Speed up Create React App with TypeScript in development

react-scripts+3.4.1.patch

diff --git a/node_modules/react-scripts/config/webpack.config.js b/node_modules/react-scripts/config/webpack.config.js
index 25840d9..25c3c41 100644
--- a/node_modules/react-scripts/config/webpack.config.js
+++ b/node_modules/react-scripts/config/webpack.config.js
@@ -172,7 +172,7 @@ module.exports = function(webpackEnv) {
       // The build folder.
       path: isEnvProduction ? paths.appBuild : undefined,
       // Add /* filename */ comments to generated require()s in the output.
-      pathinfo: isEnvDevelopment,
+      pathinfo: false,
       // There will be one main bundle, and one file per asynchronous chunk.
       // In development, it does not produce real files.
       filename: isEnvProduction
@@ -270,10 +270,14 @@ module.exports = function(webpackEnv) {
       // Automatically split vendor and commons
       // https://twitter.com/wSokra/status/969633336732905474
       // https://medium.com/webpack/webpack-4-code-splitting-chunk-graph-and-the-splitchunks-optimization-be739a861366
-      splitChunks: {
+      splitChunks: isEnvDevelopment ? false : {
         chunks: 'all',
         name: false,
       },
+      removeAvailableModules: isEnvDevelopment && false,
+      removeEmptyChunks: isEnvDevelopment &&  false,
+
+
       // Keep the runtime chunk separated to enable long term caching
       // https://twitter.com/wSokra/status/969679223278505985
       // https://github.com/facebook/create-react-app/issues/5358