Function unique

Filter items in the iterator such that no two items are the same.

import { pipe } from "yta";
import { of, toArray, unique } from "yta/async";

await pipe(
  of(1, 2, 2, 3, 4, 5, 4),
  unique(),
  toArray(),
);
// => [1, 2, 3, 4, 5]
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