wp_ajax_edit_theme_plugin_file()

function wp_ajax_edit_theme_plugin_file() {
	$r = wp_edit_theme_plugin_file( wp_unslash( $_POST ) ); // Validation of args is done in wp_edit_theme_plugin_file().
	if ( is_wp_error( $r ) ) {
		wp_send_json_error( array_merge(
			array(
				'code' => $r->get_error_code(),
				'message' => $r->get_error_message(),
			),
			(array) $r->get_error_data()
		) );
	} else {
		wp_send_json_success( array(
			'message' => __( 'File edited successfully.' ),
		) );
	}
}