Salert

A library for efficient sales amounts calculations, including discounts, subtotal before taxes, taxes and total amounts.

Features

• Sales items calculations (discount, subtotal, taxes, total).
• Sales calculations (discount, subtotal, taxes, total).

Usage

Example for SRI invoice (Ecuador):

// VAT tax with 13%.
final vat = Tax(code: 'IVA13', unitValue: 13);
// Invoice item (product or service).
final item = Item(code: 'productX', quantity: 1, unitPrice: 10, taxes: [vat]);
// The sale (aka Invoice)
final sale = Sale(items: [item], tip: 1);
// Calculate sale values.
print('SUBTOTAL  ${sale.subtotal}');
print('TAX  ${sale.tax}');
print('TOTAL  ${sale.total}');