Add UI Extensions StorageAPI

packages/ui-extensions/src/surfaces/point-of-sale/api.ts

@@ -100,3 +100,8 @@ export type {
 export type {CountryCode} from './api/types/country-code';
 
 export type {Session} from './api/types/session';
+
+export type {
+  StorageApi,
+  StorageApiContent,
+} from './api/storage-api/storage-api';

packages/ui-extensions/src/surfaces/point-of-sale/api/standard/standard-api.ts

@@ -4,6 +4,7 @@ import type {LocaleApi} from '../locale-api/locale-api';
 import type {SessionApi} from '../session-api/session-api';
 import type {ToastApi} from '../toast-api/toast-api';
 import type {ProductSearchApi} from '../product-search-api/product-search-api';
+import {StorageApi} from '../storage-api/storage-api';
 
 export type StandardApi<T> = {[key: string]: any} & {
   extensionPoint: T;
@@ -12,4 +13,5 @@ export type StandardApi<T> = {[key: string]: any} & {
   SessionApi &
   ProductSearchApi &
   DeviceApi &
+  StorageApi &
   ConnectivityApi;

packages/ui-extensions/src/surfaces/point-of-sale/api/storage-api/storage-api.ts

@@ -0,0 +1,23 @@
+export interface StorageApi {
+  storage: StorageApiContent;
+}
+
+export interface StorageApiContent {
+  /**
+   * Get the value of a key from the storage
+   * @throws Error if the storage operation fails
+   * @param key
+   * @returns the value of the key or undefined if the key does not exist
+   */
+  get(key: string): Promise<string | undefined>;
+
+  /**
+   * Set the value of a key in the storage
+   * Value must be encoded as a string
+   * @throws StorageApiError if the data size limit is exceeded
+   * @throws Error if the storage operation fails
+   * @param key
+   * @param value
+   */
+  set(key: string, value: string): Promise<void>;
+}