1 files changed, 51 insertions, 0 deletions
diff --git a/flow-libs/notification.js.flow b/flow-libs/notification.js.flow
new file mode 100644
index 0000000000..bf5dda3af2
--- /dev/null
+++ b/flow-libs/notification.js.flow
@@ -0,0 +1,51 @@
+/* Notification */
+type NotificationPermission = 'default' | 'denied' | 'granted';
+type NotificationDirection = 'auto' | 'ltr' | 'rtl';
+type VibratePattern = number | Array<number>;
+type NotificationAction = { action: string, title: string, icon?: string };
+type NotificationOptions = {
+  dir: NotificationDirection,
+  lang: string,
+  body: string,
+  tag: string,
+  image: string,
+  icon: string,
+  badge: string,
+  sound: string,
+  vibrate: VibratePattern,
+  timestamp: number,
+  renotify: boolean,
+  silent: boolean,
+  requireInteraction: boolean,
+  data: ?any,
+  actions: Array<NotificationAction>,
+};
+
+declare class Notification extends EventTarget {
+  constructor(title: string, options?: $Shape<NotificationOptions>): void;
+  static permission: NotificationPermission;
+  static requestPermission(
+    callback?: (perm: NotificationPermission) => mixed,
+  ): Promise<NotificationPermission>;
+  static maxActions: number;
+  onclick: (evt: Event) => any;
+  onerror: (evt: Event) => any;
+  title: string;
+  dir: NotificationDirection;
+  lang: string;
+  body: string;
+  tag: string;
+  image: string;
+  icon: string;
+  badge: string;
+  sound: string;
+  vibrate: Array<number>;
+  timestamp: number;
+  renotify: boolean;
+  silent: boolean;
+  requireInteraction: boolean;
+  data: any;
+  actions: Array<NotificationAction>;
+
+  close(): void;
+}