This module is for who want to import a large json file to Firebase in Node.js.
import fs from 'fs';
import importData from 'firebase-stream-import';
fs.createReadStream('./database.json')
.pipe(importData({
projectId: '...', // required
// one of these options is required
accessToken: '...', // you can generate an access token by using `firebase-admin`
secret: '...', // you can find secret in Firebase console
}));