Auto clear visitors' cache by auto incrementing version based on theme version number

cache-buster.php

<?php
/**
* Enqueue CSS & scripts file
* The "Cache Buster" appends the theme version number as a ?ver=
* The "Cache Buster" auto increments whenever the theme's version number increments
* This gets visitors to load the new CSS/JS whenever the theme updates
*/

function bp_enqueue() {
	// Increments the version number for css/js based on the theme's version number
	// Increment the theme version number to reset the cashe for the site files
	$cache_buster = wp_get_theme()->get('Version');

  wp_register_script('bp-scripts', get_stylesheet_directory_uri() . '/scripts.js', array(), $cache_buster, true);
	wp_enqueue_script('bp-scripts');

	// Main stylesheet
	wp_enqueue_style('bp-styles', get_stylesheet_directory_uri() . '/style.css', array(), $cache_buster);
}
add_action( 'wp_enqueue_scripts', 'bp_enqueue' );