Mastering TypeScript 3 - Third Edition

Using --watch and Grunt

In a bare-bones environment, any change to a TypeScript file means that we need to reissue the tsc command from the command line every time we wish to compile our project. Obviously, it is going to be very tedious to have to switch to the command prompt and manually compile our project every time we have made a change. Fortunately, the TypeScript compiler provides the --watch option that will run a background task to monitor files for changes, and automatically recompile them when a change is detected. From the command line, we can run the following:

tsc --watch

Here, we have invoked the TypeScript compiler with the --watch option, which will then start the compilation step in watch mode. As and when we modify .ts ...