This sample code uses YamlDotNet to parse yaml and inherits from FileConfigurationSource and FileConfigurationProvider: Creating a custom ConfigurationProvider in ASP.NET Core to parse YAML.
A very usefull minimal http static file server in Asp.Net core (Starting a http file server from the file explorer using .NET Core – Meziantou’s blog). Can also be regsitered in Explorer contextual menu.
How to use CookieTempDataProvider to prevent requerying data during subsequent get request: Post-Redirect-Get and TempData with ASP.NET Core – Meziantou’s blog
A list of what is available after console. in a dev tools console Mastering The Developer Tools Console – Treehouse Blog (sometime restricted to Chrome).