Why TypeScript?

TypeScript is a tightly coupled language, and it is the superset of JavaScript. It lets us use every piece of code that runs in plain JavaScript. TypeScript is less prone to errors because we must define variable types before using them.

Dynamically-typed languages

Dynamically-typed languages are those in which a variable’s type is checked during runtime. This contrasts with static-typed languages in which the variable’s type is checked during compile time. Dynamically-typed languages require less typing, and combining functions is easy because the language believes we know what we’re doing.