As you can see Bootstrap is here, I use it in the case when I need UI now and it’s not so important to build a completely custom Front-End from scratch.
Front-End Stack that I currently use
- Layout HTML5
- Framework React + (Flux pattern or Redux + Redux Saga)
- Styles SCSS
- Language TypeScript / ES6
- Compiler Webpack + Babel with Node.js
I try to follow the Best Standards in the industry and always open my mind to learning new things. Someone might prefer older Angular or a simpler Vue, they both do a similar job to React.