Enqueue and preload a font in WordPress

enqueue-preload-font.php

function enqueue_font_preload() {
	wp_enqueue_style('example-font-handle', 'https://domain.com/wp-content/font-file.woff2', array(), null);
}
add_action('wp_enqueue_scripts', 'enqueue_font_preload');
function style_loader_tag_filter_preload($html, $handle) {
	if($handle === 'example-font-handle') {
		$new_html = str_replace("text/css", "font/woff2", $html);
		return str_replace("rel='stylesheet'", "rel='preload' as='font' crossorigin='anonymous'", $new_html);
	}
	return $html;
}
add_filter('style_loader_tag', 'style_loader_tag_filter_preload', 10, 2);