export type NodePlatform = 'darwin' | 'win32' | 'linux';
export type NodeArch = 'arm64' | 'x64';
/**
 * Fetch, verify, and cache the official Node.js runtime for a target
 * platform/arch/version, so `murasaki bundle` ships a portable,
 * target-specific node — not whatever node happens to be running the CLI,
 * which is (a) possibly the wrong platform/arch for a cross build, and (b)
 * possibly a non-portable Homebrew/nvm build linked against libs that aren't
 * present on other machines.
 *
 * Cached at `~/.murasaki/node/<version>/<platform>-<arch>/<node|node.exe>`; a
 * second call for the same version/platform/arch returns the cached path
 * immediately with no network access.
 */
export declare function ensureNodeBinary(platform: NodePlatform, arch: NodeArch, version: string): Promise<string>;
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