The speed at which you can develop an SPA in Angular or React depends on the number of libraries with ready functionality that are available for your developers. Having necessary libraries on-hand lets us develop an application faster. In this regard, ReactJS has several shortcomings.
As we’ve suggested, ReactJS is suitable for developing small applications that will be extended with more functionality. React’s architecture is easier to scale than the classical MVC architecture in AngularJS. But this flexibility comes at a cost: developers must think hard about which instruments are best for a certain project. Given that React’s community – and the number of tools – are growing rapidly, choosing the right tool for a project can take some time.
This list of ReactJS libraries is hardly comprehensive. Having choices is generally a good thing, but at the first stage of app development it may be a bit difficult to figure out the best options. With AngularJS, everything is much simpler: we just add a library to our dependencies and start working instantly. In addition, AngularJS offers some valuable features in the standard package. For example, it’s preconfigured with Karma for testing purposes.
In short, starting to develop an app in Angular is definitely faster than in React. However, we should add that AngularJS also requires some libraries to address certain issues such as Search Engine Optimization (SEO).