stdnum
Version:
Standard Number Validation
144 lines • 10.1 kB
JavaScript
;
var __createBinding = (this && this.__createBinding) || (Object.create ? (function(o, m, k, k2) {
if (k2 === undefined) k2 = k;
var desc = Object.getOwnPropertyDescriptor(m, k);
if (!desc || ("get" in desc ? !m.__esModule : desc.writable || desc.configurable)) {
desc = { enumerable: true, get: function() { return m[k]; } };
}
Object.defineProperty(o, k2, desc);
}) : (function(o, m, k, k2) {
if (k2 === undefined) k2 = k;
o[k2] = m[k];
}));
var __setModuleDefault = (this && this.__setModuleDefault) || (Object.create ? (function(o, v) {
Object.defineProperty(o, "default", { enumerable: true, value: v });
}) : function(o, v) {
o["default"] = v;
});
var __importStar = (this && this.__importStar) || (function () {
var ownKeys = function(o) {
ownKeys = Object.getOwnPropertyNames || function (o) {
var ar = [];
for (var k in o) if (Object.prototype.hasOwnProperty.call(o, k)) ar[ar.length] = k;
return ar;
};
return ownKeys(o);
};
return function (mod) {
if (mod && mod.__esModule) return mod;
var result = {};
if (mod != null) for (var k = ownKeys(mod), i = 0; i < k.length; i++) if (k[i] !== "default") __createBinding(result, mod, k[i]);
__setModuleDefault(result, mod);
return result;
};
})();
Object.defineProperty(exports, "__esModule", { value: true });
exports.compact = exports.format = exports.validate = exports.abbreviation = exports.localName = exports.name = void 0;
const exceptions = __importStar(require("../exceptions"));
const util_1 = require("../util");
const pan_1 = require("./pan");
function clean(input) {
return util_1.strings.cleanUnicode(input, ' -');
}
const validRe = /^[0-9]{2}[A-Z]{5}[0-9]{4}[A-Z][0-9A-Z]{3}$/;
const ALPHABET = '0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ';
const STATE_CODES = {
'01': 'Jammu and Kashmir',
'02': 'Himachal Pradesh',
'03': 'Punjab',
'04': 'Chandigarh',
'05': 'Uttarakhand',
'06': 'Haryana',
'07': 'Delhi',
'08': 'Rajasthan',
'09': 'Uttar Pradesh',
'10': 'Bihar',
'11': 'Sikkim',
'12': 'Arunachal Pradesh',
'13': 'Nagaland',
'14': 'Manipur',
'15': 'Mizoram',
'16': 'Tripura',
'17': 'Meghalaya',
'18': 'Assam',
'19': 'West Bengal',
'20': 'Jharkhand',
'21': 'Orissa',
'22': 'Chattisgarh',
'23': 'Madhya Pradesh',
'24': 'Gujarat',
'25': 'Daman and Diu',
'26': 'Dadar and Nagar Haveli',
'27': 'Maharashtra',
'28': 'Andhra Pradesh',
'29': 'Karnataka',
'30': 'Goa',
'31': 'Lakshadweep',
'32': 'Kerala',
'33': 'Tamil Nadu',
'34': 'Puducherry',
'35': 'Anadaman and Nicobar Islands',
'36': 'Telangana',
'37': 'Andhra Pradesh (New)',
};
const VALID_STATE_CODES = Object.keys(STATE_CODES);
const impl = {
name: 'Indian VAT Number',
localName: 'Goods and Services Tax Identification Number',
abbreviation: 'GSTIN',
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 !== 15) {
return { isValid: false, error: new exceptions.InvalidLength() };
}
if (!validRe.test(value)) {
return { isValid: false, error: new exceptions.InvalidFormat() };
}
const [state, panValue] = util_1.strings.splitAt(value, 2, 12);
if (!VALID_STATE_CODES.includes(state)) {
return { isValid: false, error: new exceptions.InvalidComponent() };
}
if (value[12] === '0' || value[13] !== 'Z') {
return { isValid: false, error: new exceptions.InvalidComponent() };
}
if (!(0, pan_1.validate)(panValue).isValid) {
return { isValid: false, error: new exceptions.InvalidComponent() };
}
const [first, check] = util_1.strings.splitAt(value, -1);
const sum = first
.split('')
.map((char, index) => {
const product = ALPHABET.indexOf(char) * (index % 2 !== 0 ? 2 : 1);
return (Math.floor(product / ALPHABET.length) + (product % ALPHABET.length));
})
.reduce((prev, current) => {
return prev + current;
});
const checksum = (ALPHABET.length - (sum % ALPHABET.length)) % ALPHABET.length;
if (ALPHABET[checksum] !== check) {
return { isValid: false, error: new exceptions.InvalidChecksum() };
}
return {
isValid: true,
compact: value,
isIndividual: false,
isCompany: true,
};
},
};
exports.name = impl.name, exports.localName = impl.localName, exports.abbreviation = impl.abbreviation, exports.validate = impl.validate, exports.format = impl.format, exports.compact = impl.compact;
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