Scale.update return type

[joshkel]

In Chart.js 3.0.0-rc.3, Scale.update's implementation returns void, but its TypeScript type definition inherits from LayoutItem, which says that update should return a number.

I ran into this while creating a custom scale type that extends LinearScale; it started raising type errors when I upgraded from 3.0.0-beta.7 to 3.0.0-rc.3.

[etimberg]

Good catch! I checked the calls to update() in the layout system, and none expect a return type. Additionally, the legend and title plugins do not return anything.

[joshkel]

Thanks!