init crater

resources/assets/js/components/base/base-table/expiring-storage.js

@@ -0,0 +1,34 @@
+class ExpiringStorage {
+  get (key) {
+    const cached = JSON.parse(
+      localStorage.getItem(key)
+    )
+
+    if (!cached) {
+      return null
+    }
+
+    const expires = new Date(cached.expires)
+
+    if (expires < new Date()) {
+      localStorage.removeItem(key)
+      return null
+    }
+
+    return cached.value
+  }
+
+  has (key) {
+    return this.get(key) !== null
+  }
+
+  set (key, value, lifeTimeInMinutes) {
+    const currentTime = new Date().getTime()
+
+    const expires = new Date(currentTime + lifeTimeInMinutes * 60000)
+
+    localStorage.setItem(key, JSON.stringify({ value, expires }))
+  }
+}
+
+export default new ExpiringStorage()