ldap.js

const ldap = require('ldapjs');

const LDAP_HOST = "ldap://ldap.foobar.com";
const LDAP_PASSWORD = "**********";
const LDAP_USER = "**********";

const createClient = async () => {
  const client = ldap.createClient({
    url: LDAP_HOST,
  });

  client.on('error', (err) => {
    if (err) {
      throw err;
    }
  });

  return new Promise((resolve, reject)=>{
    client.bind(
      `CN=${LDAP_USER},OU=SA,OU=Company Users,DC=company,DC=com`,
      LDAP_PASSWORD,
      (err) => {
        if (err) {
          return reject(err);
        } else {
          resolve(client);
        }
      },
    );
  })

}

const get = (client, email) => {
  return new Promise((resolve, reject) => {

    // const employeeNumber = '';
    const groupName = 'MY_GROUP';
    const realName = "Joseph Puzzo";

    const options = {
      // filter: `(&(employeeNumber=${employeeNumber}))`,
      // filter: `(&(mail=${email}))`,
      // filter: `(=${groupName})`,
      // filter: `(&(memberOf=cn=${groupName}))`,
      // filter: `(&(objectCategory=group)(cn=${groupName}))`,
      // filter: `(displayName=${groupName})`,
      filter: `(name=${realName})`,
      // filter: `(&(memberOf=CN=${groupName}))`,
      // filter: `(&(objectCategory=person)(objectClass=user)(memberOf=CN=${groupName}))`,
      scope: 'sub',
      // attributes: ['memberOf', 'mailNickname'],
      attributes: ['member', 'mail', 'name'],
    };

    client.search(
      'OU=Employees,OU=Comapny Users,DC=company,DC=com',
      options,
      (err, resp) => {
        resp.on('searchRequest', (searchRequest) => {
          console.log('searchRequest: ', searchRequest.messageID);
        });
        resp.on('searchEntry', (entry) => {
          return resolve(entry.object);
        });
        resp.on('searchReference', (referral) => {
          console.log('referral: ' + referral.uris.join());
        });
        resp.on('error', (err) => {
          console.log('Error:', err);
          if (err) {
            return reject(err);
          }
        });
        resp.on('end', (result) => {
          console.log('status: ' + result.status);
          resolve(result.status)
        });
      },
    );
  });
  
}

  const go = async () => {
    console.log('STARTING...');

    try {
      const client = await createClient();
      const joe = await get(client, '[email protected]');
      const foo = await get(client, '[email protected]');
      const bar = await get(client, '[email protected]');

      console.log('\n--------------------');
      console.log('RES', joe);
      console.log('\n--------------------');
      console.log('RES', foo);
      console.log('\n--------------------');
      console.log('RES', bar);

      client.unbind((err) => {
        if(err){
          console.log('Error while unbinding', err);
        }
      });

    } catch(e){
      console.log('Unable to create client', e);
    }
  
  }

  go();