Function applyWhen

packages/forms/signals/src/api/structure.ts:324–333

(
  path: SchemaPath<TValue>,
  logic: LogicFn<TValue, boolean>,
  schema: NoInfer<SchemaOrSchemaFn<TValue>>,
)

 * @publicApi 22.0
 */
export function applyWhen<TValue>(
  path: SchemaPath<TValue>,
  logic: LogicFn<TValue, boolean>,
  schema: NoInfer<SchemaOrSchemaFn<TValue>>,
): void {
  assertPathIsCurrent(path);

  const pathNode = FieldPathNode.unwrapFieldPath(path);
  pathNode.mergeIn(SchemaImpl.create(schema), {fn: logic, path});
}

/**
 * Conditionally applies a predefined schema to a given `FieldPath`.