SIREN/SIREN to VAT number

This small library converts a French SIREN or SIRET to a valid VAT number. You can then use the vat number library to check it against the official European records.

How to use it

• Install the library first with yarn add @adriantombu/siret-to-vat
• And then import it in your script

const { convertToVatNumber } = require('@adriantombu/siret-to-vat')

const siren = 817871668
const vat = convertToVatNumber(siren)

{
  vatNumber: "FR16817871668",
  valid: true
}

In case of an invalid number, you will receive the following result, with the value valid set to false

const { convertToVatNumber } = require('@adriantombu/siret-to-vat')

const siren = 123456'
const vat = convertToVatNumber(siren)

{
  vatNumber: 123456',
  message: 'The number provided must be a SIREN (9 caracters) or SIREN (14 caracters)',
  valid: false
}

How to contribute

• Clone the repository git clone git@github.com:adriantombu/siret-to-vat.git
• Install the packages with yarn install
• Modify the src/index.ts file
• When everything's done, you can send a PR \o/