Microsoft's open-source programming language TypeScript – the alter ego of JavaScript but with a type system – turns 10 years old this December. It's grown to become a go-to language for building apps ...

TypeScript is a variant of JavaScript that provides strong type information, a powerful development tool that minimizes bugs and makes JavaScript programs easier to build in enterprise settings.

When classes are more structure than you need, tuples let you specify simple type-safe aggregates of other data types. They'll also let you create a dictionary collection…but it won't be type-safe. In ...