Add node modules and compiled JavaScript from main

node_modules/p-each-series/index.js

@@ -0,0 +1,16 @@
+'use strict';
+
+const pEachSeries = async (iterable, iterator) => {
+	let index = 0;
+
+	for (const value of iterable) {
+		// eslint-disable-next-line no-await-in-loop
+		await iterator(await value, index++);
+	}
+
+	return iterable;
+};
+
+module.exports = pEachSeries;
+// TODO: Remove this for the next major release
+module.exports.default = pEachSeries;