Syntax highlighting for gsx source, built on tree-sitter. Renders to HTML with semantic classes, so one stylesheet themes light and dark without re-highlighting.

h, err := gsxhl.New()
if err != nil {
	return err
}
html, err := h.Highlight(gsxhl.LangGSX, source)
// <span class="ts-keyword">component</span> <span class="ts-function">Card</span>…

Highlight returns inner HTML only — wrap it in your own <pre><code>.

Inside gsx source, CSS and JavaScript are injected automatically into <style>/<script> bodies and css`…` /js`…` literals. Because Go is native to the grammar, a plain .go snippet highlights through LangGSX with no separate configuration.

Every token carries a ts- class derived from its tree-sitter capture: ts-keyword, ts-tag, ts-attribute, ts-function-method, and so on. CaptureNames() returns every capture the package can emit, in highlight order — useful for generating a stylesheet that covers all of them.

.ts-keyword { color: #7c3aed; }
.ts-tag     { color: #1e3a8a; }

tree-sitter is C, so this package requires cgo. Callers that ship a CGO_ENABLED=0 binary (a static/distroless server, say) should highlight at build time and embed the resulting HTML, rather than linking this in.

The gsx highlight and injection queries arrive with the parser from tree-sitter-gsx, so they can never disagree with the grammar they run against. The CSS and JavaScript queries are copies — //go:embed cannot read across module boundaries — refreshed with make sync-queries and checked against their pinned grammars by TestQueriesCompile.