Support for Emmet snippets and expansion is built right into Visual Studio Code, no extension required . Emmet 2.0 has support for the majority of the Emmet Actions including expanding Emmet abbreviations and snippets . Emmet is a web-developer’s toolkit that can greatly improve your HTML & CSS workflow Links: Emmet in Visual Studio Code Cheat Sheet (emmet.io)
The SharePoint PnP Core Provisioning Engine supports certain tokens which will be replaced by corresponding values during provisioning. These tokens can be used to make the template site collection independent for instance. PnP-Sites-Core/ProvisioningEngineTokens.md at master · pnp/PnP-Sites-Core · GitHub