Investigating High Energy Usage on Vue.js Websites: Identifying the Root Causes

My Vue.js application has grown to be quite large with over 80 .vue components. Users have been complaining about their phone batteries draining quickly and Safari displaying a "This webpage is using significant energy..." warning.

I have tried investigating the issue by using the performance tab in Chrome and Lighthouse, but I haven't been able to pinpoint the problem.

There are a few areas that I suspect may be contributing to the battery drain:

  • I rely heavily on watchers in Vuex to monitor state changes, as passing information between components would be too labor-intensive. This has resulted in a large store.js file with numerous variables used throughout the application.

  • I use computed properties frequently

  • I have multiple event listeners for events like window resizing

javascriptvue.jsenergy

Answer №1

My extensive use of watchers in my vuex states has resulted in a bloated store.js file with numerous variables that are utilized throughout my application.

Is it really necessary to utilize observers for vuex states? The information stored in vuex stores is already reactive in relation to components, making observers potentially redundant.

I heavily rely on computed properties as well.

While useful, computed properties can put strain on the system and should be used judiciously only when absolutely essential.

I also implement event listeners for tasks like window resizing.

Remember to remove event listeners once the component is no longer in use.

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