The outer shell looks the same as the old one, but the engine is a piece of art. In the new version, there is no leftover code from Vue 2. The core team built the framework from the ground up using TypeScript and rewrote everything geared to the maximum performance of the framework.
TypeScript was chosen to create a more maintainable code base for the Vue core team and the open-source community, and to improve the autocomplete features, such as IntelliSense or typeahead that the IDEs and code editors provide, without the need for special plugins and extensions.
