intercept.js

import { REACT_APP_TODO_API_URL } from './constants.js';

cy.intercept({
  method: 'GET',
  url: new RegExp(`${REACT_APP_TODO_API_URL}`/v1/to-dos`)
}, {
  fixture: 'todos.json`
})

todos.json

{
	"items": [{
		"done": false,
		"todo": "Buy coffee"
	}, {
		"done": true,
		"todo": "Pay rent"
	}],
	"pagination": {
		"perPage": 20,
		"page": 1,
		"totalItems": 2
	}
}