Method mergeConfig

packages/core/src/utils/Utils.ts:287–289

* Merges all sources into the target recursively. Ignores `undefined` values.

(target: T, ...sources: Dictionary[])

   * Merges all sources into the target recursively. Ignores `undefined` values.
   */
  static mergeConfig<T>(target: T, ...sources: Dictionary[]): T {
    return Utils._merge(target, sources, true);
  }

  /**
   * Merges all sources into the target recursively.