Function ReadonlySetFromArray

packages/effect-app/src/Schema/ext.ts:291–306

(value: ValueSchema)

 * An annotated `S.Array` of unique items that decodes to a `ReadonlySet`.
 */
export const ReadonlySetFromArray = <ValueSchema extends S.Top>(value: ValueSchema) => {
  const from = S
    .Array(value)
    .annotate({ ...concurrencyUnbounded, expected: "an array of unique items that will be decoded as a ReadonlySet" })
  const to = S.instanceOf(Set) as S.instanceOf<ReadonlySet<ValueSchema["Type"]>>
  const schema = from.pipe(
    S.decodeTo(
      to,
      SchemaTransformation.transform({
        decode: (arr) => new Set(arr) as ReadonlySet<ValueSchema["Type"]>,
        encode: (set) => [...set]
      })
    )
  )
  return schema
}

/**
 * An annotated `S.Array` of key-value tuples that decodes to a `ReadonlyMap`.