refine:refine build_config

build/dev-server.js

@@ -1,4 +1,5 @@
 require('./check-versions')(); // 检查 Node 和 npm 版本
+
 var config = require('../config');
 if (!process.env.NODE_ENV) {
     process.env.NODE_ENV = JSON.parse(config.dev.env.NODE_ENV)
@@ -28,8 +29,8 @@ var devMiddleware = require('webpack-dev-middleware')(compiler, {
 });
 
 var hotMiddleware = require('webpack-hot-middleware')(compiler, {
-    log: () => {
-    }
+    log: false,
+    heartbeat: 2000
 });
 
 // force page reload when html-webpack-plugin template changes
@@ -40,8 +41,6 @@ compiler.plugin('compilation', function (compilation) {
     })
 });
 
-// compiler.apply(new DashboardPlugin());
-
 // proxy api requests
 Object.keys(proxyTable).forEach(function (context) {
     var options = proxyTable[context]
@@ -67,18 +66,26 @@ app.use(staticPath, express.static('./static'));
 
 var uri = 'http://localhost:' + port
 
-devMiddleware.waitUntilValid(function () {
-    console.log('> Listening at ' + uri + '\n')
-});
+var _resolve
+var readyPromise = new Promise(resolve => {
+  _resolve = resolve
+})
 
-module.exports = app.listen(port, function (err) {
-    if (err) {
-        console.log(err);
-        return
-    }
+console.log('> Starting dev server...')
+devMiddleware.waitUntilValid(() => {
+  console.log('> Listening at ' + uri + '\n')
+  // when env is testing, don't need open it
+  if (autoOpenBrowser && process.env.NODE_ENV !== 'testing') {
+    opn(uri)
+  }
+  _resolve()
+})
 
-    // when env is testing, don't need open it
-    if (autoOpenBrowser && process.env.NODE_ENV !== 'testing') {
-        opn(uri)
-    }
-});
+var server = app.listen(port)
+
+module.exports = {
+  ready: readyPromise,
+  close: () => {
+    server.close()
+  }
+}