telemetry-first-touch-store.ts27 lines · main

1	/**
2	* In-memory store for first-touch attribution data (referrer, UTMs, page URL).
3	*
4	* Captured before consent so no device storage is needed. Data is read once
5	* by PageTelemetry after consent, then cleared. Lost on hard reload — accepted
6	* trade-off (GROWTH-656).
7	*/
8
9	import type { getSharedTelemetryData } from './telemetry-utils'
10
11	export type SharedTelemetryData = ReturnType<typeof getSharedTelemetryData>
12
13	let firstTouchData: SharedTelemetryData | null = null
14
15	/** Write-once — subsequent calls are no-ops. */
16	export function setFirstTouchData(data: SharedTelemetryData): void {
17	if (firstTouchData !== null) return
18	firstTouchData = data
19	}
20
21	export function getFirstTouchData(): SharedTelemetryData | null {
22	return firstTouchData
23	}
24
25	export function clearFirstTouchData(): void {
26	firstTouchData = null
27	}