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readme.md

🙈 with-page-visibility-props

npm ci coverage deps

Part of a collection of Higher-Order Components for React, especially useful with Recompose.

Dynamically map page visibility status to props using Page Visibility API (Can I use?).

A few examples:

  • A site has an image carousel that shouldn't advance to the next slide unless the user is viewing the page.
  • An application showing a dashboard of information doesn't want to poll the server for updates when the page isn't visible.
  • A page wants to detect when it is being prerendered so it can keep accurate count of page views.
  • A site wants to switch off sounds when a device is in standby mode (user pushes power button to turn screen off)

Install

yarn add @hocs/with-page-visibility-props

Usage

withPageVisibilityProps(
  mapStatusToProps: (visibilityStatus: Object) => Object,
): HigherOrderComponent

Where visibilityStatus is an { isVivisble, isHidden, isPrerendered, isUnloaded } object, check out visibilityState documentation for details.

import React from 'react';
import { compose } from 'recompose';
import withPageVisibilityProps from '@hocs/with-page-visibility-props';
import withLog from '@hocs/with-log';

const Demo = () => (
  <h1>Switch to another tab, go back here and check console logs.</h1>
);

export default compose(
  withPageVisibilityProps(
    ({
      isVisible,
      isHidden,
      isPrerendered,
      isUnloaded
    }) => ({
      isVisible,
      isHidden,
      isPrerendered,
      isUnloaded
    })
  ),
  withLog()
)(Demo);

📺 Check out live demo.

Notes

  • Target Component will be just passed through on unsupported platforms (i.e. global.document.visibilityState is undefined) like IE9, JSDOM (so Jest as well) or with Server-Side Rendering. This means that there will be no visibiulity status (i.e. undefined) which might be expected, but you can take care of it using Recompose defaultProps HOC if it's really necessary.