/**
 * @param baseConfig Config where other config will be merged into. This object will be mutated.
 * @param configExtension Partial config to merge into the `baseConfig`.
 */
function mergeConfigs(baseConfig, configExtension) {
  for (var key in configExtension) {
    mergePropertyRecursively(baseConfig, key, configExtension[key]);
  }
  return baseConfig;
}
var hasOwnProperty = Object.prototype.hasOwnProperty;
var overrideTypes = /*#__PURE__*/new Set(['string', 'number', 'boolean']);
function mergePropertyRecursively(baseObject, mergeKey, mergeValue) {
  if (!hasOwnProperty.call(baseObject, mergeKey) || overrideTypes.has(typeof mergeValue) || mergeValue === null) {
    baseObject[mergeKey] = mergeValue;
    return;
  }
  if (Array.isArray(mergeValue) && Array.isArray(baseObject[mergeKey])) {
    baseObject[mergeKey] = baseObject[mergeKey].concat(mergeValue);
    return;
  }
  if (typeof mergeValue === 'object' && typeof baseObject[mergeKey] === 'object') {
    if (baseObject[mergeKey] === null) {
      baseObject[mergeKey] = mergeValue;
      return;
    }
    for (var nextKey in mergeValue) {
      mergePropertyRecursively(baseObject[mergeKey], nextKey, mergeValue[nextKey]);
    }
  }
}

export { mergeConfigs };
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