Node.js read/write file promise wrapper

.ts

import fs from 'fs';
import path from 'path';

export const write = (
  data: string,
  filename: string,
  dir: string = process.cwd(),
): Promise<string> =>
  new Promise((resolve, reject) => {
    const dest = path.resolve(`${dir}/${filename}`);
    console.log(`Write to ${dest}`);
    fs.writeFile(dest, data, err => {
      if (err) {
        return reject(err);
      }
      resolve(data.toString());
    });
  });

export const read = (
  filename: string,
  dir: string = process.cwd(),
): Promise<string> =>
  new Promise((resolve, reject) => {
    const dest = path.resolve(`${dir}/${filename}`);
    console.log(`Read from ${dest}`);
    fs.readFile(dest, (err, data) => {
      if (err) {
        return reject(err);
      }
      resolve(data.toString());
    });
  });