ModelArrayBug.js

const jobsArray = [].slice.call( jobs );
const jobsToInvoice = jobsArray.map( job => ({
  name: job.name,
  quantity: 1,
  unit_price: {
    currency: "USD",
    value: job.cost
  }
}));

/*
 * Returns:
 
ModelArray [
{ name: undefined,
  quantity: 1,
  unit_price: { currency: 'USD', value: undefined } },
{ name: undefined,
  quantity: 1,
  unit_price: { currency: 'USD', value: undefined } },
{ name: undefined,
  quantity: 1,
  unit_price: { currency: 'USD', value: undefined } },
_meta: { total: 0, offset: 0 },
Model: 3 ]

*/