added whole system from ola4doc

sys/node_modules/es5-ext/math/imul/implement.js

@@ -0,0 +1,6 @@
+'use strict';
+
+if (!require('./is-implemented')()) {
+	Object.defineProperty(Math, 'imul', { value: require('./shim'),
+		configurable: true, enumerable: false, writable: true });
+}

sys/node_modules/es5-ext/math/imul/index.js

@@ -0,0 +1,5 @@
+'use strict';
+
+module.exports = require('./is-implemented')()
+	? Math.imul
+	: require('./shim');

sys/node_modules/es5-ext/math/imul/is-implemented.js

@@ -0,0 +1,7 @@
+'use strict';
+
+module.exports = function () {
+	var imul = Math.imul;
+	if (typeof imul !== 'function') return false;
+	return imul(-1, 8) === -8;
+};

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

@@ -0,0 +1,13 @@
+// Thanks: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference
+//         /Global_Objects/Math/imul
+
+'use strict';
+
+module.exports = function (x, y) {
+	var xh  = (x >>> 16) & 0xffff, xl = x & 0xffff
+	  , yh  = (y >>> 16) & 0xffff, yl = y & 0xffff;
+
+	// the shift by 0 fixes the sign on the high part
+	// the final |0 converts the unsigned value into a signed value
+	return ((xl * yl) + (((xh * yl + xl * yh) << 16) >>> 0) | 0);
+};