> javascript resources are written in typescript by default with nothing for regular javascript. This is the same problem that happened when JQuery hit its peak

> javascript resources are written in typescript by default with nothing for regular javascript. This is the same problem that happened when JQuery hit its peak popularity That's definitely a potential issue - JavaScript is the fundamental standard, not JQuery and not TypeScript. Certainly there are situations where maximum forward-compatibility is important (learning resources are a good example) and for those, vanilla JavaScript is the best choice. All of the old resources that relied on JQuery are now hopelessly outdated, whereas the contemporary ones that used plain JavaScript are as valid now as when they were written. I'm sure the same will be true of TypeScript vs JavaScript when the next big thing comes along.