covers-extractor/src/helpers/asyncExec.js

This library extract cover from a lot of document formats from exact folder

/**
 * Executes a shell command and return it as a Promise.
 * @param cmd {string}
 * @return {Promise<string>}
 */
function asyncExec(cmd) {
  const exec = require("child_process").exec;
  return new Promise((resolve, reject) => {
    exec(cmd, (error, stdout, stderr) => {
      if (error) {
        console.warn(error);
      }
      resolve(stdout ? stdout : stderr);
    });
  });
}

module.exports = asyncExec;