File Nesting Dialog
This dialog opens when you click File Nesting on the toolbar of the Solution Explorer.
JetBrains Rider provides a default configuration of file types and typical suffixes that are used for related file types — for example, a file with the .map.ts suffix is normally related to a file having the same name and the .ts extension — such files will be automatically grouped in the Solution Explorer.
You can configure these relations or disable logical nesting altogether by clicking on the toolbar of the Solution Explorer. Grouping of files in this way will not make any changes in your project/solution config files.
Show files with the same names as nested
Click this button to add a new row and specify the "parent" file suffix and the matching "child" file suffix.
Click this button to remove the selected rule from the list.
Reset to Default
Click this button to discard all your custom patterns and reload the default rules.