Fix importing npm linked libraries (#1359)

* Fix importing npm linked libraries

* Update webpack.config.dev.js

* Update webpack.config.prod.js

Author: AsaAyers

packages/react-scripts/config/webpack.config.dev.js

@@ -79,7 +79,7 @@ module.exports = {
     // We placed these paths second because we want `node_modules` to "win"
     // if there are any conflicts. This matches Node resolution mechanism.
     // https://github.com/facebookincubator/create-react-app/issues/253
-    modules: ['node_modules'].concat(paths.nodePaths),
+    modules: ['node_modules', paths.appNodeModules].concat(paths.nodePaths),
     // These are the reasonable defaults supported by the Node ecosystem.
     // We also include JSX as a common component filename extension to support
     // some tools, although we do not recommend using it, see:

packages/react-scripts/config/webpack.config.prod.js

@@ -78,7 +78,7 @@ module.exports = {
     // We placed these paths second because we want `node_modules` to "win"
     // if there are any conflicts. This matches Node resolution mechanism.
     // https://github.com/facebookincubator/create-react-app/issues/253
-    modules: ['node_modules'].concat(paths.nodePaths),
+    modules: ['node_modules', paths.appNodeModules].concat(paths.nodePaths),
     // These are the reasonable defaults supported by the Node ecosystem.
     // We also include JSX as a common component filename extension to support
     // some tools, although we do not recommend using it, see: