Remove CRA stuff, revert to custom webpack config

webpack.config.js

@@ -0,0 +1,49 @@
+const path = require("path")
+const webpack = require("webpack")
+const HTMLWebpackPlugin = require("html-webpack-plugin")
+
+module.exports = {
+  devtool: process.env.NODE_ENV === "production" ? false : "cheap-module-source-map",
+
+  entry: {
+    client: path.resolve(__dirname, "client/index.js")
+  },
+
+  output: {
+    path: path.resolve(__dirname, "build"),
+    filename: "[name]-[hash:8].js"
+  },
+
+  module: {
+    rules: [
+      { test: /\.js$/, exclude: /node_modules/, use: ["babel-loader"] },
+      { test: /\.css$/, use: ["style-loader", "css-loader"] },
+      { test: /\.md$/, use: ["html-loader", "markdown-loader"] },
+      { test: /\.png/, use: ["file-loader"] }
+    ]
+  },
+
+  plugins: [
+    new HTMLWebpackPlugin({
+      title: "unpkg",
+      chunks: ["client"],
+      template: path.resolve(__dirname, "client/index.html")
+    }),
+    new webpack.DefinePlugin({
+      "process.env.NODE_ENV": JSON.stringify(process.env.NODE_ENV || "development")
+    })
+  ],
+
+  devServer: {
+    proxy: {
+      "**": {
+        target: "http://localhost:8081",
+        bypass: req => {
+          if (req.path === "/") {
+            return "/"
+          }
+        }
+      }
+    }
+  }
+}