This is part of the Flatfile Coding Tutorial, specifically the "Adding Validation" step.

📖 Tutorial: 101.02 Adding Validation

1. Install dependencies:

   npm install

2. Set up environment variables:

   cp .env.example .env

   Edit .env with your Flatfile credentials.

3. Run the development server:

   npx flatfile develop

This example shows how to add validation to your Flatfile listener using JavaScript, building on the basic listener from the previous step.