Types appear to be wrong for scriptable options

Expected Behavior

I am using a function as the value of backgroundColor on a bar chart. The allowed types should include a function that returns a color.

Current Behavior

The allowed types do not include a funciton:

Type '(context: any, options: any) => string' is not assignable to type 'string | _DeepPartialObject<CanvasGradient> | _DeepPartialObject<CanvasPattern> | undefined'.

Steps to Reproduce

https://www.typescriptlang.org/play?#code/JYWwDg9gTgLgBAbzgYQBYENYBo5QKYDmwAzjHlOgEYA2exOamMyEAdgGbAECuFMwbBhlgARdDHRwAvnHZQIIOAHIAxsJgA6AFbElAbgBQRlW1JwCeZm04E4AXjgAKAJQAuFOpYcuvcQNYAPEqUmEoAfPYRCAZwsbiWvKyIMXGpMACeYHjuwaFYKamxEGD8pu7RhXEhKgDWBPLcrAAmLNTQ7iasZAAe8HZRBZVx+DCJygDE7FNKg6lS+UPSg1IGUkA

import { ChartConfiguration } from 'chart.js';

const getConfig = (): ChartConfiguration<'bar'> => {
    return {
        type: 'bar',
        options: {
        backgroundColor: context => {
            return '#fff'
        },
        }
    }
}

Environment

• Chart.js version: 3.5.0
• Typescript: 4.3.5

[LeeLenaleee]

Mb it indeed is configurable there, in that case it’s indeed an issue with the typing

[rhysviz]

I am just using options.datasets.bar.backgroundColor instead so I guess this is a bug report rather than a request for help but thank you.

It seems to me that either the types are wrong or the implementation is wrong as it does work i.e. you can set the background color using a backgroundColor function in the options namespace.

I think the docs are a bit confusing if you are not meant to do that. I interpreted the page here (https://www.chartjs.org/docs/latest/charts/bar.html) as saying any of those options were available in any of the listed namespaces.