/**
 * Detects the old `createCellBorders()` schema-default shape.
 * These borders have `{ size, color }` without a `val` property on every side.
 *
 * @param {Record<string, any> | null | undefined} borders
 * @returns {boolean}
 */
export function isLegacySchemaDefaultBorders(borders: Record<string, any> | null | undefined): boolean;
/**
 * Converts old px-based `attrs.borders` to OOXML format for `tableCellProperties.borders`.
 *
 * @param {Record<string, any>} borders - Old-format borders `{ top: { size, color, val? }, ... }`
 * @returns {Record<string, any>} OOXML-format borders `{ top: { val, size, space, color }, ... }`
 */
export function convertBordersToOoxmlFormat(borders: Record<string, any>): Record<string, any>;
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