Izmjenjena struktura, dodan backand

web/node_modules/es5-ext/math/acosh/shim.js

@@ -0,0 +1,12 @@
+"use strict";
+
+var log = Math.log, sqrt = Math.sqrt;
+
+module.exports = function (value) {
+	if (isNaN(value)) return NaN;
+	value = Number(value);
+	if (value < 1) return NaN;
+	if (value === 1) return 0;
+	if (value === Infinity) return value;
+	return log(value + sqrt(value * value - 1));
+};