v0 and FreshBooks integration: Step-by-Step Guide 2025

 

Setting Up Dependencies

 

• Open your project's package.json file.
• Add the following dependency to use the fetch API in Node. (Since your v0 project doesn’t have a terminal to run installation commands, you must manually add this to your code.)
• Include the following in your dependencies section:

{
  "dependencies": {
    "node-fetch": "^2.6.7"
  }
}
  

• This inclusion will ensure that when your project is built, the node-fetch library is used for making HTTP requests.

 

Creating the FreshBooks Integration File

 

• Create a new file in your project directory. Name this file freshbooks.ts. (Place it in a location such as the root directory or a lib folder based on your project structure.)
• Paste the following TypeScript code into freshbooks.ts. This code sets up a basic integration with the FreshBooks API by defining configuration values and a helper function to get invoices:

import fetch from 'node-fetch';

interface FreshBooksConfig {
  accessToken: string;
  accountId: string;
}
const config: FreshBooksConfig = {
  accessToken: 'YOURACCESSTOKEN_HERE', // Replace with your actual FreshBooks access token
  accountId: 'YOURACCOUNTID_HERE'      // Replace with your FreshBooks account ID
};
export async function getInvoices(): Promise {
  const url = https://api.freshbooks.com/accounting/account/${config.accountId}/invoices/invoices;
  const response = await fetch(url, {
    method: 'GET',
    headers: {
      'Authorization': Bearer ${config.accessToken},
      'Content-Type': 'application/json'
    }
  });
  if (!response.ok) {
    const errorBody = await response.text();
    throw new Error(Failed to fetch invoices: ${response.status} ${response.statusText} - ${errorBody});
  }
  return response.json();
}
  



• This file defines an interface for configuration, sets up the configuration object (remember to replace the placeholders with your actual FreshBooks credentials), and provides a function getInvoices() which makes an HTTP GET request to the FreshBooks Invoices API endpoint.

 

Integrating FreshBooks API Calls in Your Project

 

• Decide where in your project you wish to use the FreshBooks integration. For example, if you have an existing file like index.ts (or main.ts), open that file.
• Import the getInvoices function from the freshbooks.ts file. Add the following import statement at the top of your file:

import { getInvoices } from './freshbooks';
  

• Insert the following code snippet wherever you wish to call the FreshBooks API (for example, inside a function or as part of your app’s initialization):

async function displayInvoices() {
  try {
    const invoices = await getInvoices();
    console.log('FreshBooks Invoices:', invoices);
  } catch (error) {
    console.error('Error fetching invoices:', error);
  }
}

// Call the function to display invoices
displayInvoices();
  



• This code calls the getInvoices function, awaits its results, and logs the invoices to the console. You can modify this snippet to integrate the invoice data into your application’s UI or further processing flows.

 

Finalizing Your Integration

 

• Replace 'YOURACCESSTOKENHERE' and 'YOURACCOUNTIDHERE' in the freshbooks.ts file with your actual FreshBooks credentials.
• Save all files. When your project is built and deployed, the FreshBooks API integration will use the updated configuration and fetch live data from your FreshBooks account.
• Check your project’s logs or console output to verify that the invoices are fetched correctly and to troubleshoot any potential errors.