diff --git a/configs/paths.js b/configs/paths.js
index 2e70c862eb..451713f582 100644
--- a/configs/paths.js
+++ b/configs/paths.js
@@ -1,10 +1,11 @@
-import path from 'path';
-import fs from 'fs';
-import url from 'url';
-import { findMonorepo } from 'react-dev-utils/workspaceUtils';
+'use strict';
+
+const path = require('path');
+const fs = require('fs');
+const url = require('url');
 
 // Make sure any symlinks in the project folder are resolved:
-// https://github.com/facebook/create-react-app/issues/637
+// https://github.com/facebookincubator/create-react-app/issues/637
 const appDirectory = fs.realpathSync(process.cwd());
 const resolveApp = relativePath => path.resolve(appDirectory, relativePath);
 
@@ -13,7 +14,7 @@ const envPublicUrl = process.env.PUBLIC_URL;
 function ensureSlash(path, needsSlash) {
   const hasSlash = path.endsWith('/');
   if (hasSlash && !needsSlash) {
-    return path.substr(0, path.length - 1);
+    return path.substr(path, path.length - 1);
   } else if (!hasSlash && needsSlash) {
     return `${path}/`;
   } else {
@@ -24,12 +25,6 @@ function ensureSlash(path, needsSlash) {
 const getPublicUrl = appPackageJson =>
   envPublicUrl || require(appPackageJson).homepage;
 
-// We use `PUBLIC_URL` environment variable or "homepage" field to infer
-// "public path" at which the app is served.
-// Webpack needs to know it to put the right <script> hrefs into HTML even in
-// single-page apps that may serve index.html for nested URLs like /todos/42.
-// We can't use a relative path in HTML because we don't want to load something
-// like /todos/42/static/js/bundle.7289d.js. We have to know the root.
 function getServedPath(appPackageJson) {
   const publicUrl = getPublicUrl(appPackageJson);
   const servedUrl =
@@ -37,85 +32,31 @@ function getServedPath(appPackageJson) {
   return ensureSlash(servedUrl, true);
 }
 
-// config after eject: we're in ./config/
-module.exports = {
-  dotenv: resolveApp('.env'),
-  appPath: resolveApp('.'),
-  appBuild: resolveApp('build'),
-  appPublic: resolveApp('public'),
-  appHtml: resolveApp('public/index.html'),
-  appIndexJs: resolveApp('src/index.js'),
-  appPackageJson: resolveApp('package.json'),
-  appSrc: resolveApp('src'),
-  testsSetup: resolveApp('src/setupTests.js'),
-  appNodeModules: resolveApp('node_modules'),
-  publicUrl: getPublicUrl(resolveApp('package.json')),
-  servedPath: getServedPath(resolveApp('package.json')),
-};
-
-let checkForMonorepo = true;
-
-// @remove-on-eject-begin
 const resolveOwn = relativePath => path.resolve(__dirname, '..', relativePath);
 
-// config before eject: we're in ./node_modules/react-scripts/config/
+const nodePaths = (process.env.NODE_PATH || '')
+  .split(process.platform === 'win32' ? ';' : ':')
+  .filter(Boolean)
+  .filter(folder => !path.isAbsolute(folder))
+  .map(resolveApp);
+
 module.exports = {
   dotenv: resolveApp('.env'),
   appPath: resolveApp('.'),
   appBuild: resolveApp('build'),
+  appBuildPublic: resolveApp('build/public'),
+  appManifest: resolveApp('build/assets.json'),
   appPublic: resolveApp('public'),
-  appHtml: resolveApp('public/index.html'),
-  appIndexJs: resolveApp('src/index.js'),
-  appPackageJson: resolveApp('package.json'),
-  appSrc: resolveApp('src'),
-  testsSetup: resolveApp('src/setupTests.js'),
   appNodeModules: resolveApp('node_modules'),
+  appSrc: resolveApp('src'),
+  appPackageJson: resolveApp('package.json'),
+  appServerIndexJs: resolveApp('src'),
+  appClientIndexJs: resolveApp('src/client'),
+  appBabelRc: resolveApp('.babelrc'),
+  appEslintRc: resolveApp('.eslintrc'),
+  nodePaths: nodePaths,
+  ownPath: resolveOwn('.'),
+  ownNodeModules: resolveOwn('node_modules'),
   publicUrl: getPublicUrl(resolveApp('package.json')),
   servedPath: getServedPath(resolveApp('package.json')),
-  // These properties only exist before ejecting:
-  ownPath: resolveOwn('.'),
-  ownNodeModules: resolveOwn('node_modules'), // This is empty on npm 3
 };
-
-// detect if template should be used, ie. when cwd is react-scripts itself
-const useTemplate =
-  appDirectory === fs.realpathSync(path.join(__dirname, '..'));
-
-checkForMonorepo = !useTemplate;
-//these will change after adding our own pastanaga UI components
-if (useTemplate) {
-  module.exports = {
-    dotenv: resolveOwn('template/.env'),
-    appPath: resolveApp('.'),
-    appBuild: resolveOwn('../../build'),
-    appPublic: resolveOwn('template/public'),
-    appHtml: resolveOwn('template/public/index.html'),
-    appIndexJs: resolveOwn('template/src/index.js'),
-    appPackageJson: resolveOwn('package.json'),
-    appSrc: resolveOwn('template/src'),
-    testsSetup: resolveOwn('template/src/setupTests.js'),
-    appNodeModules: resolveOwn('node_modules'),
-    publicUrl: getPublicUrl(resolveOwn('package.json')),
-    servedPath: getServedPath(resolveOwn('package.json')),
-    // These properties only exist before ejecting:
-    ownPath: resolveOwn('.'),
-    ownNodeModules: resolveOwn('node_modules'),
-  };
-}
-// @remove-on-eject-end
-
-module.exports.srcPaths = [module.exports.appSrc];
-
-module.exports.useYarn = fs.existsSync(
-  path.join(module.exports.appPath, 'yarn.lock')
-);
-
-if (checkForMonorepo) {
-  // if app is in a monorepo (lerna or yarn workspace), treat other packages in
-  // the monorepo as if they are app source
-  const mono = findMonorepo(appDirectory);
-  if (mono.isAppIncluded) {
-    Array.prototype.push.apply(module.exports.srcPaths, mono.pkgs);
-  }
-  module.exports.useYarn = module.exports.useYarn || mono.isYarnWs;
-}