ssrService

function ssrService(
  machine: any,
  userProps: () => Record<string, any>,
): MarkoService;

Builds a never-started MarkoService purely for
computing a machine’s initial DOM attributes during server rendering.

Zag’s connect() is a pure read over a service, so connecting a
never-started service yields correct initial attributes — role, aria-*,
data-state, ids — without touching the DOM. No entry actions or effects
ever run, so nothing needs cleanup: the instance is created inline in the
render expression and garbage-collected.

Parameters

Returns

A never-started MarkoService, safe to pass to a machine module’s
connect() during SSR.

Example

This is exactly what the <zag-machine> tag’s getter does
internally — picking the real service when there is one, and a throwaway
otherwise:

() => instance ?? ssrService(machine(), props)

Remarks

Marko serializes reactive state at the SSR boundary and never re-runs
render on resume — so this service must not be stored in reactive
state. Use it inline; the client builds its own real service via
createService on mount. See
SSR & Hydration.