added whole system from ola4doc

sys/node_modules/es5-ext/math/log1p/shim.js

@@ -0,0 +1,17 @@
+// Thanks: https://github.com/monolithed/ECMAScript-6/blob/master/ES6.js
+
+'use strict';
+
+var log = Math.log;
+
+module.exports = function (x) {
+	if (isNaN(x)) return NaN;
+	x = Number(x);
+	if (x < -1) return NaN;
+	if (x === -1) return -Infinity;
+	if (x === 0) return x;
+	if (x === Infinity) return Infinity;
+
+	if (x > -1.0e-8 && x < 1.0e-8) return (x - x * x / 2);
+	return log(1 + x);
+};