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invertObject.js
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33 lines (27 loc) · 756 Bytes
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/**
* Copyright (c) Facebook, Inc. and its affiliates.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*
* @flow
*/
'use strict';
/*:: import type { ErrorMap } from './Types' */
/**
* turns
* { 'MUCH ERROR': '0', 'SUCH WRONG': '1' }
* into
* { 0: 'MUCH ERROR', 1: 'SUCH WRONG' }
*/
function invertObject(targetObj /* : ErrorMap */) /* : ErrorMap */ {
const result = {};
const mapKeys = Object.keys(targetObj);
// eslint-disable-next-line no-for-of-loops/no-for-of-loops
for (const originalKey of mapKeys) {
const originalVal = targetObj[originalKey];
result[originalVal] = originalKey;
}
return result;
}
module.exports = invertObject;