invariant-hunter-ts

The best way to reduce TypeScript type assertions is to enforce validation at construction boundaries and replace defensive optional chaining with explicit undefined handling. This ensures the type system enforces guarantees instead of masking missing data with runtime checks.

Defensive optional chaining masks missing TypeScript guarantees by silently returning undefined instead of enforcing required data structures. Replacing loose optional chaining with construction-bound validation and explicit undefined handling ensures strict invariants and surfaces missing data immediately.

Review discriminated unions for completeness by enforcing exhaustiveness checks and tightening construction boundaries. This prevents union drift and ensures that runtime guards are replaced by strict type system enforcement across optional fields and widespread type assertions.

Yes, construction-bound validation is required to establish a TypeScript type-safety baseline. Validating data at construction boundaries allows you to eliminate defensive runtime checks, reduce loose optionality, and enforce strict invariants throughout the codebase.

You should not use optional chaining and nullish coalescing when masking missing guarantees during refactors or establishing a type-safety baseline. Disciplined use prevents these operators from hiding leaky discriminated unions and loose optionality that the type system should enforce.