TYPO3 Core

The "documentation of the TypoScript @import feature"https://docs.typo3.org/m/typo3/reference-coreapi/master/en-us/ApiOverview/TypoScriptSyntax/Syntax/Includes.html#includes claims that importing from a directory will automatically only load .typoscript files in that directory:

# The filename extension can be omitted and defaults to .typoscript
@import 'EXT:myproject/Configuration/TypoScript/'

However, this is not true. If a directory is imported like this, all files in that directory are imported as TypoScript and then parsed as such, leading to various errors in the Object Browser / Template Analyzer.

Here fileadmin/form_definitions is imported and a form definition exists in this directory:

The Template Analyzer then clearly reveals that the form definition has been imported, too: