Learn TypeScript 3 by Building Web Applications

Configuring module transpilation

Now we can discuss another great feature of TypeScript. As you know, at its heart, TypeScript is a transpiler that can do wonders with your code and can make it compatible with older runtime environments, even if you're using the newest ECMAScript features.

TypeScript can actually transpile your modules into different module types, depending on the compiler's configuration. By default, TypeScript generates CommonJS modules, but it also supports the following:

• AMD
• System
• UMD
• ESM
• ESNext: Future ES versions

You can modify the type of modules that you want your code to be transpiled to using the module option.