in extension.ts [7:21]
export function activate(ctx: ExtensionContext) {
// Use the console to output diagnostic information (console.log) and errors (console.error)
// This line of code will only be executed once when your extension is activated
console.log('Congratulations, your extension "Wordcount" is now active!');
// create a new word counter
let wordCounter = new WordCounter();
let controller = new WordCounterController(wordCounter);
// add to a list of disposables which are disposed when this extension
// is deactivated again.
ctx.subscriptions.push(controller);
ctx.subscriptions.push(wordCounter);
}