/**
 * Existing-system visual-token extraction (B wave-3 file-size split).
 *
 * Extracted verbatim from `existing-system-service.ts`: the visual
 * token keyword lists, the Less/Sass/CSS/Tailwind parsers, the token
 * classifier, the dedupe cap, and the cross-source inconsistency
 * finder. Function bodies and literals are unchanged (verbatim move);
 * the file walkers and the public `scanExistingSystem` entry stay in
 * the sibling module.
 */
import type { VisualToken, VisualTokenSource } from './scan-types.js';
export declare function classifyToken(name: string): 'color' | 'spacing' | 'typography' | 'radius' | null;
export declare function parseLessOrSassVars(content: string, sourceRel: string): VisualToken[];
export declare function parseCssVars(content: string, sourceRel: string): VisualToken[];
export declare function extractTailwindTokens(projectRoot: string): Promise<{
    tokens: VisualToken[];
    source: VisualTokenSource | null;
}>;
export declare function dedupeTokens(tokens: VisualToken[], max: number): VisualToken[];
export declare function findInconsistencies(tokens: VisualToken[]): string[];