From 2c48e5c42887fecabc01c5f5b6f3dd8e06d3372f Mon Sep 17 00:00:00 2001
From: Kyle Mathews <mathews.kyle@gmail.com>
Date: Tue, 11 Oct 2016 13:19:01 -0700
Subject: [PATCH] Add hard-source-webpack-plugin

---
 lib/utils/webpack.config.js | 41 +++++++++++++++++++++++++++++++++++++
 package.json                |  1 +
 2 files changed, 42 insertions(+)

diff --git a/lib/utils/webpack.config.js b/lib/utils/webpack.config.js
index a1e9416719f98..6347d1a37b23d 100644
--- a/lib/utils/webpack.config.js
+++ b/lib/utils/webpack.config.js
@@ -6,6 +6,7 @@ import Config from 'webpack-configurator'
 import ExtractTextPlugin from 'extract-text-webpack-plugin'
 import StaticSiteGeneratorPlugin from 'static-site-generator-webpack-plugin'
 import { StatsWriterPlugin } from 'webpack-stats-plugin'
+import HardSourceWebpackPlugin from 'hard-source-webpack-plugin'
 
 import webpackModifyValidate from './webpack-modify-validate'
 
@@ -109,6 +110,16 @@ module.exports = (program, directory, suppliedStage, webpackPort = 1500, pages =
             __PREFIX_LINKS__: program.prefixLinks,
             __LINK_PREFIX__: JSON.stringify(siteDB().get(`config`).linkPrefix),
           }),
+          new HardSourceWebpackPlugin({
+            cacheDirectory: '/tmp/[confighash]',
+            recordsPath: '/tmp/[confighash]/records.json',
+            configHash: (webpackConfig) => stage,
+            environmentPaths: {
+              root: process.cwd(),
+              directories: ['node_modules'],
+              files: ['package.json'],
+            },
+          }),
         ]
       case `build-css`:
         return [
@@ -120,6 +131,16 @@ module.exports = (program, directory, suppliedStage, webpackPort = 1500, pages =
             __LINK_PREFIX__: JSON.stringify(siteDB().get(`config`).linkPrefix),
           }),
           new ExtractTextPlugin(`styles.css`, { allChunks: true }),
+          new HardSourceWebpackPlugin({
+            cacheDirectory: '/tmp/[confighash]',
+            recordsPath: '/tmp/[confighash]/records.json',
+            configHash: (webpackConfig) => stage,
+            environmentPaths: {
+              root: process.cwd(),
+              directories: ['node_modules'],
+              files: ['package.json'],
+            },
+          }),
         ]
       case `build-html`:
         return [
@@ -132,6 +153,16 @@ module.exports = (program, directory, suppliedStage, webpackPort = 1500, pages =
             __LINK_PREFIX__: JSON.stringify(siteDB().get(`config`).linkPrefix),
           }),
           new ExtractTextPlugin(`build-html-styles.css`),
+          new HardSourceWebpackPlugin({
+            cacheDirectory: '/tmp/[confighash]',
+            recordsPath: '/tmp/[confighash]/records.json',
+            configHash: (webpackConfig) => stage,
+            environmentPaths: {
+              root: process.cwd(),
+              directories: ['node_modules'],
+              files: ['package.json'],
+            },
+          }),
         ]
       case `build-javascript`: {
         // Get array of page template component names.
@@ -215,6 +246,16 @@ module.exports = (program, directory, suppliedStage, webpackPort = 1500, pages =
               events: true,
             },
           }),
+          new HardSourceWebpackPlugin({
+            cacheDirectory: '/tmp/[confighash]',
+            recordsPath: '/tmp/[confighash]/records.json',
+            configHash: (webpackConfig) => stage,
+            environmentPaths: {
+              root: process.cwd(),
+              directories: ['node_modules'],
+              files: ['package.json'],
+            },
+          }),
         ]
       }
       default:
diff --git a/package.json b/package.json
index 4f8285c947b71..fa9b0342b42d5 100644
--- a/package.json
+++ b/package.json
@@ -49,6 +49,7 @@
     "graphql-relay": "^0.4.3",
     "hapi": "^8.5.1",
     "hapi-graphql": "^1.0.1",
+    "hard-source-webpack-plugin": "^0.1.0",
     "highlight.js": "^9.6.0",
     "history": "^2.1.2",
     "invariant": "^2.2.1",