CMS Content Batch Update using Contentful Management API - Update target entries "Reference" Field to "Short Text" Field

updateContentfulEntryFields.js

const contentful = require('contentful-management');

const REFERENCE_FIELD = 'topic_ref';
const SHORT_TEXT_FIELD = 'topic';

const client = contentful.createClient({
  accessToken: process.env.CONTENTFUL_MANAGEMENT_TOKEN,
});

client
  .getSpace(process.env.CONTENTFUL_SPACE)
  .then((space) => space.getEnvironment(process.env.CONTENTFUL_ENVIRONMENT))
  .then((environment) =>
    environment.getEntries({
      content_type: process.env.CONTENTFUL_CONTENT_TYPE,
      limit: 1000,
      skip: 0,
      // reference field
      `fields.${REFERENCE_FIELD}.sys.contentType.sys.id`: process.env.CONTENTFUL_REFERENCE_FIELD_CONTENT_TYPE_ID),
      `fields.${REFERENCE_FIELD}.sys.id`: process.env.CONTENTFUL_REFERENCE_FIELD_ENTRY_ID,
    })
  )
  .then((entries) => {
    console.log(`updating ${entries.total}`);
    entries.items.map(async (entry) => {
      delete entry.fields[REFERENCE_FIELD];
      entry.fields[SHORT_TEXT_FIELD] = { 'en-US': 'Test' };

      entry
        .update()
        .then((entry) => entry.publish())
        .then((updatedEntry) => {
          console.log(`done for ${updatedEntry.fields.slug['en-US']}`);
        });
    });
  })
  .catch(console.error);