Initial version

store.js

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+/**
+@license
+Copyright (c) 2022 trading_peter
+This program is available under Apache License Version 2.0
+*/
+
+import { DataStore } from './dataStore';
+
+/**
+ * # Store
+ *
+ * A simple key value store.
+ */
+export const Store = function(superClass) {
+  return class extends superClass {
+    _storeSubscribe(keys) {
+      if (Array.isArray(keys) === false) {
+        keys = [ keys ];
+      }
+
+      keys.forEach(key => {
+        let targetProperty;
+        if (typeof key === 'object') {
+          targetProperty = key.targetProperty;
+          key = key.key;
+        }
+        DataStore.addInstance(this, key, targetProperty);
+      });
+    }
+
+    _storeUpdated(key, newValue, targetProperty) {
+      this[targetProperty || key] = newValue;
+    }
+
+    _storeWrite(key, value) {
+      DataStore.writeKey(key, value);
+    }
+  };
+}