Need to install core-js@2 for a sample

[chengtie]

I tried to follow this blog to make a cubejs+react sample.

After installing the backend, we could successfully launch http://localhost:4000 in a browser. Then, I tried to add a React dashboard in the browser. After some installation, the folder dashboard-app was generated. However, after npm run start, launching http://localhost:3000 returned an error:

./node_modules/@cubejs-client/core/dist/cubejs-client-core.js
Module not found: Can't resolve 'core-js/modules/es6.array.filter' in '/Users/chengtie/Startup/ReactProjects/mongo-tutorial/dashboard-app/node_modules/@cubejs-client/core/dist'

After chatting on Slack, Hassan Khan gave a solution: we need to install core-js@2 under dashboard-app by npm install core-js@2 --save. Here is the Slack link.

I guess this report may help you improve the sample.

[paveltiunov]

Hey @chengtie ! Thanks for posting this one! Should be fixed in 0.17.10. Could you please try create new project from scratch again?

[hassankhan]

Hi @paveltiunov, I thought the fix would be to add core-js as a dependency when generating a new dashboard app? Am I missing some context? 😀

[paveltiunov]

@hassankhan Yeah. This is fast fix to reanimate dashboards. We need to find a solution on how to make babel work with core-js@3. I wasn't able to find it yet. Do you have any ideas here?

[hassankhan]

Did some digging, this link seems to have some interesting information.

Dependabot should probably open another PR soon attempting to re-upgrade core-js, we can continue the discussion (and any extra followup work) on that PR

[paveltiunov]

@hassankhan Gotcha. Seems like babel is out of date on a build level rather than actually in created react app? Need to upgrade our babel for rollup build?