/**
 * Opt-in access to Node-only capabilities, kept out of the static module graph.
 *
 * Two SDK features are genuinely Node-specific: relaxing TLS verification for
 * local development (`node:https`) and caching sample datasets on disk
 * (`node:fs` and friends). Neither can work on an Edge runtime, and a *static*
 * `import ... from "node:fs"` anywhere in the graph makes the whole package
 * unimportable there — bundlers such as wrangler and the Vercel Edge builder
 * fail to resolve the specifier at build time, before any call is made.
 *
 * So the specifier is assembled at call time. A bundler sees `import(name)`
 * with a runtime value and leaves it alone, which keeps `cyborgdb` importable
 * everywhere; the feature simply degrades on hosts that have no such module.
 */
/** True when running on Node (as opposed to a browser or an Edge runtime). */
export declare function isNodeRuntime(): boolean;
/**
 * Import a Node builtin by bare name (e.g. `"fs"`), or resolve to `undefined`
 * when the host has no such module.
 *
 * @param name Builtin name without the `node:` prefix.
 * @returns The module namespace, or `undefined` off Node / on failure.
 */
export declare function optionalNodeBuiltin<T = unknown>(name: string): Promise<T | undefined>;