Typed Array Pluck, Object Pluck, Array Chunk

typescript.ts

  /**
   * @example ArrayPluck([{name: 'A}, {name: 'B'}], 'name')
   */
  function ArrayPluck<T, K extends keyof T>(arr: T[], key: K): T[K][] {
    return arr.map(i => i[key]);
  }

  /**
   * @example ObjectPluck({brand: "BMW", manufacturer:"BF", model: "750"}, ["manufacturer", "model"]);
   */
  function ObjectPluck<T, K extends keyof T>(o: T, propertyNames: K[]): T[K][] {
    return propertyNames.map((n) => o[n]);
  }
  
  function ArrayChunk<T>(arr: T[], size: number): T[][] {
    return Array.from({ length: Math.ceil(arr.length / size) }, (_: any, i: number) =>
      arr.slice(i * size, i * size + size)
    );
  }