Return totals in cart response formatted.

cocart-totals-html.php

<?php
add_filter( 'cocart_cart', 'cocart_totals_html' );

function cocart_totals_html( $cart ) {
	$decimals = wc_get_price_decimals();

	foreach( $cart['totals'] as $total => $value ) {
		$value = substr_replace( $value, '', intval( '-' . $decimals ) );
		$cart['totals'][$total] = html_entity_decode( strip_tags( wc_price( $value ) ) );
	}

	return $cart;
}