use @fortawesome/fontawesome-free

package.json

@@ -44,7 +44,7 @@
     "@babel/plugin-proposal-class-properties": "^7.5.5",
     "@babel/polyfill": "^7.6.0",
     "@babel/preset-typescript": "^7.6.0",
-    "@fortawesome/fontawesome-pro": "^5.12.0",
+    "@fortawesome/fontawesome-free": "^5.12.0",
     "@hot-loader/react-dom": "^16.9.0",
     "@polkadot/api": "^0.96.1",
     "@types/jest": "24.0.15",

src/index.js

@@ -12,7 +12,11 @@ fileOps.fsType = 'electron'
 
 import('./scss/fonts/open_sans.css')
 import('./scss/fonts/hack.css')
-import('@fortawesome/fontawesome-pro/js/all')
+try {
+  require('@fortawesome/fontawesome-pro/js/all')
+} catch (e) {
+  require('@fortawesome/fontawesome-free/js/all')
+}
 
 document.title = process.env.PROJECT_NAME
 ReactDOM.render(<App />, document.getElementById('root'))

yarn.lock

@@ -2011,10 +2011,10 @@
   resolved "https://registry.yarnpkg.com/@emotion/weak-memoize/-/weak-memoize-0.2.5.tgz#8eed982e2ee6f7f4e44c253e12962980791efd46"
   integrity sha512-6U71C2Wp7r5XtFtQzYrW5iKFT67OixrSxjI4MptCHzdSVlgabczzqLe0ZSgnub/5Kp4hSbpDB1tMytZY9pwxxA==
 
-"@fortawesome/fontawesome-pro@^5.12.0":
-  version "5.12.0"
-  resolved "https://npm.fontawesome.com/@fortawesome/fontawesome-pro/-/5.12.0/fontawesome-pro-5.12.0.tgz#a9116c8c832ca1d1a9747ca48d3f9c596028fd46"
-  integrity sha512-EKKR4p0higjsIPKjSSkGqtweUwo/GgR/zKL4rCwzF5Z/BZ/ebJZaS8ZjGE7YUNEN63SYk2WhpJVI+l9dwfU7RQ==
+"@fortawesome/fontawesome-free@^5.12.0":
+  version "5.13.1"
+  resolved "https://registry.yarnpkg.com/@fortawesome/fontawesome-free/-/fontawesome-free-5.13.1.tgz#c53b4066edae16cd1fd669f687baf031b45fb9d6"
+  integrity sha512-D819f34FLHeBN/4xvw0HR0u7U2G7RqjPSggXqf7LktsxWQ48VAfGwvMrhcVuaZV2fF069c/619RdgCCms0DHhw==
 
 "@hapi/[email protected]":
   version "2.1.4"