Store Advanced Custom Field Local JSON in plugin

acf-local-json-plugin.php

<?php
/*
Plugin Name: ACF Local JSON plugin
Plugin URI: 
Description: Put this file in a plugin folder and create an /acf directory inside the plugin, ie: /my-plugin/acf
Author: khromov
Version: 0.1
*/

//Change ACF Local JSON save location to /acf folder inside this plugin
add_filter('acf/settings/save_json', function() {
	return dirname(__FILE__) . '/acf';
});

//Include the /acf folder in the places to look for ACF Local JSON files
add_filter('acf/settings/load_json', function() {
	$paths[] = dirname(__FILE__) . '/acf';
	return $paths;
});