/**
 * Extension path resolution — single source of truth.
 *
 * Used by sessions.ts at runtime and by tests for validation.
 * Logging is handled by the caller (sessions.ts) to avoid coupling
 * this module to the logger.
 */
export interface ResolveResult {
    path: string;
    error?: string;
}
export declare function resolveExtensionPath(envVar: string, packageName: string, entryFile: string): string;
export declare function resolveExtensionPathDetailed(envVar: string, packageName: string, entryFile: string): ResolveResult;