penpot-exporter-figma-plugin/plugin-src/transformers/partials/transformChildren.ts

import { translateChildren, translateMaskChildren } from '@plugin/translators';

import { Children } from '@ui/lib/types/utils/children';

const nodeActsAsMask = (node: SceneNode): boolean => {
  return 'isMask' in node && node.isMask;
};

export const transformChildren = (node: ChildrenMixin): Children => {
  const maskIndex = node.children.findIndex(nodeActsAsMask);
  const containsMask = maskIndex !== -1;

  return {
    children: containsMask
      ? translateMaskChildren(node.children, maskIndex)
      : translateChildren(node.children)
  };
};