Main folders and root level configuration files

Folder

Contents

config

Configuration files; you will need to modify a few of these later.

dist

Distributable files; for example TypeScript files compiled into a bundled JavaScript file.

lib

Compile time files, which you don't modify yourself, but instead modify in the src folder.

node_modules

This contains all the dependencies, literally tens of thousands of files and thousands of folders. It looks ugly and downloading all these files will take a while when you are running the Yeoman SharePoint generator, but they are required for the SharePoint Framework development environment to work.

src

An import folder with the source files that you will modify when building real-life web parts.

temp

Temporary files used by the SharePoint Framework development environment.

typings

TypeScript typing information. No need to modify these.