If you're extending the `EventEmitter` class from Node.js and encounter the error TS2307 or TS2339, it means you're missing the Node.js type definitions. To fix this, install the typings by running `yarn add @types/node@12 --dev --tilde`. This solution has been tested with TypeScript 3.9.3 and Node.js 12.18.0 LTS.
TypeScript 3.8 introduces a new feature called top-level await. It allows developers to use the `await` keyword without a surrounding `async` function at the top level of a module.
There are several libraries available for building command-line interface (CLI) tools in Node.js, such as optimist, minimist, yargs, Caporal.js, and commander. In this article, the author shares their favorite CLI builder, commander, because it comes with TypeScript definitions.