Wrong types/behavior for A.groupBy or D.mapWithKey about ts-belt HOT 4 CLOSED

import {A, D, pipe} from "@mobily/ts-belt"

function groupErrors(errors: Dict<string>): Dict<string[]> {
  return pipe(
    errors,
    D.toPairs,
    A.groupBy(pair => pair[1]), 
    D.map((pairs: any): string[] => // <-- remove this `any` suppressor to see an issue
      A.map(pairs, (pair: [string, string]) => pair[0])
    )
  )
}

console.log(groupErrors({
  login1: "NotFoundError",
  login2: "NotFoundError",
  login3: "TimeoutError",
  login4: "TimeoutError",
}))

// ->
const result = {
  NotFoundError: ["login1", "login2"],
  TimeoutError: ["login3", "login4"]
}
void result

export declare function groupBy<A>(xs: Array<A>, groupFn: (item: A) => PropertyKey): Record<PropertyKey, readonly [A, ...A[]]>;
export declare function groupBy<A>(groupFn: (item: A) => PropertyKey): (xs: Array<A>) => Record<PropertyKey, readonly [A, ...A[]]>;

export declare function groupBy<A>(xs: Array<A>, groupFn: (item: A) => PropertyKey): Record<PropertyKey, Array<A>>;
export declare function groupBy<A>(groupFn: (item: A) => PropertyKey): (xs: Array<A>) => Record<PropertyKey, Array<A>>;

Change: readonly [A, ...A[]]> --> Array<A>