Function makeUpdateService

packages/effect/src/internal/differ/contextPatch.ts:113–121

(
  key: string,
  update: (service: T) => T
)

})

const makeUpdateService = <Env, I, T>(
  key: string,
  update: (service: T) => T
): Differ.Context.Patch<Env | I, Env | I> => {
  const o = Object.create(UpdateServiceProto)
  o.key = key
  o.update = update
  return o
}

type Instruction =
  | Empty<any, any>