Node.js turns 10 in a few months. TypeScript is 6 years old. Webpack is 6 years old. React is 5 years old. Redux is 3 years old.
Front end JS and TS went through a phase of rapid change 2 to 6 years ago, but I don't think that rapid change is still happening. Certainly there are new libraries, and maintainers still like to play fast and loose with backwards compatibility, but it's not obvious that you have to keep up to date with every single new framework anymore.
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How about all the libraries and tools turn over every two months? Oh, there's JavaScript!
Node.js turns 10 in a few months. TypeScript is 6 years old. Webpack is 6 years old. React is 5 years old. Redux is 3 years old.
Front end JS and TS went through a phase of rapid change 2 to 6 years ago, but I don't think that rapid change is still happening. Certainly there are new libraries, and maintainers still like to play fast and loose with backwards compatibility, but it's not obvious that you have to keep up to date with every single new framework anymore.