Using the fl_builder_icon_sets filter to add custom icon fonts to Beaver Builder

fl_builder_icon_sets.php

function my_custom_icons( $sets ) {
	
	$path  = get_stylesheet_directory() . '/my-custom-icons/';
	$url   = get_stylesheet_directory_uri() . '/my-custom-icons/';
	$data  = json_decode( file_get_contents( $path . 'selection.json' ) );
	$icons = array();
	
	foreach ( $data->icons as $icon ) {

		$prefs	 = $data->preferences->fontPref;
		$postfix = isset( $prefs->postfix ) ? $prefs->postfix : '';

		if ( isset( $prefs->selector ) && 'class' == $prefs->selector ) {
			$selector = trim( str_replace( '.', ' ', $prefs->classSelector ) ) . ' ';
		} else {
			$selector = '';
		}

		$icons[] = $selector . $prefs->prefix . $icon->properties->name . $postfix;
	}
	
	$sets[ 'my-custom-icons' ] = array(
		'name' 	     => 'My Custom Icons',
		'prefix'     => '',
		'type'       => 'icomoon',
		'path'       => $path,
		'url'        => $url,
		'stylesheet' => $url . 'style.css',
		'icons'		   => $icons,
	);
	
	return $sets;
}

add_filter( 'fl_builder_icon_sets', 'my_custom_icons' );