One Dev Question - What makes a great extension for VSCode?

In this One Dev Question series on Visual Studio Code, Chris Heilmann (@codepo8), Ramya Achutha Rao (@ramyanexus), Peng Lyu (@njukidreborn), and Daniel Imms (@Tyriar) answer questions about VS Code, a lightweight but powerful source code editor which runs on your desktop and is available for Windows, macOS and Linux.  To learn more and to download VS Code, head to http://aka.ms/VSCode.