import type { MeasurementXY } from 'cheminfo-types';
import type { SpectrumSelector } from '../types/SpectrumSelector.js';
/**
 * Retrieve the spectrum with only X/Y data that match all the selectors
 * If more than one variable match the selector the 'x' or 'y' variable will be
 * taken
 * @param spectra
 * @param selector
 */
export declare function getXYSpectrum(spectra?: MeasurementXY[], selector?: SpectrumSelector): MeasurementXY | undefined;
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