card-validator/dist/cvv.js

A library for validating credit card fields

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.cvv = void 0;
var DEFAULT_LENGTH = 3;
function includes(array, thing) {
    for (var i = 0; i < array.length; i++) {
        if (thing === array[i]) {
            return true;
        }
    }
    return false;
}
function max(array) {
    var maximum = DEFAULT_LENGTH;
    var i = 0;
    for (; i < array.length; i++) {
        maximum = array[i] > maximum ? array[i] : maximum;
    }
    return maximum;
}
function verification(isValid, isPotentiallyValid) {
    return { isValid: isValid, isPotentiallyValid: isPotentiallyValid };
}
function cvv(value, maxLength) {
    if (maxLength === void 0) { maxLength = DEFAULT_LENGTH; }
    maxLength = maxLength instanceof Array ? maxLength : [maxLength];
    if (typeof value !== "string") {
        return verification(false, false);
    }
    if (!/^\d*$/.test(value)) {
        return verification(false, false);
    }
    if (includes(maxLength, value.length)) {
        return verification(true, true);
    }
    if (value.length < Math.min.apply(null, maxLength)) {
        return verification(false, true);
    }
    if (value.length > max(maxLength)) {
        return verification(false, false);
    }
    return verification(true, true);
}
exports.cvv = cvv;