@medusajs/utils
Version:
Medusa utilities functions shared by Medusa core and Modules
37 lines • 1.5 kB
JavaScript
;
Object.defineProperty(exports, "__esModule", { value: true });
exports.calculateTaxTotal = calculateTaxTotal;
exports.calculateAmountsWithTax = calculateAmountsWithTax;
const big_number_1 = require("../big-number");
const math_1 = require("../math");
function calculateTaxTotal({ taxLines, taxableAmount, setTotalField, }) {
if (math_1.MathBN.lte(taxableAmount, 0)) {
return math_1.MathBN.convert(0);
}
let taxTotal = math_1.MathBN.convert(0);
for (const taxLine of taxLines) {
const rate = math_1.MathBN.div(taxLine.rate, 100);
let taxAmount = math_1.MathBN.mult(taxableAmount, rate);
if (setTotalField) {
;
taxLine[setTotalField] = new big_number_1.BigNumber(taxAmount);
}
taxTotal = math_1.MathBN.add(taxTotal, taxAmount);
}
return taxTotal;
}
function calculateAmountsWithTax({ taxLines, amount, includesTax, }) {
const sumTaxRate = math_1.MathBN.div(math_1.MathBN.sum(...((taxLines ?? []).map((taxLine) => taxLine.rate) ?? [])), 100);
const taxableAmount = includesTax
? math_1.MathBN.div(amount, math_1.MathBN.add(1, sumTaxRate))
: amount;
const tax = calculateTaxTotal({
taxLines,
taxableAmount,
});
return {
priceWithTax: includesTax ? amount : math_1.MathBN.add(tax, amount).toNumber(),
priceWithoutTax: includesTax ? math_1.MathBN.sub(amount, tax).toNumber() : amount,
};
}
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