fix: umd build default export (#1219)

* fix: umd build default export

* default export

Author: vasilev-alex

package.json

@@ -22,22 +22,21 @@
   ],
   "devDependencies": {
     "@cubejs-backend/linter": "file:./packages/cubejs-linter",
-    "@babel/core": "^7.0.1",
-    "@babel/plugin-transform-runtime": "^7.0.0",
-    "@babel/preset-env": "^7.0.0",
+    "@babel/core": "^7.12.0",
+    "@babel/plugin-transform-runtime": "^7.12.0",
+    "@babel/preset-env": "^7.12.0",
     "@babel/preset-react": "^7.0.0",
-    "@babel/runtime": "^7.0.0",
+    "@babel/runtime": "^7.12.0",
     "@cubejs-client/core": "^0.17.10",
     "@rollup/plugin-alias": "^3.1.1",
-    "@rollup/plugin-babel": "^5.2.0",
-    "@rollup/plugin-commonjs": "^15.0.0",
+    "@rollup/plugin-babel": "^5.2.1",
+    "@rollup/plugin-commonjs": "^15.1.0",
     "@rollup/plugin-node-resolve": "^9.0.0",
     "@rollup/plugin-replace": "^2.3.3",
     "@types/fs-extra": "^9.0.1",
     "@types/jest": "^26.0.3",
     "babel-eslint": "^10.1.0",
     "babel-runtime": "^6.26.0",
-    "babelrc-rollup": "^3.0.0",
     "eslint-config-react-app": "^5.2.1",
     "eslint-plugin-flowtype": "^5.2.0",
     "eslint-plugin-import": "^2.18.2",

packages/cubejs-client-core/src/index.umd.js

@@ -1,3 +1,8 @@
-const index = require('./index.js');
+import cubejs from './index';
+import * as clientCoreExports from './index';
 
-module.exports = index;
+Object.keys(clientCoreExports).forEach((key) => {
+  cubejs[key] = clientCoreExports[key];
+});
+
+export default cubejs;