import type { NormalizeInput, NormalizeResult } from './types.js';
/**
 * Normalize a data series via min-max scaling or z-score standardization
 *
 * @param input - Data series and method ('min-max' | 'z-score')
 * @returns Normalized values with min/max/mean/stdDev metadata
 * @throws RangeError if data is empty or method is not 'min-max' or 'z-score'
 */
export declare function normalize(input: NormalizeInput): NormalizeResult;
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