Col helper accessor func doesn't take object key as first arg if generic

[vincerubinetti]

Started trying out the library and immediately ran into this issue:

import { createColumnHelper } from "@tanstack/react-table";
import classes from "./Table.module.css";

type Props<Datum extends object> = {
  cols: {
    key: keyof Datum;
    name: string;
  }[];
  rows: Datum[];
};


const Table = <Datum extends object>({ cols, rows }: Props<Datum>) => {
  const columnHelper = createColumnHelper<Datum>();

  const columns = cols.map((col) =>
    columnHelper.accessor(col.key, {
      header: col.name,
    }),
  );

  return <></>;
};

export default Table;

Argument of type 'keyof Datum' is not assignable to parameter of type 'AccessorFn<Datum> | (unknown extends Datum ? string : object extends Datum ? string : Datum extends readonly any[] & IsTuple<Datum> ? AllowedIndexes<Datum, never> | DeepKeysPrefix<Datum, AllowedIndexes<Datum, never>, []> : Datum extends any[] ? unknown extends Datum[number] ? string : object extends Datum[number] ? string : Datum[number] extends readonly any[] & IsTuple<Datum[number]> ? AllowedIndexes<Datum[number], never> | DeepKeysPrefix<Datum[number], AllowedIndexes<Datum[number], never>, [any]> : Datum[number] extends any[] ? unknown extends Datum[number][number] ? string : object extends Datum[number][number] ? string : Datum[number][number] extends readonly any[] & IsTuple<Datum[number][number]> ? AllowedIndexes<Datum[number][number], never> | DeepKeysPrefix<Datum[number][number], AllowedIndexes<Datum[number][number], never>, [any, any]> : Datum[number][number] extends any[] ? unknown extends Datum[number][number][number] ? string : object extends Datum[number][number][number] ? string : Datum[number][number][number] extends readonly any[] & IsTuple<Datum[number][number][number]> ? AllowedIndexes<Datum[number][number][number], never> | DeepKeysPrefix<Datum[number][number][number], AllowedIndexes<Datum[number][number][number], never>, [any, any, any]> : Datum[number][number][number] extends any[] ? unknown extends Datum[number][number][number][number] ? string : object extends Datum[number][number][number][number] ? string : Datum[number][number][number][number] extends readonly any[] & IsTuple<Datum[number][number][number][number]> ? AllowedIndexes<Datum[number][number][number][number], never> | DeepKeysPrefix<Datum[number][number][number][number], AllowedIndexes<Datum[number][number][number][number], never>, [any, any, any, any]> : Datum[number][number][number][number] extends any[] ? never : Datum[number][number][number][number] extends Date ? never : Datum[number][number][number][number] extends object ? (keyof Datum[number][number][number][number] & string) | DeepKeysPrefix<Datum[number][number][number][number], keyof Datum[number][number][number][number], [any, any, any, any]> : never : Datum[number][number][number] extends Date ? never : Datum[number][number][number] extends object ? (keyof Datum[number][number][number] & string) | DeepKeysPrefix<Datum[number][number][number], keyof Datum[number][number][number], [any, any, any]> : never : Datum[number][number] extends Date ? never : Datum[number][number] extends object ? (keyof Datum[number][number] & string) | DeepKeysPrefix<Datum[number][number], keyof Datum[number][number], [any, any]> : never : Datum[number] extends Date ? never : Datum[number] extends object ? (keyof Datum[number] & string) | DeepKeysPrefix<Datum[number], keyof Datum[number], [any]> : never : Datum extends Date ? never : Datum extends object ? (keyof Datum & string) | DeepKeysPrefix<Datum, keyof Datum, []> : never)'.
  Type 'string | number | symbol' is not assignable to type 'AccessorFn<Datum> | (unknown extends Datum ? string : object extends Datum ? string : Datum extends readonly any[] & IsTuple<Datum> ? AllowedIndexes<Datum, never> | DeepKeysPrefix<Datum, AllowedIndexes<Datum, never>, []> : Datum extends any[] ? unknown extends Datum[number] ? string : object extends Datum[number] ? string : Datum[number] extends readonly any[] & IsTuple<Datum[number]> ? AllowedIndexes<Datum[number], never> | DeepKeysPrefix<Datum[number], AllowedIndexes<Datum[number], never>, [any]> : Datum[number] extends any[] ? unknown extends Datum[number][number] ? string : object extends Datum[number][number] ? string : Datum[number][number] extends readonly any[] & IsTuple<Datum[number][number]> ? AllowedIndexes<Datum[number][number], never> | DeepKeysPrefix<Datum[number][number], AllowedIndexes<Datum[number][number], never>, [any, any]> : Datum[number][number] extends any[] ? unknown extends Datum[number][number][number] ? string : object extends Datum[number][number][number] ? string : Datum[number][number][number] extends readonly any[] & IsTuple<Datum[number][number][number]> ? AllowedIndexes<Datum[number][number][number], never> | DeepKeysPrefix<Datum[number][number][number], AllowedIndexes<Datum[number][number][number], never>, [any, any, any]> : Datum[number][number][number] extends