WordPress at a glance
action is not described

pre_uninstall_plugin action-hook . WP 4.5.0

Fires in uninstall_plugin() immediately before the plugin is uninstalled.

Usage

add_action( 'pre_uninstall_plugin', 'action_function_name_9302', 10, 2 );
function action_function_name_9302( $plugin, $uninstallable_plugins ){
	// action...
}
$plugin(string)
Path to the main plugin file from plugins directory.
$uninstallable_plugins(array)
Uninstallable plugins.

Where the hook is called

uninstall_plugin()
wp-admin/includes/plugin.php 1019
do_action( 'pre_uninstall_plugin', $plugin, $uninstallable_plugins );

Where the hook is used (in WP core)

Does not used.