A <link rel> attribute is a space-separated token list, but kage matched
the whole string against its set of downloadable rels. So a tag like
<link rel="preload stylesheet" href="/assets/style.css"> matched neither
"preload" nor "stylesheet" and its stylesheet was left on the live web,
absolute and undownloaded.
VitePress ships exactly this form, and it is the only stylesheet on the
page, so a cloned Vue docs site (and any other VitePress site) rendered
completely unstyled offline.
Tokenize the rel and match if any single token is a known asset rel, the
way the HTML spec reads it. This also subsumes the old combined
"shortcut icon" entry, since the "icon" token alone now matches.
kage renders every page in headless Chrome, snapshots the final
DOM, strips all JavaScript, and localises CSS, images, and fonts
so a site can be browsed offline as a plain folder of files.
The engine is split into small packages:
urlx deterministic URL to local-path mapping and scope rules
sanitize remove scripts, on* handlers, and javascript: URLs
asset rewrite HTML and CSS references, download assets
browser headless Chrome pool over the DevTools protocol
robots robots.txt matcher
clone the orchestrator: a polite resumable breadth-first crawl
The cli package wires a cobra and fang command surface with two
commands, clone and serve. Every pure package has table tests; the
browser and clone packages add Chrome-driven end-to-end tests that
skip when no browser is present or under -short.
CI runs gofmt, vet, build, race tests, golangci-lint, govulncheck,
and a tidy check on Linux and macOS. A goreleaser config fans one
tag out to archives, deb/rpm/apk, a Chromium-bundled GHCR image,
and the package managers. A tago docs site builds to Pages and
Cloudflare.
Tam Nguyen Duc