changed js/widgets/ fixed #2198

[RiteshSinha919]

• js/widgets/

Info:
While changing the function to Arrow Function, the variable 'widgetWindow' was having an error for these files
musickeyboard.js line 445
sampler.js line 198
temperament.js line 2023

Error message:
Cannot redeclare block-scoped variable 'widgetWindow'

I haven't changed the function to arrow function for these 3 lines

[walterbender]

Probably we want to refactor those widgets that are not defined as classes to the class format. That should be done first.

[RiteshSinha919]

@walterbender okay, so do I need to close the pull request or keep it open

[walterbender]

I think we should remove the commits to the three widgets that need to be refactors. I'll merge it and then we can make a separate PR for the refactored code. Sound OK?

[RiteshSinha919]

@walterbender sounds good, which 3 widget files need to be refactored?

[walterbender]

I think it is the 3 you had trouble with: temperament, sampler, and musickeyboard.