Function getCommonPrefix

lib/util/compileBooleanMatcher.js:179–191

(items)

 * @returns {string} common prefix
 */
const getCommonPrefix = (items) => {
	let prefix = items[0];
	for (let i = 1; i < items.length; i++) {
		const item = items[i];
		for (let p = 0; p < prefix.length; p++) {
			if (item[p] !== prefix[p]) {
				prefix = prefix.slice(0, p);
				break;
			}
		}
	}
	return prefix;
};

/**
 * Gets common suffix.