Focused crawls are collections of frequently-updated webcrawl data from narrow (as opposed to broad or wide) web crawls, often focused on a single domain or subdomain.
Trapper enables you to log your website information in a much better way than console.log, this not only logs detailed information about the log but also show you the state at which the particular event was triggered , in this way you can get the exact state at which your application is causing trouble , once you install it ,go to your developer tools and will be able to find trapper tabs, all the event logs will be published to that tab