Back to the collection
PLAYBOOK / DEVELOPMENT
TypeScript Type Safety
Make types hold up where they matter most: at the boundaries.
PlaybookCREWKIT COLLECTION
TypeScript Type SafetyCrewKit
THE APPROACH
A clearer way forward.
Shared conventions for strict compiler settings, runtime validation, and explicit error handling. Advisory challenges make escape hatches a deliberate team decision.
- Validate external data at I/O boundaries.
- Prefer discriminated unions and unknown-then-narrow.
- Make compiler suppressions visible trade-offs.
AT A GLANCE
Inside the approach.
An overview of this resource, not the full instructions.
- 01
Enable strict compiler settings.
- 02
Validate incoming values against a schema.
- 03
Narrow unknown values before using them.
typescript-type-safety