can now construct with both stack paths or modules

lib/local-web-server.js

@@ -4,6 +4,7 @@ const ansi = require('ansi-escape-sequences')
 const path = require('path')
 const CommandLineTool = require('command-line-tool')
 const flatten = require('reduce-flatten')
+const arrayify = require('array-back')
 
 /**
  * @module local-web-server
@@ -26,7 +27,7 @@ class LocalWebServer {
     const stored = loadConfig('local-web-server')
 
     /* manually scan for any --stack passed, as we may need to display stack options */
-    const stackPaths = initOptions.stack || stored.stack || []
+    const stackPaths = arrayify(initOptions.stack || stored.stack) || []
     const stackIndex = process.argv.indexOf('--stack')
     if (stackIndex > -1) {
       for (var i = stackIndex + 1; i < process.argv.length; i++) {
@@ -39,8 +40,10 @@ class LocalWebServer {
       }
     }
 
-    /* load the stack */
+    /* if the user did not supply a stack, use the default */
     if (!stackPaths.length) stackPaths.push(path.resolve(__dirname, '..', 'node_modules', 'local-web-server-default-stack'))
+
+    /* load the stack */
     const stackModules = stackPaths
       .map(stackPath => loadStack(stackPath))
       .map(Middleware => new Middleware())
@@ -216,6 +219,7 @@ function getIPList () {
  */
 function loadStack (modulePath) {
   let module
+  if (isModule(modulePath)) return modulePath
   const tried = []
   if (modulePath) {
     try {
@@ -237,7 +241,7 @@ function loadStack (modulePath) {
     }
   }
   if (module) {
-    if (!(module.prototype.middleware || module.prototype.stack)) {
+    if (!isModule(module)) {
       const insp = require('util').inspect(module, { depth: 3, colors: true })
       const msg = `Not valid Middleware at: ${insp}`
       tool.halt(new Error(msg))
@@ -249,4 +253,8 @@ function loadStack (modulePath) {
   return module
 }
 
+function isModule (module) {
+  return module.prototype.middleware || module.prototype.stack
+}
+
 module.exports = LocalWebServer