This project is now archived. If you want to archive, consider checking out obelisk. It has better output format (plain HTML) and IMHO better written than this.
WARC is a Go package that archive a web page and its resources into a single bolt database file. Developed as part of Shiori bookmarks manager.
It still in development phase but should be stable enough to use. The bolt database that used by this project is also stable both in API and file format. Unfortunately, right now WARC will disable Javascript when archiving a page so it still doesn't not work in SPA site like Twitter or Reddit.
To install this package, just run go get :
go get -u -v github.com/go-shiori/warc
WARC is distributed under MIT license, which means you can use and modify it however you want. However, if you make an enhancement for it, if possible, please send a pull request.