I'm trying to understand why TypeScript is labeled as a superset of JavaScript, but React doesn't share that designation. React uses valid JavaScript syntax, so doesn't that imply it should also be a superset?
5 Answers
You might be thinking of JSX, which is used in React. While you can embed JavaScript inside JSX, not every valid JavaScript statement is acceptable there—like simple variable declarations. That's why JSX isn’t a superset of JavaScript like TypeScript is.
To clarify, TypeScript extends JavaScript by adding types and other syntax features, meaning any valid JavaScript is valid TypeScript. React, however, simply offers a way to work with JavaScript; it doesn't modify or extend the language in the same way.
Think of it this way: TypeScript is an entire programming language that enhances JavaScript, while React provides tools for building applications within JavaScript. The relationship isn't the same—TypeScript takes the foundation and builds upon it, but React just works on top of it without changing the fundamentals.
React is actually a library, not a programming language. It allows you to write JavaScript (or TypeScript) to build user interfaces, but it doesn't define a new language itself.
Good point! You can say anyone using React is using JavaScript, but using React doesn't make one proficient in JavaScript the way TypeScript does. So, it's all about how these tools function in relation to JavaScript itself.
I see your point! It's more about how you approach the language than just using it, right?