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Type-safe error handling in TypeScript is implemented by treating errors as values. Functions return Error or Value unions, forcing explicit handling and replacing unpredictable runtime exceptions with compile-time type safety.

Go-style error handling in JavaScript and TypeScript treats errors as return values rather than throwing exceptions. This pattern uses early returns and linear control flow to eliminate nested try-catch blocks and improve code maintainability.

Custom tagged errors with interpolation are created using a dedicated TypeScript library. This allows developers to define specific error types, attach contextual data dynamically, and match errors programmatically for targeted handling.

Errors as values should be used instead of try-catch blocks to leverage TypeScript's type safety. This approach enforces explicit error handling at compile time, preventing unhandled runtime exceptions and simplifying control flow.

Existing TypeScript codebases can be refactored to use typed errors without introducing new runtime dependencies. The library provides utilities for error transformation and extraction to improve reliability natively.

The errors as values approach might not suit projects heavily reliant on third-party libraries that throw exceptions. Integrating this pattern requires wrapping external calls, which can add boilerplate compared to traditional try-catch blocks.