fix demo app

setting GENERATE_SOURCEMAP=false due to facebook/create-react-app#11752

also using react-app-rewired due to facebook/create-react-app#12021 and solana-labs/oyster#538

packages/react-app-example-daos/config-overrides.js

@@ -0,0 +1,16 @@
+// config-overrides.js
+module.exports = {
+    webpack: function (config, env) {
+        config.module.rules = config.module.rules.map((rule) => {
+        if (rule.oneOf instanceof Array) {
+            rule.oneOf[rule.oneOf.length - 1].exclude = [
+            /\.(js|mjs|jsx|cjs|ts|tsx)$/,
+            /\.html$/,
+            /\.json$/,
+            ];
+        }
+        return rule;
+        });
+        return config;
+    },
+};

packages/react-app-example-daos/package.json

@@ -26,10 +26,9 @@
     "web-vitals": "^2.1.4"
   },
   "scripts": {
-    "start": "react-scripts start",
-    "build": "react-scripts build",
-    "test": "react-scripts test",
-    "eject": "react-scripts eject"
+    "start": "GENERATE_SOURCEMAP=false react-app-rewired start",
+    "build": "react-app-rewired build",
+    "test": "react-app-rewired test"
   },
   "eslintConfig": {
     "extends": [
@@ -48,5 +47,8 @@
       "last 1 firefox version",
       "last 1 safari version"
     ]
+  },
+  "devDependencies": {
+    "react-app-rewired": "^2.2.1"
   }
 }

yarn.lock

@@ -12038,6 +12038,13 @@ react-app-polyfill@^3.0.0:
     regenerator-runtime "^0.13.9"
     whatwg-fetch "^3.6.2"
 
+react-app-rewired@^2.2.1:
+  version "2.2.1"
+  resolved "https://registry.yarnpkg.com/react-app-rewired/-/react-app-rewired-2.2.1.tgz#84901ee1e3f26add0377ebec0b41bcdfce9fc211"
+  integrity sha512-uFQWTErXeLDrMzOJHKp0h8P1z0LV9HzPGsJ6adOtGlA/B9WfT6Shh4j2tLTTGlXOfiVx6w6iWpp7SOC5pvk+gA==
+  dependencies:
+    semver "^5.6.0"
+
 react-dev-utils@^12.0.1:
   version "12.0.1"
   resolved "https://registry.yarnpkg.com/react-dev-utils/-/react-dev-utils-12.0.1.tgz#ba92edb4a1f379bd46ccd6bcd4e7bc398df33e73"