strapi custom service to hide ids with another type of sequence

project.ts

// src/api/project/services/project.ts

export default factories.createCoreService('api::project.project', ({strapi}) => ({
  async find(params) {
    let {results, pagination} = await super.find(params);
    results = results.map(result => ({
      ...result,
      id: result.cuid
    }))
    return {results, pagination}
  },

  async findOne(cuid, params) {
    const items = await strapi.entityService.findMany('api::project.project', {
      filters: {cuid},
      fields: ['id'],
      limit: 1
    })
    const itemId = items.length ? items[0].id : 0
    let result = await super.findOne(itemId, params);
    return ({...result, id: result.cuid})
  }
}));

sto.ts

/**
 * at the middleware layer
 * can also be made at the service layer (above) to use it across any route
 */

import {Strapi} from '@strapi/strapi';

export default (config, {strapi}: { strapi: Strapi }) => {
  return async (ctx, next) => {
    await next();
    if (ctx.response.status === 200) {
      ctx.response.body = {
        ...ctx.response.body,
        data: ctx.response.body.data.map(d => ({...d, id: d['attributes']['cuid']}))
      }
    }
  };
};