try and zip the & see if adding 'assert' polyfill helps

.circleci/config.yml

@@ -268,16 +268,20 @@ jobs:
           name: Wait for registry
           command: yarn wait-on http://localhost:6000
       - run:
-          name: run e2e tests
+          name: run e2e tests cra
           command: yarn test:e2e-framework --pnp cra
       - run:
-          name: run e2e tests
+          name: run e2e tests vue
           command: yarn test:e2e-framework --pnp sfcVue
+      - run:
+          name: prep artifacts
+          when: always
+          command: zip -r /tmp/storybook-e2e-testing-out.zip /tmp/storybook-e2e-testing
       - store_artifacts:
           path: /tmp/cypress-record
           destination: cypress
       - store_artifacts:
-          path: /tmp/storybook-e2e-testing
+          path: /tmp/storybook-e2e-testing-out.zip
           destination: e2e
   e2e-tests-examples:
     executor:

lib/builder-webpack5/src/preview/iframe-webpack.config.ts

@@ -246,7 +246,7 @@ export default async (options: Options & Record<string, any>): Promise<Configura
       },
       fallback: {
         path: require.resolve('path-browserify'),
-        assert: false,
+        assert: require.resolve('assert/'),
       },
     },
     optimization: {