Method mapFields

packages/effect/src/Schema.ts:14008–14008

* Returns a new struct with the fields modified by the provided function. * * **Details** * * Options: * * - `unsafePreserveChecks` - if `true`, keep any `.check(...)` constraints * that were attached to the original struct. Defaults to `false`. * * **Warning**: This i

(
    f: (fields: S["fields"]) => To,
    options?: {
      readonly unsafePreserveChecks?: boolean | undefined
    } | undefined
  )

   *   after the transformation.
   */
  mapFields<To extends Struct.Fields>(
    f: (fields: S["fields"]) => To,
    options?: {
      readonly unsafePreserveChecks?: boolean | undefined