@rnw-community/react-native-payments/dist/esm/util/validate-total.util.js

Accept Payments with Apple Pay and Android Pay using the Payment Request API.

import { isDefined, isNumber } from '@rnw-community/shared';
import { isValidDecimalMonetaryValue } from './is-valid-decimal-monetary-value.util';
const isNegative = (amountValue) => isNumber(amountValue) ? amountValue < 0 : amountValue.startsWith('-');
export const validateTotal = (total, ErrorType = Error) => {
    // Should Validator take an errorType to pre populate "Failed to construct 'PaymentRequest'"
    if (!isDefined(total)) {
        throw new ErrorType(`required member total is undefined.`);
    }
    // Check that there is a total
    if (!isDefined(total.amount) || !isDefined(total.amount.value) || Number(total.amount.value) === 0) {
        throw new ErrorType(`Missing required member(s): amount, label.`);
    }
    const totalAmountValue = total.amount.value;
    // Check that total is a valid decimal monetary value.
    if (!isValidDecimalMonetaryValue(totalAmountValue)) {
        throw new ErrorType(`'${totalAmountValue}' is not a valid amount format for total`);
    }
    // Check that total isn't negative
    if (isNegative(totalAmountValue)) {
        throw new ErrorType(`Total amount value should be non-negative`);
    }
};
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