electron flow type definitions

Summary: Adding a flowtype library definition for electron 3 and fixing related type errors

Reviewed By: passy

Differential Revision: D9124758

fbshipit-source-id: e09cb5b05ba952e7f95f68f9043edc586f81ae83

src/ui/components/Button.js

@@ -281,7 +281,8 @@ class Button extends styled.StylableComponent<
         position.x = parseInt(left, 10);
         position.y = parseInt(bottom + 6, 10);
       }
-      menu.popup(electron.remote.getCurrentWindow(), {
+      menu.popup({
+        window: electron.remote.getCurrentWindow(),
         async: true,
         ...position,
       });

src/ui/components/ContextMenuProvider.js

@@ -37,7 +37,7 @@ export default class ContextMenuProvider extends Component<{|
   onContextMenu = () => {
     const menu = electron.remote.Menu.buildFromTemplate(this._menuTemplate);
     this._menuTemplate = [];
-    menu.popup(electron.remote.getCurrentWindow(), {async: true});
+    menu.popup({window: electron.remote.getCurrentWindow(), async: true});
   };
 
   render() {

src/ui/components/searchable/FilterToken.js

@@ -161,7 +161,8 @@ export default class FilterToken extends PureComponent<Props> {
     }
     const menu = electron.remote.Menu.buildFromTemplate(menuTemplate);
     const {bottom, left} = this._ref ? this._ref.getBoundingClientRect() : {};
-    menu.popup(electron.remote.getCurrentWindow(), {
+    menu.popup({
+      window: electron.remote.getCurrentWindow(),
       async: true,
       x: parseInt(left, 10),
       y: parseInt(bottom, 10) + 8,