If you need to create a version of a class from several sources or just want to merge default values with a user's input, object spreading solves your problem. JavaScript won't let you do this (yet) ...

Microsoft’s strongly typed JavaScript is now available in a production release, featuring new checks for variables that ... including JavaScript, TypeScript, PHP, Python, Ruby, Rust, and Go.

Although namespaces had useful features like scopes that could merge across files, making it easy to break up a project across files and expose it as a single variable, most modern JavaScript and ...