Type inference and registries

FlowPanel's types connect resource references to row shapes and application services. Runtime introspection checks the same configuration against the live adapter metadata.

Drizzle infers from the table

resource(schema.users, …) carries the table type, so InferRow<typeof schema.users> resolves through $inferSelect. Columns, filters, form fields, renderers, and row actions autocomplete actual properties.

Prisma needs a string registry

resource("User", …) receives only a string at compile time. Augment FlowpanelResources to map that name to the generated Prisma type:

declare module "@flowpanel/kit" {
  interface FlowpanelResources {
    User: import("@prisma/client").User;
  }
}

The same registry supports string-named custom resources and cross-resource references. Keep keys aligned with the resource registry name used in config.

Type application services once

FlowpanelTypes supplies shared application types, most importantly the database client available as ctx.db:

declare module "@flowpanel/kit" {
  interface FlowpanelTypes {
    db: typeof db;
  }
}

InferDB and InferRow let application modules derive those types without copying them. Put augmentation in a server-owned module included by the application's TypeScript program.

Types and runtime checks complement each other

TypeScript catches known field typos while editing. Admin compilation compares configured names with adapter introspection, which also covers untyped JavaScript boundaries, stale generated clients, and custom adapters. Zod/resource schemas validate write values at runtime.

Types do not prove authorization, tenant isolation, database constraints, or serializability. Those remain runtime policies and tests.

See Type registry reference for exact utilities.