@monaco-editor/loader/lib/es/utils/deepMerge.js

the library aims to setup monaco editor into your browser

import { objectSpread2 as _objectSpread2 } from '../_virtual/_rollupPluginBabelHelpers.js';

function merge(target, source) {
  Object.keys(source).forEach(function (key) {
    if (source[key] instanceof Object) {
      if (target[key]) {
        Object.assign(source[key], merge(target[key], source[key]));
      }
    }
  });
  return _objectSpread2(_objectSpread2({}, target), source);
}

export default merge;