export interface VersionCheckOptions {
    /** Host's own versions of shared deps. Example: `{ react: '18.3.1' }` */
    host: Record<string, string>;
    /** Remote-reported versions. */
    remote: Record<string, string>;
    /** Which deps must be singleton — mismatches become errors instead of warnings. */
    singletons?: string[];
    /** Logger. Defaults to console.warn/console.error. */
    log?: (level: 'warn' | 'error', message: string) => void;
}
export interface VersionMismatch {
    dep: string;
    host: string;
    remote: string;
    severity: 'warn' | 'error';
}
export declare function checkVersions(opts: VersionCheckOptions): VersionMismatch[];
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