The [PageAssertions] class provides assertion methods that can be used to make assertions about the [Page] state in the tests.| playwright.dev
Programming languages all have built-in data structures, but these often differ from one language to another. This article attempts to list the built-in data structures available in JavaScript and what properties they have. These can be used to build other data structures.| MDN Web Docs
Buffers and character encodings#| nodejs.org