TypeScript: runtime contracts and generics

TypeScript · Intermediate

TypeScript: runtime contracts and generics

Validate real inputs and preserve types through reusable transformations.

Prerequisite: TypeScript after JavaScript · 50 minutes of guided study

2 published lessons, from first principles to a small project.

Open interactive course →

Bridge · From syntax to engineering

Return a typed validation result
Unknown data should become trusted data through an explicit check.
25 min →
Preserve types while batching work
A generic can preserve the item type across a transformation.
25 min →