Touch the first page to speed up the future rebuild times.

Author: arunoda

package.json

@@ -79,6 +79,7 @@
     "source-map-support": "0.4.11",
     "strip-ansi": "3.0.1",
     "styled-jsx": "0.5.7",
+    "touch": "^1.0.0",
     "url": "0.11.0",
     "uuid": "3.0.1",
     "webpack": "2.2.1",

server/on-demand-entry-handler.js

@@ -3,6 +3,7 @@ import { EventEmitter } from 'events'
 import { join } from 'path'
 import { parse } from 'url'
 import resolvePath from './resolve'
+import touch from 'touch'
 
 const ADDED = Symbol()
 const BUILDING = Symbol()
@@ -16,6 +17,7 @@ export default function onDemandEntryHandler (devMiddleware, compiler, {
   const entries = {}
   const lastAccessPages = ['']
   const doneCallbacks = new EventEmitter()
+  let touchedAPage = false
 
   compiler.plugin('make', function (compilation, done) {
     const allEntries = Object.keys(entries).map((page) => {
@@ -35,6 +37,17 @@ export default function onDemandEntryHandler (devMiddleware, compiler, {
       const entryInfo = entries[page]
       if (entryInfo.status !== BUILDING) return
 
+      // With this, we are triggering a filesystem based watch trigger
+      // It'll memorize some timestamp related info related to common files used
+      // in the page
+      // That'll reduce the page building time significantly.
+      if (!touchedAPage) {
+        setTimeout(() => {
+          touch.sync(entryInfo.pathname)
+        }, 0)
+        touchedAPage = true
+      }
+
       entryInfo.status = BUILT
       entries[page].lastActiveTime = Date.now()
       doneCallbacks.emit(page)
@@ -76,7 +89,7 @@ export default function onDemandEntryHandler (devMiddleware, compiler, {
 
         console.log(`> Building page: ${page}`)
 
-        entries[page] = { name, entry, status: ADDED }
+        entries[page] = { name, entry, pathname, status: ADDED }
         doneCallbacks.on(page, processCallback)
 
         devMiddleware.invalidate()

yarn.lock

@@ -3468,6 +3468,12 @@ node-pre-gyp@^0.6.29:
     tar "~2.2.1"
     tar-pack "~3.3.0"
 
+nopt@~1.0.10:
+  version "1.0.10"
+  resolved "https://registry.yarnpkg.com/nopt/-/nopt-1.0.10.tgz#6ddd21bd2a31417b92727dd585f8a6f37608ebee"
+  dependencies:
+    abbrev "1"
+
 nopt@~3.0.1, nopt@~3.0.6:
   version "3.0.6"
   resolved "https://registry.yarnpkg.com/nopt/-/nopt-3.0.6.tgz#c6465dbf08abcd4db359317f79ac68a646b28ff9"
@@ -4596,6 +4602,12 @@ to-fast-properties@^1.0.1:
   version "1.0.2"
   resolved "https://registry.yarnpkg.com/to-fast-properties/-/to-fast-properties-1.0.2.tgz#f3f5c0c3ba7299a7ef99427e44633257ade43320"
 
+touch@^1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/touch/-/touch-1.0.0.tgz#449cbe2dbae5a8c8038e30d71fa0ff464947c4de"
+  dependencies:
+    nopt "~1.0.10"
+
 tough-cookie@^2.3.2, tough-cookie@~2.3.0:
   version "2.3.2"
   resolved "https://registry.yarnpkg.com/tough-cookie/-/tough-cookie-2.3.2.tgz#f081f76e4c85720e6c37a5faced737150d84072a"