fix theme configuration

Author: 2fd

package.json

@@ -5,8 +5,9 @@
   "main": "index.js",
   "scripts": {
     "test": "wasm-pack test --node --chrome --headless",
+    "start": "parcel index.html pkg/index_bg.wasm -p 8080",
     "clear": "rm -rf dist/pkg dist/*.js dist/*.css dist/*.map",
-    "build": "parcel build --public-url rust-regex-playground/ index.html pkg/index_bg.wasm"
+    "build": "parcel build --public-url \"/rust-regex-playground/\" index.html pkg/index_bg.wasm"
   },
   "repository": {
     "type": "git",

playground/theme.ts

@@ -1,6 +1,6 @@
 // tslint:disable:no-console
 import * as React from "react";
-import { defaultTheme } from "evergreen-ui/commonjs/theme/src/default-theme/index.js";
+import defaultTheme from "evergreen-ui/commonjs/theme/src/default-theme/index.js";
 const Theme = React.createContext(defaultTheme);
 const { Provider: ThemeProvider, Consumer: ThemeConsumer } = Theme;
 export default Theme;