Object.entries()

var obj = { foo: "bar", baz: 42 };
console.log(Object.entries(obj)); // [ ['foo', 'bar'], ['baz', 42] ]

// objeto array-like
var obj = { 0: "a", 1: "b", 2: "c" };
console.log(Object.entries(obj)); // [ ['0', 'a'], ['1', 'b'], ['2', 'c'] ]

// objeto array-like com ordenao aleatria de chave (key)
var an_obj = { 100: "a", 2: "b", 7: "c" };
console.log(Object.entries(an_obj)); // [ ['2', 'b'], ['7', 'c'], ['100', 'a'] ]

// getFoo  uma propriedade que no  enumervel
var my_obj = Object.create(
  {},
  {
    getFoo: {
      value: function () {
        return this.foo;
      },
    },
  },
);
my_obj.foo = "bar";
console.log(Object.entries(my_obj)); // [ ['foo', 'bar'] ]

// argumento no-objeto ser convertido (converso implcita) para um objeto
console.log(Object.entries("foo")); // [ ['0', 'f'], ['1', 'o'], ['2', 'o'] ]

// itera graciosamente atravs de chave-valor (key-value)
var obj = { a: 5, b: 7, c: 9 };
for (var [key, value] of Object.entries(obj)) {
  console.log(key + " " + value); // "a 5", "b 7", "c 9"
}

// Ou, usando array extras
Object.entries(obj).forEach(([key, value]) => {
  console.log(key + " " + value); // "a 5", "b 7", "c 9"
});

var obj = { foo: "bar", baz: 42 };
var map = new Map(Object.entries(obj));
console.log(map); // Map { foo: "bar", baz: 42 }