Production startup

Run ersc build, then ersc start. A custom Bun entry can await start({ root, hostname, port }) from effective-rsc/server. All options are required; root is the application directory. Deploy its .ersc/, public/, and runtime dependencies.

The Promise resolves when ready; startup failures reject and exit. ERSC owns signal handling and cleanup, so do not wrap it in BunRuntime.runMain.

Deployment adapters

ersc build --adapter <package> runs an installed adapter after compilation; it does not upload. Without the flag, packaging is skipped and previous output remains.

Adapters export build: BuildHook from ./build, with types from effective-rsc/build. The hook receives absolute root, serverDir, clientDir, and publicDir paths and returns Effect<void, Error, Scope>. Inputs are read-only; adapters provide dependencies and ERSC owns cleanup/cancellation. Failures stop the build.