in site/src/buildtime/legacyImportDemoInstruction/remarkPlugin.ts [68:80]
function resolveText(text: string) {
const prefix = '#include '
if (!text.startsWith(prefix)) return null
// something like: `"demo/demo1.js"`
const pathWithQuote = text.substr(prefix.length)
const quoteStart = pathWithQuote[0]
const quoteEnd = pathWithQuote[pathWithQuote.length - 1]
if (pathWithQuote.length <= 2) return null
if (quoteStart !== quoteEnd) return null
if (quoteStart !== "'" && quoteStart !== '"') return null
const demoPath = pathWithQuote.substring(1, pathWithQuote.length - 1)
return `./${path.normalize(demoPath)}`
}