/**
 * @packageDocumentation
 *
 * Helpers for normalizing design token inputs into theme records.
 */
import type { DesignTokens } from '../../core/types.js';
/**
 * Normalize and validate design token input.
 *
 * Accepts either a design token object or a theme record mapping theme names to
 * token sets. The tokens are parsed using the DTIF parser and returned as a
 * consistent theme record keyed by theme name.
 *
 * @param tokens - Token input to normalize.
 * @returns A promise resolving to a record of design tokens keyed by theme name.
 * @throws {DtifTokenParseError} When token parsing fails.
 * @throws {Error} When token definitions are invalid.
 *
 * @example
 * ```ts
 * import { normalizeTokens } from '@lapidist/design-lint/utils';
 * const themes = await normalizeTokens({
 *   light: { color: { primary: { $type: 'color', $value: '#000' } } },
 * });
 * console.log(Object.keys(themes));
 * ```
 */
export declare function normalizeTokens(tokens: unknown): Promise<Record<string, DesignTokens>>;
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