Or are they wrong? Reactive JavaScript Frameworks (such as React, Vue.js, and Angular) are all the rage lately, and it's no wonder that they are being used in more and more websites and applications due to their flexibility, modularity, and ease of automated testing.