Typescript implementation of a zip function

zip.ts

// Source: https://stackoverflow.com/a/70192772/6053417

export function zip<T extends unknown[][]>(
  ...args: T
): { [K in keyof T]: T[K] extends (infer V)[] ? V : never }[] {
  const minLength = Math.min(...args.map((arr) => arr.length));
  // @ts-expect-error This is too much for ts
  return [...Array(minLength).keys()].map((i) => args.map((arr) => arr[i]));
}


export function zip2<T extends unknown[][]>(
  ...args: T
): { [K in keyof T]: T[K] extends (infer V)[] ? V | undefined : never }[] {
  const maxLength = Math.max(...args.map((arr) => arr.length));
  // @ts-expect-error This is too much for ts
  return [...Array(maxLength).keys()].map((i) => args.map((arr) => arr[i]));
}