import type { LinearInterpolationInput, LinearInterpolationResult } from './types.js';
/**
 * Linear interpolation (and extrapolation) over a tabulated x/y series
 *
 * @param input - x/y table and target x value
 * @returns Interpolated value with bracketing indices and extrapolation flag
 * @throws RangeError if x or y is missing, x and y lengths differ,
 *   or fewer than 2 points are provided
 */
export declare function linearInterpolation(input: LinearInterpolationInput): LinearInterpolationResult;
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