added whole system from ola4doc

sys/node_modules/es5-ext/object/keys/implement.js

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

sys/node_modules/es5-ext/object/keys/index.js

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

sys/node_modules/es5-ext/object/keys/is-implemented.js

@@ -0,0 +1,8 @@
+'use strict';
+
+module.exports = function () {
+	try {
+		Object.keys('primitive');
+		return true;
+	} catch (e) { return false; }
+};

sys/node_modules/es5-ext/object/keys/shim.js

@@ -0,0 +1,7 @@
+'use strict';
+
+var keys = Object.keys;
+
+module.exports = function (object) {
+	return keys(object == null ? object : Object(object));
+};