Function readonly

packages/forms/signals/src/api/rules/readonly.ts:44–64

(
  path: SchemaPath<TValue, SchemaPathRules.Supported, TPathKind>,
  configOrLogic?:
    | {when?: NoInfer<LogicFn<TValue, boolean, TPathKind>>}
    | NoInfer<LogicFn<TValue, boolean, TPathKind>>,
)

): void;

export function readonly<TValue, TPathKind extends PathKind = PathKind.Root>(
  path: SchemaPath<TValue, SchemaPathRules.Supported, TPathKind>,
  configOrLogic?:
    | {when?: NoInfer<LogicFn<TValue, boolean, TPathKind>>}
    | NoInfer<LogicFn<TValue, boolean, TPathKind>>,
) {
  assertPathIsCurrent(path);

  const pathNode = FieldPathNode.unwrapFieldPath(path);

  let logic: LogicFn<TValue, boolean, TPathKind>;
  if (typeof configOrLogic === 'object' && configOrLogic !== null && 'when' in configOrLogic) {
    logic = configOrLogic.when ?? (() => true);
  } else if (typeof configOrLogic === 'function') {
    logic = configOrLogic;
  } else {
    logic = () => true;
  }

  pathNode.builder.addReadonlyRule(logic);
}