To install the development dependencies, you will at least need Node 8 installed.
We use Yarn as our package manager. It will install all dev dependencies and the dependencies in the actual packages.
For building all of the packages run:
Lint & Formatting & Typechecking
To lint, format, and type check the project run the following commands:
yarn lint yarn format yarn typecheck
Using karma (real browsers will get launched).
Notice: When you change the source files of packages, you will need to rebuild the project.