Function getSimilarities

lib/util/deterministicGrouping.js:287–300

(nodes)

 * @returns {Similarities} similarities
 */
const getSimilarities = (nodes) => {
	// calculate similarities between lexically adjacent nodes
	/** @type {Similarities} */
	const similarities = [];
	/** @type {undefined | Node<T>} */
	let last;
	for (const node of nodes) {
		if (last !== undefined) {
			similarities.push(similarity(last.key, node.key));
		}
		last = node;
	}
	return similarities;
};

/**
 * Defines the shared type used by this module.