How does TypeScript provide me with insights even before compiling with tsc?

As I follow the instructions for incorporating TypeScript into my existing React Native project here, the final step instructs me to:

Run yarn tsc to type-check your new TypeScript files.

However, when I check VSCode, I am already receiving feedback from TypeScript. Do I really need to use tsc in a React Native environment? According to this post, there may not even be a need for an outDir and the RN documentation does recommend setting noEmit to true. Thank you!

Answer №1

One major advantage of using VS Code is that it comes pre-installed with the TypeScript language server, providing seamless TypeScript support without the need for manual setup. But to compile and execute your application, you'll still need to configure a build tool or script that utilizes the tsc compiler.

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