import { MeasurementXY } from 'cheminfo-types';
import { RangeOptions, SlopeResult } from './types';
/**
 * Calculates the slope of the subthreshold current.
 * @param measurement - The measurement to calculate the subthreshold slope.
 * @param options - Options for the calculation.
 * @returns - The subthreshold slope.
 */
export declare function subthresholdSlope(measurement: MeasurementXY, options?: RangeOptions): SlopeResult | null;
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