Function hydrate

packages/react-devtools-shared/src/hydration.js:688–745

(
  object: any,
  cleaned: Array<Array<string | number>>,
  unserializable: Array<Array<string | number>>,
)

}

export function hydrate(
  object: any,
  cleaned: Array<Array<string | number>>,
  unserializable: Array<Array<string | number>>,
): Object {
  cleaned.forEach((path: Array<string | number>) => {
    const length = path.length;
    const last = path[length - 1];
    const parent = getInObject(object, path.slice(0, length - 1));
    if (!parent || !parent.hasOwnProperty(last)) {
      return;
    }

    const value = parent[last];

    if (!value) {
      return;
    } else if (value.type === 'infinity') {
      parent[last] = Infinity;
    } else if (value.type === 'nan') {
      parent[last] = NaN;
    } else if (value.type === 'undefined') {
      parent[last] = undefined;
    } else {
      // Replace the string keys with Symbols so they're non-enumerable.
      const replaced: {[key: symbol]: boolean | string} = {};
      replaced[meta.inspectable] = !!value.inspectable;
      replaced[meta.inspected] = false;
      replaced[meta.name] = value.name;
      replaced[meta.preview_long] = value.preview_long;
      replaced[meta.preview_short] = value.preview_short;
      replaced[meta.size] = value.size;
      replaced[meta.readonly] = !!value.readonly;
      replaced[meta.type] = value.type;

      parent[last] = replaced;
    }
  });
  unserializable.forEach((path: Array<string | number>) => {
    const length = path.length;
    const last = path[length - 1];
    const parent = getInObject(object, path.slice(0, length - 1));
    if (!parent || !parent.hasOwnProperty(last)) {
      return;
    }

    const node = parent[last];

    const replacement = {
      ...node,
    };

    upgradeUnserializable(replacement, node);

    parent[last] = replacement;
  });
  return object;
}