A deep copy of an object is a copy whose properties do not share the same references (point to the same underlying values) as those of the source object from which the copy was made. As a result, when you change either the source or the copy, you can be assured you're not causing the other object to change too. That behavior contrasts with the behavior of a shallow copy, in which changes to nested properties in the source or the copy may cause the other object to change too.| developer.mozilla.org
The Map object holds key-value pairs and remembers the original insertion order of the keys. Any value (both objects and primitive values) may be used as either a key or a value.| developer.mozilla.org
Discussing JavaScript's controversial primitive, its usefulness and whether its poorly designed.| WaspDev Blog
[Response] class represents responses which are received by page.| playwright.dev
Whenever the page sends a request for a network resource the following sequence of events are emitted by [Page]:| playwright.dev
Whenever a network route is set up with page.route() or browserContext.route(), the Route object allows to handle the route.| playwright.dev