Adding Firebase service_key.json without committing the file to Git

Firebase service_key json file contains sensitive information so

mentioned in his video that you should never commit it to git.

Another way to add the service_key is with environment variables.

Copy all the contents in the file and paste it in https://www.textfixer.com/tools/remove-line-breaks.php for removing line breaks and copy the content without line breaks in environment variable.

FIREBASE_SERVICE_ACCOUNT_KEY='JSON file content without line breaks'

And in firebaseAdmin.ts file, change this

const serviceKey = require("./service_key.json");

into

const serviceKey = JSON.parse(

process.env.FIREBASE_SERVICE_ACCOUNT_KEY as string

);

And when adding the environment variable in vercel don't put single quote.

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