looping through deal => contact assocations in hubspot, then associating them

hubspot-better-assocation-loop.js

const hubspot = require('@hubspot/api-client');

exports.main = async (event, callback) => {

  const hubspotClient = new hubspot.Client({
    accessToken: process.env.custom_code_private_app
  });
    
  try {
    
    // this is using object destructuring, its a bit complicated, but basicaly I'm returning the response.body as "dealAssociations" variable
    const { body: dealAssociations } = await hubspotClient.crm.deals.associationsApi.getAll(event.object.objectId, 'contact')  
    
    if (!dealAssociations.results.length) {
      callback({
        outputFields: {
          error: true,
          message: 'no contact associations'
        }
      })
    }

    // in this example here I am looking at all assocations on teh deal and looping through them
    let total = 0
    for (const contact of dealAssociations.results) {
      // and then here you could do your assocation update
      const updateAssociations = await hubspotClient.crm.contacts.associationsApi.create(contact.id, 'deals', event.object.objectId, 'agent');
      total = total++
    }
    
    callback({
      outputFields: {
        updatedAssociationTotal: total
      }
    });  
  } catch (err) {
    console.error(err);
    callback({
      outputFields: {
        errorMessage: err
      }
    });  
  }
}