Function parseRange

lib/util/semver.js:268–302

(str)

	 * @returns {SemVerRange}
	 */
	const parseRange = (str) => {
		// range      ::= hyphen | simple ( ' ' ( ' ' ) * simple ) * | ''
		// hyphen     ::= partial ( ' ' ) * ' - ' ( ' ' ) * partial
		const items = str.split(/\s+-\s+/);

		if (items.length === 1) {
			str = str.trim();

			/** @type {SemVerRangeItem[][]} */
			const items = [];
			const r = /[-0-9A-Za-z]\s+/g;
			var start = 0;
			/** @type {RegExpExecArray | null} */
			var match;
			while ((match = r.exec(str))) {
				const end = match.index + 1;
				items.push(
					/** @type {SemVerRangeItem[]} */
					(parseSimple(str.slice(start, end).trim()))
				);
				start = end;
			}
			items.push(
				/** @type {SemVerRangeItem[]} */
				(parseSimple(str.slice(start).trim()))
			);
			return combine(items, 2);
		}

		const a = parsePartial(items[0]);
		const b = parsePartial(items[1]);
		// >=a <=b => and( >=a, or( <b, =b ) ) => >=a, <b, =b, or, and
		// eslint-disable-next-line no-sparse-arrays
		return [, toFixed(b), negate(b), 1, a, 2];
	};

	/**
	 * Returns the sem ver range.