TypeScript

console.log("Hello World!");

Links

• https://www.typescriptlang.org/docs/handbook/tsconfig-json.html

• https://www.typescriptlang.org/docs/handbook/declaration-files/do-s-and-don-ts.html

• https://www.typescriptlang.org/docs/handbook/interfaces.html

• https://ahnheejong.name/articles/safe-data-modeling-using-disjoint-union-type/