Merge branch 'dev' of github.com:Atinux/nuxt.js into dev

lib/module.js

@@ -10,6 +10,7 @@ class Module {
   constructor (nuxt) {
     this.nuxt = nuxt
     this.options = nuxt.options
+    this.modules = []
   }
 
   addVendor (vendor) {
@@ -75,7 +76,14 @@ class Module {
     this.options.router.extendRoutes = chainFn(this.options.router.extendRoutes, fn)
   }
 
-  installModule (moduleOpts) {
+  requireModule (moduleOpts) {
+    if (this.modules.indexOf(moduleOpts) !== -1 || this.modules.indexOf(moduleOpts.src) !== -1) {
+      return false
+    }
+    return this.addModule(moduleOpts)
+  }
+
+  addModule (moduleOpts) {
     /* istanbul ignore if */
     if (!moduleOpts) {
       return
@@ -107,6 +115,8 @@ class Module {
       // eslint-disable-next-line no-console
       console.error('[Nuxt] Module should be a function', module)
     }
+    // Add module to this.modules
+    this.modules.push(module)
     // Call module with `this` context and pass options
     return new Promise((resolve, reject) => {
       const result = module.call(this, options, err => {

lib/nuxt.js

@@ -118,7 +118,7 @@ class Nuxt {
     // Add module integration
     this.module = new Module(this)
     // Install all modules in sequence and then return `this` instance
-    return utils.sequence(options.modules, this.module.installModule.bind(this.module))
+    return utils.sequence(options.modules, this.module.addModule.bind(this.module))
       .then(() => this)
       .catch(/* istanbul ignore next */ (err) => {
         console.error('[nuxt] error while initializing modules') // eslint-disable-line no-console

lib/server.js

@@ -2,6 +2,7 @@
 
 const http = require('http')
 const connect = require('connect')
+const path = require('path')
 
 class Server {
   constructor (nuxt) {
@@ -11,15 +12,29 @@ class Server {
     this.server = http.createServer(this.app)
     // Add Middleware
     this.nuxt.options.serverMiddleware.forEach(m => {
+      this.useMiddleware(m)
+    })
+    // Add default render middleware
+    this.useMiddleware(this.render.bind(this))
+    return this
+  }
+
+  useMiddleware (m) {
+    // Require if needed
+    if (typeof m === 'string') {
+      let src = m
+      // Using ~ shorthand to resolve from project srcDir
+      if (src.indexOf('~') === 0) {
+        src = path.resolve(this.nuxt.options.srcDir, src.substr(1))
+      }
+      // eslint-disable-next-line no-eval
+      m = eval('require')(src)
+    }
     if (m instanceof Function) {
       this.app.use(m)
     } else if (m && m.path && m.handler) {
       this.app.use(m.path, m.handler)
     }
-    })
-    // Add default render middleware
-    this.app.use(this.render.bind(this))
-    return this
   }
 
   render (req, res, next) {