Watch and re-transpile any TypeScript file with:

tsc file.ts --watch

Today I’m doing course that uses TypeScript, but I don’t any of the tooling that tells me if I’m writing compilable TypeScript. I’ve got a workaround: watching the file with my compiler.

tsc tutorial/src/index.ts --watch

This returns:

Starting compilation in watch mode.

Now, when I write my tutorial file, the compiler transpiles, giving near-instant feedback that my file is compilable (or not).

See tsc --help for more info.