E-SevaJS

Introduction

Utilities for validating various formats of Indian system codes like Mobile, PAN, AADHAAR, GST and more!

Installation

npm install --save esevajs

Usage

const { Validator } = require('esevajs');

OR

import { Validator } from 'esevajs';

Check-out all Validators documentation below

Mobile

A mobile is a 10 digit numerical code starting with either 6, 7, 8, 9.

let isValid = Validator.mobile('9876543210');
// isValid = true

isValid = Validator.mobile('5678943210');
// isValid = false

PIN (Postal Index Number)

A pincode is a 6 digit numeric code used by Indian Post.

Format

• The first character is a number from 1 to 9.
• The second to sixth characters are numberical sequence from 00000 to 99999.

let isValid = Validator.pincode('400001');
// isValid = true

isValid = Validator.pincode('0123456');
// isValid = false

PAN (Permanent Account Number)

A PAN is a 10 digit alphanumeric code issued by Income Tax Department of India.

Format

• The first three characters are alphabetic series running from AAA to ZZZ.
• The fourth character represents the status of the PAN holder.
  • P stands for Individual
  • C stands for Company
  • H stands for Hindu Undivided Family (HUF)
  • A stands for Association of Persons (AOP)
  • B stands for Body of Individuals (BOI)
  • G stands for Government Agency
  • J stands for Artificial Juridical Person
  • L stands for Local Authority
  • F stands for Firm/ Limited Liability Partnership
  • T stands for Trust
• The fifth character represents the first character of the PAN holder's last name/surname in case of an individual. In case of non-individual PAN holders fifth character represents the first character of PAN holder's name.
• The sixth to ninth characters are sequential numbers running from 0001 to 9999.
• The tenth character is an alphabetic check digit.

Visit this to know more about PAN.

let isValid = Validator.pan('ALWPG5809L');
// isValid = true

isValid = Validator.pan('ABAB12345Y');
// isValid = false

TAN (Tax Deduction and Collection Account Number)

A TAN is a 10 digit alphanumeric code.

Format

• The first four characters are alphabetic series running from AAAA to ZZZZ.
• The fifth to ninth characters are sequential numbers running from 00001 to 99999.
• The tenth character is an alphabetic character.

let isValid = Validator.tan('RAJA99999B');
// isValid = true

isValid = Validator.tan('RAJA999991');
// isValid = false

UAN (Universal Account Number)

A UAN is a 12 digit numberic code that is issued to member of the Employees’ Provident Fund Organisation (EPFO).

let isValid = Validator.uan('987654321098');
// isValid = true

isValid = Validator.uan('A98765432109');
// isValid = false

IFSC (Indian Financial System Code)

A IFSC is a 11 digit alphanumberic code that is issued to member of the Employees’ Provident Fund Organisation (EPFO).

Format

• The first four characters are alphabets that denote the bank name.
• The fifth character is numerical zero (0).
• The sixth to eleventh characters are numerical code that denote the branch name.

let isValid = Validator.ifsc('SBIN0011569');
// isValid = true

isValid = Validator.ifsc('BK1D0006046');
// isValid = false

ESIC (Employee State Insurance Corporation) Code

A ESIC code is a 17 digit numerical code that is issued by Employee State Insurance Corporation.

let isValid = Validator.esic('12345678901234567');
// isValid = true

isValid = Validator.esic('1234567890123456');
// isValid = false

IMEI (International Mobile Equipment Identity)

A IMEI is a 15 digit numeric code to identify mobile phones, as well as some satellite phones. The last digit of IMEI is a Luhn check digit.

let isValid = Validator.imei('490154203237518');
// isValid = true

isValid = Validator.imei('490154203237519');
// isValid = false

AADHAAR

Aadhaar is a 12 digit numberic code that can be obtained by residents or passport holders of India, based on their biometric and demographic data.

Format

• The first character is a number between 2 and 9.
• The second to eleventh characters are random numbers.
• The twelfth character is a Verhoeff check digit.

let isValid = Validator.aadhaar('234567890124');
// isValid = true

isValid = Validator.aadhaar('187654321096');
// isValid = false

AADHAAR VID (Aadhaar Virtual ID)

Aadhaar VID is a 16 digit numberic code that can be used instead of Aadhaar number at the time of authentication to avoid sharing of Aadhaar number. The last digit is a Verhoeff check digit.

let isValid = Validator.aadhaarVID('9876543210987659');
// isValid = true

isValid = Validator.aadhaarVID('6234897234982734');
// isValid = false

GSTIN (Goods & Services Tax Identification Number)

A GISTIN is a 15 digit alphanumeric code assigned to a business or person registered under the GST Act.

Format

• The first two characters are numerical series from 01 to 37 denoting state code.
• The third to twelfth characters are PAN number of the GST registered entity.
• The thirteenth character is a alphabet assigned based on the number of registration within a state.
• The fourteenth character is Z by default.
• The fifteenth character is a check codeand can be an alphabet or a number.

let isValid = Validator.gst('22ALJPT5243L1ZS');
// isValid = true

isValid = Validator.gst('22ALJPT5243L1ZB');
// isValid = false

Vehicle Registration (Number Plate)

A vehicle number plate is an alphanumeric code assigned to a vehicle registered in India.

The current format of the registration index consists of 4 parts.

Format

• The first two characters are alphanumeric code of the State / Union Territory where the vehicle is registered.
• The third & fourth characters the sequential number of a district.
• The third part consists of one, two or three letters or no letters at all.
• The fourth part is a number from 1 to 9999, unique to each plate.

let isValid = Validator.vehicleRegistration('DL4CAF4943');
// isValid = true

isValid = Validator.vehicleRegistration('DL4CAF494G');
// isValid = false

VPA (Virtual Payment Address)

A VPA / UPI (Unified Payment Interface) ID is a unique id generated for use of UPI in India.

Format

• VPA consists of alphabets, numbers, hyphen (-), underscore (_) and dot (.) as part of identification.
• The identification part is followed by @ sign.
• The last part is the handle of the issuer bank or PSP (Payment Service Provider).
• The maximum length of VPA is 50 characters.

Options

| Option | Type | Default | Description | | ------------- | ------------- | ------------- | ------------- | | maxLength | number | 50 | Maximum length of the VPA address including @ sign & the handle. | | handles | boolean | string[] | false | Whether to do additional check of verifying the handle. When it is true the handle part is checked against default handles listed in vpa-handles.json. When it is string[] the handle part is checked against merged list of default handles listed in vpa-handles.json and the ones given as input. |

let isValid = Validator.vpa('amazing-uid@upi');
// isValid = true

isValid = Validator.vpa('with@at@upi');
// isValid = false