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 Working with Service Workers on Javascript. To ensure that only one Service Worker is installed and active per endpoint (or per scope), you need to be mindful of how Service Workers are scoped and how they manage their installation and activation process. Key Concepts: Service Worker Scope : A Service Worker controls a specific URL scope. The scope is determined by where the Service Worker script is located. By default, it controls the path where the script is located and its subpaths, but you can customize it when registering the Service Worker. Service Worker Installation and Activation : The Service Worker lifecycle involves the steps of installing, activating, and fetching. The Service Worker is installed once and only if there is no existing active Service Worker that matches the scope of the registration. Solution: Avoid Multiple Service Workers by Proper Registration You can ensure only one Service Worker is registered per endpoint (or scope) by controlling the reg...