I’m working on automating the generation and download of loan agreements as PDF documents. The data for these agreements comes from two parties, “borrower” and “lender,” stored in a Firebase Realtime Database. My Firebase integration is working smoothly, fetching and displaying the stored data as intended. However, I’m facing some challenges in utilizing this data to create a PDF document using Node.js and pdfkit.

Here’s the setup: I have two JavaScript files to manage different aspects of the process. One handles the logic for fetching the data and other related operations, while the other is responsible for creating the PDF file using the fetched data.

However, I’ve encountered an issue where the terminal throws an error, stating that “Export ‘firebase’ is not defined in module,” even though Firebase is defined and imported correctly in the root file.

Here’s the relevant part of my code:

// myapprovedloan-details.js

// Function to fetch loan data for a specific user and loan
export function fetchLoanData(userID, loanID) {
    // Ensure that both userID and loanID are valid strings
    if (!userID || !loanID) {
        console.error('Invalid userID or loanID.');
        return;
    }

    // Construct the database reference path dynamically
    const loanDataRef = firebase.database().ref(`myApprovedLoans/${userID}/${loanID}/loanData`);

    // Fetch loan data from the database
    loanDataRef.once('value', (snapshot) => {
        const loanData = snapshot.val();
        if (loanData) {
            // Process loan data as needed
            console.log('Loan data:', loanData);
            // Call functions to update UI with loan data
            // Display loan information
            // Update other UI elements with loan data
        } else {
            console.error('No loan data found for loan ID:', loanID);
            // Handle the case where no loan data is found
        }
    });
// Export Firebase
export { firebase };
}

i’m fetching the lender’s data from the logged-in user.

    // Get the currently logged-in user
    const user = firebase.auth().currentUser;
    if (user) {
        const lenderID = user.uid; // Assuming user IDs are stored as UIDs in Firebase Authentication
        const userDataRef = firebase.database().ref(`myApprovedLoans/${userID}`);
        userDataRef.once('value', (snapshot) => {
            const userData = snapshot.val();
            if (userData) {
                // Start the lending flow
                showModal('startModal'); // Show the start modal
                // Pass the lenderID to moveLoanToMyApprovedLoans
                moveLoanToMyApprovedLoans(userData, lenderID);
            }
        });
    } else {
        console.log('No user logged in.');
    }
}

and the second code

// test.js

import pdfkit from 'pdfkit'; // Import the entire module
import fs from 'fs';
import { fetchLoanData } from './myapprovedloan-details.js';

// Generate a PDF document from the fetched loan data
const generatePDF = (loanData) => {
    // Create a new PDF document
    const doc = new pdfkit();

    // Pipe the PDF document to a file
    doc.pipe(fs.createWriteStream('loan-data.pdf'));

    // Draw the data on the PDF document
    doc.fontSize(25).text(loanData.name, 100, 100);

    // End the PDF document
    doc.end();
};

// Call fetchData function from myapprovedloan-details.js to start fetching loan data
fetchLoanData()
    .then((loanData) => {
        if (loanData) {
            generatePDF(loanData);
        }
    })
    .catch((error) => {
        // Handle the error
        console.error('Error fetching loan data:', error);
    });