I assume that most senior developers in the team had to learn all the components used and how they work,
you can use npm without knowing what package.json is but you will have to learn the details eventually, if you use gulp you will have to learn how to edit the gulp file when you need to do a specific task,l you probably had to learn what source files are and how to set them up and others.
If you do not know this eventually you will have to learn them.
Other platforms have similar magic, like Visual Studio hides complexity from you but on complex projects or weird issues you will have to learn how it works under the hood(compiler, linker , compiler flags, you may want to drop the GUI for building and use the CLI for flexibility)