Chapter 2

Shared Types Everywhere

One source of truth for 4 surfaces.

~14 min total2 lessonsAssignment

By the end of this chapter you'll be able to

grit sync across surfaces
Type-safe API client
Shared Zod schemas

Lessons

Module: Types

grit sync — multi-surface

One Go model, three TS frontends.

7mmedium

Shared Zod schemas

Validate input on every surface.

7mmedium

Chapter assignment

Add a field and feel the wave

Add an `IsFeatured bool` field to the Product model in the Go API. Run `grit sync`. Confirm the TypeScript type and Zod schema both regenerate, and that web / admin / mobile / desktop all type-check against the new field without any per-surface edits.

See success criteria

Lesson 1 takes ~7 min.

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ch.1: The Foundation ch.3: Building a Feature Across All Three