/*
* Copyright (c) 2015, Facebook, Inc.
* All rights reserved.
*
* This source code is licensed under the BSD-style license found in the
* LICENSE file in the root directory of this source tree. An additional grant
* of patent rights can be found in the PATENTS file in the same directory.
*
* @flow
*/
import recast from 'recast';
var {types: {namedTypes: types}} = recast;
/**
* Returns the path to the first part of the MemberExpression. I.e. given a
* path representing
*
* foo.bar.baz
*
* it returns the path of/to `foo`.
*/
export default function getMemberExpressionRoot(
memberExpressionPath: NodePath
): NodePath {
do {
memberExpressionPath = memberExpressionPath.get('object');
} while(types.MemberExpression.check(memberExpressionPath.node));
return memberExpressionPath;
}
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