Load the hot-reloader when only needed. (vercel#2566)

This reduce the server boot-up time a lot. With a 2015 MacBook Pro, it went down from 1000ms to 200ms
igorbarbashin · Jul 15, 2017 · f25055c · f25055c
1 parent 20db38e
commit f25055c
Showing 1 changed file with 6 additions and 2 deletions.
diff --git a/server/index.js b/server/index.js
@@ -12,7  12,6 @@ import {
   renderScriptError
 } from './render'
 import Router from './router'
-import HotReloader from './hot-reloader'
 import { resolveFromList } from './resolve'
 import { getAvailableChunks } from './utils'
 import getConfig from './config'
@@ -35,7  34,7 @@ export default class Server {
     this.dev = dev
     this.quiet = quiet
     this.router = new Router()
-    this.hotReloader = dev ? new HotReloader(this.dir, { quiet, conf }) : null
     this.hotReloader = dev ? this.getHotReloader(this.dir, { quiet, conf }) : null
     this.http = null
     this.config = getConfig(this.dir, conf)
     this.dist = this.config.distDir
@@ -59,6  58,11 @@ export default class Server {
     this.defineRoutes()
   }
 
   getHotReloader (dir, options) {
     const HotReloader = require('./hot-reloader').default
     return new HotReloader(dir, options)
   }
 
   handleRequest (req, res, parsedUrl) {
     // Parse url if parsedUrl not provided
     if (!parsedUrl || typeof parsedUrl !== 'object') {