@xallindrome-labs/pricing-domain

A small, dependency-free pricing model: a base package, per-unit overage and monthly add-ons. Pure functions, so it runs the same in a browser widget, a serverless function or a test. "Unit" is whatever you sell in quantity (posts, hours, seats, deliverables).

npm install @xallindrome-labs/pricing-domain

import { calculatePricing, EXAMPLE_PRICING_CONFIG } from "@xallindrome-labs/pricing-domain";

const result = calculatePricing(
  { packageKey: "starter", premiumUnits: 2, baseUnits: 5, selectedAddOnKeys: ["monthly_review"] },
  EXAMPLE_PRICING_CONFIG
);
console.log(result.totalMonthlyRevenue); // 830

Also exported: parsePricingConfig / parsePublicPricingConfig (JSON string to config, null if malformed), toPublicPricingConfigResponse and toPublicPricingEstimate (shape output for visitors, without margin or overhead), and the TypeScript types. EXAMPLE_PRICING_CONFIG holds example numbers only; replace them with your own.

Part of xallindrome-widgets. MIT licensed.

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