project bootstrap

node_modules/webpack/lib/util/IterableHelpers.js

@@ -0,0 +1,46 @@
+/*
+	MIT License http://www.opensource.org/licenses/mit-license.php
+	Author Tobias Koppers @sokra
+*/
+
+"use strict";
+
+/**
+ * @template T
+ * @param {Iterable<T>} set a set
+ * @returns {T | undefined} last item
+ */
+const last = set => {
+	let last;
+	for (const item of set) last = item;
+	return last;
+};
+
+/**
+ * @template T
+ * @param {Iterable<T>} iterable iterable
+ * @param {function(T): boolean} filter predicate
+ * @returns {boolean} true, if some items match the filter predicate
+ */
+const someInIterable = (iterable, filter) => {
+	for (const item of iterable) {
+		if (filter(item)) return true;
+	}
+	return false;
+};
+
+/**
+ * @template T
+ * @param {Iterable<T>} iterable an iterable
+ * @returns {number} count of items
+ */
+const countIterable = iterable => {
+	let i = 0;
+	// eslint-disable-next-line no-unused-vars
+	for (const _ of iterable) i++;
+	return i;
+};
+
+exports.last = last;
+exports.someInIterable = someInIterable;
+exports.countIterable = countIterable;