import type { DoubleArray, DoubleMatrix } from 'cheminfo-types';
import type { Spectrum } from '../spectrum/Spectrum.js';
export interface GetNormalizedDataOptions {
    /**
     * IDs of selected spectra
     */
    ids?: string[];
}
export interface NormalizedDataResult {
    ids: string[];
    meta: Array<Record<string, any>>;
    x: DoubleArray;
    matrix: DoubleMatrix;
}
/**
 * Get normalized data from spectra
 * @param spectra - Array of spectrum objects
 * @param options - Options for filtering spectra
 * @returns Normalized data with ids, matrix, meta, and x values
 */
export declare function getNormalizedData(spectra: Spectrum[], options?: GetNormalizedDataOptions): NormalizedDataResult;
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