import type { RuntimePort } from '@flyingrobots/bijou';
/**
 * Attempt to detect the system's refresh rate in Hz.
 *
 * Currently defaults to 60, but provides an anchor for future
 * platform-specific detection (e.g. via native calls or shell commands).
 *
 * @returns Detected refresh rate or 60.
 */
export declare function detectRefreshRate(): number;
/**
 * Create a {@link RuntimePort} backed by Node.js `process` globals.
 *
 * Delegates environment variable lookups to `process.env` and terminal
 * geometry queries to `process.stdout`/`process.stdin`. Falls back to
 * sensible defaults (80 columns, 24 rows, non-TTY) when the underlying
 * properties are `undefined`.
 *
 * @returns A {@link RuntimePort} wired to the current Node.js process.
 */
export declare function nodeRuntime(): RuntimePort;
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