Add comprehensive tests for role middleware and fix package dependencies

node_modules/workerpool/src/debug-port-allocator.js

@@ -0,0 +1,28 @@
+'use strict';
+
+var MAX_PORTS = 65535;
+module.exports = DebugPortAllocator;
+function DebugPortAllocator() {
+  this.ports = Object.create(null);
+  this.length = 0;
+}
+
+DebugPortAllocator.prototype.nextAvailableStartingAt = function(starting) {
+  while (this.ports[starting] === true) {
+    starting++;
+  }
+
+  if (starting >= MAX_PORTS) {
+    throw new Error('WorkerPool debug port limit reached: ' + starting + '>= ' + MAX_PORTS );
+  }
+
+  this.ports[starting] = true;
+  this.length++;
+  return starting;
+};
+
+DebugPortAllocator.prototype.releasePort = function(port) {
+  delete this.ports[port];
+  this.length--;
+};
+