feat(pwa) use offline-plugin for service worker setup and offline sup…

package.json

@@ -109,6 +109,7 @@
     "modularscale-sass": "^3.0.3",
     "node-sass": "^4.5.3",
     "npm-run-all": "^4.1.1",
+    "offline-plugin": "^5.0.7",
     "optimize-css-assets-webpack-plugin": "^5.0.1",
     "postcss-loader": "^2.1.3",
     "redirect-webpack-plugin": "^0.1.1",

src/components/Site/Site.jsx

@@ -31,6 +31,11 @@ import './Site.scss';
 // Load Content Tree
 import Content from '../../_content.json';
 
+// call offline plugin so it can build
+if (isClient) {
+  require('offline-plugin/runtime').install();
+}
+
 class Site extends React.Component {
   state = {
     mobileSidebarOpen: false

webpack.prod.js

@@ -7,6 +7,7 @@ const flattenContentTree = require('./src/utilities/flatten-content-tree');
 const contentTree = require('./src/_content.json');
 const OptimizeCSSAssetsPlugin = require('optimize-css-assets-webpack-plugin');
 const TerserJSPlugin = require('terser-webpack-plugin');
+const OfflinePlugin = require('offline-plugin');
 
 // Load Common Configuration
 const common = require('./webpack.common.js');
@@ -43,7 +44,8 @@ const prod = {
         to: './assets/'
       },
       'CNAME'
-    ])
+    ]),
+    new OfflinePlugin()
   ]
 };
 

yarn.lock

@@ -3057,16 +3057,16 @@ deep-equal@^1.0.0, deep-equal@^1.0.1:
   resolved "https://registry.yarnpkg.com/deep-equal/-/deep-equal-1.0.1.tgz#f5d260292b660e084eff4cdbc9f08ad3247448b5"
   integrity sha1-9dJgKStmDghO/0zbyfCK0yR0SLU=
 
+deep-extend@^0.5.1, deep-extend@~0.5.1:
+  version "0.5.1"
+  resolved "https://registry.yarnpkg.com/deep-extend/-/deep-extend-0.5.1.tgz#b894a9dd90d3023fbf1c55a394fb858eb2066f1f"
+  integrity sha512-N8vBdOa+DF7zkRrDCsaOXoCs/E2fJfx9B9MrKnnSiHNh4ws7eSys6YQE4KvT1cecKmOASYQBhbKjeuDD9lT81w==
+
 deep-extend@^0.6.0:
   version "0.6.0"
   resolved "https://registry.yarnpkg.com/deep-extend/-/deep-extend-0.6.0.tgz#c4fa7c95404a17a9c3e8ca7e1537312b736330ac"
   integrity sha512-LOHxIOaPYdHlJRtCQfDIVZtfw/ufM8+rVj649RIHzcm/vGwQRXFt6OPqIFWsm2XEMrNIEtWR64sY1LEKD2vAOA==
 
-deep-extend@~0.5.1:
-  version "0.5.1"
-  resolved "https://registry.yarnpkg.com/deep-extend/-/deep-extend-0.5.1.tgz#b894a9dd90d3023fbf1c55a394fb858eb2066f1f"
-  integrity sha512-N8vBdOa+DF7zkRrDCsaOXoCs/E2fJfx9B9MrKnnSiHNh4ws7eSys6YQE4KvT1cecKmOASYQBhbKjeuDD9lT81w==
-
 deep-is@~0.1.3:
   version "0.1.3"
   resolved "https://registry.yarnpkg.com/deep-is/-/deep-is-0.1.3.tgz#b369d6fb5dbc13eecf524f91b070feedc357cf34"
@@ -3434,6 +3434,11 @@ [email protected]:
   resolved "https://registry.yarnpkg.com/ee-first/-/ee-first-1.1.1.tgz#590c61156b0ae2f4f0255732a158b266bc56b21d"
   integrity sha1-WQxhFWsK4vTwJVcyoViyZrxWsh0=
 
