Function treeTraverse

src/utils.js:24–53

(path = '', tree, isLeafNode, errorMessage, callback)

}

export function treeTraverse(path = '', tree, isLeafNode, errorMessage, callback) {
  if (isLeafNode(path, tree)) {
    callback(path, tree);
  } else if (tree === undefined || tree === null) {
    // Do nothing
  } else if (Array.isArray(tree)) {
    tree.forEach((subTree, index) => treeTraverse(
      `${path}[${index}]`,
      subTree,
      isLeafNode,
      errorMessage,
      callback
    ));
  } else { // It's object and not a leaf node
    if (typeof tree !== 'object') {
      warning(false, errorMessage);
      return;
    }
    Object.keys(tree).forEach(subTreeKey => {
      const subTree = tree[subTreeKey];
      treeTraverse(
        `${path}${path ? '.' : ''}${subTreeKey}`,
        subTree,
        isLeafNode,
        errorMessage,
        callback
      );
    });
  }
}

export function flattenFields(maybeNestedFields, isLeafNode, errorMessage) {
  const fields = {};