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* Generates an array of unique keys from an array of objects
* @param {Object[]} data The array to parse
* @returns {string[]} The unique keys
const getUniqueKeys = data => Array.from(
new Set(
data.reduce((allKeys, entry) => [...allKeys, ...Object.keys(entry)], [])
const example = getUniqueKeys([
{ name: 'Misty', type: 'cat' },
{ name: 'Sam', age: 29 },
{ title: 'Eloquent Javascript', type: 'book' }
]); // ['name', 'type', 'age', 'title']
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