What type of file is required to add a custom map layer in the console?

To add a custom map layer in the console, a GeoJSON file is required. GeoJSON is a popular format specifically designed for encoding geographic data structures, which makes it particularly suitable for representing various types of geographical features such as points, lines, and polygons, alongside their associated properties. This format is widely supported in mapping applications and tools because it seamlessly integrates with JavaScript, which is commonly used in web-based mapping solutions.

GeoJSON files are structured in a way that makes them easily interpretable by mapping libraries, allowing for the quick visualization of data layers on a map. The use of the GeoJSON format facilitates easier manipulation and display of geographic data, thus making it the preferred choice for adding custom layers in a map console environment.