Google Analytics GA4 Measurement Protocol Library

This library provides an interface for sending data to Google Analytics 4 properties using Measurement Protocol.

NOTE Google Analytics 4 is in Alpha as of the latest update

Use

BSD 3-Clause license can be found in ./LICENSE

Contact

[email protected]

Compatible with

• Node.js version 8+
• es2015

Installation

npm install -s ga4-mp

Setup

ga4mp = require('ga4-mp');
let ga4 = ga4mp.createClient(apiSecret, measurementId, clientId);

The required credentials for sending events to GA4 are made up by the following:

Credential	Description
measurement_id	The identifier for a Data Stream. Found in the Google Analytics UI under: Admin > Data Streams > choose your stream > Measurement ID
api_secret	Generated throught the Google Analytics UI. To create a new secret, navigate in the Google Analytics UI to: Admin > Data Streams > choose your stream > Measurement Protocol > Create
client_id	Get your Google API client ID

Send Hits to GA4 Account

You can send events to GA4 as they happen or batch them to be sent at another time of your choosing.

Send immediately

ga4.send(<events>);

Send later

ga4.send(<events>, true); // Set postpone flag
ga4.flushBuffer();  // Send all postponed events

Events passed to send()

var events = [
  {
    name : 'add_to_cart',
    params : {
      currency : 'USD',
       items : ['Pokémon cards'],
       value : "4.99"
    }
  },
  {
    name : 'app_update',
    params : {
      previous_app_version : '4.6'
    }
  }
]

Events are expected to be passed to the send() function within an array and matching the object schema found in the Google Analytics 4 documentation.

Additional Features

Set and unset a constant parameter

ga4.setConstantParam(key, value);  // Set a constant
ga4.unsetConstantParam(key); // Remove a constant

Set custom dimensions/metrics, country codes, etc. for all outgoing events. You can unset them too.

Output connection details

ga4.readClientInfo();