In your package.json file add this to dependencies “hammerjs”: “^2.0.8”, Or if you want an alternative automatic way just you can type npm i hammerjs –save (or npm i [email protected] –save if you want, since 2.0.8 is the latest version nowdays) in your root project folder and test then, if the problem still occurring try … Read more
For those receiving this warning for the first time, it is due to a bleeding edge feature called Passive Event Listeners that has been implemented in browsers fairly recently (summer 2016). From https://github.com/WICG/EventListenerOptions/blob/gh-pages/explainer.md: Passive event listeners are a new feature in the DOM spec that enable developers to opt-in to better scroll performance by eliminating … Read more