From 840cb98b8a122c3c1462103d6fda67c92efcd579 Mon Sep 17 00:00:00 2001
From: Akinsola Lawanson <106528085+akinsola-guardian@users.noreply.github.com>
Date: Thu, 9 Jan 2025 16:51:04 +0000
Subject: [PATCH] Create participants.ts

---
 .../lib/participants.ts                       | 23 +++++++++++++++++++
 1 file changed, 23 insertions(+)
 create mode 100644 libs/@guardian/libs/src/consent-management-platform/lib/participants.ts

diff --git a/libs/@guardian/libs/src/consent-management-platform/lib/participants.ts b/libs/@guardian/libs/src/consent-management-platform/lib/participants.ts
new file mode 100644
index 000000000..3bc097495
--- /dev/null
+++ b/libs/@guardian/libs/src/consent-management-platform/lib/participants.ts
@@ -0,0 +1,23 @@
+import { isObject } from '../../isObject/isObject';
+import { isString } from '../../isString/isString';
+import { storage } from '../../storage/storage';
+
+export type Participations = Record<string, { variant: string }>;
+
+const participationsKey = 'gu.ab.participations';
+export const getParticipationsFromLocalStorage = (): Participations => {
+	const participations = storage.local.get(participationsKey);
+	return isParticipations(participations) ? participations : {};
+};
+
+const isParticipations = (
+	participations: unknown,
+): participations is Participations => {
+	return (
+		isObject(participations) &&
+		Object.values(participations).every(
+			(participation) =>
+				isObject(participation) && isString(participation.variant),
+		)
+	);
+};