printSizes = (sizes, { formatSize = n => `${n}` }) => {
	const keys = Object.keys(sizes);
	if (keys.length > 1) {
		return keys.map(key => `${formatSize(sizes[key])} (${key})`).join(" ");
	} else if (keys.length === 1) {
		return formatSize(sizes[keys[0]]);
	}
}
@param {Record<string, number>} sizes sizes by source type
@param {StatsPrinterContext} options options
@returns {string | undefined} text