Function getKnownProperties

lib/css/CssParser.js:467–479

(options = {})

 * @returns {Map<string, Record<string, number>>} known properties table
 */
const getKnownProperties = (options = {}) => {
	const key =
		(options.animation ? 1 : 0) |
		(options.container ? 2 : 0) |
		(options.customIdents ? 4 : 0) |
		(options.grid ? 8 : 0);
	let table = KNOWN_PROPERTIES_CACHE.get(key);
	if (table === undefined) {
		table = buildKnownProperties(options);
		KNOWN_PROPERTIES_CACHE.set(key, table);
	}
	return table;
};

const EMPTY_COMMENT_OPTIONS = {
	options: null,