+ejs@^2.3.4:
+  version "2.6.1"
+  resolved "https://registry.yarnpkg.com/ejs/-/ejs-2.6.1.tgz#498ec0d495655abc6f23cd61868d926464071aa0"
+  integrity sha512-0xy4A/twfrRCnkhfk8ErDi5DqdAsAqeGxht4xkCUrsvhhbQNs7E+4jV0CN7+NKIY0aHE72+XvqtBIXzD31ZbXQ==
+
 electron-to-chromium@^1.2.7, electron-to-chromium@^1.3.124, electron-to-chromium@^1.3.30, electron-to-chromium@^1.3.47:
   version "1.3.125"
   resolved "https://registry.yarnpkg.com/electron-to-chromium/-/electron-to-chromium-1.3.125.tgz#dbde0e95e64ebe322db0eca764d951f885a5aff2"
@@ -6374,7 +6379,7 @@ loader-runner@^2.3.0:
   resolved "https://registry.yarnpkg.com/loader-runner/-/loader-runner-2.4.0.tgz#ed47066bfe534d7e84c4c7b9998c2a75607d9357"
   integrity sha512-Jsmr89RcXGIwivFY21FcRrisYZfvLMTWx5kOLc+JTxtpBOG6xML0vzbc6SEQG2FO9/4Fc3wW4LVcB5DmGflaRw==
 
-loader-utils@^0.2.10, loader-utils@^0.2.16:
+loader-utils@0.2.x, loader-utils@^0.2.10, loader-utils@^0.2.16:
   version "0.2.17"
   resolved "https://registry.yarnpkg.com/loader-utils/-/loader-utils-0.2.17.tgz#f86e6374d43205a6e6c60e9196f17c0299bfb348"
   integrity sha1-+G5jdNQyBabmxg6RlvF8Apm/s0g=
@@ -7071,7 +7076,7 @@ minimalistic-crypto-utils@^1.0.0, minimalistic-crypto-utils@^1.0.1:
   resolved "https://registry.yarnpkg.com/minimalistic-crypto-utils/-/minimalistic-crypto-utils-1.0.1.tgz#f6c00c1c0b082246e5c4d99dfb8c7c083b2b582a"
   integrity sha1-9sAMHAsIIkblxNmd+4x8CDsrWCo=
 
-"minimatch@2 || 3", minimatch@^3.0.2, minimatch@^3.0.4, minimatch@~3.0.2, minimatch@~3.0.4:
+"minimatch@2 || 3", minimatch@^3.0.2, minimatch@^3.0.3, minimatch@^3.0.4, minimatch@~3.0.2, minimatch@~3.0.4:
   version "3.0.4"
   resolved "https://registry.yarnpkg.com/minimatch/-/minimatch-3.0.4.tgz#5166e286457f03306064be5497e8dbb0c3d32083"
   integrity sha512-yJHVQEhyqPLUTgt9B83PXu6W3rx4MvvHvSUvToogpwoGDOUQ+yDrR0HRot+yOCdCO7u4hX3pWft6kWBBcqh0UA==
@@ -7666,6 +7671,17 @@ obuf@^1.0.0, obuf@^1.1.2:
   resolved "https://registry.yarnpkg.com/obuf/-/obuf-1.1.2.tgz#09bea3343d41859ebd446292d11c9d4db619084e"
   integrity sha512-PX1wu0AmAdPqOL1mWhqmlOd8kOIZQwGZw6rh7uby9fTc5lhaOWFLX3I6R1hrF9k3zUY40e6igsLGkDXK92LJNg==
 
+offline-plugin@^5.0.7:
+  version "5.0.7"
+  resolved "https://registry.yarnpkg.com/offline-plugin/-/offline-plugin-5.0.7.tgz#26936ad1a7699f4d67e0a095a258972a4ccf1788"
+  integrity sha512-ArMFt4QFjK0wg8B5+R/6tt65u6Dk+Pkx4PAcW5O7mgIF3ywMepaQqFOQgfZD4ybanuGwuJihxUwMRgkzd+YGYw==
+  dependencies:
+    deep-extend "^0.5.1"
+    ejs "^2.3.4"
+    loader-utils "0.2.x"
+    minimatch "^3.0.3"
+    slash "^1.0.0"
+
 on-finished@~2.3.0:
   version "2.3.0"
   resolved "https://registry.yarnpkg.com/on-finished/-/on-finished-2.3.0.tgz#20f1336481b083cd75337992a16971aa2d906947"