Typescript is a superset of Javascript It adds additional features to the Javascript It is strictly typed. It throws an error during compile time where as Javascript won't It improves the productivity
Single-page applications are the modern method of app creation. These apps are accessed from the browser and don't require a page load while using. Advantages Faster Development code reusability performance easy maintenance
The framework makes developers easy by generating boilerplate code and providing the required tools(libraries) for development. Developers can put more focus on logic and framework takes care of skeleton Example : SPFx
The library provides a set of functions for the program and it can be used at multiple places. The new features can be added to the programs easily example: Jquery