/**
 * @packageDocumentation
 * Helpers for normalizing nested default exports across ESM and CJS interop.
 */
/**
 * Unwrap nested `.default` layers that can appear when ESM-only unified plugins
 * are loaded through CommonJS interop.
 *
 * @param value - Imported module or value.
 *
 * @returns The innermost default export when one exists, otherwise the original
 *   value.
 */
export declare const resolveDefaultExport: <T>(value: T) => T;
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