squashObject

/*
 * Flattens an object by converting nested properties into a single level.
 * @param {Object} object
 * @returns {Object}
 */
export default function squashObject(object) {
  const result = {};

  // Recursive function to traverse the object, depth-first search
  function dfs(value, path) {
    // null / undefined should still be included
    if (value == null || typeof value !== 'object') {
      result[path] = value;
      return;
    }

    // Traverse objects and arrays
    for (const key of Object.keys(value)) {
      // Empty key should not add a "." layer
      const newPath = key === ''
        ? path
        : path === ''
          ? key
          : `${path}.${key}`;

      dfs(value[key], newPath);
    }
  }

  dfs(object, '');

  return result;
}