Solution: Compose Nested Adapters

Explore composing nested adapters to bridge incompatible interfaces from multiple analytics providers. Learn to normalize varying response formats and error behaviors into a consistent pattern, ensuring reliable and maintainable Node.js backend code. Understand how ResponseAdapter and ErrorAdapter work together to provide uniform success and error handling without modifying original providers.

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Solution explanation
Revisit the problem statement

Solution explanation

Lines 2–14: We simulate two analytics providers:
- providerA throws an error for invalid input and returns { ok, payload } on success.
- providerB returns success or failure objects instead of throwing.
- These two incompatible interfaces form the motivation for adapter composition.
Lines 17–36: The ResponseAdapter converts both providers’ response formats to a unified shape.
- If the response has ok, it maps { ok, payload } → { success, result }.
- If the response has success, it maps { success, data } → { success, result }.
- If the response indicates failure (success: ...

1.Introduction to Node.js Patterns

2.Factory Pattern: Generate Config-Driven Services Dynamically

3.Builder Pattern: Assemble Complex Objects with Fluent APIs

4.Decorator Pattern: Extend Behavior Without Modifying Core Logic

5.Adapter Pattern: Standardize Interface Across Dependencies

6.Proxy Pattern: Intercept and Control Access Transparently

7.Strategy Pattern: Swap Algorithms Based on Context

8.Wrapping Up

Solution: Compose Nested Adapters

Solution explanation