A quick run down of some of the important commands that can be run when at the root of the project.
npm run install:all Install package dependencies for both the extension and React webview source code.
npm run start:webview Runs the React webview source code in development mode. Open http://localhost:3000 to view it in the browser.
npm run build:webview Build React webview source code. Must be executed before compiling or running the extension.
npm run compile Compile VS Code extension