Should I learn DSA with JavaScript/TypeScript or switch languages?

JS/TS is completely capable of teaching DSA. Just make sure you understand what the built-in methods are doing instead of relying on them blindly. For example, try implementing a queue, hash table, linked list, or sorting algorithm yourself so you understand the underlying mechanics. If you later want to learn memory management and get closer to the hardware, C or C++ would be a useful separate exercise, but it isn’t required to learn algorithms well.

Stick with JavaScript or TypeScript. Since you already know the language, you can spend your energy understanding the algorithm instead of learning new syntax and conventions. The frequent recommendations for C++, Java, and Python often come from competitive programming or interview-prep traditions, not because JS is incapable of expressing standard data structures and algorithms.

You can also use a two-step approach: learn and implement an algorithm in TypeScript first, then port a few of the same implementations to another language. That lets you focus on the concepts initially while showing you how language features, memory handling, and standard libraries differ. The core reasoning usually transfers between languages, and even formal algorithm descriptions are often written in pseudocode rather than a specific language.