The path to a Google OAuth2 refresh token JSON file or an object representing a Google OAuth2 refresh token.
Optional httpAgent: AgentOptional HTTP Agent to be used when retrieving access tokens from Google token servers.
A credential authenticated via the provided service account that can be used to initialize an app.
// Providing a path to a refresh token JSON file
var refreshToken = require("path/to/refreshToken.json");
admin.initializeApp({
credential: admin.credential.refreshToken(refreshToken),
databaseURL: "https://<DATABASE_NAME>.firebaseio.com"
});
Returns a credential created from the provided refresh token that grants admin access to Firebase services. This credential can be used in the call to firebase-admin.app#initializeApp.
See Initialize the SDK for more details.