keys

List all keys.

Similar: keys, has, randomKey.
Similar: keys, values, entries.

function keys(x)
// x: an object

const object = require('extra-object');

var x = {a: 1, b: 2, c: 3};
object.keys(x);
// → [ 'a', 'b', 'c' ]

References

• Array.prototype.values: MDN web docs