page Middleware { seo { title = "Middleware" description = "Order and short-circuit request middleware." canonical = "https://wrnexusjs.dev/guides/middleware" } view {
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Preview guide · 0.8.7

Middleware

Middleware receives context and next. Return next() to continue or return a Response to stop. Put request limits and trust-boundary controls before business logic.

Configuration

Keep configuration in wrnexus.config.ts, select an explicit profile, and store secrets only in validated environment variables. Use wrnexus config . --explain to review the resolved non-secret configuration.

Implementation workflow

bunx wrnexus doctor .
bunx wrnexus typecheck .
bunx wrnexus inspect routes .
bunx wrnexus build .

Start from the exact installed package page, implement the smallest server-owned contract, and add browser behavior only where interaction requires it. Run the production build because development-only success does not prove deployability.

Verification checklist

  • Inputs are validated at the authoritative server boundary.
  • Authentication and resource authorization are tested independently.
  • Generated routes and application types are current.
  • Error, empty, loading, denied, and success states are documented.
  • The production artifact starts and serves the expected route.

Release scope

This guide describes installed 0.8.7 capabilities. Follow linked package declarations for exact signatures; undocumented behavior is not guaranteed.

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