How much does a middle frontend developer need to know other languages ​​and libraries?

Question

Career in IT

Hi all. Need your advice and thoughts.
As a profession, I started studying front-end a little over a year ago. Before that, it was just a hobby + small freelance website development. I did designs in Photoshop, but I moved away from it a long time ago, now I'm trying to create layouts in Figma. Now I know html, css, native js (free with google search), pug, jquery (I peep in google), sass/scss/stylus, bootstrap, svg. I work with CMS WordPress, Bitrix, Joomla at an intermediate level. I can work with Gulp / Node.js, but not in a team (I work purely within the framework of my projects - push / pool, merging, commits and, roughly speaking, everything).
Now more and more often I meet demo projects of developers on Vue and React (examples can be found on codepen), which also connect Canvas and various libraries like WebGL, Three.js, GSAP, which load the browser very heavily. I am very interested in the question, how much do they need for a web / frontend developer? I have not yet seen ready-made sites on pure vue/react + these libraries. But if I understand correctly, they are only needed to create applications, not websites. Is it so?
I still consider myself a junior and this question has been bothering me for several months =) Tell me, are Vue React, WebGL, Three.js and GSAP mandatory for a middle frontend developer (in this case, website development)? There are no plans to develop applications yet.
Say no and I'll breathe a sigh of relief))

Answer 1

Well, you definitely need one of the frameworks. Vue or React, it doesn't matter. WebGL, Three.js, GSAP are needed if you plan to work with graphics, animation - not everyone knows this, it's not worth worrying about this yet (although this is a rather interesting area). Look at the vacancies of middle front-end developers, as a rule, everything is listed there.
It is not necessary for the front-end'er to learn this, leave this job to the designers. Although it is always useful to expand one's horizons, and the front-end developer is close to working with designers, it would be nice to understand the specifics of their work.
You saw it, you just didn't know it.

Answer 2

If you have a need to use them, then yes, if not, you can forget about them.

Answer 3

Other languages ​​- optional, but generally desirable, for general development. If there is an opportunity at work to touch other languages ​​at the expense of the employer, then my advice is not to neglect it.
Also with frameworks - theoretically, there are options to get a job without knowledge of React / Vue / Angular (WebGL, ThreeJS did not meet in the requirements at all, I think these are very specific vacancies), but this is one vacancy for a couple of hundred, I think. Yes, and it’s more convenient with them, they weren’t just invented like that.
Learn new things, looking back at the vacancies you are interested in and the requirements in them.