Lists key-value pairs (entries) present in the given object.

{
  <T>(
    o:
      | {
          [s: string]: T;
        }
      | ArrayLike<T>
  ): [string, T][];
  (o: {}): [string, any][];
}

entries({ a: 1, b: 2, c: 3 });
// ⇒ [["a", 1], ["b", 2], ["c", 3]]

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