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filter is not described

wp_theme_editor_filetypes filter-hook . WP 4.4.0

Filters the list of file types allowed for editing in the Theme editor.


add_filter( 'wp_theme_editor_filetypes', 'filter_function_name_177', 10, 2 );
function filter_function_name_177( $default_types, $theme ){
	// filter...

	return $default_types;
List of allowed file types.
The current Theme object.

Where the hook is called

wp-admin/includes/file.php 283
$file_types = apply_filters( 'wp_theme_editor_filetypes', $default_types, $theme );

Where the hook is used (in WP core)

Does not used.