Generating the Service Account Credentials js code to communicate through the SDK to the Firebase messaging service and is generated from within the Firebase console . Click on the Generate New Private Key button, download the generated file and place it in a suitable directory on the system on which Node.
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Send messages to any device Firebase Cloud Messaging (FCM) provides a reliable and battery-efficient connection between your server and devices that allows you to deliver and receive messages and notifications on iOS, Android, and the web at no cost .
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