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wesbos/object-spread.js

Created June 13, 2017 18:09
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object-spread.js
const countryCodes = {
US: 'United States',
CA: 'Canada',
NG: 'Nigeria',
GB: 'United Kingdom',
};
const sales = [
{ code: 'US', count: 233 },
{ code: 'CA', count: 200 },
{ code: 'GB', count: 150 },
{ code: 'NG', count: 111 },
];
const salesMix = sales.map(sale => {
return {
...sale, // object spread takes does a shallow copy of the sale object
country: countryCodes[sale.code]
};
});
// or the hotshot way with implicit return:
const salesMixHotShot = sales.map(sale => ({...sale, country: countryCodes[sale.code] }));
console.table(salesMix);
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