stdnum/lib/cjs/tw/natid.js

Standard Number Validation

"use strict";
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Object.defineProperty(exports, "__esModule", { value: true });
exports.compact = exports.format = exports.validate = exports.abbreviation = exports.localName = exports.name = exports.ALPHABET = void 0;
const exceptions = __importStar(require("../exceptions"));
const util_1 = require("../util");
function clean(input) {
    return util_1.strings.cleanUnicode(input, ' -');
}
exports.ALPHABET = '0123456789ABCDEFGHJKLMNPQRSTUVXYWZIO';
const impl = {
    localName: '中華民國國民身分證',
    abbreviation: 'NATID',
    name: 'National ID Number',
    compact(input) {
        const [value, err] = clean(input);
        if (err) {
            throw err;
        }
        return value;
    },
    format(input) {
        const [value] = clean(input);
        return value;
    },
    validate(input) {
        const [value, error] = clean(input);
        if (error) {
            return { isValid: false, error };
        }
        if (value.length !== 10) {
            return { isValid: false, error: new exceptions.InvalidLength() };
        }
        const [issuer, gender, code, check] = util_1.strings.splitAt(value, 1, 2, 9);
        if (!util_1.strings.isalpha(issuer)) {
            return { isValid: false, error: new exceptions.InvalidComponent() };
        }
        if (!/[1-28-9]/.test(gender)) {
            return { isValid: false, error: new exceptions.InvalidComponent() };
        }
        if (!util_1.strings.isdigits(code)) {
            return { isValid: false, error: new exceptions.InvalidComponent() };
        }
        if (!util_1.strings.isdigits(check)) {
            return { isValid: false, error: new exceptions.InvalidComponent() };
        }
        const leading = exports.ALPHABET.indexOf(issuer) - 10;
        const sum = (0, util_1.weightedSum)(`${gender}${code}${check}`, {
            weights: [8, 7, 6, 5, 4, 3, 2, 1, 1],
            alphabet: exports.ALPHABET,
            modulus: 10,
        }) +
            Math.floor(leading / 10 + 1) +
            leading * 9;
        if (sum % 10 !== 0) {
            return { isValid: false, error: new exceptions.InvalidChecksum() };
        }
        return {
            isValid: true,
            compact: value,
            isIndividual: true,
            isCompany: false,
        };
    },
};
exports.name = impl.name, exports.localName = impl.localName, exports.abbreviation = impl.abbreviation, exports.validate = impl.validate, exports.format = impl.format, exports.compact = impl.compact;
exports.default = impl;
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