Angular 7 comes with including various upgradation in dependencies and major 3rd party projects dependencies have been upgraded.

• TypeScript 3.1
• RxJS 6.3
• Node 10

Angular 7 have updated TypeScript version from 2.7 to 3.1 which is it’s the latest release. It’s necessary while working with Angular 7 to use TypeScript’s latest version.

The current version of RxJs,6.3.3 is added in Angular 7 with its new exciting additional features and changes. These changes provide developers a boost in performance and make easier to debug call stacks and enhancement in modularity also making it as backward compatible as possible.

Node v10 is the latest version of the Node.js platform which is used by the Angular CLI, It's most front-end development tools nowadays. Angular v7 has now support for v10 of Node but v8 is also still being supported.