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127 | 1×
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| const REGX = {
PAN: /^[A-Z]{5}\d{4}[A-Z]$/,
GSTIN_WO_CHK: /^\d{2}[A-Z]{5}\d{4}[A-Z][A-Z\d][Z]$/,
GSTIN: /^\d{2}[A-Z]{5}\d{4}[A-Z][A-Z\d][Z][A-Z\d]$/,
TAN: /^[A-Z]{4}\d{5}[A-Z]$/,
AADHAR: /^[2-9]\d{11}$/,
IMEI: /^\d{15}$/,
CARD: /^\d{14,16}$/,
IFSC: /^[A-Z]{4}[A-Z0-9]{7}$/,
ESIC: /^\d{17}$/,
UAN: /^\d{12}$/,
MOBILE: /^\d{10}$/,
PINCODE: /^\d{6}$/,
HSN: /^\d{2}(\d{2})?(\d{2})?(\d{2})?$/,
SAC: /^\d{8}$/,
};
const PAN_HOLDER = {
A: 'Association Of Persons (AOP)',
B: 'Body Of Individuals (BOI)',
C: 'Company',
F: 'Firm',
G: 'Government',
H: 'Hindu Undivided Family (HUF)',
L: 'Local Authority',
J: 'Artificial Juridical Person',
P: 'Individual (Proprietor)',
T: 'Trust (AOP)',
E: 'Limited Liability Partnership (LLP)',
};
const luhnCheck = value => value.split('').reverse().map((x, i) => (i % 2 ? +x * 2 : +x))
.map(x => (x > 9 ? (x % 10) + 1 : x))
.reduce((a, x) => a + x) % 10 === 0;
const getValidDigit = (gstino) => {
const gstNo = gstino.toUpperCase().substring(0, 14).split('');
const ref = '0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ';
const sum = gstNo.map((x, i) => ref.indexOf(x) * ((i % 2) + 1))
.map(x => Math.floor(x / 36) + (x % 36))
.reduce((a, c) => a + c, 0);
return ref.charAt(36 - (sum % 36));
};
const gstin = (gstNo) => {
if (gstNo.length === 15 && REGX.GSTIN.test(gstNo.toUpperCase())) {
return getValidDigit(gstNo) === gstNo.toUpperCase().substr(-1);
}
return false;
};
gstin.getValidDigit = getValidDigit;
const pan = (panNo) => {
if (panNo.length === 10 && REGX.PAN.test(panNo.toUpperCase())) {
const panTypes = ['A', 'B', 'C', 'F', 'G', 'H', 'L', 'J', 'P', 'T', 'E'];
return panTypes.includes(panNo[3].toUpperCase());
}
return false;
};
pan.holder = (panNo) => {
if (panNo.length !== 10 || !REGX.PAN.test(panNo.toUpperCase())) throw Error('Invalid PAN Format');
return PAN_HOLDER[panNo[3].toUpperCase()] || 'UNKNOWN';
};
const tan = (tanNo) => {
if (tanNo.length === 10 && REGX.TAN.test(tanNo.toUpperCase())) {
return 'ABCDEFG'[Number(tanNo.substring(4, 9)) % 7] === tanNo.toUpperCase().substr(-1);
}
return false;
};
const d = [
[0, 1, 2, 3, 4, 5, 6, 7, 8, 9],
[1, 2, 3, 4, 0, 6, 7, 8, 9, 5],
[2, 3, 4, 0, 1, 7, 8, 9, 5, 6],
[3, 4, 0, 1, 2, 8, 9, 5, 6, 7],
[4, 0, 1, 2, 3, 9, 5, 6, 7, 8],
[5, 9, 8, 7, 6, 0, 4, 3, 2, 1],
[6, 5, 9, 8, 7, 1, 0, 4, 3, 2],
[7, 6, 5, 9, 8, 2, 1, 0, 4, 3],
[8, 7, 6, 5, 9, 3, 2, 1, 0, 4],
[9, 8, 7, 6, 5, 4, 3, 2, 1, 0],
];
const p = [
[0, 1, 2, 3, 4, 5, 6, 7, 8, 9],
[1, 5, 7, 6, 2, 8, 3, 0, 9, 4],
[5, 8, 0, 3, 7, 9, 6, 1, 4, 2],
[8, 9, 1, 6, 0, 4, 3, 5, 2, 7],
[9, 4, 5, 3, 1, 2, 6, 8, 7, 0],
[4, 2, 8, 6, 5, 7, 3, 9, 0, 1],
[2, 7, 9, 3, 8, 0, 6, 4, 1, 5],
[7, 0, 4, 6, 9, 1, 3, 2, 5, 8],
];
const inv = [0, 4, 3, 2, 1, 5, 6, 7, 8, 9];
function invArray(arr) {
let array = arr;
Iif (Object.prototype.toString.call(array) === '[object Number]') array = String(array);
Eif (Object.prototype.toString.call(array) === '[object String]') array = array.split('').map(Number);
return array.reverse();
}
const generate = number => inv[invArray(number).reduce((a, c, i) => d[a][p[(i + 1) % 8][c]], 0)];
const aadhar = (number) => {
if (REGX.AADHAR.test(number.toString())) {
return !invArray(number).reduce((a, c, i) => d[a][p[i % 8][c]], 0);
}
return false;
};
aadhar.getValidDigit = generate;
const imei = (number) => {
const val = number.toString();
if (val.length === 15 && REGX.IMEI.test(val)) return luhnCheck(val);
return false;
};
const card = (number) => {
const val = number.toString();
if ([14, 15, 16].includes(val.length) && REGX.CARD.test(val)) return luhnCheck(val);
return false;
};
const ifsc = code => REGX.IFSC.test(code);
const esic = number => REGX.ESIC.test(number);
const uan = number => REGX.UAN.test(number);
const mobile = number => REGX.MOBILE.test(number);
const pinCode = number => REGX.PINCODE.test(number);
const hsn = (code, length) => {
let result = REGX.HSN.test(code);
Iif ([2, 4, 6, 8].includes(length)) result = result && (length === code.length);
return result;
};
const sac = code => REGX.SAC.test(code);
const isValid = {
gstin, pan, tan, aadhar, imei, card, ifsc, esic, uan, mobile, pinCode, hsn, sac,
};
module.exports = isValid;
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