is-online
Check if the internet connection is up
@wessberg/connection-observer
An API that provides a way to asynchronously observe the connectedness of a target Node or querySelector inside a document
@esm2cjs/is-online
Check if the internet connection is up. This is a fork of sindresorhus/is-online, but with CommonJS support.
disconnected
Enables `connected` and `disconnected` element's listeners.