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Documentation / @zerotal/flow / index / renderless

Function: renderless()

renderless(_fn, context): void

Defined in: flow/src/decorators.ts:666

Marks an action method as renderless — the action runs on the server but the follow-up re-render is skipped.

Parameters

_fn

unknown

context

ClassMethodDecoratorContext

Returns

void

Remarks

Unlike @task, @renderless does NOT imply @expose — it only registers the method as renderless, so it must be combined with @expose (or another decorator that exposes it) to be callable from the client. Use it for side-effect-only actions whose result the UI does not need to reflect (logging, fire-and-forget writes), avoiding the cost of a re-render and patch. Applies to a method only.

Example

class Analytics extends Component {
  @expose @renderless track(event: string) {
    this.logger.record(event); // no DOM update needed
  }
}