The effect-handlers/all.ts body: the seam between the generated shells and
the developer's handlers. DeclaredEffectName is the union of the declared
effect names, so a handler the definitions require and the registry cannot
reach is a compile error. effectNames must be non-empty.
The
effect-handlers/all.tsbody: the seam between the generated shells and the developer's handlers.DeclaredEffectNameis the union of the declared effect names, so a handler the definitions require and the registry cannot reach is a compile error.effectNamesmust be non-empty.