Client exports

Import from @delmaredigital/payload-experiments/client. The module is marked 'use client'. Usage is described in Client counting.

Export	Signature	Purpose
`ExperimentsProvider`	`({ value: ClientAssignments, children })`	Provides assignments to hooks; records viewport exposures, pageviews and clicks
`useFlagPoint`	`useFlagPoint<P>(id) => { arm, params, source, experiment?, experimentId?, expose(renderedArm) }`	Read an allow-listed flag point
`useExperiment`	`useExperiment<P>(slug) => { arm, params, expose(renderedArm) }`	Read an allow-listed test
`ExperimentPageview`	`()`	Records the pageview for whole-page tests on the current page
`ExperimentGroup`	`({ expose?, children })`	Viewport exposure for a resolved Payload-blocks group
`trackConversionBeacon`	`(eventName, { idempotencyKey? }?) => void`	Client conversion for a client-writable event source
`MAX_EVENTS_PER_BODY`	`20`	Events per `POST /xp/events` body
`DEFAULT_MAX_BODY_BYTES`	`8192`	Default `events.maxBodyBytes`
`ClientAssignments`	type	The provider value

Behaviour notes

Hooks never record on read. expose sends only for tests that use the manual policy, and only when the person is counted.
An id or slug missing from the provider's allow-list throws in development and returns the Original (arm: 'control') with one console error in production.
Use one apiRoute for every provider on a page, including nested providers.
Viewport exposure watches a fixed, invisible 100 px marker at the top of the content and counts when at least half of it is visible, so short and tall content behave the same.
Click and exposure beacons use navigator.sendBeacon, with a keepalive fetch fallback.