Drizzle ORM Guidelines

Reference Repositories

• Drizzle ORM — TypeScript ORM with SQL-like query builder
• Turso — Edge-hosted LibSQL database (Epicenter's database)

When to Apply This Skill

Use this pattern when you need to:

• Define Drizzle columns that use branded TypeScript string types.
• Choose between $type<T>() and customType for column definitions.
• Remove identity toDriver/fromDriver conversions that add runtime overhead.
• Keep data serialized through the storage layer and parse at UI edges.

Use $type() for Branded Strings, Not customType

When you need a column with a branded TypeScript type but no actual data transformation, use $type<T>() instead of customType.