any[] ? unknown extends Datum[number][number][number][number] ? string : object extends Datum[number][number][number][number] ? string : Datum[number][number][number][number] extends readonly any[] & IsTuple<Datum[number][number][number][number]> ? AllowedIndexes<Datum[number][number][number][number], never> | DeepKeysPrefix<Datum[number][number][number][number], AllowedIndexes<Datum[number][number][number][number], never>, [any, any, any, any]> : Datum[number][number][number][number] extends any[] ? never : Datum[number][number][number][number] extends Date ? never : Datum[number][number][number][number] extends object ? (keyof Datum[number][number][number][number] & string) | DeepKeysPrefix<Datum[number][number][number][number], keyof Datum[number][number][number][number], [any, any, any, any]> : never : Datum[number][number][number] extends Date ? never : Datum[number][number][number] extends object ? (keyof Datum[number][number][number] & string) | DeepKeysPrefix<Datum[number][number][number], keyof Datum[number][number][number], [any, any, any]> : never : Datum[number][number] extends Date ? never : Datum[number][number] extends object ? (keyof Datum[number][number] & string) | DeepKeysPrefix<Datum[number][number], keyof Datum[number][number], [any, any]> : never : Datum[number] extends Date ? never : Datum[number] extends object ? (keyof Datum[number] & string) | DeepKeysPrefix<Datum[number], keyof Datum[number], [any]> : never : Datum extends Date ? never : Datum extends object ? (keyof Datum & string) | DeepKeysPrefix<Datum, keyof Datum, []> : never)'.
    Type 'string' is not assignable to type 'AccessorFn<Datum> | (unknown extends Datum ? string : object extends Datum ? string : Datum extends readonly any[] & IsTuple<Datum> ? AllowedIndexes<Datum, never> | DeepKeysPrefix<Datum, AllowedIndexes<Datum, never>, []> : Datum extends any[] ? unknown extends Datum[number] ? string : object extends Datum[number] ? string : Datum[number] extends readonly any[] & IsTuple<Datum[number]> ? AllowedIndexes<Datum[number], never> | DeepKeysPrefix<Datum[number], AllowedIndexes<Datum[number], never>, [any]> : Datum[number] extends any[] ? unknown extends Datum[number][number] ? string : object extends Datum[number][number] ? string : Datum[number][number] extends readonly any[] & IsTuple<Datum[number][number]> ? AllowedIndexes<Datum[number][number], never> | DeepKeysPrefix<Datum[number][number], AllowedIndexes<Datum[number][number], never>, [any, any]> : Datum[number][number] extends any[] ? unknown extends Datum[number][number][number] ? string : object extends Datum[number][number][number] ? string : Datum[number][number][number] extends readonly any[] & IsTuple<Datum[number][number][number]> ? AllowedIndexes<Datum[number][number][number], never> | DeepKeysPrefix<Datum[number][number][number], AllowedIndexes<Datum[number][number][number], never>, [any, any, any]> : Datum[number][number][number] extends any[] ? unknown extends Datum[number][number][number][number] ? string : object extends Datum[number][number][number][number] ? string : Datum[number][number][number][number] extends readonly any[] & IsTuple<Datum[number][number][number][number]> ? AllowedIndexes<Datum[number][number][number][number], never> | DeepKeysPrefix<Datum[number][number][number][number], AllowedIndexes<Datum[number][number][number][number], never>, [any, any, any, any]> : Datum[number][number][number][number] extends any[] ? never : Datum[number][number][number][number] extends Date ? never : Datum[number][number][number][number] extends object ? (keyof Datum[number][number][number][number] & string) | DeepKeysPrefix<Datum[number][number][number][number], keyof Datum[number][number][number][number], [any, any, any, any]> : never : Datum[number][number][number] extends Date ? never : Datum[number][number][number] extends object ? (keyof Datum[number][number][number] & string) | DeepKeysPrefix<Datum[number][number][number], keyof Datum[number][number][number], [any, any, any]> : never : Datum[number][number] extends Date ? never : Datum[number][number] extends object ? (keyof Datum[number][number] & string) | DeepKeysPrefix<Datum[number][number], keyof Datum[number][number], [any, any]> : never : Datum[number] extends Date ? never : Datum[number] extends object ? (keyof Datum[number] & string) | DeepKeysPrefix<Datum[number], keyof Datum[number], [any]> : never : Datum extends Date ? never : Datum extends object ? (keyof Datum & string) | DeepKeysPrefix<Datum, keyof Datum, []> : never)'

I feel this may be a bug in the typing, as col.key (of type keyof Datum) should be able to be used as the argument.

Weirdly, this does not throw an error:

columnHelper.accessor((row: Datum) => row[col.key])

[vincerubinetti]

Ah, I think this may be the same issue as this:
#2664