import type { RoiInput, RoiResult } from './types.js';
/**
 * Return on investment (ROI) calculation
 *
 * @param input - ROI input with investment, annual return and years
 * @returns Total/annualized ROI, payback period, total return and net profit
 * @throws RangeError if investment, annualReturn or years is not > 0
 */
export declare function roi(input: RoiInput): RoiResult;
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