//#region src/HtmlPreview/const.d.ts /** * Default sandbox attribute for HTML preview iframes. * * Why this exact set: * - `allow-scripts` — required by the use case (three.js / p5.js / Tailwind * CDN style demos). Without it inline preview degrades to source view. * - `allow-forms` — lets demos handle `

` submissions in-frame. * - `allow-modals` — `alert`/`confirm`/`prompt` are common in toy demos. * * Deliberately omitted: * - `allow-same-origin` — would let scripts read parent cookies / localStorage * under cloud deployments, and bridge the IPC boundary on desktop builds. * - `allow-popups`, `allow-top-navigation` — phishing surface. * * Override at your own risk via `sandbox` prop. */ declare const DEFAULT_SANDBOX = "allow-scripts allow-forms allow-modals"; declare const DEFAULT_HEIGHT = 400; /** * Is the content a "full" HTML document (has `` or ``)? * Fragments without these markers render poorly inline and should not auto-mount. */ declare const isFullHtmlDocument: (content: string) => boolean; /** * Heuristic for whether streaming HTML is "stable enough to mount the iframe". * Re-mounting srcDoc on every token reboots scripts (p5.js setup runs each * time), so we wait for a clear closing signal. */ declare const isHtmlContentClosed: (content: string) => boolean; /** * Does the content contain a `