Function createDehydrated

packages/react-devtools-shared/src/hydration.js:76–109

* Generate the dehydrated metadata for complex object instances

(
  type: string,
  inspectable: boolean,
  data: Object,
  cleaned: Array<Array<string | number>>,
  path: Array<string | number>,
)

 * Generate the dehydrated metadata for complex object instances
 */
function createDehydrated(
  type: string,
  inspectable: boolean,
  data: Object,
  cleaned: Array<Array<string | number>>,
  path: Array<string | number>,
): Dehydrated {
  cleaned.push(path);

  const dehydrated: Dehydrated = {
    inspectable,
    type,
    preview_long: formatDataForPreview(data, true),
    preview_short: formatDataForPreview(data, false),
    name:
      typeof data.constructor !== 'function' ||
      typeof data.constructor.name !== 'string' ||
      data.constructor.name === 'Object'
        ? ''
        : data.constructor.name,
  };

  if (type === 'array' || type === 'typed_array') {
    dehydrated.size = data.length;
  } else if (type === 'object') {
    dehydrated.size = Object.keys(data).length;
  }

  if (type === 'iterator' || type === 'typed_array') {
    dehydrated.readonly = true;
  }

  return dehydrated;
}

/**
 * Strip out complex data (instances, functions, and data nested > LEVEL_THRESHOLD levels deep).