Function dedupe

packages/effect/src/Array.ts:4499–4514

(
  self: S
)

 * @since 2.0.0
 */
export const dedupe = <S extends Iterable<any>>(
  self: S
): S extends NonEmptyReadonlyArray<infer A> ? NonEmptyArray<A> : S extends Iterable<infer A> ? Array<A> : never => {
  const input = fromIterable(self)
  if (input.length < 2) {
    return [...input] as any
  }
  const buckets: HashBuckets = new Map()
  const out: Array<unknown> = []
  for (const value of input) {
    if (hashBucketsAdd(buckets, value)) {
      out.push(value)
    }
  }
  return out as any
}

/**
 * Removes consecutive duplicate elements using a custom equivalence.