LANG
The language a client highlights a file in, by its extension (or a file definition's format).
export const LANG: Record<string, string> = { ts: "ts", tsx: "tsx", js: "js", md: "markdown", json: "json", yml: "yaml", yaml: "yaml", toml: "toml", sh: "sh", css: "css", html: "html", svg: "xml", csv: "csv" }