Scalable Student Performance Analytics Dashboard

Design a type-safe, performant analytics dashboard microservice using Nest.js that aggregates student performance metrics across multiple data sources. Implement generics to create a flexible data transformation pipeline that can handle different assessment types (standardized tests, assignments, project scores). The system must support real-time data streaming, have robust type definitions for student and assessment interfaces, and include advanced filtering capabilities using TypeScript's advanced type system. Include error handling for data inconsistencies and implement a strategy pattern for different data source adapters.