Contributors markdown list [Alphabetical sorting]

index.js

const fs = require("fs");
const path = require("path");
const request = require("request-promise");

let apiUrl = "https://api.github.com/repos/firstcontributions/first-contributions/contributors?per_page=100";
let pageLimit = 5;
let filePath = path.join(__dirname,'Contributor.md');

for(let page = 1; page <= pageLimit; page++){
  let options = {
    uri : `${apiUrl}&page=${page}`,
    headers: {
      'User-Agent': 'Request-Promise'
    },
    json : true
  }
  request(options)
  .then(data => {
    if(data){
      writeToFile(data, page);
    } else {
      console.log(`Data retrieval failed for page ${page}`);
    }
  }).
  catch(e => {
    console.log(`Data retrieval failed for page ${page} with error => ${e}`);
  })
};


function writeToFile(data, page){
  for(let profile of data){
    let markdown = `* [${profile.login}](${profile.html_url})\n`;
    fs.appendFile(filePath,markdown,(err) => {

      if(page == pageLimit){
        setTimeout(() => {
          writeSortedDataToFile();
        },3000)
      }

    });
  };
};


function writeSortedDataToFile(){
  fs.readFile(filePath,(err,data) => {
    if(data){
      data = data.toString();

      let dataArray = data.split('\n');
      let sortedDataArray = dataArray.sort((a,b) => a.localeCompare(b))
      let sortedDataString = sortedDataArray.join('\n');

      fs.writeFile(filePath,`${sortedDataString}`,() => {});
    }
  });
}