define(["require", "exports"], function (require, exports) {
    "use strict";
    Object.defineProperty(exports, "__esModule", { value: true });
    function ieVat(value) {
        var v = value;
        if (/^IE[0-9][0-9A-Z*+][0-9]{5}[A-Z]{1,2}$/.test(v)) {
            v = v.substr(2);
        }
        if (!/^[0-9][0-9A-Z*+][0-9]{5}[A-Z]{1,2}$/.test(v)) {
            return {
                meta: {},
                valid: false,
            };
        }
        var getCheckDigit = function (inp) {
            var input = inp;
            while (input.length < 7) {
                input = "0" + input;
            }
            var alphabet = 'WABCDEFGHIJKLMNOPQRSTUV';
            var sum = 0;
            for (var i = 0; i < 7; i++) {
                sum += parseInt(input.charAt(i), 10) * (8 - i);
            }
            sum += 9 * alphabet.indexOf(input.substr(7));
            return alphabet[sum % 23];
        };
        if (/^[0-9]+$/.test(v.substr(0, 7))) {
            return {
                meta: {},
                valid: v.charAt(7) === getCheckDigit("" + v.substr(0, 7) + v.substr(8)),
            };
        }
        else if ('ABCDEFGHIJKLMNOPQRSTUVWXYZ+*'.indexOf(v.charAt(1)) !== -1) {
            return {
                meta: {},
                valid: v.charAt(7) === getCheckDigit("" + v.substr(2, 5) + v.substr(0, 1)),
            };
        }
        return {
            meta: {},
            valid: true,
        };
    }
    exports.default = ieVat;
});