Migrating from FingerprintJS v2 to Pro

How to update from Fingerprintjs Open-Source v2 to Fingerprint Pro:

1. Sign up on dashboard.fingerprint.com/signup, create an account, and get a public API key.

2. Change the @fingerprintjs/fingerprintjs or fingerprintjs2 package to @fingerprintjs/fingerprintjs-pro. If you use NPM, run:

   NPMYarn

   npm remove @fingerprintjs/fingerprintjs fingerprintjs2 @types/fingerprintjs__fingerprintjs @types/fingerprintjs2
   npm install @fingerprintjs/fingerprintjs-pro

   # Don't mind the "This module isn't specified in a package.json file" error
   yarn remove @fingerprintjs/fingerprintjs fingerprintjs2 @types/fingerprintjs__fingerprintjs @types/fingerprintjs2
   yarn add @fingerprintjs/fingerprintjs-pro

   And replace the package name in your JavaScript/TypeScript code:

   Diff

   - import Fingerprint2 from '@fingerprintjs/fingerprintjs'
   - import Fingerprint2 from 'fingerprintjs2'
   + import FingerprintJS from '@fingerprintjs/fingerprintjs-pro'

   If you use a CDN, switch to our CDN:

   Diff

   - <script src="https://cdn.jsdelivr.net/npm/fingerprintjs2@2/dist/fingerprint2.min.js"></script>
   + <script src="https://fpjscdn.net/v3/<<browserToken>>/iife.min.js"></script>
     <script>
       // ...
     </script>

3. Replace requestIdleCallback with FingerprintJS.load. The function will return a promise that resolves with an agent object. The agent has a get method that you will use instead of calling Fingerprint2.get directly:

   Diff

   - requestIdleCallback(() => {
   -   Fingerprint2.get(result => {
   + const fpPromise = FingerprintJS.load()
   + fpPromise
   +   .then(fp => fp.get()){
   +   .then(result => {
         // Handle the result
       })
   - })

4. Add the public API key to the FingerprintJS.load() configuration:

   NPM/YarnCDN

   - FingerprintJS.load()
   + FingerprintJS.load({ apiKey: '<<browserToken>>' })

   Put the key to the agent script URL:
   https://fpjscdn.net/v3/YOUR_PUBLIC_KEY
   
   For example:
   https://fpjscdn.net/v3/token
   https://fpjscdn.net/v3/token/iife.min.js

5. Use the visitor identifier directly (the raw components aren't provided):

   Diff

     fp.get().then(result => {
   -   const values = result.map(function (component) { return component.value })
   -   const visitorId = Fingerprint2.x64hash128(values.join(''), 31)
   +   const visitorId = result.visitorId
     })

6. Remember that the support of Internet Explorer 10 and older has been dropped. Some old browsers like Internet Explorer 11 and Android Browser 4.1 require a Promise polyfill. See the browser support guide to get a list of the supported browsers.