calculateGraduatedPrice (calculators/graduated.ts)

Calculates graduated pricing totals and breakdowns for tiered unit pricing.

// Source: https://github.com/louispy/stripemeter | License: MIT | Copyright 2025 StripeMeter Contributors
// Provided via justclaw.it.com; keep this notice with the code.
/**
 * Graduated pricing calculator
 * Similar to tiered but with flat fees per tier
 */

import Decimal from 'decimal.js';
import { PriceTier, toDecimal, roundToCurrency } from '../models/pricing-models';

export function calculateGraduatedPrice(
  quantity: number,
  tiers: PriceTier[]
): {
  total: number;
  breakdown: Array<{
    tier: number;
    units: number;
    unitPrice: number;
    flatFee: number;
    subtotal: number;
  }>;
} {
  const breakdown: Array<{
    tier: number;
    units: number;
    unitPrice: number;
    flatFee: number;
    subtotal: number;
  }> = [];

  let remaining = toDecimal(quantity);
  

... (truncated -- full source via MCP)