Which react stack to choose in 2020?

Question

JavaScript

Good afternoon. Now I'm practically a junior react developer. And now I decide what to study next.
I look at the MERN bundle, but it seems to be outdated, and express needs to be changed to next.js.
Will the stack be normal: MongoDB, Next.js, React.js, Node.js ?
For SPA development.

Answer 1

Will the stack be normal: MongoDB, Next.js, React.js, Node.js ?

More than enough for a small SPA. I would say a typical default/ideal stack.

but it seems to be outdated, and express needs to be changed to next.js.

You can also replace Next with Koa, but this is optional.
Ps well, add redux to react and use it.