hono-pipeline

Structure a Hono backend using typed-RPC by following a layered pipeline: contracts → error union → service → unwrap → router/handler. This enforces typed-RPC compliance, domain logic purity, and explicit context management.

Keep domain logic pure in a Hono monorepo by isolating domain libraries without direct hono, RPC, or HTTP imports. The pipeline discipline ensures services remain decoupled from framework-specific context.

Manage authentication context in Hono service calls by explicitly passing context and auth data through the pipeline stages rather than relying on global state or hidden framework injections.

This typed-RPC pipeline approach works for existing Hono projects by refactoring endpoints into the layered discipline: contract, error union, service, unwrap, and router/handler stages.

An error union stage in Hono backend development aggregates potential service errors into a single typed union, ensuring the unwrap stage handles all domain failures explicitly before reaching the router.

A layered pipeline for Hono services introduces strict architectural overhead, requiring contracts and error unions for every endpoint, which may slow down rapid prototyping or simple route additions.