import type { DesignTokens } from '../core/types.js';
/**
 * Load and validate design tokens defined in configuration.
 *
 * Token groups or entire design token objects may be provided inline as
 * objects, or as file paths relative to a base directory. Each token set is
 * parsed and validated using the DTIF parser.
 *
 * @param tokens - Token definitions or file path references keyed by theme.
 * @param baseDir - Directory used to resolve token file paths.
 * @returns A theme record or single design token object.
 * @throws {DtifTokenParseError} When token parsing fails.
 * @throws {Error} When token files cannot be read.
 *
 * @example
 * ```ts
 * const tokens = await loadTokens({ light: './light.tokens.json' }, process.cwd());
 * console.log(Object.keys(tokens));
 * ```
 */
export declare function loadTokens(tokens: unknown, baseDir: string): Promise<DesignTokens | Record<string, DesignTokens>>;
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