Function backend

packages/computer/src/observe-integration.test.ts:91–99

(id: string, sync?: SyncRPC)

}

function backend(id: string, sync?: SyncRPC): WorkspaceBackend {
  return {
    id,
    type: "fake",
    async connect(): Promise<BackendHandle> {
      return { rpc: composite(sync ?? fakeSync()), close: async () => {} };
    },
  };
}

function failingBackend(id: string, reason: string): WorkspaceBackend {
  return {