Support for Node.js v14.15.4 LTS (#772)

* Support for Node.js v15.x

- Support for Node.js v15.x

* - update node-sass for latest versions of node

* - rollback to stable react-dev-util (facebook/create-react-app#9804)

Author: shaunmaharaj

config/yarn-workspaces.js

@@ -37,7 +37,7 @@ const loadPackageJson = (packagePath) => {
 const getWorkspacesRootConfig = (dir) => {
   const packageJsonUp = findUp.sync('package.json', { cwd: dir });
 
-  if (packageJsonUp === null) {
+  if (packageJsonUp === null || packageJsonUp === undefined) {
     return false;
   }
 

package.json

@@ -63,7 +63,7 @@
     "less-loader": "^5.0.0",
     "less-vars-to-js": "^1.3.0",
     "mini-css-extract-plugin": "0.7.0",
-    "node-sass": "^4.14.0",
+    "node-sass": "^4.14.1",
     "optimize-css-assets-webpack-plugin": "5.0.1",
     "pnp-webpack-plugin": "1.5.0",
     "postcss-flexbugs-fixes": "4.1.0",
@@ -74,7 +74,7 @@
     "react": "^16.12.0",
     "react-app-polyfill": "^1.0.0",
     "react-axe": "3.3.0",
-    "react-dev-utils": "^10.0.0",
+    "react-dev-utils": "^9.1.0",
     "react-docgen-typescript-loader": "^3.6.0",
     "react-dom": "^16.12.0",
     "react-ga": "^2.5.3",
@@ -96,9 +96,9 @@
     "terser-webpack-plugin": "1.3.0",
     "url-loader": "2.0.0",
     "use-onclickoutside": "^0.3.1",
-    "webpack": "^4.41.4",
-    "webpack-cli": "^3.3.10",
-    "webpack-dev-server": "3.7.1",
+    "webpack": "^4.46.0",
+    "webpack-cli": "^4.3.1",
+    "webpack-dev-server": "3.11.2",
     "webpack-merge": "^4.2.2",
     "webpack-pwa-manifest": "^4.0.0",
     "workbox-webpack-plugin": "^5.1.3"