Dynamic Revenue Forecasting Model for SaaS Startup

Create a comprehensive Node.js revenue projection script that dynamically calculates multi-year financial forecasts for a technology startup. The script should include Monte Carlo simulation capabilities, factor in variable customer acquisition costs, churn rates, and potential pricing tier expansions. Implement probabilistic modeling using mathjs, integrate with Google Sheets via SheetJS, and generate interactive visualization components using D3.js. Include error handling for different scenario inputs and provide a modular architecture that allows easy configuration of financial parameters.