Retrieve Block Children

import { Client } from "@notionhq/client";

/**

 * Learn more at

 * https://developers.notion.com/reference/get-block-children

 */

type Notion = {

  token: string;

};

export async function main(

  auth: Notion,

  block_id: string,

  start_cursor?: string,

  page_size?: number,

) {

  const client = new Client({ auth: auth.token });

  const args = removeObjectEmptyFields({

    block_id,

    start_cursor,

    page_size,

  });

  return await client.blocks.children.list(args);

}

function removeObjectEmptyFields(

  object?: Record<string, any>,

  removeEmptyArraysAndObjects = true,

  createNewObject = true,

) {

  if (!object || typeof object !== "object") return {}

  const obj = createNewObject ? { ...object } : object

  const emptyValues = [undefined, null, ""]

  for (const key in obj) {

    const value = obj[key]

    if (emptyValues.includes(value)) {

      delete obj[key]

    } else if (typeof value === "object") {

      if (Object.keys(value).length) {

        obj[key] = removeObjectEmptyFields(value, removeEmptyArraysAndObjects, false)

      }

      if (!Object.keys(value).length && removeEmptyArraysAndObjects) {

        delete obj[key]

      }

    }

  }

  return obj

}