 <p>The example provided in the WebStorm help is for CoffeeScript compiler that has different command-line options. With TypeScript compiler use --sourceMap to generate source maps and --out to specify the output file. Here you can find information about TypeScript compiler and it's options: <a href="https://github.com/Microsoft/TypeScript/wiki/Compiler-Options" rel="nofollow">https://github.com/Microsoft/TypeScript/wiki/Compiler-Options</a> If you're using WebStorm 10, use a built-in TypeScript compiler instead of a file watcher.</p>