[WordPress] Using SCRIPT_DEBUG To Debug JavaScript Files in WordPress

00-default-constants.php

<?php

// Add define('SCRIPT_DEBUG', true); to wp-config.php to enable loading of non-minified,
// non-concatenated scripts and stylesheets.
if ( ! defined( 'SCRIPT_DEBUG' ) ) {
	if ( ! empty( $GLOBALS['wp_version'] ) ) {
		$develop_src = false !== strpos( $GLOBALS['wp_version'], '-src' );
	} else {
		$develop_src = false;
	}

	define( 'SCRIPT_DEBUG', $develop_src );
}

01-loading-unminified-files.php

<?php

/* If we're debugging JavaScript files, define the
 * suffix for the file to load the proper version.
 */
$js_suffix = ( defined( 'SCRIPT_DEBUG' ) ) ? '.min.js' : '.js';

wp_enqueue_script(
	'acme-demo-javascript',
	plugin_dir_url( dirname( __FILE__ ) ) . 'admin/assets/js/large-button' . $js_suffix,
	array( 'jquery' ),
	'1.0.0',
	false
);