export type MidiPortList = {
    inputs: Array<{
        index: number;
        name: string;
    }>;
    outputs: Array<{
        index: number;
        name: string;
    }>;
};
export declare function listMidiPorts(): MidiPortList;
export declare function resolvePortIndexByEnvOrName(opts: {
    kind: 'input' | 'output';
    ports: Array<{
        index: number;
        name: string;
    }>;
    envVar: string;
}): number;
export declare function resolvePortIndexByEnvOrAutoDetect(opts: {
    kind: 'input' | 'output';
    ports: Array<{
        index: number;
        name: string;
    }>;
    /** Exact override via env var (index or exact name). */
    envVar: string;
    /** Optional shared hint; can be partial name; used only when envVar is unset. */
    sharedHintEnvVar?: string;
}): number;