feat: The Computed Column function is passed row, index, and array

[DanKaplanSES]

👀What is this pr about?

The Computed Column function is passed row, index, and array. The latter two are new.

I modeled this change on JavaScript's map() callback parameter.

🚀 Changes

Before:

export interface ComputedColumn extends ColumnOptionsRaw {
  function: (arg0: any) => any;
}

After:

export interface ComputedColumn extends ColumnOptionsRaw {
  function: (arg0: any, index: number, array: any[]) => any;
}

array is a string[]. I'm not sure why anything in this file has an any type, but I used it here to follow conventions.

Along the way, I noticed that the addColumn and addColumns parameters may have the wrong types?

Related

• Documentation and/or Feature Request: Make it easier to learn how to create a "Row Number" column #461
• Bug: table.addColumn and table.addColumns have incorrect type signatures. #462
• Feature Request: narrow any types in typescript files #463

[DanKaplanSES]

I've decided to convert this to a draft because I'm not sure if the new values will be correct when rows are filtered and/or sorted (or what "correct" means in this context).

[ayonious]

@DanKaplanSES Could you split the PR in 3 different ones fixing 3 different Problems? One of them are okay to be merged rest would have some comments