ensure that tester property of drawing object exists

[wryczko]

When I tried to customize modeBarButtons by using imported objects (import PlotlyButtons from 'plotly.js/src/components/modebar/buttons') I got following error:

TypeError: Cannot read property 'node' of undefined at Object.push../node_modules/plotly.js/src/components/drawing/index.js.drawing.bBox (index.js:926)

I've noticed this issue was once explained here #3106, but no actions have been taken. I can confirm, that this issue exists, but I have reproduced it differently.

[etpinard]

Thanks very much for the PR!

Before we start thinking about merging it, could you please share a reproducible example of the bug you're trying to fix? I understand that your issue appears similar to #3106, but we haven't been able to reproduce that one (yet). Once you figured out how to replicate the problem, we'll be able to lock your fix down in a test.

Cheers!

[etpinard]

Closing due to lack of activity.

If someone can replicate the problem in a codepen, please open an issue!

Better yet, if someone can write a failing test case and then write a patch fixing it, please open a PR!

[federicomassa]

This happened to me and independently found the same way to solve it. The fix works for me, but when I tried to replicate it on CodePen I didn't manage to, the issue just didn't show up.