Function expandPath

packages/decap-cms-lib-widgets/src/stringTemplate.ts:110–143

({
  data,
  path,
  paths = [],
}: {
  data: Record<string, unknown>;
  path: string;
  paths?: string[];
})

}

export function expandPath({
  data,
  path,
  paths = [],
}: {
  data: Record<string, unknown>;
  path: string;
  paths?: string[];
}) {
  if (path.endsWith('.*')) {
    path = path + '.';
  }

  const sep = '.*.';
  const parts = path.split(sep);
  if (parts.length === 1) {
    paths.push(path);
  } else {
    const partialPath = parts[0];
    const value = get(data, partialPath);

    if (Array.isArray(value)) {
      value.forEach((_, index) => {
        expandPath({
          data,
          path: trimEnd(`${partialPath}.${index}.${parts.slice(1).join(sep)}`, '.'),
          paths,
        });
      });
    }
  }

  return paths;
}

// Allow `fields.` prefix in placeholder to override built in replacements
// like "slug" and "year" with values from fields of the same name.