So siehts ganz gut aus !

node_modules/es5-ext/number/is-nan/implement.js

@@ -0,0 +1,8 @@
+"use strict";
+
+if (!require("./is-implemented")()) {
+	Object.defineProperty(Number, "isNaN", { value: require("./shim"),
+		configurable: true,
+enumerable: false,
+writable: true });
+}

node_modules/es5-ext/number/is-nan/index.js

@@ -0,0 +1,5 @@
+"use strict";
+
+module.exports = require("./is-implemented")()
+	? Number.isNaN
+	: require("./shim");

node_modules/es5-ext/number/is-nan/is-implemented.js

@@ -0,0 +1,7 @@
+"use strict";
+
+module.exports = function () {
+	var numberIsNaN = Number.isNaN;
+	if (typeof numberIsNaN !== "function") return false;
+	return !numberIsNaN({}) && numberIsNaN(NaN) && !numberIsNaN(34);
+};

node_modules/es5-ext/number/is-nan/shim.js

@@ -0,0 +1,6 @@
+"use strict";
+
+module.exports = function (value) {
+	// eslint-disable-next-line no-self-compare
+	return value !== value;
+};