Function flattenSharedLabels

lib/registry.js:217–227

(labels)

const sharedLabelCache = new WeakMap();
function flattenSharedLabels(labels) {
	const cached = sharedLabelCache.get(labels);
	if (cached) {
		return cached;
	}

	const formattedLabels = formatLabels(labels);
	const flattened = formattedLabels.join(',');
	sharedLabelCache.set(labels, flattened);
	return flattened;
}
function escapeLabelValue(str) {
	if (typeof str !== 'string') {
		return str;