import type { DataXY } from 'cheminfo-types';
export interface ReverseIfNeededFilter {
    name: 'reverseIfNeeded';
}
/**
 * Ensure X values are strictly monotonic increasing
 * http://www-groups.mcs.st-andrews.ac.uk/~john/analysis/Lectures/L8.html
 * @param data
 */
export declare function reverseIfNeeded(data: DataXY<Float64Array>): {
    data: DataXY<Float64Array | number[]>;
};
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