@schukai/monster
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Monster is a simple library for creating fast, robust and lightweight websites.
64 lines (59 loc) • 1.95 kB
JavaScript
/**
* Copyright © Volker Schukai and all contributing authors, {{copyRightYear}}. All rights reserved.
* Node module: @schukai/monster
*
* This source code is licensed under the GNU Affero General Public License version 3 (AGPLv3).
* The full text of the license can be found at: https://www.gnu.org/licenses/agpl-3.0.en.html
*
* For those who do not wish to adhere to the AGPLv3, a commercial license is available.
* Acquiring a commercial license allows you to use this software without complying with the AGPLv3 terms.
* For more information about purchasing a commercial license, please contact Volker Schukai.
*
* SPDX-License-Identifier: AGPL-3.0
*/
export { extractKeys };
/**
* Extracts the keys from the given object and returns a map with the keys and values.
*
* @private
* @param {object} obj
* @param {string} keyPrefix
* @param {string} keySeparator
* @param {string} valueSeparator
* @return {Map<any, any>}
*/
function extractKeys(
obj,
keyPrefix = "",
keySeparator = "-",
valueSeparator = ".",
) {
const resultMap = new Map();
function helper(currentObj, currentKeyPrefix, currentValuePrefix) {
for (const key in currentObj) {
if (
currentObj[key] !== null &&
typeof currentObj[key] === "object" &&
!Array.isArray(currentObj[key])
) {
const newKeyPrefix = currentKeyPrefix
? currentKeyPrefix + keySeparator + key.toLowerCase()
: key.toLowerCase();
const newValuePrefix = currentValuePrefix
? currentValuePrefix + valueSeparator + key
: key;
helper(currentObj[key], newKeyPrefix, newValuePrefix);
} else {
const finalKey = currentKeyPrefix
? currentKeyPrefix + keySeparator + key.toLowerCase()
: key.toLowerCase();
const finalValue = currentValuePrefix
? currentValuePrefix + valueSeparator + key
: key;
resultMap.set(finalKey, finalValue);
}
}
}
helper(obj, keyPrefix, keyPrefix);
return resultMap;
}