Move to Yarn workspaces

[prastut]

Task:

Port our codebase to yarn workspaces so that there is a common node_modules folder and we don't repeat package installation.

Reference:

https://medium.com/@kohlandpen/yarn-workspaces-cra-now-fullstack-react-%EF%B8%8F-35bcb9229f79

More info:

Currently, our client and server are entirely decoupled into different folders but housed under one repository for easier code management.

Most apps are moving towards a monolithic structure where codebase lives in one repo, but each folder can serve as a microservice. Essentially it's not mandatory to have different repos for decoupled structures when we can simply have one single repo. I was against the microservice folder structure from the start of the trend, I liked the concept in terms of abstraction but a concept shouldn't hamper developer productivity. Afterall tools are made for us, not the other way round.

Coming back to our architecture, we have client which is bootstrapped with create-react-app package and server which is bootstrapped with node/express combination. As you can see both folders have node_modules. What I would like is a central node_modules folder. Why? Because most of the libraries are shared between client and server for eg: I want to use moment both on the client as well as the server side. Currently, in our architecture, I have to install it twice.

We need to lift the node_modules to the parent folder and then symlink packages inside these folders. Yarn workspaces enables this.