Add comprehensive tests for role middleware and fix package dependencies

node_modules/workerpool/src/environment.js

@@ -0,0 +1,36 @@
+var requireFoolWebpack = require('./requireFoolWebpack');
+
+// source: https://github.com/flexdinesh/browser-or-node
+var isNode = function (nodeProcess) {
+  return (
+    typeof nodeProcess !== 'undefined' &&
+    nodeProcess.versions != null &&
+    nodeProcess.versions.node != null
+  );
+}
+module.exports.isNode = isNode
+
+// determines the JavaScript platform: browser or node
+module.exports.platform = typeof process !== 'undefined' && isNode(process)
+  ? 'node'
+  : 'browser';
+
+// determines whether the code is running in main thread or not
+// note that in node.js we have to check both worker_thread and child_process
+var worker_threads = tryRequireFoolWebpack('worker_threads');
+module.exports.isMainThread = module.exports.platform === 'node'
+  ? ((!worker_threads || worker_threads.isMainThread) && !process.connected)
+  : typeof Window !== 'undefined';
+
+// determines the number of cpus available
+module.exports.cpus = module.exports.platform === 'browser'
+  ? self.navigator.hardwareConcurrency
+  : requireFoolWebpack('os').cpus().length;
+
+function tryRequireFoolWebpack (module) {
+  try {
+    return requireFoolWebpack(module);
+  } catch(err) {
+    return null
+  }
+}