Function ReadonlyMap

repos/effect/packages/effect/src/Schema.ts:9763–9819

(
  key: Key,
  value: Value
)

): OptionFromNullishOr<S> {
  return NullishOr(schema).pipe(decodeTo(
    Option(toType(schema)),
    SchemaTransformation.optionFromNullishOr(options)
  ))
}

/**
 * Type-level representation returned by {@link OptionFromOptionalKey}.
 *
 * @category models
 * @since 4.0.0
 */
export interface OptionFromOptionalKey<S extends Constraint> extends decodeTo<Option<toType<S>>, optionalKey<S>> {
  readonly "Rebuild": OptionFromOptionalKey<S>
}

/**
 * Decodes an optional value `A` to a required `Option<A>` value.
 *
 * **Details**
 *
 * Decoding maps a missing key to `None` and a present value to `Some`.
 * Encoding maps `None` to a missing key and maps `Some` to its value.
 *
 * @category schemas
 * @since 4.0.0
 */
export function OptionFromOptionalKey<S extends Constraint>(schema: S): OptionFromOptionalKey<S> {
  return optionalKey(schema).pipe(decodeTo(
    Option(toType(schema)),
    SchemaTransformation.optionFromOptionalKey()
  ))
}

/**
 * Type-level representation returned by {@link OptionFromOptional}.
 *
 * @category models
 * @since 4.0.0
 */
export interface OptionFromOptional<S extends Constraint> extends decodeTo<Option<toType<S>>, optional<S>> {
  readonly "Rebuild": OptionFromOptional<S>
}

/**
 * Decodes an optional or `undefined` value `A` to a required `Option<A>`
 * value.
 *
 * **Details**
 *
 * Decoding maps a missing key or a present `undefined` value to `None`, and
 * maps all other values to `Some`. Encoding maps `None` to a missing key and
 * maps `Some` to its value.
 *
 * @category schemas
 * @since 4.0.0
 */
export function OptionFromOptional<S extends Constraint>(schema: S): OptionFromOptional<S> {
  return optional(schema).pipe(decodeTo(