Make scatter chart not require the lineElement

[LeeLenaleee]

Feature Proposal

Currently when using tree shaking to create a verry basic scatter plot you need to import and register the lineElement since it extends the line controller and sets showLine to false.

This feels weird since a scatter chart does not show lines by default so you would expect it does not need the line element.

Possible Implementation

No response

[etimberg]

This seems like a great change to make

[tdonhauser]

Is it possible that the following bug is related to this?

https://stackoverflow.com/questions/73957247/chartjsreact-toggle-showline-in-scatter-view-doesnt-work

[LeeLenaleee]

I don't think so since you import and register everything with the auto import from chart.js.

Do you have a link with a reproducable sample?

[tdonhauser]

yes, you'll find a running example here:

https://stackblitz.com/edit/react-hdhjmn?file=src/App.js

[LeeLenaleee]

Not sure what exactly is causing the issue, when I try a simpeler case with the react wrapper or with plain js it works fine:
wrapper: https://codesandbox.io/s/react-chartjs-2-chart-js-issue-template-forked-wf1d04?file=/src/App.tsx
plain js: https://codesandbox.io/s/react-chartjs-2-chart-js-issue-template-forked-ce1ugl?file=/src/App.tsx

[tdonhauser]

Nice! thanks now it works.
I tried to find the reason why it's not working with the code before, but can't see the reason.

Thanks for your help!

[tdonhauser]

Not sure what exactly is causing the issue, when I try a simpeler case with the react wrapper or with plain js it works fine: wrapper: https://codesandbox.io/s/react-chartjs-2-chart-js-issue-template-forked-wf1d04?file=/src/App.tsx plain js: https://codesandbox.io/s/react-chartjs-2-chart-js-issue-template-forked-ce1ugl?file=/src/App.tsx

If you open the wrapper example and change chart.js version to >=3.9.0 the error occurs again.
All the older version don't throw this error. It might be a bug related to the newer versions...