export interface OutputValidationResult {
    valid: boolean;
    errors: string[];
    sourceHeadingCount: number;
    outputHeadingCount: number;
}
/**
 * Validate that a rendered DOCX preserves the heading structure of the source template.
 * Extracts word/document.xml via AdmZip before scanning for heading styles.
 */
export declare function validateOutput(sourceDocxPath: string, outputDocxPath: string): OutputValidationResult;
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